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| 92LRC | Intake gasket swap out complete (almost) | ||
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Guru Newb
 
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Well Ive just about finished replacing the intake manifold gaskets (had an oil leak). Also cleaned up and painted the manifold while I was at it.
I say almost complete because it looks like the throttle cable connection is sticking a little and producing really high revs. Any suggestions here? Is there some type of lube I should put on this? Anyway heres a few pics of the project as it went along (sorry no pics of the re-install I ran out of batteries for the camera). The nastiness that was my TB and intake. Im pretty sure these items had never been cleaned before (car has 112K). [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0821.jpg[/IMG] [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0830.jpg[/IMG] I had to practically chisel out the old TB gasket because it had hardened and welded itself to the intake. [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0839.jpg[/IMG] I took a tip from another poster about using a shop vac to get all the coolant out (I changed that while I was at it) [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0822.jpg[/IMG] Got the boy to lend a hand [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0828.jpg[/IMG] Almost 3 cans of TB cleaner and this is what was left at the bottm of the pan [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0844.jpg[/IMG] Cleaned up painted and just about ready to go. [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0843.jpg[/IMG] Freshly cleaned out TB installed and basically finished product (I hope I put it all back together right at least I didnt have any left over parts:lol  [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0848.jpg[/IMG] [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0852.jpg[/IMG] [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0853.jpg[/IMG] |
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Posted on: 2009/4/9 13:33
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| pianoguy | Re: Intake gasket swap out complete (almost) | ||
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Guru Emeritus
 
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Nice job!! Maybe some kind of dry lube that wouldn't gunk up with dirt?
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Posted on: 2009/4/9 13:40
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1996 LT4 �Before you criticize someone, you should walk a mile in their shoes. That way when you criticize them, you are a mile away from them and you have their shoes.�- Jack Handey |
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| BrianCunningham | Re: Intake gasket swap out complete (almost) | ||
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Senior Guru
 
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Came out real nice
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Posted on: 2009/4/9 13:58
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Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/ 383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes NCCC Governor: http://BayStateCorvetteClub.com |
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| 92LRC | Re: Intake gasket swap out complete (almost) | ||
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Guru Newb
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Quote:
not as nice as your avatar thanks |
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Posted on: 2009/4/9 14:05
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| BillH | Re: Intake gasket swap out complete (almost) | ||
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The Stig Moderator
 
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No, don't lube the cable, not a good idea.
When you cleaned the throttlebody, did you pull the Idle Air Control valve? If not, it wouldn't supprise me that there's some gunk in it from the cleaning causing your problem. |
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Posted on: 2009/4/9 14:08
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Every man dies but not every man lives. |
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| 92LRC | Re: Intake gasket swap out complete (almost) | ||
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Guru Newb
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Quote:
I didn't remove it during cleaning. How do I get to it now? Do I have to remove the TB again (please say no)? |
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Posted on: 2009/4/9 14:21
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| bogus | Re: Intake gasket swap out complete (almost) | ||
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Grand Imperial Pooh-Bah
 
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Shouldn't.
It just takes a big socket, but you should be able to get it with the TB on. For some reason, a questionable IAC becomes bad when the TB is cleaned... |
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Posted on: 2009/4/9 14:40
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| BillH | Re: Intake gasket swap out complete (almost) | ||
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The Stig Moderator
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Yea, sorry. But at least it's clean now and the gasker shouldn't stick.
But, first, verify that the cable isn't sticking. First, look just above the throttle spring & cable assy., there's a set screw that the throttle stop (black) rests against at idle. Is the stop against that screw? Slowly open the throttle a little with your foot and let off slowly. Is that stop still against that screw? If there's a gap, something's sticking, may be cable,may be the throttle body. You may want to pull the cable off the TB and run it with your hand at close to the length where it idles, if you don't feel any thing, the cable's OK. Now run the TB w/o the cable attached open & shut slowly to check for stick. If all that's Ok, now pull the TB. The IAC is under the throttle position sw. (large wrench size). Pull it and take a look. DO NOT push or pull on the pintle. You can clean any deposites with the TB cleaner. The FSM states "do not remove the thread locking compound on the threads id you're going to reinstall". On reinstall, start the eng for 5 seconds and turn it off for 10 seconds. Than restart and and check idle speed. |
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Posted on: 2009/4/9 15:02
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| 92LRC | Re: Intake gasket swap out complete (almost) | ||
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Guru Newb
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Quote:
I'll try that later because that is exactly where it's sticking. The black piece stays about 1/16" to 1/8" off the stop. I can move it back manually and then it will stay there but as soon as I give it gas it goes back to the being off. Thanks I'll post results. |
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Posted on: 2009/4/9 17:05
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| Matatk | Re: Intake gasket swap out complete (almost) | ||
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Webmaster
 
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You could be experiencing a worn throttle body, which is common (happened on mine). The shaft that holds the butterflys wears an uneven pattern into the side of the TB and causes it to stick slightly. Sometimes you'll notice when you pull out to a light the RPMs are too high, but if you blip the throttle it goes away.
You can use some graphite to lubricate the shaft, which is what I did and it works like a champ. Some people send their TBs out to get the shaft hole bored out and a bushing installed, but I haven't seen the need yet. Other than that congrats - looks good! Matthew |
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Posted on: 2009/4/9 19:56
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| 92LRC | Re: Intake gasket swap out complete (almost) | ||
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Guru Newb
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Quote:
first let me say that your avatar is also excellent I don't think it's the TB shaft only because it was fine until I cleaned it. I pulled on the cable a couple of times and it seems to have reset itself. I'm going to take it for a long drive tomorrow (no time today) and see how it works out then. Thanks for the input. |
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Posted on: 2009/4/9 21:39
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| 92LRC | Re: Intake gasket swap out complete (almost) | ||
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Guru Newb
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this car is going to eventually make me lose my mind (or what's left of it).
The idle seems to be ok now so that prob is solved. But it still seems to be leaking, less but still there. I just took it for a 10 mile ride and I was smokin when I got back and I saw a new spot on the garage floor. To top it off I broke the alternator connector so I've got to go and buy the replacement part for that.  |
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Posted on: 2009/4/10 17:46
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| BrianCunningham | Re: Intake gasket swap out complete (almost) | ||
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Senior Guru
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How long did you wait before firing it up?
You need at least 24hr for the sealant on the 'china wall' to cure. Quote:
Bounce bounce bounce |
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Posted on: 2009/4/10 19:39
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_________________
Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/ 383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes NCCC Governor: http://BayStateCorvetteClub.com |
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| 92LRC | Re: Intake gasket swap out complete (almost) | ||
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Guru Newb
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Quote:
Waited about 18 hours, the suspense was killing me. |
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Posted on: 2009/4/10 20:05
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| BillH | Re: Intake gasket swap out complete (almost) | ||
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The Stig Moderator
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Quote:
Not necessarly so when using the Right Stuff, Brian. Done correctly, you can almost dive it immeadiately. I drove mine right after I finished the assembly and haven't had a leak. That was 3 years ago. |
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Posted on: 2009/4/10 23:03
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| 92LRC | Re: Intake gasket swap out complete (almost) | ||
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Guru Newb
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It gets better!
Now I have what seems to be AF pooling on the block.  [IMG]http://i210.photobucket.com/albums/bb33/92LRC/IMGP0871a.jpg[/IMG] Any suggestions? Thanks |
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Posted on: 2009/4/11 15:42
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| Jeffvette | Re: Intake gasket swap out complete (almost) | ||
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Elite Guru
 
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Quote:
Get a pressure checker. |
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Posted on: 2009/4/11 17:29
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