sorry 88 c4 coupe

Ok does anyone have or can anyone point me in the direction of the diagrams that show what screws go where in the interior please. I lost my sheet. Thanks.

looks sweet.

yes I mentioned that. Sorry for the delay. Putting in new carpet has been a pain in the arse. Didn't realize I was going to have to cut holes and trim. Anyway the side bolsters on the bottom and back covers needed to be stretched more for a tight look. Had to overlap it in the back alittle so the front didn't have wrinkles. I don't know if it was the skins or the seat cushions I bought of off ebay. Cushions cam in a mid america motorworks box(brand new). Don't know for sure but I made it work.

vinyl, pretty good quality, not a perfect fit so they will need some tweaking. these are NOT covers they are skins. they are hog ringed on new seat foam.

ended up being the metal brake booster I installed. I need to adjust the rod. It was locking up the front breaks. I guess since the weather here in arkansas heated up it caused fluid to put enough pressure on it to do this. I should have double checked it anyway. Is there a procedure for adjusting this booster and pedal play?? I want to make sure I don't cause anymore problems. My back can't handle laying down and getting out of the floor board again.

most helpful. Thank you.

ebay member lc-0801

support@leathercover.net

they are from china.

well for $200 these are pretty nice. Not a perfect fit but I tweaked them. Bought some new foam as well. One side down. Black with lite blue stitching.

Not fully. My freshly rebuilt tranny pooped on me so the vette is at the shop again.

ok finally found a pic but not a close up pic. Is the white bar in my first pic suppose to be there? I haven't seen it on any other vettes.

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mine is the 601-105 factory 3pc.

is it not suppose to hang down even with the left and right pieces? I am probably stupid but yours doesn't look right to me.

I have it layed out on the floor. Is this the correct orientation?





My apologies if I am not following your pics?

sorry this has been asked many times but i cant find the answer. Got the kit with brackets and hardware. Having a very hard time getting this to fit on my 88. I checked the kit part numbers and I do have the correct one. Doesnt want to go into position bc of the tabs sticking up on each side. can anyone post some detailed pics of theirs please??

Lol. Sorry I live in Arkansas so I was wondering.

You mean AK(alaska)? Or did you mean AR(arkansas)?

ok so I actually drove it today. Wow!! I can stop!!! Lol. I think the booster has been bad since I have had the car. It did sit for 12 years before I got it.

thank you. Yes really wasn't bad. The booster on my 90 300zx was alot harder. It has 4 bolts on the back end. I am 6ft 3 238 so removing the seat was a must no matter what. Still sucked trying to lay down in there. I put my legs in the hatch area for room while laying on my back.

Ok the plastic unit was cracked and no good. Upgraded to the metal unit from zip corvette. $159 plush shipping was the price.

cracked leaky booster

took me 1 hour to finish.

tips: remove driver seat and support bar infront of brake mc

tools needed:
1, 2 or 3 extensions
ratchet, swivel(optional), 1/2 inch deep socket, 13 mm deep socket
zr1 metal brake booster(came with new 13mm nuts for front and back of booster
optional 8mm high temp silicone hose for booster check valve to upper plenum



disconnect battery of course
take out drivers seat of course

take 6 bolts off of support bar in front of brake master cylinder.


3 screws on cruise unit come out so you can access 2 of the 3 bolts on upper side of support bar.


take off 2 bolts on brake mc and push forward


take panel near pedals off(unscrewed them by hand)
take off 2 1/2 inch nuts under dash. Accelerator pedal is easy. Steering column side requires 2 extensions and 1/2 deep socket. Disconnect pin holding pedal to rod(mine was already gone).


pull booster out install new one.


reinstall in reverse order.
Luckily my large hands or 2 fingers were long enough to get the column side nut started.

Mods please cleanup any way you wish. I am not very good at write-ups but I wanted to try and give back alittle. Thanks.

Wow. Thank you. Extremely helpful. I was looking near the brake booster area. Thank you.

Got some goodies in the mail today. Metal brake booster from zipcorvette and some 3/8 silicone vac hose. I am a little disappointed in the booster packing. Paint is scratched off in a few spots. Oh well I will repaint it.



Ok I have read I can just cut the plugs off of the air pump connections. Tap them up and hide them. What about the egr plug? It is obviously in bad shape and I have deleted the egr. Planning on eventually getting the ecm reprogrammed. Cut it or leave it?

Ok thanks. I will check first thing tomorrow. Car was apparently in a small front end collision so I am trying to put things back where they go. Some things are missing, some aren't even there. But is was a free car so I am not complaining.

Ok fixed the spacer and bracket. Belt is even now.

ok I drew a line so maybe it will help me get my meaning across. Again I apologize. The fuel tank hard line is capped directly by the drivers side tire. I can't find where it goes from there. Where is the connection towards the cab at??

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k thanks. I have got the part from the canister to the end of the hard line. Problem is it ends on the drivers side tire well. So I should look for a line going around to the back of the engine?? What does it connect to back there? Is there a vent hard line that goes under the car all the way to the tank? I haven't gotten under it to check yet. I have the hvac that t's to the intake vac line and canister line.

Yes I have been following the diagram under the hood. just having a problem beyond the diagram. Sorry if I am confusing you or myself. I appreciate the help.

