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RE:I need help finding the thickness of a Felpro Head Gasket |
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Elite Guru
 
Joined:
2005/9/17 0:00 From Downbound train, NC
Posts:
2184
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I did a little hunting too but was unable to find out. I can confirm that the GM Impala gaskets are indeed .029" when compressed, having measured them after removal. One would think that the gaskets you reference, since they're listed as for the Impala and similar LT1s, would be very close to that too. But who knows? I share your frustration. When I want to know something, I want to know it, dammit!
Posted on: 2008/1/12 4:45
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RE:Best way to flush coolant system? |
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Senior Guru
 
Joined:
2007/10/29 0:00 Posts:
1044
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Quote:
yes I agree you need both. But in thermal solutions as CC pointed out Temperature delta at the point of heat exchange is crucial. The Colder the radiator is to begin with will dictate how much cooling you get from running fluid through it. If the radiator has no air flow you can calculate how many Watts is it will transfer sitting in an ambient room. The wattage transfer will actually diminish by running more heated fluid though it without changing any other parameter. That calculation moves once air flow is passing across the fins. Here is the company I work for as an engineer. http://www.ferrotec.com/products/thermal/
Posted on: 2008/1/12 4:42
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Do you agree that you need both? If not we have nothing to argue about.RE:Why I do my own work........ |
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Senior Guru
Joined:
2007/12/11 0:00 From Raleigh, NC
Posts:
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Good luck. I hope it works! I have no idea how much of a load the bolts will have to take; here's hoping it's not too much.
Posted on: 2008/1/12 4:11
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Harmonic Balancer |
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Guru Newb
 
Joined:
2008/1/4 0:00 From Newport News,Va
Posts:
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If you ever remove the harmonic balancer, mark the location on the crank CORRECTLY or it will be a problem. Sadly, the crank is not keyed, this means the pulley can go on anyway it wants to. SORRY BOGUS BUT I HAVE TO DISAGREE
THIS IS INCORRECT THE 3 HOLES ARE OFF SET THE BALANCER WILL ONLY GO ON ONEWAY AT LEAST ON LT1 ENGINES ANYWAY. :thumbright:
Posted on: 2008/1/12 4:09
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Re: Actually |
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Elite Guru
 
Joined:
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Quote:
Food for thought -- the difference in thread pitch (threads per inch) is the critical item that determines what strength is left in the holes. The holes are definitely weaker by being re-threaded, but the amount the holes are weakened is a function of the difference in thread pitch between the two bolts and less to do with the 0.02 inch difference in diameter. I don't disagree with your assessment. My repair is just that, a repair. If it goes badly, I'll take it off and Helicoil the hole. THe threads were so trashed I didn't have much of a choice. I'll admit, it's a shot. Not too much material came out of the hole, I know what you are saying about thread pitch. Essentially, if there isn't enough meat on the threads, the bolt can pull right out. At the point I was at, there wasn't much I can do without complete dis assembly. So I took a shot. If it has to come back off, it's not that big a deal, it's external... We'll see what happens.
Posted on: 2008/1/12 4:01
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RE:I need help finding the thickness of a Felpro Head Gasket |
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2011 Memorial Day Car Show Winner!
 
