Turbo or Supercharger for E34 M-5?

[91m5]

Does anyone know who can boost me? I`ve seen them for 92 on..but no 91?
I found some company out of Germany called,Lenz Motorenchnik that makes a sick setup,twin Superchargers!! But I cant get anyone.?.
I`ve got 2 faster rides,but none as nice as my M-5.
My Evo gets to much attention,( from the police)and the M-5 just gets respect!I`m hooked on BMW, just need a boost.:D

[Gayle]

Seems like a nice car. How about some pictures since this is your first post?

[TheEndIsNear]

Yes pictures would be great...

[angrypancake]

from what i understand it's a reaaaal bitch to blow an s38 engine, as it's so highly tuned from the factory.

[91m5]

Im taking pictures in the morning. I`ll post them soon. Shes black on black,black wheels,trim and lower body. Thank you gentlemen.

[Gayle]

Thank you gentlemen.

And lady. :)

[91m5]

:) Sorry,Ladies n Gentlemen.;) I should of read that Gayle
And lady. :)
.

[91m5]

i just read about some guy who has a Eaton supercharger on his 91M5.
He ran an 11.3@137mph!! on pump gas! Anybody know of this setup??

[Jon K]

i just read about some guy who has a Eaton supercharger on his 91M5.
He ran an 11.3@137mph!! on pump gas! Anybody know of this setup??

Don't bother - its such a pain in the ass to put a roots blower on a car not designed for it and its kind of a cheap blower to go with - yeah the parts are cheap, but the rotors wear out relatively soon and lets be honest, are you going to be happy with it?

My background info:

I used to have an Alpina supercharger on my E34 525, I repullied it and had it around 9 psi. It was fun, but after about 6 months I was bored - I now have a huge holset turbo on my car that I just got done driving - :) - and I really cannot recommend anything else! The problem with a CF blower is that all the boost up REAL REAL high. A roots blower may bring the air down a little lower, but if you're serious about torque the only REAL answer is a twinscrew which simply does not exist for the S38.

If you are serious about turboing an E34 M5, and only about 0.004% ever are, you need to go to http://pure-pf.com/ the owners name is Andreas and he has put seveal S38s into the 8 - 9 second range. He is also the one responsible for VS Motor E36 S38B36 twin turbo that ran I believe a 7.7

Either way, BMW designed the S38 as a high output L6, so it's high compression. You need to do internals or a thick headgasket on it to bring the compression down to at least 9.0:1. This sort of work is not cheap, especially since your parts will be from Sweden and this is an S38.

[91m5]

Thank you Jon K.I knew someone in here was a Turbo guru. I`m getting the feeling it cant be done ,without spending a ton of cash.I think I`m leaving it N.A. Thankx Jon

[angrypancake]

the best you could probly do is stroke it to 3.9L and go that way, it will give some decent performance gains, nothing like a turbo, but still. you should check out the m5 forum, www.m5board.com

[Jon K]

Honestly if its a US car, I'd leave it at 3.6L and go with S38B38 cam gears, chip, euro headers, etc and be happy with it. Unless you have like $15,000, turbo is not going to be your friend.

[91m5]

:) just got done stroking an Evo8. 2.0 to a 2.3. Made huge tourqe gains:D
the best you could probly do is stroke it to 3.9L and go that way, it will give some decent performance gains, nothing like a turbo, but still. you should check out the m5 forum, www.m5board.com

[91m5]

:) $15k..I can deal with. Is that what you think it will $$?
Honestly if its a US car, I'd leave it at 3.6L and go with S38B38 cam gears, chip, euro headers, etc and be happy with it. Unless you have like $15,000, turbo is not going to be your friend.

[Jon K]

Thats what I think it would cost you in parts, materials, and shop time. That's not what it would cost installed, fabbed and out the door running.

Call Andreas @ PPF if you are serious - if you don't have $25,000+ don't waste his time.

PS his car just ran a 9.4 sec 1/4