Messages

1

For Sale / Re: Conforti & Dinan chips for the m42

« on: May 19, 2016, 06:04:01 PM »

My Dinan chip rev limits at 7100 rpm.

2

Engine + Driveline / Re: Maximum power from a stock M42.

« on: November 04, 2015, 03:55:27 PM »

thanks for the info, guys. I am stuck with using an original BMW FW, no aftermarket allowed, but I can lighten it.

3

Engine + Driveline / Re: Maximum power from a stock M42.

« on: October 13, 2015, 07:13:59 PM »

The engine I've picked up is from a 91, so that part is good. The valve timing settings for track use is a hard one to pin down, though.

4

Engine + Driveline / Re: Maximum power from a stock M42.

« on: October 08, 2015, 11:49:29 PM »

Hi Dave,

Solid lifters- I could run an M44 complete if I had one, but the M42 is more plentiful, and I've got one already. The rules say I can't touch the internals, although no one would notice.

I like the looks of the M40 flywheel, but availability and price will drive that choice too. It'd be nice to machine my existing flywheel but I'd need data to back that up before trying it.

I'm not sure of my current diff ratio. I will be checking though, as I may want to go 5% shorter to hit max revs on the straights.

I've just spent tonight going over the wiring requirements to hook this engine up. The list of things to measure and test fit is rather long! Good thing i have all winter to do it.

Thanks
Rob

5

Engine + Driveline / Re: Maximum power from a stock M42.

« on: October 07, 2015, 08:31:26 PM »

Thanks Rohan,

It is an E30 M42, and I have to use the stock intake. I weighed the flywheel today at 28 lbs without the clutch. I'd rather not have to buy an M20 flywheel and change the starter, so I'm sure which way to go. 

Flywheel weight and the overall weight of the car are a big concern though.

BTW, the rules also call for pump gas only, so no race gas. Another help is that I don't run an alternator or power steering, so the only belt is the water pump.

6

Engine + Driveline / Maximum power from a stock M42.

« on: October 04, 2015, 11:14:32 PM »

Hi everyone. I currently race an E30 with a modified M10. I have purchased an M42 from a 92 318i convertible and I am looking for max HP at the top end for track purposes.

The class rules call for a stock engine, so all I can do is run a chip (which one?) a very open exhaust (no cat, and not much of a muffler) any cold air intake and filter I want, and any valve timing.

The engine internals and injection must be stock, so I'm looking for the best I can get on 94 octane pump gas.

I can run any flywheel, too. Based on these rules, what should I run? Bottom end and midrange are unimportant, eveything I do is 4500 rpm and up.

Ideas?

Thanks