Joined:
2006/4/23 0:00 From Chesapeake Beach, Maryland
Posts:
4543
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Yeh, I was going to use those, but Lloyd Elliot, the guy that ported my heads, said to use the thinner gasket as it would give me a pinch more compression and since I have such a narrow lobe separation on the cam it would help out.
Posted on: 2008/1/12 3:52
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Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
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Actually |
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Senior Guru
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Food for thought -- the difference in thread pitch (threads per inch) is the critical item that determines what strength is left in the holes. The holes are definitely weaker by being re-threaded, but the amount the holes are weakened is a function of the difference in thread pitch between the two bolts and less to do with the 0.02 inch difference in diameter.
Think of it this way -- when the holes were originally tapped for 8 mm bolts, a certain amount of metal was removed. Now the holes are re-tapped for 5/16". More metal is removed, now from different parts of the hole wall. Not a good situation. You now put your 5/16" bolt into the hole and torque it. The threads are not supported completely -- if the holes have been weakened enough, the hole wall will fail before you reach the torque specification. That's probably the best thing to happen, as you will now have to bring the unit to a machine shop and have them repair the holes correctly. What is likely to happen is that the hole walls will support the torque spec, but will fail when the engine is under full load. Why? There are gaps where the original 8 mm bolt tap had already removed metal. The RTV, or threadlock or any other additive is not going to increase the ultimate strength of the bolt in the hole. All they do is to resist the bolt from turning. However, when the load is placed on the bolt, it is straight out of the hole, the additives have no affect. This is harder to explain than I thought, and I'd be happy to try again, but the bottom line is that I wouldn't trust your "fix".
Posted on: 2008/1/12 3:46
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RE:I need help finding the thickness of a Felpro Head Gasket |
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Elite Guru
Joined:
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Posts:
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I'm not familiar with that part number. The 1074 Felpros I run are .039".
Posted on: 2008/1/12 3:40
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I need help finding the thickness of a Felpro Head Gasket |
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2011 Memorial Day Car Show Winner!
Joined:
2006/4/23 0:00 From Chesapeake Beach, Maryland
Posts:
4543
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I hate to cross post forums but I'm needing help. I have been searching the internet all night and found nothing so far. I dd post this other places on the web, so if you see it you can just ignore (sorry)
I started installing my heads, and started to question the gasket. It is supposed to be .029 thk Impala/Caprice LT1 head gasket. The GM part No. is "GM PART # 12553160". This gasket is a confirmed .029" However, my problem started when I decided to do a cross reference and buy the Fel-Pro brand (Fel-Pro part no. 9966 PT) instead of GM. The gasket appears exactly the same physically, but I can't find and specs on the gasket, and I read on LS1/LT1 Tech that the Fel-Pro Impy Gasket was .049. That would really suck! The other thing I noticed about these gaskets, is that most of the coolant holes in the gasket are very small relative to the large coolant passages in the head and block deck. If you guys have a way to find out the thickness specs on the Fel-Pro 9966 PT Gasket I'd appreciate the help big time. I have one bank already installed and torqued and really don't want to remove that head if I don't have to. Thanks for any help - comments or suggestions
Posted on: 2008/1/12 3:28
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Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
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RE:taking vet to tech school |
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Senior Guru
 
