1990 supra turbo problem.

Rob1 · 04-12-2010, 01:12 AM

Ok i have a 1990 supra turbo targa top. im am putting the motor from an 87 supra automatic turbo into it. decided to replace head gasket with metal one and bring head torque up to proper specs before putting this one in to try to avoid the infamous blown head gasket. so the head is off my motor and i have a few questions. first, the top of my pistons are two dif colors, outside lip is black with deposites. typical. but the dip in the center is a clean white color? any ideas what that could be from? FYI i have never heard this motor run, bought it from a guy who said it was good but i wanted to know what i had in it. ok second question. the coolent passeges on top of block and bottom of head are both coated with a white residue. any idea why? and last, when i removed turbo, i had to remove the oil passege between turbo and block, i unbolted the tube from the block and i have got no clue what the name for the gasket that goes between them is. and another question. every auto parts plce i talk to does not have proper intake manifold gaskets. they are all for non turbo model. the lower two are the same for turbo and non, but upper one that bolts to 3000 pipe is a single circle on turbo, but all the sets they have are the non turbo style cuz the upper gasket has the two holes where the pipe between throttle body and intake mani makes a Y shape. where can i get correct gasket?

cre · 04-12-2010, 02:00 AM

The white material is most likely HG "fix" additive.

Get the gasket from Toyota... I don't think you'll find it separate from a full gasket set any other way.

Rob1 · 04-12-2010, 03:31 AM

Quote:

Originally Posted by cre

The white material is most likely HG "fix" additive.

Get the gasket from Toyota... I don't think you'll find it separate from a full gasket set any other way.

Well i am not opposed to getting a full gasket set but there are so many lol where would you recommend getting it from and what exactly would the set be called

btwilson86 · 04-12-2010, 04:30 AM

The gasket that I think you're looking for is the throttle body base gasket. IIRC, on the turbo models that's what bolts up to the upper intake plenum.

From what I can find online it looks like that gasket is Toyota Part 22271-42040

cre · 04-12-2010, 04:53 AM

For 95% of the gaskets any make will do just fine. The kit from this eBay seller is rather popular though and inexpensive: http://cgi.ebay.com/ebaymotors/86-93...Q5fAccessories

I wouldn't trust the included HG much, but I've read it's built like Toyota's.

Rob1 · 04-12-2010, 01:34 PM

Quote:

Originally Posted by cre

For 95% of the gaskets any make will do just fine. The kit from this eBay seller is rather popular though and inexpensive: http://cgi.ebay.com/ebaymotors/86-93...Q5fAccessories

I wouldn't trust the included HG much, but I've read it's built like Toyota's.

Thank you very much. i will for sure be ordering that friday when i get paid. thanks again.

04-12-2010, 01:12 AM	#1
Rob1 3" Exhaust Join Date: Aug 2009 Location: tennessee Posts: 137	1990 supra turbo problem. Ok i have a 1990 supra turbo targa top. im am putting the motor from an 87 supra automatic turbo into it. decided to replace head gasket with metal one and bring head torque up to proper specs before putting this one in to try to avoid the infamous blown head gasket. so the head is off my motor and i have a few questions. first, the top of my pistons are two dif colors, outside lip is black with deposites. typical. but the dip in the center is a clean white color? any ideas what that could be from? FYI i have never heard this motor run, bought it from a guy who said it was good but i wanted to know what i had in it. ok second question. the coolent passeges on top of block and bottom of head are both coated with a white residue. any idea why? and last, when i removed turbo, i had to remove the oil passege between turbo and block, i unbolted the tube from the block and i have got no clue what the name for the gasket that goes between them is. and another question. every auto parts plce i talk to does not have proper intake manifold gaskets. they are all for non turbo model. the lower two are the same for turbo and non, but upper one that bolts to 3000 pipe is a single circle on turbo, but all the sets they have are the non turbo style cuz the upper gasket has the two holes where the pipe between throttle body and intake mani makes a Y shape. where can i get correct gasket? __________________ My work in progress!!! 1989 toyota supra turbo targa top 7mgte, Five speed left hand drive.

04-12-2010, 02:00 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The white material is most likely HG "fix" additive. Get the gasket from Toyota... I don't think you'll find it separate from a full gasket set any other way. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

04-12-2010, 04:30 AM	#4
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	The gasket that I think you're looking for is the throttle body base gasket. IIRC, on the turbo models that's what bolts up to the upper intake plenum. From what I can find online it looks like that gasket is Toyota Part 22271-42040 __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

04-12-2010, 04:53 AM	#5
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	For 95% of the gaskets any make will do just fine. The kit from this eBay seller is rather popular though and inexpensive: http://cgi.ebay.com/ebaymotors/86-93...Q5fAccessories I wouldn't trust the included HG much, but I've read it's built like Toyota's. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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