!!!!!Caution M20 porn inside!!!!!

[Dominic49]

Well that's great then, The 2 set's of busa TB's I have had sitting around forever are somewhere around 42mm I/D. Perfect for my plan's.

what are those plans? ridiculously oversized itbs?

[Miasma]

what are those plans? ridiculously oversized itbs?

Much larger motor there slick. Not a M20 i'm working with.

Choice of bore size is a balanced compromise resulting from the following;
1) A larger bore leads to lower flow resistance, but obeying the laws of diminishing returns.
2) A smaller bore leads to better throttle control and response (never underestimate) and improved fuel mixing.
3) The system should be considered in total - from (at least) trumpet flange to cylinder and proportioned accordingly

Basic references for BHP per cylinder, assuming ca 120mm from butterfly to valve head and a max of 9,000 rpm are;
Up to 30 - 30mm, up to 33 - 32mm, up to 39 - 35mm, up to 46 - 38mm, up to 51 - 40mm, up to 56 - 42mm
Up to 65 - 45mm, up to 74 - 48mm, up to 80 - 50mm, up to 87 - 52mm, up to 93 - 54mm.
These power figures may be increased by up to 10% in a purpose - designed and well proportioned system.
As butterfly to valve distance increases, butterfly size will need to increase in proportion to system taper and vice versa.
Lower revving engines and those with injectors placed before the butterfly will generally accept a larger body.


Taken from The Jenvey F.A.Q.


I am building a M30. Not only that but it's getting stroked and built for a turbo. Ill be just fine.

Ill only be losing out on Throttle response if anything, And prolly not even that due to the FI. Even so it will rev much more freely than stock.

[rs4pro3]

Started another little project today, just waiting on some Bosch coil drivers to come in the mail, to finish wiring it all up.

[uofom3]

yup... that's a stout m20.

[Miasma]

Man that thing is sexy looking, Any plans on cleaning/painting it (the engine bay) after you get all the small thing's ironed out?

[george graves]

good work!

[atomic]

Man that thing is sexy looking, Any plans on cleaning/painting it (the engine bay) after you get all the small thing's ironed out?

I doubt it.. That car is built to go not for show !! ;)

[Jean]

I wish I had your skills!

[rs4pro3]

I'm probably going to throw a painted I valve cover back on it at some point but that's probably it. I'd love to get everything sparkling clean and painted but just don't have the patience or time to do it.

[Miasma]

I'm probably going to throw a painted I valve cover back on it at some point but that's probably it. I'd love to get everything sparkling clean and painted but just don't have the patience or time to do it.

That's cool too man! Thing is gonna shit and git! Doesnt need to be clean. :D

[N2MYE30]

WOW!!! Great job!!!

[chbimmer]

Update.....More Videos? Anything?

[SamE30e]

Thats gorgeous!

[Ray McCooney]

Ely, you are the single most impressive individual on this site in terms of ingenuity. I will now admirably refer to you as the E30 MacGyver. Please do continue. That is all.

[chbimmer]

MacGyver.......what is that thing held together with bubble gum and fishing string?