Joined:
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Posts:
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There's two plugs on the a/c high pressure line, about 12" away from the evap coil (the one enclosed in plastic by the firewall).
The big one is your high pressure switch, it opens at high pressure, and if disconnected, will make the fan run. Pull it out and stick a jumper wire in them, see if it shuts the fan off. The smaller one next to it is a high pressure cutout for the a/c. This will shut off the compressor, but doesn't effect the fan. Then there's a 3rd plug, right at the evap, that is used to control the compressor during normal operation. I feel like I've typed all this before.
Posted on: 2008/1/12 3:24
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1985 Z51, ZF6 |
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RE:rear window tint |
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Senior Guru
Joined:
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Posts:
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I'll leave my back window to the pros, plus I want it to be done in 1 piece. I have to repair a few defroster grid lines first though. I might even damage some during tint removal, so I'll check it before doing new tint.
Posted on: 2008/1/12 3:14
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1985 Z51, ZF6 |
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RE:Tata Nano |
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On Sabbatical
Joined:
2006/7/6 0:00 From Augusta, GA (85 383 stroker)
Posts:
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Wow, I could trade my vette in on 3 of those and have money left over
Posted on: 2008/1/12 3:13
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RE:84 'Vette milage |
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Senior Guru
Joined:
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Figure out the miles/year. How long did it take to accumulate those miles, vs what the odo says now? Could be a typo during smog or change of ownership. Although you'll have to justify it to everyone when trying to sell it if they check carfax.
Maybe the cluster was replaced. The odo's can easily be messed with either way.
Posted on: 2008/1/12 3:13
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1985 Z51, ZF6 |
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RE:Tata Nano |
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Senior Guru
Joined:
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Posts:
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[quote]But I bet there will be a thread on a website somewhere titled]
 I think I'd feel safer on my motorcycle! I find it amazing that someone would chose that new POS over something used that allows you to fit your arms AND legs inside the vehicle at the same time.
Posted on: 2008/1/12 3:09
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1985 Z51, ZF6 |
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RE:New arcade game for me...check it out |
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On Sabbatical
Joined:
2006/7/6 0:00 From Augusta, GA (85 383 stroker)
Posts:
3213
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This is #2, have you not been paying attention?
 Really though, I have been working on a show case 33" style cabinet which is coming along nicely but its far from done. What prompted this? Well I was telling the wife I need a working cabinet so I can bench test the other boards I have to see if they work or not. She let me.In case you all dont clicky the linky here is the actual pic 
Posted on: 2008/1/12 3:09
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RE:New arcade game for me...check it out |
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Senior Guru
Joined:
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Posts:
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Nice. Is this your first one of many?
That's a great idea for a game room.
Posted on: 2008/1/12 3:04
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1985 Z51, ZF6 |
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RE:New arcade game for me...check it out |
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On Sabbatical
Joined:
2006/7/6 0:00 From Augusta, GA (85 383 stroker)
Posts:
3213
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I think it was made by the same people....atari right? I am so looking forward to having a working cabinet which I am sure will help me gain motivation to complete the one I am working on.
Posted on: 2008/1/12 3:02
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RE:New arcade game for me...check it out |
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Mega Guru
 
