90 grand prix turbo

[roworld]

I have a chance to buy a 90 turbo grand prix for $900. It needs a engine the bottom end in knocking and the abs dont work. I cant find a engine for this car anywhere online. Can anyone help, is it worth the hassle. I was told the abs unit will be over $1000 alone. Any info will be great.

[mickaz]

well i think any 3.1 will fit on it. it's a RARE car so go for ti if you want to have something you won't see to often on the street.

[1988GTU]

The long block itself are pretty much the same. Compression ratio = same, heads are the same, only thing different are the manifolds, some brackets, some sensors. All in which will swap right on over with very little to no modification.

3.1's are dime a dozen and around here, 150-300 bux depending where you go and how clean/up kept you want it.

900 for a TGP? That is GREAT if it were rust free or very minimal rust and the trans is strong. The abs/module can get costly, but you can convert it over to traditional vacuum brakes with some modifications.

Where are you located?

[roworld]

Im in baltimore.

[Barry]

If you dont want it I am very interested. Is it stick or automatic?

[z284pwr]

The long block itself are pretty much the same. Compression ratio = same, heads are the same, only thing different are the manifolds, some brackets, some sensors. All in which will swap right on over with very little to no modification.

3.1's are dime a dozen and around here, 150-300 bux depending where you go and how clean/up kept you want it.

900 for a TGP? That is GREAT if it were rust free or very minimal rust and the trans is strong. The abs/module can get costly, but you can convert it over to traditional vacuum brakes with some modifications.

Where are you located?

If you want to get technical about it, it has a different crank and the compression ratio is different.

abs dont work

This is actually the concerning part with TGPs now. Some of the essential parts to rebuild the Master Cylinder are no longer produced so getting working parts is going to become a royal PITA. It'll almost be a swap to vacuum brakes requirement if one fails.

If you don't want it I am very interested. Is it stick or automatic?

Unless it's be modified pretty good, it's an automatic, they only came in automatics (4T60-HD)

[1988GTU]

If you want to get technical about it, it has a different crank and the compression ratio is different.

The long block itself are pretty much the same. Compression ratio = same, heads are the same, only thing different are the manifolds, some brackets, some sensors. All in which will swap right on over with very little to no modification.

What is the cr? Link?

Somethings Jeff M might have wrote or said I just cannot trust. When I looked up somethings through GM a while back, it all showed same internal design with exception of a certain couple years variants from the na to fi. Some na's had different heads at one point, but as the years went on and the 3.1 came out, they received the "turbo" heads design.

As much as I'd like to believe the TGP/STE-turbo edition had something special going on inside, it just didn't. That is probably one of the main reasons why they don't really have high rarity factor to them.

[Superdave]

What is the cr? Link?

Somethings Jeff M might have wrote or said I just cannot trust. When I looked up somethings through GM a while back, it all showed same internal design with exception of a certain couple years variants from the na to fi. Some na's had different heads at one point, but as the years went on and the 3.1 came out, they received the "turbo" heads design.

As much as I'd like to believe the TGP/STE-turbo edition had something special going on inside, it just didn't. That is probably one of the main reasons why they don't really have high rarity factor to them.

supposedly 8.8:1 VS the 8.9:1 of a N/A version. Nothing to split hairs over there..


I agree that the TGP engines are over-hyped, there are a few differences here and there but nothing drastic. People have swapped regular 3.1's in their place with all the stock turbo setup and had no problems.

I had a chance to buy a TGP engine once, i was going to gut it and post up the info.. never got around to going back to the junkyard though.

[1988GTU]

:-)

[Superdave]

weird, i have the vin T 3.1 at 8.9:1..

here is the page with all the hype.. http://www.turbograndprix.com/Extens...ifferences.htm

[1988GTU]

That's one of those sites where you WISH it was all like that, but it's not.

[z284pwr]

What is the cr? Link?

Somethings Jeff M might have wrote or said I just cannot trust. When I looked up somethings through GM a while back, it all showed same internal design with exception of a certain couple years variants from the na to fi. Some na's had different heads at one point, but as the years went on and the 3.1 came out, they received the "turbo" heads design.

As much as I'd like to believe the TGP/STE-turbo edition had something special going on inside, it just didn't. That is probably one of the main reasons why they don't really have high rarity factor to them.

Yeah, I can understand that, he has claimed out of a 450HP TGP for years and years, yet magically no one has ever seen pictures, fishy....

I have heard of the different heads design claim as well. It was in '90 I believe they were different?

supposedly 8.8:1 VS the 8.9:1 of a N/A version. Nothing to split hairs over there..

I agree that the TGP engines are over-hyped, there are a few differences here and there but nothing drastic. People have swapped regular 3.1's in their place with all the stock turbo setup and had no problems.

I had a chance to buy a TGP engine once, i was going to gut it and post up the info.. never got around to going back to the junkyard though.

Yeah, it was a bit over-hyped, our TGP had a junkyard 3.1 in it when we bought it, it obviously ran fine and still pulled pretty good MPG stock with a leaking crossover. With the small ass stock Turbo, stock 3.1s don't seem to have any issues with it.

[mfewtrail]

I thought the owner of that TGP in Baltimore said that it was just smoking. It's knocking now?

Anyways, as far as differences vs. the Vin T vs. Vin V(turbo) 3.1 goes. The heads on the turbo engine have slightly larger combustion chambers resulting in the minimal compression difference. Jud aka Sleeperred90tgp(RIP) proved this years ago by cc'ing the combustion chambers. Before there, people believed the deck height to be different between the two...which isn't the case. Other NA 3.1's of the same era received the same heads as the turbo cars as far as I know. The crankshafts have been compared and there are no notable differences, but there is claimed to be a different part # for the turbo vs. regular(maybe they'll stiff you a few more bucks for the "turbo" one, lol). There are other differences also...but they're all pretty minor in my opinion. As someone else said, plenty of people have turbocharged the NA engines without a single problem and made quite a bit of power.