M20 B3x Naturally Aspirated Stroker build past, present and future

[bmwandhonda]

Um, just stumbled onto this thread now. Absolutely awesome amount of work going on here, some crazy amounts of knowledge on show that is for sure!!

Keen for more progress and pictures.

[nando]

you'd make a form out of something else (wood, clay, another sheet of acrylic, etc). it depends on the exact type of acrylic, but it's more like 300-350f. the smoother the mold of course the clearer your product ends up. I actually used another piece of acrylic (stock lens) to make my mold, it lasted about 4 times before it melted.



your shape is a lot simpler so I'd think it's definitely doable. necessary? no, but then neither is an ITB'd, 3.1 liter M20 that puts most S50s to shame. :p

[digger]

Thermoform it. Its pretty easy. I made a new cover for my custom instrument cluster out of acrylic.

im not sure how id mould a piece without damaging my existing lid given it needs to be what about 275F ? i would need to use my lid as a mould and need something to protect it

[nando]

Thermoform it. Its pretty easy. I made a new cover for my custom instrument cluster out of acrylic.

[digger]

I'd be really tempted to run an acrylic cover over that airbox instead of the CF. Show off those trumpets..

thought about it but the lid is not flat so it would hard to mould acrylic?

[nando]

I'd be really tempted to run an acrylic cover over that airbox instead of the CF. Show off those trumpets..

[digger]

one way i know the car is faster than i have been used to recently is the inadequacy of the current brakes. will probably need to upgrade the fronts to a massive kit and rebuild the rears....cant fit that big of a setup under the 16" alpinas but a small spacer does allow a couple kits (MAssive, UUC etc)

[Massimo]

That is why you need a Tilton pedal assembly with remote reservoir. Haha

Loving the build can't wait to see the torque curve on this.

[digger]

Crazy ass linkage across the back of the firewall.

not good for pedal feel.

not only are the headers compromised due to steering linkage the intake is compromised due to booster. double whammy

the hood latch is also still on the same side. cheap German engineering....

[TrentW]

thanks guys, i like the m20 due to its simplicity and rawness

Indeed.

[LJ851]

Never dealt with a RHD e30. Had no idea the brake booster and reservoir was still on the LH side of the car.

Crazy ass linkage across the back of the firewall.

[ForcedFirebird]

LHD? the car is RHD

Never dealt with a RHD e30. Had no idea the brake booster and reservoir was still on the LH side of the car.

[digger]

Looks fantastic, the finish you have got on the plenum looks like a factory build. I can't wait to see what it produces on a dyno.

Can I ask what brake booster you are using?

Cheers
Leigh

thanks, this is the stock booster and MC, im not expecting any gains with this over the open trumpet run ill be happy if its the same.

i plan to get it retuned only a quick and dirty tune about 30min worth tops, i will make a simple bellmouth to be able to test without a filter (bellmouth is needed to ensure the flow doesnt go over a sharp edge and hurt airflow thats is why sometimes removing the filter makes less power as the test is flawed) and one without the lid to see if there is a difference.

im waiting for my new K&N still so i imagine this might happen 2 weeks from now.

moving to fix the exhaust now

[eb224]

Looks fantastic, the finish you have got on the plenum looks like a factory build. I can't wait to see what it produces on a dyno.

Can I ask what brake booster you are using?

Cheers
Leigh

[digger]

Loving the skills digger. Normally don't say much on this site, but why are you LHD in up-side-down land?

LHD? the car is RHD