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

[george graves]

Ely,

Could you do me a favor, and document your tensioner setup when you get around to that part? That is a part too many people gloss over.

[Jordan325iC]

this is pretty cool, i have seen some neat n/a m20 builds, but this takes the cake, the 2nd coolest was a m20 my auto tech teacher built with triple weber 48s, and high rpm bottom end, i think it made like 220 at 7330 or some sht like that

It's actually an FI build, via supercharging. Just FYI.

[rs4pro3]

No problem George. I may start working on it this afternoon, I have a spring loaded tensioner already(don't remember what it came off, as I got it at the junkyard over a year ago). It's going to be tricky to get it in as there isn't much space.

I'm actually not building the m20 block, just using that worn out engine to test fit everything on. I already have a 2.7 stroker in my car, that all these goodies will get bolted onto. Now the real m20 build will come later on when I rebuild a block with those 11:1 pistons I've got.

[uofom3]

with forced induction it won't be a problem, with N/A it possibly could.

I have enough material to build a second plenum so if this one works how I want. I'll replicate it but get it TIG welded:D

I didn't catch that this was going to be non-NA. But from what I understand about intake air flows in an airbox, I would seriously consider geting larger velocity stacks and having an airbox that can hold more air. I'd take peek at some of the 6 cylinder CF airboxes out there for some inpiration. great fab work none-the-less.

[rs4pro3]

Well the plenum will hold ~4.5 liters of air right now, the engine displacement is 2.7 liters so that is ~1.6 times the amount of air then the total engine displacement. So I should have no problems with any cylinder not being able to draw enough air. Especially when there will be ~6psi of pressure thanks to the blower later on down the road

[rs4pro3]

They be on the car





Drove the car around yesterday, throttle response is amazing, car is running pig rich so rich it killed my wideband o2 sensor so had to pick up a new one today. Still have a LOT of tuning to do. Looks like I'm going to have to go hybrid AlphaN as, as soon as the throttles is cracked open the kpa goes straight to atmospheric.

[A.LACK]

Badass! I could imagine what that thing sounds like.

[backtrail69]

S/C down there?

[uofom3]

super-fuckin-awesome.

couple of notes I've found on tuning that have helped me, you may already know this but I wish someone had told me these things...

- When you crack the throttles, you will see a momentary lean condition... don't sweat it. It's all about where the tuning is in a static position on the map.

- Make sure you do all of your tuning at the same temperature or within +/- 5 to 10 (max) degrees every time. Otherwise, you'll be chasing your tail as the motronic tries to correct. If you are building compensation tables, you have a hell of a task ahead of you.

- I see 2 bar of pressure on the FPR... it's idle I know, but don't be afraid to up it to 4 bar at high rpm instead of the standard 3 bar. A lot of guys do this with their s14's depending on what they are seeing for AFR or if they are running out of injector on the stock FPR.

There is an awesome book that you can get at Borders for like $25.00... it's called something like ,"Installing and Tuning Engine Management Systems". I highly recommend it for quick reference, general information, etc.

Finally - are you sure you killed the WBO2? What system are you using???

Awesome build.

[Julien]

Where is the old booster?

[rs4pro3]

Thanks guys booster is gone, Master cylinder mounted directly to the firewall Here are some pictures from that process.










As for the tuning, I'm running megasquirt so no concerns about motronic correction. That pic of the fuel pressure is with the car off, if anything I may drop the pressure as I stepped up from 19lb to 24lb injectors. And I'm using the LC-1 wideband, it's been in the car for 2 years or so. The heater cell failed in it from overheating, They don't like extreme lean or rich conditions and I was running in on the extreme rich side. No matter what I do it keeps popping up the same error message, unplugged everything and reset it from scratch and same error. New sensor was $56 at advance auto so not too bad.

[So Live]

So whats the brake set up? What master, what brakes? Any mods to the pedal? How does it feel compared to stock?

Looks mean dude!

[dinanm3atl]

Still think it is weak sauce ;)

Good Job Ely!

[rs4pro3]

280mm disks all around, rx-7 4-piston calipers up front, 25mm MC(I'm going to go back to stock to get some more line pressure with the manual setup), e30 m3 rear calipers with solid guide bushings, Wildwood adjustable bias valve, Master cylinder and pedal rod pickup moved 1" up to get more leverage.

I haven't put the blower back on yet, and am debating if I will or not, TN-325i rode around with me yesterday helping me do some tuning, and said it felt almost like it had the blower on it.

[Greekstyles]

wow this thing on a flyby is going to sound insanne!!!