m44/m42 spec rally engine

[sh123]

oh...and the engine arrived yesterday. but im away until tomorrow  So I have plenty of time to think about it here in the hotel 

[Darky]

Hi Sion

M44 ecu?

I noticed that you have a m44 front timing case and Bracket for the crank sensor like a m42 mod.

That's just annoying new toy and your away.

Cheers Rohan

[sh123]

Yes m44 ecu.

And the trigger wheel had to be moved to the outside as they are inside on the m44s


Sion

[sh123]

so this weekend this happened





obviously it is not done. but got engine in. all water hoses sorted which I was worried about as I had relocated the expansion tank. sorted most things under the manifold out.  Fitted the clutch and flywheel as well.

Have an issue though. I bought injectors for it around 4 months ago unknowingly for m42. It didnt cross my mind the diameter of the holes in the manifold was smaller. I know vac do adapters but im in the uk.

So ive sent a few emails around to people who do supercharger kits for the m44 here in the uk as I see they do adapters as part of the kit.  I did also think maybe (i need to measure first) if I can take apart the m44 injector and cut the bottom off I may be able to get the m42 injector to sit inside? was just an idea.

and im sorting everything for the oil cooler out tomorrow. so that will be my job for tomorrow night!

ive been in touch with the the guy who will be mapping the ecu and there is a waiting list of 3 weeks. so im contemplating booking it in to get mapped in next 3/4weeks. as it will be run in on the rolling road as well.

[wazzu70]

Can you machine the injector cup in the manifold to the larger diameter? Not sure if there is enough meat to do that or not. Other option is to wed in an aluminum injector bung of the proper diameter.

I havent worked on an M44 so I am just going off what you are saying is the problem

The M42 injector is more standard so being able to fit them easily opens up a lot of options for you.


You are remapping the stock ECU if I remember correctly. Are the locations for fuel and ignition maps known for the OBD2 system? I have a standalone so I have not looked into it and am just curious.

[sh123]

The holes in the manifold are to big so I just need and adapter to sit inside you see. I have had a reply off a injector specialist who has adapters and is looking into the stock that he has incase he has the appropriate size. Otherwise i may get somebody to weld them up or possibly we have a lathe at work we may be able to knock something up (we rarely use it)

With regards to mapping, here in the uk there is a guy who is well known for mapping bmw ecu's. A guy I know had his mapped there. Same ecu. 2ltr block stock head and cams they managed 180bhp on standard ecu, manifold and injectors.  And making the most of the disa valve in the m44 to get good torque.

[wazzu70]

Awesome. Having the hole in the manifold be too big rather than too small is an easier fix!

Good news on the remapping. Seems a lot more common outside the US for there to be people available to do this. I wish I had gone with the M44 ecu and mapped it out myself, but at the time a standalone was an easier path.

Cant wait to see this up and running!!

[sh123]

Yes hopefully i can sort it fairly easy.

Yes he did say he will take a whole day to do it. Thats as much info as I can give you sorry haha

I cant wait either. Im getting all the little bits that are missing today such as exhaust manifold bolts, cooler pipework.  This should just leave me with the injector problem. I fitted gearbox and sorted most the wiring last night.

[sh123]

She turned over today. But didn't fire. 

We think that it is down to a crank sensor. I was supplied with a three wire sensor like is on the m44 anyway. But i think its a hall affect one rather than an inductive one.

I do however have another sensor to test with tomorrow. I just have to lengthen it a bit. Ill then see if i get a signal on the scope

[sh123]

And today it was running!!

Was incorrect sensor.

Booked in for mapping in two weeks time.

[wazzu70]

Glad you figured out the issue without much fuss!!

[Warsteiner]

Awesome!!

Cheers,
~Ralph

[Darky]

Great news, how does it feel?

[sh123]

She sounds. Its going to be ran in on the rollers. So had a quick blip on the throttle (nothing major) and sounds pretty good. Sounds standard idling. Exactly how I want it tbh!!but the figures shall tell all!!

[Darky]

I'm amazed at the level of control Sion, I'd be going around the block the moment it started!