E30 with rearmount turbo

[Coyote_ar]

the only reason i see why someone would benefit from a rearmount turbo, is when the engine bay is too crowded for a regular setup to fit.

For example, there was a E60 M5, with twin rearmount turbos, that had over 800hp with really low boost. but lag wasnt an issue in this setup due to the high torque the V10 had at low revs. there was no room for the turbos on the engine bay anyway.

but for an E30 with an M20, i dont see why someone would mount the turbos on the back.

[miniblob]

I read that PPC issue when it came out (gets delivered to my door!!!!!) and it looks quality!!!!! Blinding idea!!!!!

I could see me playing about with that idea (on a different car though - not me E30!!!!!!!!)

Hmmm, i know where there's a T3 lying about!!!!!

[327ire]

http://www.e30owners.com/forums/showthr ... #post36563

Iv been setting up a rear mount turbo for a couple of weeks now. About 700£ spent so far
1. Turbo +
2. Intercooler +
3. oil cooler 300
4. Pipes 200
5. heat resistance 70
6. injectors 160
7. Boost control
/ guage 70 €800
8. oil pump 100 €900

[DRIFTBOY]

Good luck to you!

Could you please start a topic detailing your work, and with pics?

Pleeeaaaase!

I'm very interested to see how it turns out!

[rede30323i]

if its good enough for bmw to start doing then who are we to argue with them ther are a number of companys who sell kits similar to this project to heres a link to a vid

[Wiseman]

I guess all of you guys have turbo e30? and have spent stupid money on them? The way I see it, why spend 3000 - 5000 on more power when you can just sell your car and buy an e36 m3 evo for the same??? A proper n/a bmw?

OR

put a turbo at the rear of your e30 and improve power without wasting thousands that could be spent on YOUR LIFE

Read this months Practical Performance Car Mag and see for yourselves before knocking it. The GTI drives well after the turbo. Im just beginning a rear turbo setup so Ill let youz know how it goes. Maybe your right, maybe your not

because i have owned an e36 m3 and it was crap.....
why shouldnt people spend there money how they like?

WHAT? OMG you've taken that 2 far pal
the only thing that was crap about your m3 was probably the driver, "i owned an m3 and it was crap" get tae yer bed, noob

[Jonsku]

Well, what's the situation of this project? Already up and running?

[Chuntington101]

Rear mount turbos are NOT the most efficent or effective way to turbo a car, but they do work! they are very popular in the US on cars like the vette and other applications.

as said before they are not THE BEST way to do it but they ahve their advantages. here are some:

Easier to install
Often cost less - Decent tubular or cast turbo manifolds cost a fortune
Lower under bonnet temps
lower turbo temps - possiable use of VNT turbos???

the problems with them are:

increased lag compard to the same turbo mounted at the front.
find a way of getting the cold piping to the front.
have to remove the back box wich means the car can be loud (unless you can fab a back biox after the turbo)
you need to get the oil back to the engine (easy with an electronic oil pump)
you need to make sure the exhaust piping is in good shape to provent leaks.

as with everything the bad bits can be worked around. the lag thing that most people talk about can be looked at in many ways. one is to use stock manifolds to reduce volume and heat loss. then wrap the stock piping all the way back to the trubo. people often find that stock exhaust piping is more than enough for flow. it the normal stuff really.

as said before oil pumps are needed. but they are widly used these days and work very well.

hope this helps

Chris.

[327ire]

My project took a bit of an upset a while, timing went off and Iv creamed the head and a piston. Iv been donated a 325i head and eta pistons so I should be back on track soon. The turbo is mounted and pipes are setup so now its just a case of getting the "megasquirt in a box' connected and tuned (after i fix my engine!)

Im not sure if Il just rebuild the 2.7 the proper way. the setup i bought was stock eta bottom end with a 323 head which is the least effective way of using the 2.7cc.

Im gonna move into a warehouse/ shed soon so the winter should produce some good pimping days!