Please help Auto vs Manuel

[liftback2d]

This is my first post and I was wondering if someone could help me. I am looking at buying a 1992 mkIII Supra Turbo. It is very clean but it is an automatic. Has anyone performed a conversion from an auto to a 5spd. I know there are two types of manuels used for the mkIII depending if its a 7M-gte or a 7M-ge, but I'm not sure how much of a process it would be to swap it out. Also is there any pros to haveing an auto vs a manuel (not like being able to eat and talk on your cell phone and drive) but performance related. Someone was telling me the auto's can hold their boost through shifts. (Btw is the auto a 4 or 5 spd). If you have any info please help. Thanks

[liftback2d]

I just realized i spelled Manual wrong 3 times

[projectsupramk3]

Reading is fundimental, These are from this forum alone. No biggie on the manual though. lol
http://www.automotiveforums.com/vbul...d.php?t=174266
http://www.automotiveforums.com/vbul...d.php?t=172178
http://www.automotiveforums.com/vbul...d.php?t=160152

[liftback2d]

what about any pros to having an auto... what kind of performance differences am i going to notice. Also do you know if it is a 4 or 5 speed.

[projectsupramk3]

4 speed, not many differances between the two besides the fact that auto's are for women, girly men, or drag cars running single digit times. The auto can hold some power, not near as much as the R-154 but it'll be plenty good for most people.

[liftback2d]

would you recommend waiting for a 5spd. It seems hard to find a late 3 gen. turbo in good condition in a 5spd. By the way i would not be doing the sway myself. I really appreciate your help

[liftback2d]

*swap*

[projectsupramk3]

I'd definetly buy it if the price is right, 92's are hard to get ahold of. You can always swap out the trans no problem, everything is bolt in. If you had to pay someone to do the swap then that changes it alittle, most shops will charge a pretty penny even for such an easy thing. I think you should try and tackle the swap, it's not at all complicated once you get everything you need lined up.

[liftback2d]

I''m a little confused on how to do the swap, do you know of any websites that explain it in detail.

[projectsupramk3]

Like I've said in the other posts, the best way to learn something like this is if you start wrenching on it, a walkthrough can help some if you get stuck but you don't need it. Everything is completely bolt-in, take something off, you put something in its place. I'm sure if you follow the link to supraforums there will be one there, if not just search SF real quick and it shouldn't be hard to find, I'll try and find you one.

[liftback2d]

Thanks I really appreciate it.

[liftback2d]

I am blue booking the supra to make an offer. The supra has a "new" 7M-GTE engine. Would this increase/ decrease or not effect the value of the car. Also when I am factoring in the miles on the car, does it matter if the miles are on the car or the engine only (for blue booking purposes)? Thanks for the help!

[projectsupramk3]

Honestly, everything is worth exactly what your willing to pay for it, but KBB is usually a good example of market value on most cars. He's probably going to want more money because he had to buy a new engine for it so figure he paid about $1K, plus it's a 92 meaning it's rare so up the price alittle more. Don't pay some outragious price just because it's a 92, but don't except to get it for near the same price as a 87-88. I just checked KBB and it looks about right for what I would think it's worth, between $4-6K depending on the condition of it. Compare this to being able to find any earlier year turbo for $2-3K and it's really only the type of buy for a MKIII lover/enthusiast, unless you can jew him down that is.

[liftback2d]

Ok, the supra im looking at is burning a little rich. The mechanic said it could be a few things> either the mass air flow sensor on the intake itself, the Throttle positioning sensor, or one or both the O2 sensors. When I drive the car I feel a slight jerking motion in the higher rpm's, also it idles slightly rough. Have you ever heard heard of a problem like this with this year or engine. The engine is an attarco engine. It passed smog (in california) below the averages. Except it burns a little rich, do to the air flow reading problem. Any info would help

[projectsupramk3]

It could be the AFM, pull the codes to find out, if it's electrical it will show up there. If it's idling rough also then most likely it's not the O2 sensor, the sensor doesn't do squat when the car is idling and running WOT (wide open throttle). Most likely the usual tune up stuff that most people forget to do when they sell the car, plugs, wires, fuel filter, air filter, that stuff. What is an attarco engine by the way, some engine dealing/rebuilding company I assume? Also the MKIII runs pig rich naturally, probably not as rich as you describe but definetly more than most.