Thread: With regards to Turbo VE's

While I'm at it, More VE camshaft overlap:
SR20VET - 13*
SR20VE - 48*
SR20VE 20V - 57*
SR16VE - 70*
SR16VE - N1 (v1?) - 78*

VS the honda cams
b18* - 17*
B18C5 - 28*

Notice something here? The honda cams have more lift, but less duration and overlap than the VE cams. What do you guys think? The VE cams are bigger all around and would prob have better flow. But the ramp angle on the honda is a lot higher and would need stiffer springs? The VE has a ton more duration than the honda stuff. How much does the lift really help? apparently a lot.

awe, noone is basking in the glory of my findings. sniff.

i was quite suprised at the cam specs you found on the honda cams, so this must be why hondas are easier to use smaller turbos than the VE because of the lower overlap

exactly what I am thinking. They use a high lift, with a lower duration cam profile. This is why they can make such insane power for the boost they are pushing.

just lately the thought of using 16VE cams in my VE-T build keep appearing in my head, i know its been done before, just a couple of questions really. im thinking a GT35R with 82ar, equal length mani, who reckons this set up would work with the 16VE cams? or would i need a bigger turbo still? my R isnt going to be a street car, just drag and track weapon so im not bothered about lag because once it gets going it will definitely be going

What did you end up figuring out for the cam timing? If I'd seen this thread back in February I'd have told you to get rid of as much overlap as you can...

Bump.

I never adjusted the cam timing. It is useless on the stock cams because you can dial out as much as you want, but it will ultimately effect the bottom end drastically. By taking out 10* overlap on the high lobes you inadvertantly cause -10* overlap on the low cams causing some problems with pumping losses.

I wouldn't put the cams more than 5* out either direction, but that's just me. The VET cams are puny in comparison, but they have more lift. They are designed for turbo, so they perform way better imo. We will see which one does best on a 7500rpm powerband with a tubular mani this spring. I will be doing back-to-back testing.

With that turbo, that housing, and that manifold the 16 cams are a nice choice, but they are really really peaky. So you will need to rev to 9k at least to see the best powerband. Invest in some valve springs and retainers.

fuel and timing. either you're lacking the fuel requiered when the cams activate or you're giving it too much. if you tuned (if you did) with the cams deactivated....then you're lacking the fuel needed when he cams do activate which will get the nice vtec to pop loud and just get up and go. you have all the right parts to make lots of power. all you have to do is tune the bish! lol