M42 stroker build begins

[i8ur911]

Ordered my cams finally. Decided to go a little less aggressive on Ralph's advice; 279/274. Should be here in a week or 2.

Cleaned the manifolds today and start porting. Will try to post pics as I go. Flywheel and head will be dropped off next Friday at machine shop.

Anyone have a good source for the VW lifters? I was quoted $71ea and Pelican Parts' website says they are NLA (??).

[mabeer]

I picked them up at autohausaz.com for $11.86 per

[i8ur911]

Thanks mabeer. Ordered mine today.

Anyone familiar with megasquirt? Trying to decide between megasquirt 1 and megasquirt 2?

Want to do Millers MAF conversion, but they don't offer the WAR chip for our cars

[wazzu70]

I'm using VEMS on my car (www.vems.hu). Its still a work in progress, but I was able to get the car up an running fine. I chose to rewire the whole engine, but that is not required.

For megasquirt, get MSII at least, but overall Im not excited about their products.


Only go the standalone route if you enjoy wiring and tinkering. If you like truly plug and play, just get a chip tune through Barrie at Midnight Tuning. This route has MUCH less headaches.

If you have any specific questions, post them up and I will do my best to answer from my experiences.

[i8ur911]

Wazzu, I'm not an electrical guy by any means and won't pretend to be

Talk to me more about your source for chip tuning...?

I have a truly amazing tuner, Brentuning, that I've always worked with (he actually helps major tuning companies...Cobb....create tunes and figure out problems when they can't). I've been emailing him regarding the build and he says the stock Motronic will only take it so far...especially with a MAF conversion (and potentially itb's). I'm also kind of dumbfounded at why Miller has been "unable" to create a WAR chip for our cars.

On a side note, has anyone done the GSX 750 itb conversion? These itb's seem to be readily available for dirt cheap ($300).

Thanks for all the help guys! Wouldn't as confident without M42Club.

[i8ur911]

Also just ordered 19lb injectors from Fleebay.....rebuilt for only $40

[colin86325]

You can use 48 gram lifters if you do the S50 cam tray modification. 

[Warsteiner]

When I weighed my 33mm S50 lifters they came in at 44gms each.

Cheers,
~Ralph

[wazzu70]

When I weighed my 33mm S50 lifters they came in at 44gms each.

Thanks for the weight, I was curious how much the the 33mm lifters weighed in comparison to the VW, ect.

Wazzu, I'm not an electrical guy by any means and won't pretend to be

Talk to me more about your source for chip tuning...?

I have a truly amazing tuner, Brentuning, that I've always worked with (he actually helps major tuning companies...Cobb....create tunes and figure out problems when they can't). I've been emailing him regarding the build and he says the stock Motronic will only take it so far...especially with a MAF conversion (and potentially itb's). I'm also kind of dumbfounded at why Miller has been "unable" to create a WAR chip for our cars.

On a side note, has anyone done the GSX 750 itb conversion? These itb's seem to be readily available for dirt cheap ($300).

Thanks for all the help guys! Wouldn't as confident without M42Club.

My source for the chip tuning is not secret. Midnight Tuning is on the board regularly and he is very helpful (I have not used him personally). I would talk to him if you are interested in this route.

If you know a tuner you want to use, its always best to ask what system they prefer and go with that. Your friend is correct in that the motronic can only do so much. The question is, how much more do you need it to do?

I dont think Miller sees a market for the M42 to support. They are capable of making the product if they wanted to.

[i8ur911]

Just scored an M44 crankshaft and M44 rods for $100 shipped

Looks like I'm going stroker. I'll grab the S52 pistons we have at work and put those in my pile to go to the machine shop

I will have to contact Midnight tuner about a possible chip. Either that or MSII.

[wazzu70]

Ralph, do you have Euro S50 lifters or US S50?

[Warsteiner]

wazzu70, I stayed with US S50/S52 33mm lifters due to the fact that I kept the M42 cams and had them reground. The Euro Lifters are shim over bucket not hydraulic which would mean a completely different set of cams. However, changing from just the stock 35mm to 33mm is a huge weight savings all the way around from buckets, springs, seats, retainers, keepers and don't forget the 6mm valves.

Cheers,
~Ralph

[wazzu70]

Gotcha, that is a pretty significant weight savings! The factory lifters are over 70gr in the early M42!

[bme30]

Ive done the gsr-r itb set up.  Tuning with tunerpro/ostrich 2.0

Not bad so far.  Still need to do some dyno fine tuning for ignition advance.  Also going to redesign my fg plenum after i pick up my air/oil separator and a smaller k&n filter

Check out this very long build thread lol

http://maxbimmer.com/forums/showthread.php?t=149345

[i8ur911]

Got my m44 crank today. Looks like its in great shape. Along with those came m44 con rods. I also received another package with 4 rebuilt Bosch 19lb injectors

Time to start dropping stuff off at the machine shop.

Also ported and polished the runners on the upper intake manifold. I'll tackle the lower manifold this weekend as well as the throttle body.

Time to start thinking harder about engine management.....lots of good options.