Ecotec turbo sandrail.

TurboLark · Post by **TurboLark** » Thu Jan 18, 2007 10:59 am

Well, I got my sleeved block. Will get pictures up shortly. Have not been able to work on it because i threw my back out. Waiting for my piston rings anyway. I think I could have reused the piston from that cylider. It looks scuffed more than the others, but not too bad. Better safe than sorry I guess.

Vince64 · Post by **Vince64** » Sat Jan 20, 2007 10:04 am

those motors have great potential with boost

1,600 hp

Ever watch drag racing? Jason Hunt races an ecotec with my companys turbo manifold and runs 7.5s in the quarter.

Ive got one of Gm's drag racing heads on my desk @ work and its a work of art, and yeah its one of those 1,000+ hp ones

Plasticfantastic · Post by **Plasticfantastic** » Sat Jan 20, 2007 12:14 pm

Thanks for the post Vince! Any stories about race Ecos is welcome, even if they end badly

!
I didn't see much Eco product on your companies website? Any interesting bits in development over there?

Thanks,
Jeff-

TurboLark · Post by **TurboLark** » Sat Jan 20, 2007 6:57 pm

Here are pics of the stock and sleeved block for comparison.
Stock

Sleeved

Plasticfantastic · Post by **Plasticfantastic** » Sun Jan 21, 2007 11:09 am

Sexy!

I'm sure its just an optical illusion because the tops of the new sleeves are squared off, but they look thicker than the old factory sleeves.
Any reason to try and get a larger bore out of these things? I know the old adage about "no replacement for displacement" but in these turbo 4s, seems bigger is not always better?

Jeff-

TurboLark · Post by **TurboLark** » Sun Jan 21, 2007 1:11 pm

Plasticfantastic wrote:Sexy!
I'm sure its just an optical illusion because the tops of the new sleeves are squared off, but they look thicker than the old factory sleeves.
Any reason to try and get a larger bore out of these things? I know the old adage about "no replacement for displacement" but in these turbo 4s, seems bigger is not always better?

Jeff-

They seem to be real close to the same thickness, just much stronger since they are all steel.
You can get it sleeved for 2.4l pistons(3.5"), but like you said, with a turbo it isnt really going to make much difference in power.

TurboLark · Post by **TurboLark** » Wed Feb 07, 2007 7:16 pm

Motor back together and back in. One more evening to hook it all up and fire it.

Plasticfantastic · Post by **Plasticfantastic** » Thu Feb 22, 2007 8:07 am

Hey Phil, get it fired again?

Jeff-

TurboLark · Post by **TurboLark** » Thu Feb 22, 2007 9:10 am

Plasticfantastic wrote:Hey Phil, get it fired again?
Jeff-

yup, went to Glamis this past weekend. Ran great at 16lbs of boost...until the turbo self destructed. No harm to the engine, the intercooler caught the parts. Ordering a new GT35r turbo today...700hp potential!

Plasticfantastic · Post by **Plasticfantastic** » Fri Feb 23, 2007 10:10 am

Don't you sand guys have a saying about "If you're not breaking parts..."? Geez Phil, keep it going for a trip or two

.

Jeff-

TurboLark · Post by **TurboLark** » Fri Feb 23, 2007 10:17 am

Plasticfantastic wrote:Don't you sand guys have a saying about "If you're not breaking parts..."? Geez Phil, keep it going for a trip or two .

Jeff-

That would be nice for sure.

After the turbo, the only real thing to break will be the trans. This summer will probably see a swap over to a Medeola trans, then crank the boost back up.

TurboLark · Post by **TurboLark** » Wed Jan 23, 2008 8:40 pm

Figured I was about due for an update.
The engine runs great. I have ditched the GT35 turbo for a smaller GT3076R turbo. I have 8lbs of boost at 2200rpm and 15 lbs at 3200rpm. This combo made 266rwhp and 264rwtq on a Dynojet dyno. this equates to 380-400hp at the crank since it has to go thru the Mendeola trans and 930 CV's. Took the car to the Dumont dunes this MLK weekend and ran it for 3 days. Nice to be able to pull 4th gear up comp hill! My weekend ended when I bent a rear trailing arm while either jumping or hitting the whoops hard in 4th gear(around 70mph).
I am going to try instaslling a set of Comp Cams turbo cams to see if i can get a bit more rpm out of it(drops off at 6000rpm) and will try a .63 turbine housing in place of the .48 I have now. If what I have found is true, I should make more HP, spool quicker(or at least the same), and extend the rpm range.
Stay tuned.
Here is a pic of the car in the dunes.