m40 turbo

[bod7]

ive been searching the internet for more info on m40 turbo conversion,
ive read it can be run 10 psi safely
is this corect on standard internals?
and what is done with managment?, is a standalone ecu needed or modifications to existing ecu needed?
any help would be appreciated
cheers

[reggiebaby]

ask tylerma he had one . Im sure he used a Volvo low pressure turbo off of a 740 with stock internals

[chu346]

The M40 turbo is a great conversion, mine did 190bhp@8.5psi

Might have a kit forsale for the right price :winkeye:

[reggiebaby]

Would consider it myself but lack off funds means no chance. how hard was it chu i imagine the hardest part is the manifold

[mc_hawkings24]

how much is a right price? 20quid?

[reggiebaby]

im moving house so priorities changed for the time being and it got to be a toss up between an m50 change or turboed m40 . but i think the turbo is more fun . the manifold is the big problem if there is an easy way of doing that then the rest wouldnt be that hard i dont think as theres plenty of space in an m40 engine bay to fit induction pipes and theres already a hole low down in the front panel for an intercooler . im sure someone will tell me that im wrong thou lol

[chu346]

Would consider it myself but lack off funds means no chance. how hard was it chu i imagine the hardest part is the manifold

Yes, might sell my manifold on it's own or with the whole kit if you like.....

http://www.e30zone.net/modules.php?name ... 20#1932220

[theduck]

How much would you sell the manifold for?

[Rod1-BMW]

hmmm this may have changed my mind about an m50b28 swap...

[erst_ray]

has anyone produced a chip for this application? can it even be done? sorry to jump on this thread but it drives me crazy how everyone jumps straight to ms

[chu346]

Whats the problem with jumping straight to MS?

MS has loads of benefits for a small price. I built mine for £200. It gave me boost control, switchable maps, wasted spark and more. So I don't see what your problem is?

You can tune the motronic with a turbo, but it won't be ideal as tuning motronic is only good for low boost. It's a waste of time running low boost on an M40, might aswell do an engine swap.

[erst_ray]

dont get me wrong i know ms is a good system and cheap. I just want to know what the limitations of the standard ecu are. surely it would be a lot easier to tweak a few bin values than wiring in a whole new management system.

[chu346]

The problem is that you need 3d mapping with a turbo due to the fact that the boost would kick in at different rpms in different situations. In N/A or supercharged applications at each rpm/throttle point there will always the same amount of air going in, so motronic can control that well.

Wiring in a "whole new management system" isn't difficult, just gut a motronic case and then use the motronic connector and standard loom. Easy.

http://wiki.diyefi.co.uk/Converting_a_M ... Megasquirt