Maximum HP

[Andreas]

Andreas, you should post up a thred about the build up of your car, it looks mighty impessive.

You can view a more detailed write-up of the story so far here :

http://www.e30clubsa.co.za/forum/viewtopic.php?t=1118

[alpinaclone]

Andreas, you should post up a thred about the build up of your car, it looks mighty impessive.

[funcrew]

That is good to hear. Don't give up on the M20 too easily. It is a good and reliable engine.

If you decide to play a bit with your engine and make it rev nicely, you will want to put some nice rocker arms in there, otherwise you will be condemned to stay below 7,000 rpm. Here are some pics of my billet rocker arms.

This thread re-inforces a concept that my kids call "Dad's Theory of Real-Life Economics." Here goes:

"If I had an unlimited supply of free money, I could buy some really cool stuff." :grin:

[Andreas]

Thats bad ass
You give me hope

That is good to hear. Don't give up on the M20 too easily. It is a good and reliable engine.

If you decide to play a bit with your engine and make it rev nicely, you will want to put some nice rocker arms in there, otherwise you will be condemned to stay below 7,000 rpm. Here are some pics of my billet rocker arms.

[Andreas]

I don't care if it's expensive and inefficient, that's frigg'n badass

what CR and crank did you choose? the 10:1 MM pistons are non interference, but I bet that schrick would like the 11:1 pistons better..

Thanks for the compliments. I know that I can build a more powerful turbo M20 engine for much less money but I wanted to try this. The car is going to be used as a track car only - it is too much of a hijack risk to drive on public roads in South Africa. We generally have quite hot weather and most turbo cars only survive 2-3 laps before becoming too hot.

nando, I have the MM 3200 Rally, 86mm Forged Alusil pistons ( compression ratio 11:1 ) together with their H Beam, 138mm long conrods.



The crank I purchased locally at my BMW dealer to avoid shipping expenses and potential damage. I bought a E46 330i crank - 89.6mm stroke.

Here is a picture of my custom, floating brake disc setup. 330mm * 28mm discs with 4 piston AP Racing calipers.

[E30Idea]

A built up and boosted M20 can easily do 400+.

I usually don't listen to what "kids" tell me.

That is what I hope to hit on "dynoqueen days" but 300 on the street is reasonable at the rear wheels

[MR 325]

A built up and boosted M20 can easily do 400+.

I usually don't listen to what "kids" tell me.

[nando]

I don't care if it's expensive and inefficient, that's frigg'n badass

what CR and crank did you choose? the 10:1 MM pistons are non interference, but I bet that schrick would like the 11:1 pistons better..

[andrewintraining]

Thats bad ass
You give me hope

[CorvallisBMW]

^^ fucking awesome, keep us informed on your progress!

[Eliminator]

I am also interested in the max NA output of the M20 engine. I decided to give it a go. Hopefully it will be finished this year June / July.

Here is a pic of a mock install for fitment.



Provided there are no clearance issues with the Metric Mechanic pistons, the engine will feature a 304 deg Schrick camshaft. Some other specs : 7,500 rpm limit, billet rocker arms, Autronic standalone engine management, JB Racing lightweight aluminium flywheel, 3.1 stroker.

Wow, I like it! Can't wait for dyno numbers..

[Andreas]

I am also interested in the max NA output of the M20 engine. I decided to give it a go. Hopefully it will be finished this year June / July.

Here is a pic of a mock install for fitment.



Provided there are no clearance issues with the Metric Mechanic pistons, the engine will feature a 304 deg Schrick camshaft. Some other specs : 7,500 rpm limit, billet rocker arms, Autronic standalone engine management, JB Racing lightweight aluminium flywheel, 3.1 stroker.

[andrewintraining]

Errr
yeah I'm looking for an N/A but I want it to be a bimmer engine ;]

Like an e36 m3 engine ;]

[swimstarguy]

I'm sure he was talking about with FI

Are M42's easy to come by?

Sure?
If you look hard, it's easy enough. There are people around ditching them for newer engines so their comparably cheap. they're not the best if you're looking for NA power as they're not the fondest of spinning like other 4 bangers around (s14, b16, s42... >_>) Their high compression ratio and lack of knock sensors makes them last resorts for FI builds as well.

If you're looking for high horse power m42's aren't the way to go.
Check out m42club.com for more info.


~Zar4

[andrewintraining]

I'm sure he was talking about with FI

Are M42's easy to come by?