Thread: Think I went with too big of a turbo...

Tubular is my last resort/next addition to the VET cams. I'm going to drive around with the high lobe cam kicking on at 2k rpm just to see how tolerable/responsive it is. Plus overlap should be no worse then the GTiR cams .



Do you have the VET cam dyno vs the SR16's?

Vadim dyno that lets see all hell break loose in this thread , it might reach 100 pages lol

Ya, but they are on different ex housings.

When i dyno log manifold with VET cams I made 442whp. Going TS with the .78 housing I made 446 or something like that. Now, it is about 450whp. The biggest difference I noticed was in mid-range. Peak hp seems about the same now with the 1.6 cams and the 1.06 TS housing as it did when I had the log manifold. But that isn't the whole story...

On low boost, 10psi on log and VET cams made 280whp. Now, 10psi makes 320whp. A difference of ~50whp on just 10psi.

On med boost, 16psi on log and VET cams made 361whp. Now, 16psi make 395whp. A difference of ~35whp on 16psi.

As the boost goes up, the power difference between cams drops. After 20psi or so, the gains per psi of boost drop drastically. With the 1.06 housing and 24psi with 1.6 cams I am running about 450-460whp. So, the VET cams seemed to perform right up there. I have yet to break 500whp, but I feel the turbo is too restrictive. I'm gonna have to make the housing a bit bigger

For the record, i tried running the VE and 1.6 cams on the .78 housing. But they didn't seem to perform as well. I should have gotten a dyno graph of the VET cams with my tubular manifold and the 1.06 housing. The 2.0 cams seemed to perform identical to the VET cams with the .78 TS housing. the housing was just too restrictive. After changing the housing, it was a whole-different story. Car woke up a lot. Now I know, if you want TS you have to pick a larger housing than you think. Because of the difference in flow, a large TS housing will perform like a size-or-two smaller SS housing.

Coheed go 6262 or a 6265 BB like me dude time to upgrade and make real power ; D

AND yes as we test also from t3 .63 and log to a T4 .86 and tube , car was a whole different beast 4wd

I will be going bigger, just not 6262 big lol.

6262 w/ .82 is a perfect size turbo for a VE. Coheed you will probably lose maybe 3-400 rpm worth of spool with it. You have a good manifold so that helps. You will make crazy good power, spools up quick and hold it out to the end. Again lose 400 rpm spool down low but I gurantee after that you will make more power all the way throughout and hold power to whatever you want to rev it to. If thats 9k then yeah. So lose 400 down low to gain an extra 600-1000 rpm of powerband up top not to mention the gains themselves through the rest.

I may end up doing that, but I wanna keep the TS if possible. The GT3076r spools like a .64ar GT2871r. Probably faster. Not quite as fast as a disco, but response is very very close.

Yeah i would just get the larger housing though. Again go with the larger housing and you will have an insane topend and only lose maybe 3-400 down low.

No larger housings available

The turbos that use this 1.06 housing are usually only rated to 400-450hp. So I'm gonna try to grind out the last few inches of divider to open up the flow a little bit.

Well if you can get in contact with him I am glad to hook you up cheap. I dont know if anyone else on this forum is still in contact with him? he has disappeared of the map a bit recently

I do have a dyno of his vet cams. I know jp loved them due their response! Not quite the top end of the 16ve's but the power band was mahoosive