Joined:
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Posts:
3644
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Cool! I used to have a game that looked similar for PS1. I think it was called Mech Warrior.
Posted on: 2008/1/12 3:01
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_________________
Currently "Between Vettes". 
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RE:84 'Vette milage |
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On Sabbatical
Joined:
2006/7/6 0:00 From Augusta, GA (85 383 stroker)
Posts:
3213
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my 85 has over 300K on it :tongue:
Posted on: 2008/1/12 2:49
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RE:rear window tint |
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On Sabbatical
Joined:
2006/7/6 0:00 From Augusta, GA (85 383 stroker)
Posts:
3213
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You can buy it anywhere, even walmart. I will tell you this, its a two person job and you want to do it inside a garage. Make sure you have some soap water in a water bottle and buy the tint kit with the rubber squegee. Cut the tint to size using sizors on the outside of the window BEFORE removing the film on the other side. Other than that follow the directions to a T on the pack and make sure you have 2 people. Mine came out ok on the PS window but the other one is jacked a bit and the back window does not look good at all. I made the mistake of doing it myself and on a windy day
Posted on: 2008/1/12 2:48
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RE:Why I do my own work........ |
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Senior Guru
Joined:
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Posts:
180
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Quote:
Quote: You can say you have me to F it up for you too
Posted on: 2008/1/12 2:47
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RE:Tata Nano |
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Elite Guru
Joined:
2005/9/16 0:00 Posts:
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[quote]But I bet there will be a thread on a website somewhere titled]
OUCH!
Posted on: 2008/1/12 2:28
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RE:Why I do my own work........ |
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Elite Guru
Joined:
2005/9/9 0:00 Posts:
1778
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Quote:
Quote: After all this work, and my advanced age (40) I have no desire to ever take it apart agian. I have been particularly anal with the re-assembly. I have learned in the past, that I'd rather do it slow and right NOW than have to do it again.
Posted on: 2008/1/12 2:18
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RE:Friday Chat 01.11.08 |
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On Sabbatical
Joined:
2006/7/6 0:00 From Augusta, GA (85 383 stroker)
Posts:
3213
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The B MAN!! Glad to see you here
Posted on: 2008/1/12 2:09
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RE:ARCADE ACTION |
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On Sabbatical
Joined:
2006/7/6 0:00 From Augusta, GA (85 383 stroker)
Posts:
3213
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Here is one....try harder
Posted on: 2008/1/12 2:08
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New arcade game for me...check it out |
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On Sabbatical
Joined:
2006/7/6 0:00 From Augusta, GA (85 383 stroker)
Posts:
3213
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T-Mec
http://atlanta.craigslist.org/ele/534700094.html I am picking up this little monster tomorrow, here are some example pics. Mine is going to be a one player game.   
Posted on: 2008/1/12 2:03
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RE:Friday Chat 01.11.08 |
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Quote:
They look like they're trying to do some sort of weight loss routine. Tae Bo, Cat version.
Posted on: 2008/1/12 1:59
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RE:Friday Chat 01.11.08 |
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The party is definately gonna start at my house - the boss just came by my desk and gives me a bag......
Heavy bag......... I look in bag and see a blue box........ I look at the blue box........ Crown Royal!!!!!!! Not my #1 choice, but for free I can make adjustments........
Posted on: 2008/1/12 1:58
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taking vet to tech school |
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Senior Guru
Joined:
2007/12/26 0:00 Posts:
1028
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wrenches.they say my fan prolem is in the high pressure side of air con. dont ask me what they mean..but she does still have the sensor in the comp. and not in high line as they were recalled to do..again just what there instructor toll me ...so the verdict in a few weeks...have checked wires and none seem grounded...winter here so not driving it,,,times i have she runs good and temps stay 195 210 guessing she had a 195 stat and thats fan running all time and cold out...but air comp wont come on ..and they will do the work free labor i pay parts... i figure why not
Posted on: 2008/1/12 1:57
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rear window tint |
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Senior Guru
Joined:
2007/12/26 0:00 Posts:
1028
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anybody do there own ? how ? and where buy it?
Posted on: 2008/1/12 1:50
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RE:Tata Nano |
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Mega Guru
Joined:
2007/8/31 0:00 From Central PA
Posts:
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But I bet there will be a thread on a website somewhere titled:
Tata Nano vs. Crossfire?
Posted on: 2008/1/12 1:46
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Currently "Between Vettes".
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floppy windows |
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Senior Guru
Joined:
2007/12/26 0:00 Posts:
1028
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what keeps the door windows from floppin when open door ? drivers side is floppy (glass leans in when open door)
Posted on: 2008/1/12 1:45
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RE:Friday Chat 01.11.08 |
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Mega Guru
Joined:
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Posts:
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Cat turd day?
 That's like, everyday at my house...
Posted on: 2008/1/12 1:44
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Currently "Between Vettes".
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RE:CONGRATULATIONS CASEY! |
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Senior Guru
Joined:
2007/12/11 0:00 From Raleigh, NC
Posts:
274
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Quote:
Cheers mate Case -- what I think Runner was trying to say is, most of us have never heard ladies referred to as "slims". Must be a local thing for Tommy T-bone; it sure isn't part of American vernacular! "Virginia Slims" is a brand of cigarette marketed here to women. Maybe that's the connection ...  Please tell us when you find out what issue your car will be in. I want to get a copy and I'm sure a lot of others do as well. You're a celebrity now! 
Posted on: 2008/1/12 1:44
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RE:Friday Chat 01.11.08 |
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Trivia Winner
 
Joined:
2007/12/29 0:00 From Rolla, Missouri
Posts:
422
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Don't tell me somebody said Caturday.
Posted on: 2008/1/12 1:42
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RE:Tata Nano |
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Trivia Winner
Joined:
2007/12/29 0:00 From Rolla, Missouri
Posts:
422
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Quote:
It's also a city car. It would not last 10 minutes on a modern American or European super highway. Hell no, it would get run over and smashed flat. 
Posted on: 2008/1/12 1:39
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RE:Friday Chat 01.11.08 |
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Mega Guru
Joined:
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Mad Cat Disease....
We haz it!
Posted on: 2008/1/12 1:30
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Currently "Between Vettes".
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RE:Tata Nano |
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Grand Imperial Pooh-Bah
 
