auto tranny with a turbo?

[central09]

this guys trying to sell me a 99 prelude auto/sportshift but the trannys completely rebuilt he said it could handle 500hp should i take a stab at and turbo it or stick with a 5spd. and what are the pros and cons to both and also is turbo xs a good kit?

[R8GYY]

damn..thats not stab in the dark..thats murderous intent..them trannys cant even handle the 200bhp standard output how is it gonna handle 500hp?

its upto you but i wouldnt touch an auto tranny with a barge pole never mind a turbo.

[Oceanborn]

damn..thats not stab in the dark..thats murderous intent..them trannys cant even handle the 200bhp standard output how is it gonna handle 500hp?

its upto you but i wouldnt touch an auto tranny with a barge pole never mind a turbo.

I'm with you there... even if I drive an auto :P If your looking to add any hp stick with a stick :)

[prelude24]

yea i have never even heard of a turbo auto

[BadMofo]

Yeah, I don't know man. Even if you do it, it's gonna be hard to tune. If you are turbo'ing your car... you NEED to tune it. Not just for performance, but so it doesn't blow up on you. To tune it, you need to go to a chipped OBD-1 ECU. You should ask someone else who is more knowledgable, but I don't know how many OBD-1 ECU's there are out there that are gonna support the autotranny and our vtec.

[Myles88]

You seem to have a lot of posts on this subject of the auto. If you have any doubts and dont have much mechanical/ecu experience, i wouldnt even bother with the car. There could be layers upon layers of things you would have to do just to even put a turbo on the car. The SS auto tranny wont even run on the obd1 ecu because there is no base programming for it on them.

[Brash22]

the trannys completely rebuilt

Most of them are. While there has been no recall, there are a large amount of the SS autos that have been rebuilt by the factory because they have failed. Some twice or three times.

Long story short there are some power-up kits available for the SS auto in the Prelude but nobody I can find has any experience with them. Well, I read about one on PO.com but nobody had anything nice to say about it. If I was motivated I'd look it up but right now I cbf.

You're better off going with a 5-spd conversion. Not only will it be more fun to drive but you'll get more power to the tyres without the inherant converter lag seen on all but the most hard edged auto boxes.

[central09]

thanks alot its helped jeeze i have just heard differant but i believe u

[stealth47]

myns 5speed, i wanna throw a turbo in but i need ta do a front end build first so i dont blow shyt

[HondaNeedsBoost]

im sure Neck will give u all the info u need :smile:

[CHILLZ_VTEC]

wow...never knew...does this apply for superchargers as well??? the fact that the tranny cant handle an increase of what 80whp at minimum sucks...i have a 2000 base sportshift tranny, i had to rebuild it at 77k, one year after i bought it...i planned to buy the jr supercharger or turbonetics turbo stage2, is this considered a no no??? LOL...

[bboi_xtc]

yea i have never even heard of a turbo auto

then you haven't been to a strip.

lots of people that drag have autos, supra's, etc. perfect shifts.

[yogi_pahl]

yes you CAN have a turbo and a auto BUT you have to tune it and that takes more money and time so unless ur really want to id stick with the stick

[distant]

damn..thats not stab in the dark..thats murderous intent..them trannys cant even handle the 200bhp standard output how is it gonna handle 500hp?

its upto you but i wouldnt touch an auto tranny with a barge pole never mind a turbo.

What??? can't even handle 200 hp? i'm pushing 240.. 300 with the juice.. i've got an autostick.. going strong at 70k.. if she dies i'm going to swap to a 5spd.

and seriously.. never heard of an auto with turbo? look around when you are driving the streets. my bro drives an A4 audi 1.8T T stands for turbo.. but its an auto.. i've seen this badge on many cars vw's audi's i think i've even seen it out a sabb..

that aside.. i agree with most of you. if you plan on a turbo or supercharger I would recommend a 5 spd.. and an engine build.. but you can probably get away with a small amount of boost like 7-8 psi on stock internals.. but anything more you need to build.

[94ludeguy]

one of the greatest auto turbo cars are grand nationals it is so possible if u have a good tranny and thats it.

