rear mount turbos, anyone got one?

[coldsho]

ive doen soem reading and seen lots of videos and press releases on rear mount turbos, just wondering if anyone has one. it seems a great idea for SHO's due to our limited engine space. im really looking into getting one, but i thought id ask b4 venturing.

 

[SHO92]

1slickred89 has the closest rear mount out of anyone. His turbo is mounted just behind the firewall line, under the center console.

 

[1slickRED89]

those people who sell rear mount kits are pretty friendly on the phone...even if they won't sell the oil pump separately to me like I wanted them to.

I'm very confident that we will not see anything similar to the car in question reproduced. don't use it as a model unless you seek pain. these guys with the basement bargain setups are the way to go, slap it together and have fun instead of getting all the fine details right, loose engineering and all of that.

 

[RJ-92]

If you are refering to an STS turbo with the muffler area mount, they are crap. I know of two, both motors blew up and olny gained like half a seccond inthe 1/4 mile. They make great peak #'s but the area under the curve sux. They simply aren't efficient.

 

[laxmax327]

yea i dont have experience w/ them. but what rj92 said makes perfectly logical sense. the turbo being sooo far back, where exhaust pressure is at its least. so eventually yes, the turbo would spool up and you could put up some very respectible dyno numbers. but in the real world, you would really never see half that power.

 

[Mike Kopstain]

W Body vendor 1 sells a complete bolt on turbo kit that will put your car in the 11's, 10's with some good mods. Kit utilizes front mount intercooler and underhood turbo.

W Body vendor 2 sells a complete bolt on STS turbo kit that had to be reved for ~30 seconds at the lights before the turbo would spool and then barely ripped out a 13.20 with a professional driver...

All other things equal, a standard mount turbo will always outperform a rear mount. FWIW, the rear mount turbo test car lost it's motor after the oil line experienced a failure.

 

[Mac]

Mike, Is that a turbo kit for the SHO? Vender 1

 

[somedude_001]

haha no its for the GTP i believe, yes turbo kit for the GTP

 

[Mac]

....ok, i was wondering why I hadn't seen that before

 

[1slickRED89]

I just said they where nice on the phone. I don't even like their product.

I have also read that their kit for the pt-cruiser gained just a bit less than nothing, pretty sad. but they are still in business so somebody must like them.

the rear mount turbo test car lost it's motor after the oil line experienced a failure.

I suspect that's how the turbo ATX will die, that or catastrophic tranny failure that causes a crash.

 

[somedude_001]

thats how i hope my tranny goes out catastrophic failure or bust, i know its only going to be a metter of time

 

[coldsho]

cross that idea out. i figured it was too good to be true. im just trying to figure out my future plans for the car. after i get the essentials done. brakes suspension gutting, cooling . theyre all done but i want the best,so im upgrading again. i have no problem making my sho my money pit again. i know im gonna be spraying 6port deff 12port maybe.after i swap the 5spd in of course. turbos may be too much work for me right now. i might end up supercharging it instead. its a road race car. which would u all suggest?

 

[Sh03d]

It's your car, so consider your funds and figure out what you want to do.
Spaying will be the cheapest. If you end up doing the 6 port talk to Doug Lewis at FPS. He has a set up he is trying to sell.

 

[SHOSIG]

http://khturbo.net/rmtz24/RMTZ24.html

This person seems to have a nice remote set up.

 

[Super Matty P]

the second one is MUCH nicer than the first he did. I would think a remote turbo system on an SHO would be much easier to create but not nearly as effective as some other options.

If it were me making one I''d mount the turbo as close and high as I could and just create a 90* dump pipe for the exit. Also to minimize loss I'd use a smaller charge piping diameter to keep pressure high.

I would think if you were able to run a true dual exhaust you could just as easily run one exhaust pipe and one charge pipe.

 

[SHOSIG]

If it were me, doing a remote mount: I'd run a T3/T4 turbo (for the lag issue), and then use 2.25 intake charge pipe. For the supply line.....steel brake line. That would be my way of doing it, if I ever would build one. Until someone does one, we'll never know if it works or not.

 

[Baddflash]

I would also setup up it's own oiling system rather than stealing pressure from the engine. I probably wouldn't run a cat before the turbo either.

However, 12.59 @ 114 from a 3.4L cavi is a very respectable time, one which a lot of traditional style turbo setups struggle to compete with. Even the 14.1 @99 shows a good gain of 3 seconds or so over stock.

To me it has proven to be a viable setup, but it also makes one think of all the places a turbo could be remote mounted, who says it has to be at the very back???
I think I'm gonna go crawl around under my car right now, cause I smell a turbo swap brewing.

 

[UnderPSI]

Rear mounts are'nt the best, however set up properly they work very well.

 

[SHOSIG]

Here's a nice setup on a T-bird:

http://www.turbothunderbird.com/pics.php