Thread: Update on VE cams?

Well, I've used the sr16 cams. I swapped to the 20V cams from the standard 1.6 cams. I would like to try the N1 next.

On another note, I went to SLC to meet up with Blair. We cruised SLC and got some lunch. Saw a black SRT4 in SLC who wanted to play. And on the way back I get a flyby from a blue SRT4. Yes I got video, but it wouldn't be allowed here. We played a bit and I followed the group of cars to the Utah Honda meet. It wasnt much of a Honda meet, there were a ton of different makes and models there. Probably over 100 cars and they kept flooding in. It was really cool. Met up with some long-time friends I haven't seen in years.

Send me your vids Coheed. PM me the links. Thanks

Im sure you put a nice hurting on the SRT4's. I have yet to ever lose to an srt4. Matter fact 27 different srt4's under my belt ranging from stock to a 60 trim t3 on 25 lbs making 500whp. lol. They seemed to be the only ones that would ever want to run me.

Video uploaded, pm sent.

no fare he can only rev to 6500 lol.

Poor poor SRT4. Didnt stand a chance.

Keep up the good work Jeremy.

let me know how the n1 cams go thats what i plan to use on my turbo build. with twin scroll overlap should be ideal

That depends on what size turbine housing you use. As Coheed has already tried with a twin scroll 30r, it didnt do to well and a large open t3 housing such as the .82 would have done much better.

In t3 frame you might want to look into the largest turbine housing you can get with n1's.

Coheed didnt have much luck with the whole twinscroll thing and high overlap cams.

JP had great results with a twin scroll t3 setup but he was running a 1.32 a/r turbine housing which i believe is the largest you can get in t3 format.

I wouldn't say I didn't have luck with the twin scroll. It responded very well and made good power. But I felt the top end was still choking too early. This was evident with a huge surge of mid-range torque, that after 6000rpm would drop pretty rapidly.

The twinscroll housings can offer the benefits of split-pulse: quick spool, no reversion etc. But the backpressure in the housing increases drastically with rpm. The housings, even in large sizes, only seem to flow as well as half their AR suggests. Since each scroll is much smaller, a 1.06 housing has basically a .5ar flow capacity. A 1.32 should flow like a .82, but probably a bit less.

If you look inside a twin scroll turbine housing you can see the divider wall that takes up so much space and impedes flow. The exhaust pulses have to squeeze through a slit in the volute no thicker than a quarter inch. The other part of the equation here is the turbine size. Larger turbines flow better generally. So the twin scroll has to be coupled with the right turbine. If you ever go twin scroll T3, just get the biggest housing you can find. I do recommend going T4 for twinscroll though. The housings are much better designs and flow a great deal more.