M20 B3x Naturally Aspirated Stroker build past, present and future

[digger]

Will do thanks

[mila325]

I have a spare one.. let me know if you're interested.

[digger]

One part is M-tech 2 piece, Lhs panel just In front of wheel arch on quarter panel

[mila325]

Not a 325is :( What broke? I'm assuming part of your M-Tech II kit. I have some pieces if you want to divulge what broke?

[ForcedFirebird]

Car is totally fixable and I'm still driving as per normal but I'm questioning if it's all worth it

Don't do that! Keep the e30, and keep building it :)

[digger]

Car is totally fixable and I'm still driving as per normal but I'm questioning if it's all worth it

[2mAn]

Yea I was just sending him a wCOTMderful message and got bad news instead :(

[Sh3rpak!ng]

Oh no :( :( :( not the kind of update I ever want to see

[digger]

was minding my own business then boom, someone crashed into me....its making me reassess my plans. we will see what happens

[Bearmw]

What happened?

[digger]

The details in this thread..... Can't wait to get my stroked finished.


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I hear you, unfortunately I may never finish. Recent events have put a rather large obstacle in my way, such that it all seems so far away at this point.

[digger]

After seeing these results and part throttle goodness I definitely want that 2nd harmonic with my upcoming m20! Do you think a y pipe would act similarly? I have parts for either 3rd harmonic with factory h pipe precat or I can put my y pipe after the giant factory cat for 2nd.

Yes, y pipe will be same, similar to h as well . I'd do y they flow better if you're happy to use a single pipe

[MrBurgundy]

The details in this thread..... Can't wait to get my stroked finished.


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[whitebulat22]

The harmonic lengths I obtained from pipemax are primarlily a function of the peak hp rpm so for an engine with peak hp in the 6250-6750rpm regardless of other specs the numbers are approx

4th harmonic: 400-425mm
3rd Harmonic: 800-850mm
2nd Harmonic: 1600-1700mm

Torque

After seeing these results and part throttle goodness I definitely want that 2nd harmonic with my upcoming m20! Do you think a y pipe would act similarly? I have parts for either 3rd harmonic with factory h pipe precat or I can put my y pipe after the giant factory cat for 2nd.

[digger]

for reference this is the manifold sitting on a spare stock 885 head showing the change in port entry size, so port entry is not much bigger despite expected power about double stock b25. Equivalent to ~ D39-40mm