3/8 ok. Same as the brake booster hose as well. Which I am replacing the brake booster tuesday. Has a crack in it.

Any pics on where the fuel tank vent vac hose goes??

Thanks guys.

ok I am getting the 88 L98 back together. New injectors from fuel injection connection, egr delete, air pump delete, new vac hoses, plugs, wires etc.

first question. what did I do wrong here? The pulley that replaces the air pump sticks out too far and the belt is angled??


Next question is where does the vac hose to the fuel tank go from here?? It has a white vac cap and was like this when I got the car. I can't find or figure out what it connects too.



next is the air pump hose on the pass side that is black and runs down the manifold. What size cap do I use?


lastly. The vac hose coming off of the tb. What size hose is this?? I am guessing 8 to 10mm??


almost forgot. Cant find these on any websites yet. Clip that holds hood release cable. Where can I get these other than the dealer?

new egr is sold.

awesome thanks. How much do the cables and etc cost??

I am looking to get my 88 c4 computer chip tuned reprogrammed, flashed or whatever it is. Suggestions on who what when and where please? Only thing I have done or need done really is egr deleted from ecu so I dont get a code. Well anything else? Thanks.

Ok I have a little bit of a problem. Ordered some intake base bolts based on a chart of sizes I found on this forum. The sockets cap is noticeably shorter. Will it be ok or time to re-order longer ones.

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sold

yes sir. Ok great. On my way to the hardware store.

AI am really off my game this week. I thought I had it bookmarked but I can't find the manifold plug size for the L(8. I have found the lt size. Is it the same? Deleted the air pump crap and need to cap the manifold. Sorry I have searched for 30 minutes and just can't find what I am looking for. Please help. Thanks.

duh. Cold star. I am an idiot. Thanks. Ok got them all but one.

ok is there a write up or specifically a pic of replacing the fuel rail o-rings?? I am installing new o-rings from fic and I have a really big o-ring and maybe one smaller I can't figure out where they go?? Are 2 of the smaller o-rings suppose to go on the front of the fuel inlet and outlet or?? If I use one on the fuel pressure regulator I have one left or one short. Sorry I am confused and can't find and pics. Please help.



does the big o-ring go here??
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do I use 2 o-rings here or are they not apart of the kit??
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Do I replace this o-ring on the fpr??
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yes an 88. Yeah i bought the bosch 3's from fic. I had researched alot on this forum and decided that was the first thing to do to the car. I also deleted the egr and air pump with the tpis unit. Very nice product.

k great. I actually figured the damn clips out right before I read you post. Thank you. Injectors look kinda crappy with only 30,00 miles on them. Looks like 1 was possible leaking and one or two were about too. Don't know if it was the seal or injector.

Ok ordered from fic. Option wasn't available when I ordered my injectors. Their website has the paypal option fixed as well. Awesome. I will try again on the clips. Thanks.

Who sells a fuel rail o-ring kit. Since I am lazy and haven't finished my install I have decided to do a few more things while I am in there. Also I need a good article on marking a removing the distributer. Can anyone direct me to one. Thanks.

Forgot one thing. How do you get the damn clips off the injector fuel rail. I am trying to figure it out without damaging them. I am sure it is simple I just can't process how to do it. Sorry.

$50 shipped for the new egr.

Jeff I got them from bolt depot. Search my posts and a list of the bolt sizes are posted.

got my egr block offs today from Custom Billet Works Inc. Quality products.
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I live in Russellville. Various sites in Arkansas but no forums.

Bought this for my 88 corvette c4. Decided to go egr delete kit. Brand new never used from rock auto. Gasket included.

$60 shipped.
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used but working perfectly air pump assembly $15 plus what it costs to ship to you.
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32,000 miles on original gm egr off my 88 vette. fully functional egr. I cleaned all the rust off and tested it. Works perfect. Should have done that before I bought a new one.

$25 shipped.

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PAYpal please. I am paypal verified. I am located in russellville, arkansas. Thanks.

ok. So use the "right stuff" on the walls. Anywhere else?? Thanks and sorry for all the questions.

BTW the valve cover is on my desk at work. One of the girls lite a candle. Gotta have something to do at work so why not paint my valve covers.

ok. What about using a soft wire brush?? I did this on the runner and upper intake surface. You think that enough or go ahead and try the drill bit technique?? Also will I need to pull the dist to take the lower intake off??? No ex[erience removing the disty so I was just wondering if it was going to be a pin or not.

BTW I hate the damn torx bit bolts. Glad I an switching to socket caps. I had bought the fel-pro set for the upper everything.

Ok so since I have the valve cover, intake, runners etc off and I have the gaskets should I go ahead and replace the gaskets between the lower intake and the heads?? Injectors are off for replacement as well. OR maybe reseal some of the bolts?? Not leaking as far as I can tell but just thought since I am in there.

Here are some progress pics. Doing some engine cleanup.

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awesome. Thank you. I appreciate it guys.

Anyone know the diameter and thread pitch of one of the 4 bolts that hold the throttle body on?? I am wanting to replace them with some stainless socket cap bolts. Also anyone have a list of hose clamp sizes for the l98?? I am wanting something better than the worm drive clamps. I was thinking some t-bolt clamps for the rad hoses and some of the other hoses.