Looking at a 1987 Toyota Supra Turbo - Page 2 - RC-Monster Forums

TexasSP · 02.10.2009, 05:17 PM

Also check out the www.suprastore.com for info and parts. Great cars, but you really need to understand what you are getting into. Chances are on the Supra, if it can be done, it has been done. Learn from others mistakes and experiences and by no means buy this thinking of a 2JZ conversion. It is way too cost prohibitive.

Takedown · 05:59 PM

Quote:

Originally Posted by lincpimp

That turbo will need an external waste gate. I wiould stick with the stock turbo for now, as the MAF needs to be upgraded before you can even reach the limits of the stock turbo. Join the Supra Owners Group and read all of their threads on the turbo mods. IIRC you can mod up a lexus MAF to work with the supra cheaply, and then just use a simple boost controller to up the bost to 14-15psi. No stock motor can handle 25psi, you would have to have a fully built bottom end, forged everything. I have a feeling that you will be suprised with the performance of the stock turbo supra, especially compared to a buick centry.

The century does haul with a 3.1l v6. It bounces way to much when I brake drop though since it fwd.

rc4x4nut · 02.10.2009, 08:55 PM

I absolutely love supras. Our family has had over 20 ranging from 84 (back when they were celica supras) to 98. I had a 94 tt in high school. They are great cars. Just like everyone else said the 7m motor is notorious head gasket failures. Once you address that issue they purr like a kitten.

BL_RV0 · 02.10.2009, 09:50 PM

Quote:

Originally Posted by Takedown

Thats what I was thinking. Or ben...

Although it seems like something i would do, it wasnt me.

kulangflow · 02.11.2009, 02:34 AM

Quote:

Originally Posted by rc4x4nut

I had a 94 tt in high school.

Ummmmm ... wow! I would never trust a high schooler with that much hp.

George16 · 02.11.2009, 05:14 AM

They are nice. I used to have a 92 with manual tranny which blew up the headgasket. Ask the seller if the HG had been replaced. If not, forget about it. If you can find a 94-98, get them. They are way better.

By the way, I was surprised to find out that the JDM supras(87-92) use 2 small turbos instead of a single big one like what's was sold for the US market. I bought a 92 here in Japan back in 2006 for $800(sailor was leaving for his next duty station) but had to sell it for a bigger car when my daughter was born in 2007. It can hang on with the Skylines (GTR only) and beat the crap of the Skyline GT-S.

Takedown · 02.11.2009, 01:55 PM

Quote:

Originally Posted by kulangflow

Ummmmm ... wow! I would never trust a high schooler with that much hp.

I sure hope this is a step up from my century.

I am sending the guy half the cash this weekend so he can hold it for me. I will be paying him the rest asap. I also told him to take out the stock turbo. He dropped the price $100 so its at exactly $2000 now. Im going to buy another 8-10lb turbo with wastegate, blow out valve, all the connections, new digital boost gauge, and all the hookups. Ill let you guys know how it goes. Oh and the car comes with some older worn tires. Im going get a video burning out and drifting in a parking lot to get rid of the old tires.

Is their any way possible to fix the blown header/gasket issue? If so how cheap will the fix be?

TexasSP · 02:04 PM

Replace it is the only option. Their are many options of what to replace it with from stock items after market parts. I would recommend looking into a head gasket meant to handle the boost you are wanting to push. Again www.suprastore.com will be a help.

Here is a nice selection of replacements.

http://www.suprastore.com/19tosumk3hea.html

Probably a good time to replace the timing belt as well while the head is off. Also remember that if you are going to upgrade the turbo you need to start looking into bigger fuel injectors and a higher capacity fuel pump. Possibly even a better oil pump and so forth. This can get expensive quick. Think RC times 100!!!

Takedown · 02.11.2009, 02:02 PM

Oh my god that stuff is expensive.

lincpimp · 02.11.2009, 02:10 PM

If you do the research (which you won't) you will find the MAF will not handle much more airflow than it does stock.. All the boost in the world will not matter if you run it lean due to imroper fuel/air delivery. Keep the stock turbo for now, and do the other upgrades. SOGI (supra owners group international) is a good place for the DIY fixes and mods. A bigger turbo with more boost will require the fuel system to be upgraded... Plus you can get more boost from the stock turbo with a boost controller.

Don't listen to me though, I have certainly not owned 3 rx7s, 2 3000gt vr4s 1 stealt r/t, 1 lotus espri, and a handful of other turbo cars...

Takedown · 02.11.2009, 02:11 PM

Thats why Im only doing a 8-10lb turbo like you stated I should do... Because the stock gaskets/header wont be able to handle anything more in stock form.

lincpimp · 02.11.2009, 02:12 PM

Quote:

Originally Posted by Takedown

Thats why Im only doing a 8-10lb turbo like you stated I should do... Because the stock gaskets/header wont be able to handle anything more in stock form.

The stock head gasket cannot handle the stock turbo and stock boost. Start reading Jr...

Takedown · 02.11.2009, 02:14 PM

Right...

I will be upgrading the head gasket no matter what so hopefully it will work.

lincpimp · 02.11.2009, 02:15 PM

Quote:

Originally Posted by Takedown

Right...

I will be upgrading the head gasket no matter what so hopefully it will work.

They also mention swapping the stock head bolts to arp studs and torqing the nuts to 72ft/lbs, IIRC. All the info is on SOGI...

Takedown · 02.11.2009, 02:16 PM

Quote:

Originally Posted by lincpimp

They also mention swapping the stock head bolts to arp studs and torqing the nuts to 72ft/lbs, IIRC. All the info is on SOGI...

Alright Ill be sure to take a look at that site once I get home. This turbo thing is new to me so.