C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Wow. That was exciting....

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Old Nov 26, 2005 | 10:16 AM
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Default Wow. That was exciting....

I had to change the left (drivers side) exhaust manifold gasket over the holiday weekend.

It was so exciting... especially when I realized that GM expects me to remove the AC Compressor so I can remove the last support strut... Oh, and removing the battery so I can reach the last bolt at the way back...

I lost one 10mm deepwell socket... it was sentimental to me... it fell down into the firewall somewhere... never to be seen again. damnit

All in all, the task took about 4 hours, but I didn't kill myself. Wednesday afterwork, I jacked up the car, then removed the tires and the brakes (hoped to turn the rotors, but one is gnarly, so I ordered new from NAPA). Thursday morn, I removed the left cat (chasing the leak, I wanted to be sure the cat was ok, it was) and took the engine apart. I was able to swap out the gasket and button up the engine compartment on Thursday, that left putting the brakes back together (waiting on rotors, should be in this AM).

Not a bad project... just requires taking everything apart!

I will do some photo documenting and share it as a C4 Guru tech tip early next year!
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Old Nov 26, 2005 | 11:58 AM
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Hey Bogus...

I feel your pain, look in my projects page... Went through the same ordeal and then some

Ahhh..... don't you love the journey.... Forged LT4 396 on the way

Mo
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Old Nov 26, 2005 | 12:19 PM
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I am installing headers on my 93 so on the drivers side cat I cut the support bracket of as I couldn't get a socket on it.

Fred
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Old Nov 26, 2005 | 12:57 PM
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Hmmm, DS wasn't a problem on the '88; even the PS wasn't a real PITA.

I used stock gaskets, which go in as three separate pieces.
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Old Nov 26, 2005 | 01:36 PM
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The Victor gaskets I used are 1 piece...

And you are right, the PS isn't that bad... but on the later LT1s, the manifold is obscured by the AC compressor, the ASR module and all the plumbing for the AIR system. It's really tight in there.
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Old Nov 26, 2005 | 02:54 PM
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Originally Posted by bogus
The Victor gaskets I used are 1 piece...

And you are right, the PS isn't that bad... but on the later LT1s, the manifold is obscured by the AC compressor, the ASR module and all the plumbing for the AIR system. It's really tight in there.
Hey Bogus....just like having a good woman.
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Old Nov 26, 2005 | 05:48 PM
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Originally Posted by ittlfly
Hey Bogus....just like having a good woman.
Yea, like a high-maintain woman. I'm just haven't adjusted to having to remove half of the accessories to get to one bolt. I think that the major objective of auto designers is to make it as hard as possible for an individual to do his own work.
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Old Nov 26, 2005 | 05:56 PM
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Originally Posted by bogus
The Victor gaskets I used are 1 piece...

And you are right, the PS isn't that bad... but on the later LT1s, the manifold is obscured by the AC compressor, the ASR module and all the plumbing for the AIR system. It's really tight in there.

I've learned that these things called "wobble extensions" sometimes make life a little easier. Oh, and Gearwrenches. Wish I had known about those things when I changed plugs (and everything else) the first time....
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Old Nov 26, 2005 | 06:56 PM
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Originally Posted by bogus
I lost one 10mm deepwell socket... it was sentimental to me... it fell down into the firewall somewhere... never to be seen again. damnit
man, i feel for you, I too lost a 13mm Crafstman deep socket in and around the heater blower motor area. I went so far as to remove the side panel in hopes of recovery, but it was not to be found...Fished around for 20 minutes or so with a telescoping magnet....nothin'!!!
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Old Nov 26, 2005 | 07:22 PM
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Originally Posted by bogus
I lost one 10mm deepwell socket... it was sentimental to me... it fell down into the firewall somewhere... never to be seen again. damnit
sure you will...as you are driving down the freeway at 70, it'll work loose and come out under the car and kick up to crack the drivers windshield behind you.
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Old Nov 26, 2005 | 11:17 PM
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The 10mm is part of a set that my late brother gave me, geez, 15 years ago! I was actually attached to the stupid thing... it's sad that it is lost. I hope to find it when I remove the engine or do a clutch swap.

I might still find it... I will go looking tomorrow.
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Old Nov 28, 2005 | 12:37 AM
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Originally Posted by Lichen
Yea, like a high-maintain woman. I'm just haven't adjusted to having to remove half of the accessories to get to one bolt. I think that the major objective of auto designers is to make it as hard as possible for an individual to do his own work.

What they really don't want you to know is that they build the entire car around the heater core.
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Old Nov 28, 2005 | 12:44 AM
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Originally Posted by Sleazy Rider
sure you will...as you are driving down the freeway at 70, it'll work loose and come out under the car and kick up to crack the drivers windshield behind you.
Ahhhh..... the last great act of desperation!
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Old Nov 28, 2005 | 05:52 PM
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nah.. you will find it on the driveway the day after you repla ce it.
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Old Nov 28, 2005 | 06:08 PM
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Originally Posted by Lichen
..... I think that the major objective of auto designers is to make it as hard as possible for an individual to do his own work.

Here's another thought for you'all............. Reverse-engineering! I'll explain.

Engineering departments that have been in the business forever... They reached a point where (they've been at this point for many years now) can engineer past the current problem, and engineer-it for failure at some point-in-time in the future.

Designed-obsolecence.

Ever stop and think about how much $$$ is made at the dealers parts counter??? Mind-boggling isn't it?

I know,,,,,,,

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Old Nov 28, 2005 | 07:10 PM
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only job on my corvette that takes less then 2 hours is filling the gas tank.

oh yeah. gotta work at work for at least 2 hours to make enough money even to do that...
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Old Nov 28, 2005 | 07:17 PM
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Originally Posted by nonetooclose
What they really don't want you to know is that they build the entire car around the heater core.
Yeah, what bogus went through is tough, the #1 toughest thing I've ever had to do was my heater core. That was absolutely unpleasant to say the least.
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Old Nov 28, 2005 | 09:33 PM
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Originally Posted by CoolVette86
Yeah, what bogus went through is tough, the #1 toughest thing I've ever had to do was my heater core. That was absolutely unpleasant to say the least.
all that I have read about replacing a heater core makes me seriously want to sell my C4 BEFORE it goes bad!!! What is the approximate lifespan of a heater core anyway? I have a '95 with 70K miles...???? I am no fan of being an upside down contortionist, as I have a problem of being on my back for any length of time...I start to get very nauscious . And I am not about to pay big $$$ to have it done at a shop..

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Old Nov 28, 2005 | 10:00 PM
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Originally Posted by bogus
The 10mm is part of a set that my late brother gave me, geez, 15 years ago! I was actually attached to the stupid thing... it's sad that it lost. I hope to find it when I remove the engine or do a clutch swap.I might still find it... I will go looking tomorrow.
It is strange you mention that because on mine I thought I had a 7/16 deepwell gone in the void , searched w/mag etc. zero. When I took it for a test spin around the block today I heard something ,backed up and low and behold .....take a slow first spin.
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Old Nov 28, 2005 | 10:32 PM
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if this makes you all feel better, my 92 has 140k miles on it and the heater core is a-ok.

I think the trick is to keep the coolant fresh.

I changed the heater core in a friends' moms 1981 Escort. It took all of 20 minutes.
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