M42 turbo fact thread

[chodedub]

Wondering about FPR and what brand of injectors are recommended

[jakeb]

nice man!!

[elcoy]

1st start since complete engine rebuild...ms3pro!


http://vidmg.photobucket.com/albums/...psgqkwdxlf.mp4

More vids!!

Congrats, looks and sounds pretty f-in sweet.

[JRW21]

1st start since complete engine rebuild...ms3pro!

http://vidmg.photobucket.com/albums/v83/whitebred21/20160315_181900_001_zpsgqkwdxlf.mp4

[JRW21]

Got it sorted out and RPM synced now. Does anyone have a solid base tune they wouldn't mind sharing?

[JRW21]

Position is the same. That's one thing I left alone.

[MVincken]

how is the position between the wheel and the sensor?
I don´t know if you changed it, but if it´s too far away it won´t send a signal

[JRW21]

Finally finished wiring this thing up. Started plugging in the basic setup configurations.. Moved on to test mode..all was good until the very last test... No RPM signal. Hit the key engine cranks and No RPM reading whatsoever. I do hear the fuel pump and fuel injectors coming alive while cranking. (this is with no fuel, just testing)

Ohmed out the crank and cam sensor. Both perfect at 520 and 1k at the sensor. Pulled the ms3 connector to test ohm reading at the ecu and those pins checked out fine too..

Odd thing is if I tap the crank wheel or sensor the fuel system turns on and a blip reads on the RPM gauge. I pulled the sensor while still plugged in and ran a wrench across the bottom in quick intermittent passes to somewhat imitate process and the pump stays on and I receive a low constant reading on the RPM gauge.

That lead me to believe I had a bad sensor...Swapped in a new sensor and no change. I know VR sensor are extremely finicky but I am at a loss on this one. The only thing different about the crank wheel is I painted it. I can't imagine that would matter since a VR sensor is magnetic pickup.

Here is a shot of my ignition setting:

[JRW21]

Can those of you who have made 300whp or more and have a custom intake manifold on your turbo M42s post some pics and details? I'm gathering info to build a one so when I upgrade to my Frankensteined turbo I can make some real power, none of this estimated 250whp and 13s 1/4mi rubbish.

I want to do it on the cheap, and use the bottom part of the stock manifold for the flange and such.



I am a big megasquirt guy, but I've been working with it for a while now. MS3 is impressive, but I haven't set any of them up yet, let alone MS3-Pro. What features do you require that have you shooting for MS3 instead of MS2? One can build a MS2 setup that uses the stock wiring harness for ~$500.

I like the entire ms3 pro package and cleanliness of it. I am running brand new wire through the whole car so not wanting to use any of the stock harness. But, to narrow it down to the ultimate purchase was the built in datalogger/sd card.

I posted this pic over on m42club of my wiring progress(I believe i saw your username in the thread):

[Dj Buttchug]

2871 is awesome on m42. It is expensive +/- $1000 but well worth it. BB turbos spool quick so I see boost at around 2600 RPM

[econti]

GT(X)2860 is a much better match than a 2871

[varg]

Sooooo would a Holset HX35 with twin scroll housing be too large on a mostly stock M42?

Yes.

Well it sold, so now I am looking at GT2871r's. It was a 12cmm exhaust housing, twin scroll t3, non waste gated housing, and a 48mm compressor inducer.

You would want the 9cm housing. A GT281R with a .48A/R or .63A/R turbine housing is a good turbo for an M42. Might be overkill depending on your goals though, that's an expensive turbo, and if you're not looking at making over 300whp you're better off with a smaller journal bearing turbo.

[elcoy]

Well it sold, so now I am looking at GT2871r's. It was a 12cmm exhaust housing, twin scroll t3, non waste gated housing, and a 48mm compressor inducer.

[23732]

Sooooo would a Holset HX35 with twin scroll housing be too large on a mostly stock M42?

There are many different HX35s. What is the turbine/compressor dimensions?

[elcoy]

Sooooo would a Holset HX35 with twin scroll housing be too large on a mostly stock M42?