Track Day Project

[tn325i]

The more he talks the more you will realize he knows exactly what he is talking about.... And a super nice guy on top of that... Makes a very cool car guy.

That is all.....

[kid325e]

Damn he answered that like a God.

Any more questions?

[Dyno4mance]

just out of curiosity why did you go with a m20 why not a m5x baced motor?

First of all I was not planning on using a bmw engine at all, as an LS1 would have been the first box checked in a perfect world...and in the future this maybe in the plan.
My next idea was to build a 2.1 stroked M42 using a diesel crank from England and on and on...but the cost would have been quite a bit more than the current engine, 2 cams etc and it would have been very simular to the 4G63 evo builds we do all the time.....(so too much like work!!!)
As I understood it at the time of planning M30s were just too heavy, also my research led me to believe thet the M50/S50 was also quite a bit heavier than a M20 baby six...and maybe not as suitable for the e30 chassis
the M20, although an old design, has a very well designed cylinder head that offers very good high and linear torque that can be usually had from a 2 valve head...the only thing missing to get sufficient cylinder pressures to make good power was compression....so I fixed that with 11:1 pistons.
Now I feel with proper tuning using MS and a 7000 rpm red line I feel I can easily achieve around 230bhp on higher octane fuel...I feel that power level is more than enough to move a 2500lb car quite swiftly through most of the events and classes I would like to compete in.
The biggest gripe I have with this driveline choice is not the engine but the lack of choices in transmissions and gear ratios for the Getrag.
I am sure people will disagree with my choices and have different opinions than me on my commentary....but I have built the car now and I am very pleased so far with the results...Flame suit on !!!!

[Stevie30]

just out of curiosity why did you go with a m20 why not a m5x based motor?

Because hopefully when he goes for the m5x swap he will sell me that engine. Drool, drool.

[nando]

just out of curiosity why did you go with a m20 why not a m5x baced motor?

because no M50 could ever sound like that. :evil:

[gregslow318i]

just out of curiosity why did you go with a m20 why not a m5x baced motor?

[kid325e]

Very impressive. Motivational for sure. I wish I lived near you so I could check this thing out in person. Great work!

[bottlecape30]

very nice I really like that sound

[Ray Smoodiver]

Looking awesome mate!

[scabzzzz]

Fort Oglethorpe represent!

[nando]

vibrant huh, heh, I've been looking at their mufflers/cats/resonators. t-bolts are a hell of a lot better than shitty u-clamps, that's for sure!

how does it run with the 3" exhaust? I'm planning on pretty much the same thing (already have all the mandrel bent sections) just with more "quiet". :p

[Dyno4mance]

where did you get those t-bolt clamps?

They are from a company we use called Vibrant...the bracket we made cups the two pipes and fixes to the tranny and the t bolt clamps keeps things secure and in place...Infact everything from the manifold back is from Vibrant... they seem to mostly cater to turbo applications...

[nando]

Bav Auto headers with a custom resonated 3" pipe

where did you get those t-bolt clamps?

[tn325i]

Sounds much meaner in person !!...:)

[Dyno4mance]

very nice.

I must have missed it, what headers are you running?

Bav Auto headers with a custom resonated 3" pipe