M20 B3x Naturally Aspirated Stroker build past, present and future

[Bearmw]

Incredible work. I too am interested in maxxed out m30 motors but question the feasibility of anything over 3.7L or so due to the bore spacing. How important is longevity?

[eb224]

Nice build. I have a Dbilas setup at the moment but it really kills the mid range of the engine, if you build a enclosed plenum and intake system I would be interested. Cheers Leigh

[digger]

i laid some thin plastic on the main airbox and put the carbon fiber on top to get a perfect fit. the plastic was there to stop it sticking. i put about 7 layers of 200g/m2 plain weave carbon fiber cloth which ended up 2mm thick and plenty stiff.

the rest of the box is 2x2 twill cloth which drapes better and looks more vibrant in a way. i deliberately chose plain for the lid to contrast plus it is more structural which is important since the lid only has slight curvature so could be too flexible otherwise

this is the lid.

[2mAn]

:popcorn:

[digger]

I love seeing what can be pulled out of the m20, I really want to build my m30 up like these m20s.

m30 has lots of potential probably 20% more than the M20 as far as peak hp just due to the bigger bore, valves and headflow. i also like the fact that you get to 4L pretty easy and even 4.2L M30 these days. An engine like that would be a monster if built right

[JCarp90]

Threads like this simply remind me that all I am is an ape that figured out how to turn a wrench.

[ADOPEWITASCOPE]

I want to do this so bad...

[88SuperETABD]

awesome work, and awesome numbers!!! m20 PooowWWWa!! Keep it up!

[F34R]

I love seeing what can be pulled out of the m20, I really want to build my m30 up like these m20s.

[Luis325]

Nice work man!

[CorvallisBMW]

Wow, not sure how I missed this thread until now. Amazing work and knowledge!

[digger]

a little progress

still need to build up some top coats of epoxy and cut it back smooth to get rid of the textured finish

[MasukBMW]

Bump! Need more now.

[The Dark Side of Will]

Yeah... DIY composites are pretty badass, especially with ETC resin.

[LJ851]

Fantastic !