Introductions, 20vt BTDT

[JSHADZI]

Nice one Javad, pretty cool!!! now get working on that IM to remove bottlenecks and let us know how it runs!!!! Also try decreasing cam overlap and we'll see...

any exhaust backpressure measurements to see how efficient your exhaust setup (EM, hot side and exhaust) is?

Hey buddy, yes, IM is after the cam adjustments, I've begun cutting up some manifolds, I'll have something in the coming week or two. Cam adjustments are next.

No exh measurements as of yet, this 415hp is with a full intake and exh. system installed (no MAF of course ) Hear it for youself:

http://www.034efi.com/Movies/80tq_outside2.avi

[audiman]

Got any other footage of your car?? I couldnt find a link from the 034 website.

[JSHADZI]

Got any other footage of your car?? I couldnt find a link from the 034 website.

All the links, right here:

http://www.034efi.com/Movies/80tq_outside2.avi

http://www.034efi.com/Movies/80tq_outside1.avi

http://www.034efi.com/Movies/80tq20v1_2.avi

http://www.034efi.com/Movies/80tq20v2_3.avi

[olsonjus]

Isn't that a bit lean Javad? Looks like you are running damn near 13:1 at the torque peak. Why run it so close to the edge? Or does ATP's dyno WB just read lean? Is it picking up A/f at the tail pipe?

Justin

[JSHADZI]

Isn't that a bit lean Javad? Looks like you are running damn near 13:1 at the torque peak. Why run it so close to the edge? Or does ATP's dyno WB just read lean? Is it picking up A/f at the tail pipe?

Justin

Justin, yes, the dyno reads at the tailpipe, the WB in my downpipe reads almost .5 point lower. I'm also running on 100 octane, which I am happy to run between 12.5 and 13:1. On 91, I target 12-12.5:1

[JSHADZI]

Hello all, well, put in some 7A cams, what a difference, I picked up 200 ft/lbs of TQ at 4500 rpm!

So took her out to the drags last night and got in 5 runs, it was a cool 60dF night, no traction, but lots of cool air for HP. Managed a 12.2 @117mph, bested a 119mph blast. Traction was a major issue, with a 6krpm launch I sat on the starting line in 1st and 2nd, speedo reading over 50mph, spinning the tires. Finally in 3rd it connected, resulting in a 112mph run none the less.

Looks like I'll need some bigger tires despite the R-compund 205 width tires on the car currently. Oh yes, see dyno comparison between 7A cams and CAT 274/264 cams below.

Cheers

[JSHADZI]

Blue chart is 7A cams with 25psi boost, red chart is CAT cams with 28psi boost. I expect close to 450whp with 30psi or 3 BAR. Full boost by 4krpm with the same turbo, previously 5.5k rpm. Its clear the CAT cams need wider lobe seperation, I plan to experiment with them in the future.

[Pisobiker]

Very interesting comparison, Jshadzi.

Now would be nice to see what happens with ADU (RS2) cams (or even just with 3B-ABY-AAN). I suppose you might get some even better mid rpm responce, while probably loosing something in the upper rev range.


Marco

[JSHADZI]

Very interesting comparison, Jshadzi.
Now would be nice to see what happens with ADU (RS2) cams (or even just with 3B-ABY-AAN). I suppose you might get some even better mid rpm responce, while probably loosing something in the upper rev range.
Marco

Yes, that would be interesting, I probably won't perform it as the 7A's give the most mellow high end cure I'd want. The difference between these 2 cams is dramatic, with the 7A's is gone the IMSA like Bark and rasp above 6krpm, and the dead response below 3krpm.

[audiman]

Thats nice to know as im running both 7A cams in mine