[CHILLZ_VTEC]

well, yeah thats what im saying....i just got mine rebuilt at 77k and im at 93k now, so i believe that if i decided to put a jr supercharger, or even a turbonectics turbo stage2 on my car that it can handle it....the s/c only gives off 7-9 psi i think, and the turbo i believe can go from 7-10 psi(not sure)....so i would think with the maximum of 240whp with the s/c or 270whp with the turbo(properly tuned), the tranny would definately be able to handle either setup....

[94ludeguy]

buttt our ludes tranny are no where built as strong as in trannys such as a grand national

[CHILLZ_VTEC]

yeah, but like ^^^distant, he is pushing 300whp total with turbo and nitrous....you can have a turbo or s/c on an auto lude, their should be no question about it....but the tranny may not have a long life span their after....distant, how long have you had your turbo on your lude, in terms of miles??? and when your tranny goes out, hopefully not anytime soon, im sure you will let us know and we can estimate the time frame from their...lol

[twokexlv6coupe]

What??? can't even handle 200 hp? i'm pushing 240.. 300 with the juice.. i've got an autostick.. going strong at 70k.. if she dies i'm going to swap to a 5spd.

.


Got any dyno graphs?

I'm not doubting you, just a lil sceptical that your pushing 240 with a lil more than boltons.

[distant]

^^i'll look for the dyno chart in my stack of paperwork.. if i can't find it i'm going to seattle in a month or so to get some work done and i'll have one for sure then. no i don't have a turbo.. just some quality parts and a decent tune

[94ludeguy]

and what parts might that be. enlighten us please

[BadMofo]

I'd like to note that the main reason that a turbo doesn't work (well) with an automatic Prelude is the whole ECU issue. Good luck finding an ECU that supports vtec, an automatic transmission, dual runners, is OBD-I, and isn't buggy when you chip it and tune it... It's hard enough finding an OBD-I ecu with all of those qualities for a 5 speed let alone an automatic tranny. So... that leaves your tuning options to some very expensive controllers, and stand-alone engine management... because let's face it... you can't tune for a turbo with just a v-afc...

It can definitely be done... just very expensive to do the right way and tune correctly...

Also, I'd like to note that all of those cars you mentioned earlier (1.8t audi's, supras, vw's, grand nationals, etc...), were built like that from the factory.. and therefore were tuned for them from the factory... something that our preludes were not ever meant for.

[yogi_pahl]

well since the uto is in the car u would have to spend more money geting a 5speed and all that just to convert it then turbo or sc the car...so unless u r going to use the lude to race and race only i say just get a JRSC

[CHILLZ_VTEC]

^^^so true...auto ludes can not use anything like hondata...the most a auto lude can take with the oem ecu is about 270whp for sure, from what a tech. told me at his shop...and thats being safe, he said it would be possible to take it up to 275-280 but thats pushing it, and its dangerous to take it to 300whp or more....so to just have a lil more power at 270-280whp would be good for me...

[CHILLZ_VTEC]

well 6-9 psi on a s/c or a turbo are still safe on the auto ludes...you dont have to get the jrsc...the jrsc will give 6-8 psi and about 240whp, and the turbo can give off 7-9 psi with about 240-270whp...with each properly tuned of course...and vafc is good enough for these mods...

[distant]

and what parts might that be. enlighten us please

http://www.preludezone.com/showthread.php?t=7403:thumb:

[mcimo]

This is definately a little OT but since were on the subject, and since I can't seem to find a good one myself, no matter how much I search, does anyone know of any good articles on converting a prelude from auto to manual? Because eventually I'm gonna drop in a new engine, and when I do I'm gonna convert it to manual. It won't be for a while, but I want to start reading up on it, so when I do it I'll be ready. Thanks guys.

[BadMofo]

I don't usually like to link people to other lude websites... but this is a pretty comprehensive discussion on the 5 speed swap.

Here (http://www.preludepower.com/forums/showthread.php?t=280367)

Also... here is a little more info on the actual procedure itself (http://www.mazmo.com/zameoj/swap.htm)...

[twokexlv6coupe]

well 6-9 psi on a s/c or a turbo are still safe on the auto ludes...you dont have to get the jrsc...the jrsc will give 6-8 psi and about 240whp, and the turbo can give off 7-9 psi with about 240-270whp...with each properly tuned of course...and vafc is good enough for these mods...


:rolleyes:

[94ludeguy]

http://www.preludezone.com/showthread.php?t=7403:thumb:

ahhh very nice