Joined:
2005/9/7 0:00 From San Pedro, CA
Posts:
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I don't see how it will help a developing nation... they can't rub 2 nickels together, let alone cough up $2500.00.
It's also a city car. It would not last 10 minutes on a modern American or European super highway.
Posted on: 2008/1/12 1:27
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RE:Friday Chat 01.11.08 |
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Webmaster
 
Joined:
2005/9/9 0:00 From San Pedro, CA
Posts:
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They look like they're trying to do some sort of weight loss routine.
Posted on: 2008/1/12 1:25
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RE:hi all |
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Guru Emeritus
 
Joined:
2005/9/8 0:00 From Los Angeles
Posts:
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Can I say "Welcome Monkey" :thumbright:
Posted on: 2008/1/12 1:20
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_________________
Edlebrock Heads, 2030 cam, X-ram w/EGR, 1.6 R/R, Bored TB´s, AFPR, Pro-built Tranny, Vigilantly 2600, Transgo, Dana 44 3.54, Hardened Pushrods & Head Bolts, Custom performance chip, K&N, Double roller timing chain, Aluminum radiator & flex hose, MS |
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RE:Three Cheers for our Newest Member - pologreen! |
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Senior Guru
Joined:
2007/12/11 0:00 From Raleigh, NC
Posts:
274
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You're welcome even if you do have the same color car as Bogus!
Posted on: 2008/1/12 1:09
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RE:I'm new here.... |
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Senior Guru
Joined:
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Posts:
274
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Welcome!
Posted on: 2008/1/12 1:08
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RE:Tata Nano |
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Chair-man of the bored
 
Joined:
2007/12/10 0:00 From Homestead USA
Posts:
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I wish I could buy about 40 of them. 20 for South Beach and 20 for Key West. Rent them by 4 hour periods. I'd be rich, I'd be rich...I'D BE RICH Ah ,ha,ha,ha Aahh,ha,ha,ha
Posted on: 2008/1/12 1:01
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RE:Friday Chat 01.11.08 |
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[size=18:781ce14ef5]It's Friday, it's about 5pm, it's time to PARTY! [/size:781ce14ef5]
Posted on: 2008/1/12 0:55
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RE:Paint/autobody: Anybody here do their own work? |
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Senior Guru
Joined:
2007/12/11 0:00 From Raleigh, NC
Posts:
274
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Quote:
Another thing that I could never get a straight answer is.......if you look at a C4, it is really chopped up into sections. If you had a way of mixing the exact color over and over, would you really need a "Big Gun" to spray large areas??? The Clamshell is the only thing that bothers me it is a huge area...but the rest of the car is small touch up style areas with lots of breaks for masking off. If you are not changing colors and only restoring the paint, could you not paint section at a time??? You could probably get away with that if: 1) you were a really good painter and 2) the paint wasn't metallic.
Posted on: 2008/1/12 0:50
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RE:I'm new here.... |
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Elite Guru
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Welcome to C4 Nirvana!
Posted on: 2008/1/12 0:47
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RE:Three Cheers for our Newest Member - pologreen! |
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Elite Guru
Joined:
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Posts:
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Polo green is an awesome color.
 Welcome!
Posted on: 2008/1/12 0:45
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RE:Welcome Z51Jeff!!!! |
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Elite Guru
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Posts:
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Welcome and for being our 1000th member, you get this one of a kind, never to be offered again prize. And that prize is the warm and fuzzy feeling that you get from knowing that you'll always be the 1000th member...... :thumbleft:
Posted on: 2008/1/12 0:42
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I hate sporks... |
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RE:hi all |
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Elite Guru
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2184
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Welcome to the monkey house. Apropos, huh?
Posted on: 2008/1/12 0:37
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RE:Greetings from the Great White North (aka Canada) |
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Elite Guru
Joined:
2005/9/17 0:00 From Downbound train, NC
Posts:
2184
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Carpet the garage?
But welcome!
Posted on: 2008/1/12 0:33
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_________________
I hate sporks... |
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