1983 Oldsmobile Cutlass Supreme Sedan LS Turbo Build

GroceryGetter83

LS Mafia
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Sep 18, 2018
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So it's actually probably faster! You built yourself a bad ride.
Yes sir. That 9.6 pass was with 20 psi of boost. With a better 60' and dialing in the boost curve, I think its got 9.3 - 9.4 potential as it sits.

Of course, I will likely not run it again until I have a cage in it.
 
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GroceryGetter83

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Sep 18, 2018
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Needs a sniff of Senior Giggle...
Rejected No Way GIF by ZombiUnicorn


Not until it has a 85 or 88mm turbo in it...
 
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64nailhead

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How did the intake temps look at 20psi.

20 psi - yeah buddy :notworthy:
 
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GroceryGetter83

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How did the intake temps look at 20psi.

20 psi - yeah buddy :notworthy:
Ambient temp was around 77*F.
Intake temp at start was 100*F.
Intake temp at end was 150*F.

Turbo is good for 28 psi, I believe :unsure:
 
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64nailhead

Goat Herder
Dec 1, 2014
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Ambient temp was around 77*F.
Intake temp at start was 100*F.
Intake temp at end was 150*F.

Turbo is good for 28 psi, I believe :unsure:
The intake temp and back pressure will let you know hw much more there is in it.

150 is excellent unless the curve looks like the north face of Mt Everest.
 
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GroceryGetter83

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The intake temp and back pressure will let you know hw much more there is in it.

150 is excellent unless the curve looks like the north face of Mt Everest.

I'll have to review the log but from memory it was very gradual increase.
 
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64nailhead

Goat Herder
Dec 1, 2014
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I'll have to review the log but from memory it was very gradual increase.
You know my experience. When you hit the backpressure limit, intercooler efficiency limit, or turbo limit the IAT's will skyrocket - and it occurs damn fast.

I take it from your post that you are going to put in the cage? I'm glad to hear that you are at least considering it. You're making some serious steam and sh*t can go wrong in a hurry.


I haven't asked yet, but how did the car drive at 140?
 
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GroceryGetter83

LS Mafia
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Sep 18, 2018
676
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Tampa, Florida
You know my experience. When you hit the backpressure limit, intercooler efficiency limit, or turbo limit the IAT's will skyrocket - and it occurs damn fast.

I take it from your post that you are going to put in the cage? I'm glad to hear that you are at least considering it. You're making some serious steam and sh*t can go wrong in a hurry.


I haven't asked yet, but how did the car drive at 140?
Yeah I watch all those things to make sure I don't hurt it.

Hopefully end of summer/fall time frame, getting an 8.50 cage/parachaute mount put in it. Guess I'm going all out now LOL.

Car felt absolutely amazing at 140 mph. Dead straight, level, no drama. New twin-piston Blazer front brakes did a great job slowing me down.
 
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Texas82GP

Just-a-worm
Apr 3, 2015
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1BAD4DR
 
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