Question over turbo

neverbeencaught · 03-29-2008, 07:32 PM

Hey I'm looking at a non-turbo supra, and yes I do want to turbo it. I've done my research, but my question is, why do we HAVE to have the 7m-gte engine? I mean i know it's got the piston oil squirters and the oil inlets and outlets, but why do we need to have it? My last car was totaled when my friend t-boned me, but it was an ford escort zx2 that I turboed. I know that they don't have oil squirters in the pistons, and that they don't have the inlets and outlets so what's the difference? If I wanted could I basicly put the turbo and piping on, run my lines, get a custom chip burned and tunned, then it should be ok right? or is there something I'm missing?

Benesesso · 03-29-2008, 10:56 PM

*IF* you didn't use the turbo much, and kept the boost low, you *might* get away with it. But Toyota figured that in "normal" use, the pistons would get too hot w/o the extra oil, etc. Then you have to figure out how to oil the turbo itself, and your NA compression ratio is really too high.

Look up the yield strength of alum. alloys and notice how fast it drops vs temp. Around 350-400 deg. F it's HALF of what it is at room temp.

Why destroy a good NA engine? Sell your car and buy a REAL turbo car.

neverbeencaught · 03-29-2008, 11:45 PM

well I would but I can't get one cheap enough and close enough. I've only got 2500 to spend, and with that I can get a n/a and I already have the turbo pipes intercooler and lines. The turbo oil lines are nothing for me to do, my old escort didn't have a place for them so we made them. it's not hard, you just find a place already on the block that will allow you to tap into the oil supply, then you make an oil return on the oil pan and alow for gravity to drain it.

mkiiisupra · 03-30-2008, 12:52 AM

MKIII Supra NA->Turbo Conversion Notes

03-29-2008, 07:32 PM	#1
neverbeencaught Stock Join Date: Dec 2007 Location: Tennessee Posts: 18	Question over turbo Hey I'm looking at a non-turbo supra, and yes I do want to turbo it. I've done my research, but my question is, why do we HAVE to have the 7m-gte engine? I mean i know it's got the piston oil squirters and the oil inlets and outlets, but why do we need to have it? My last car was totaled when my friend t-boned me, but it was an ford escort zx2 that I turboed. I know that they don't have oil squirters in the pistons, and that they don't have the inlets and outlets so what's the difference? If I wanted could I basicly put the turbo and piping on, run my lines, get a custom chip burned and tunned, then it should be ok right? or is there something I'm missing?

03-29-2008, 10:56 PM	#2
Benesesso 3" Exhaust Join Date: Nov 2005 Location: Phoenix, AZ Posts: 145	IF you didn't use the turbo much, and kept the boost low, you might get away with it. But Toyota figured that in "normal" use, the pistons would get too hot w/o the extra oil, etc. Then you have to figure out how to oil the turbo itself, and your NA compression ratio is really too high. Look up the yield strength of alum. alloys and notice how fast it drops vs temp. Around 350-400 deg. F it's HALF of what it is at room temp. Why destroy a good NA engine? Sell your car and buy a REAL turbo car. __________________ "You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein 1988 and 1990 Turbo Supras

03-30-2008, 12:52 AM	#4
mkiiisupra Lexus & 550's Join Date: Sep 2007 Location: Las Vegas, NV Posts: 570 Blog Entries: 1	MKIII Supra NA->Turbo Conversion Notes __________________ 1990 Toyota Supra Turbo A/T ------------------------------------------------ Questions about oil? take a look http://www.supramania.com/aehaas/

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03-29-2008, 11:45 PM	#3
neverbeencaught Stock Join Date: Dec 2007 Location: Tennessee Posts: 18	well I would but I can't get one cheap enough and close enough. I've only got 2500 to spend, and with that I can get a n/a and I already have the turbo pipes intercooler and lines. The turbo oil lines are nothing for me to do, my old escort didn't have a place for them so we made them. it's not hard, you just find a place already on the block that will allow you to tap into the oil supply, then you make an oil return on the oil pan and alow for gravity to drain it.