Who Here Tracks an M42?

[e30pq]

I track an M42.

http://www.cardomain.com/ride/2980038

I co-own this car with a buddy of mine. We did most of the work ourselves. The link tells the story.

[Gooch]

I hate to be that guy, but any updates on this?

[omar85]

I drift mine, but i just pulled it for an m20. It plenty of power but i broke the oil pan and i happen to have an m20.

[dblmikeusa1]

I track an M42.

http://www.cardomain.com/ride/2980038

I co-own this car with a buddy of mine. We did most of the work ourselves. The link tells the story.

Impressive! How much did the motor work alone cost?

[nando]

Just bigger bores... way over square. Major, major project. Titanium rods, forged pistons...the only things that weren't done were shim and bucket lifters and ITBs (hence the legendary "S" 42...F1 power-plant)

87.6mm+ bore? that's pretty aggressive considering it has the same cyl. spacing as the M20/M50 motors!

[rob_e30]

Impressive! How much did the motor work alone cost?

Rule #1 Never Add It All Up

[DCColegrove]

Rule #1 Never Add It All Up

Rule # 1a

If you do indeed add it up...Never tell your wife.

[318iser]

Could we see a picture of your intake manifold design/ any dyno or flow numbers compared to stock?

[e30pq]

Some in car footage from a recent BMWCCA race

http://video.google.com/videoplay?docid=-1828467435408384413&hl=en

[sumyungguy]

I have a flow bench and chassis dyno at my disposal, I just dont have an extra manifold lying around.

[Fair!]

Not sure if they are allowed intake manifold changes in STS but Terry Fair is building a full on autox car for STS with his 318is......The Vorshlag Motorsports guys. You would get solid feedback from them FOR SURE......Might wanna look them up.

We don't "track" an M42 car yet (we will after the SCCA Solo Nationals, later this month) but we do autocross a 1991 318is. Our project build is documented here and also here. Its mostly an autocross car, built for the SCCA "STS" class. We did just add a cold air - that's all you can do on the intake side in STS. We've been running Street Touring classes at Nationals since 2004 and know the rules pretty well. Still, there's a lot more performance to be found in the suspension instead of the drivetrain. We also concentrate a lot of effort into DROPPING WEIGHT, as the other cars in our class are 300+ pounds lighter.



So far our car has dyno'd at 122 whp with the stock airbox in place and using a hideous exhaust, complete with the original 200K mile cat. I just lopped off the entire exhaust after the factory header last night (the cat alone weighed 18 pounds!) and am in the process of building the mandrel bent 2.25" diameter system with a new cat + muffler today. Should drop some 40 pounds and pick up a few horses, we hope. We also added "tuning" (a reprogrammed chip with +500 RPM and supposedly more power) last night; that plus the cold air and exhaust warrants another dyno pull, probably next week.



I'm not running this car at Nationals this year (my wife Amy is), but running our LS1 powered E36 instead (XPrepared). That car weighs almost the same as the E30, but has triple the power. :)

[Autobahn Sport]

I love watching your 'is' build up! Keep the good stuff coming Fair.