When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
i know this is kinda an old thred BUT OMFG NICE SET UP ! i am a turbo lover (i have a 96 eclipse with a 20g in it) i just blew the engine in my vett so now its time to UPGRADE i hope you dont mind if i use your turbo set up as a refreance for a similer set up.
i know this is kinda an old thred BUT OMFG NICE SET UP ! i am a turbo lover (i have a 96 eclipse with a 20g in it) i just blew the engine in my vett so now its time to UPGRADE i hope you dont mind if i use your turbo set up as a refreance for a similer set up.
Glad you brang it back to the top, somehow I missed it and I always read joby's stuff.
This is an old thread, but I see no reson to start a new one. Almost nine years ago that I did my last update. I ran the corvette hard that summer 2008 and also did some more minor modifications. The last one was to try reducing back pressure.
Before, the same used with the turbo also:
And after:
I was going to use full flow mufflers, but I ran out of time.
Head gaskets and heads were ok. Only one exhaust valve slightley bent.
All piston heads, ringlands and piston rings were ok. No problem at all visible on the combustion side.
The direct cause was failing rods. Many of them were bent, and that caused the weights on the cranc to hammer on some of the pistons under the wrist pin. as seen on the picture. It is easiest to see on piston 3.
Cap walk was also visible but that was not the cause the sudden mechanical noice.
The camshaft was i seven pieces.
I think that the stock parts did a good job at about four times the stock power.
After this I parked the Corvette and started collecting parts over some years.
Both AFR heads, the Holley Stelath Ram and turbo system could be reused.
I found the Dart block for sale and the prize was right. The owner was planning to build an engine but ended up buying a new complete one.
The next step was to decide what parts to fill the block with.
* I wanted a strong bottom end.
* I din not want to custom make any engine parts.
* Higher RPM and less torque. With the turbo I get as much torque as I want anyway ...
* No overbore on the new block.
* Longer connecting rods.
* Dished pistons for lower compression.
I investigated options to build a 347 CUI using 3.25" stroke ( 327 crank ) or a 372 CUI using 3.48" stroke ( 350 crank ).
I decided on building a 372 CUI because of a more crank and connecting rod options.
If building a 383 CUI you have an almost infinite set of options and kits. For the 372 CUI it is a different story.
This is some of the parts I finally decided on:
Forged steel Lunati Sledgehammer Crankshaft with 3.48" stroke.
This is awesome, glad to see you revived this thread or i'm sure a lot of us newer members would have never seen the old thread, That's a hell of a lot of power 10 years ago, still is pretty quick now!
05-26-2008, 09:55 PM
