question about turboing a N/A supra

mad_dicer · 10-03-2006, 08:55 PM

i have a 1986.5 supra that is non turbo with a 5 speed manual tranny.
im interested in going turbo. now can i convert the non turbo to turbo by buying exhaust and turbo kits or do i need to do internals to? also can i still use same comp or do i need a new one?

Murd · 10-03-2006, 09:04 PM

You need to comp, you'll probably want to do internals too, as the N/A is 9.2/1 compression ratio, and the turbo's are 8.x/1 can't remember as I don't own a turbo, but it's low 8's. Another difference is the turbo block has piston oil squirters and a few other differences. The head is different, intake is slightly different, transmission manual is a W58 on a N/A, and it's a R154 on a turbo, along with all the extra's that go with it.

mkthreetillinfinity · 10-05-2006, 10:14 AM

i am actually converting my 87 NA to a turbo. the best thing to do is buy a JDM 7m-gte. that is the cheapest,fastest and easiest way. but youre gona need all these stuffs: ecu, air flow meter, intercooler kit, oil cooler, down pipe, accordian hose and harness. the differential, driveshaft and tranny is optional. i suggest that you get a tranny for 7m-gte because you will mess up your NA tranny if you upgrade your turbo. the turbo tranny is called R-154 i believe.

mkthreetillinfinity · 10-05-2006, 10:16 AM

dont drop a turbo kit in your 7m-ge by the way. thats more work right there and the NA motor might blow up in a little bit.

tone loc · 10-05-2006, 05:45 PM

yeah you are better off doing a engine swap

Supra2NR · 10-06-2006, 07:52 AM

i tend to shy away from jdm engines
its not that they are not good
its jus so damn hard to get them run legally
idk how hard it is to pass emisions in ur state
but it might be cheap to get the jdm engine,
but its all the small misc, and knick-knacks that makes the swap cost more than what actually does
i'll rather find a usdm 7mgte then use that

mad_dicer · 10-06-2006, 10:00 AM

i live in SC we dont have inspections down here

is there any other problems with a JDM motor besides emmision/inspection issues? does something or items have to be replaced before it will work in a US car?

10-03-2006, 08:55 PM	#1
mad_dicer 3" Exhaust Join Date: Oct 2006 Location: sc Posts: 84	question about turboing a N/A supra i have a 1986.5 supra that is non turbo with a 5 speed manual tranny. im interested in going turbo. now can i convert the non turbo to turbo by buying exhaust and turbo kits or do i need to do internals to? also can i still use same comp or do i need a new one?

10-03-2006, 09:04 PM	#2
Murd 3" Exhaust Join Date: Jul 2006 Location: Vancouver, WA. Posts: 233	You need to comp, you'll probably want to do internals too, as the N/A is 9.2/1 compression ratio, and the turbo's are 8.x/1 can't remember as I don't own a turbo, but it's low 8's. Another difference is the turbo block has piston oil squirters and a few other differences. The head is different, intake is slightly different, transmission manual is a W58 on a N/A, and it's a R154 on a turbo, along with all the extra's that go with it. __________________ 1989 N/A Targa 5spd. Metallic Grey, w/grey interior. No mods done.

10-05-2006, 10:14 AM	#3
mkthreetillinfinity Stock Join Date: Jul 2006 Location: Orange County Posts: 27	NA-turbo conversion i am actually converting my 87 NA to a turbo. the best thing to do is buy a JDM 7m-gte. that is the cheapest,fastest and easiest way. but youre gona need all these stuffs: ecu, air flow meter, intercooler kit, oil cooler, down pipe, accordian hose and harness. the differential, driveshaft and tranny is optional. i suggest that you get a tranny for 7m-gte because you will mess up your NA tranny if you upgrade your turbo. the turbo tranny is called R-154 i believe.

10-05-2006, 10:16 AM	#4
mkthreetillinfinity Stock Join Date: Jul 2006 Location: Orange County Posts: 27	turbo kit dont drop a turbo kit in your 7m-ge by the way. thats more work right there and the NA motor might blow up in a little bit.

10-06-2006, 07:52 AM	#6
Supra2NR 1000whp postwhore Join Date: Apr 2006 Location: Chi-Town Posts: 1,643	i tend to shy away from jdm engines its not that they are not good its jus so damn hard to get them run legally idk how hard it is to pass emisions in ur state but it might be cheap to get the jdm engine, but its all the small misc, and knick-knacks that makes the swap cost more than what actually does i'll rather find a usdm 7mgte then use that __________________ http://www.myspace.com/supra_2nr Into Bikes now,, apparently the supra couldnt kill me, so my zx6 might lol

10-05-2006, 05:45 PM	#5
tone loc 20psi boost Join Date: Jun 2006 Location: Chicago Posts: 706	yeah you are better off doing a engine swap

10-06-2006, 10:00 AM	#7
mad_dicer 3" Exhaust Join Date: Oct 2006 Location: sc Posts: 84	i live in SC we dont have inspections down here is there any other problems with a JDM motor besides emmision/inspection issues? does something or items have to be replaced before it will work in a US car?

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