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

SR20GTi-R mentioned the same in my WTB thread. The thing is their overlap is fairly major and I don't want to deal with the additional pains, including cam gears.

Spending big on 300whp sucks, that's all. DET would have been there already .

jpsr20det? I can send him a PM and see if he still has them .

I was thinking more of mixing 20ve cams and 16ve cams. You already have the 20ve cams.

Could work, would need to find out about overlaps though. I do have a set of 16VE cams just sitting in the garage....

OE SR20VE cams
Low lobe INTAKE - .331" LIFT /220º DUR - Low lobe EXHAUST -.260" LIFT / 244º DUR - OVERLAP - 0º
High lobe INTAKE - .421" LIFT /264º DUR - High lobe EXHAUST -.407" LIFT / 268º DUR - OVERLAP - 48º

OE SR16VE:
Low lobe INTAKE - .279" LIFT / 200º DUR - Low lobe EXHAUST - .313" LIFT / 244º DUR - OVERLAP - ---º
High lobe INTAKE - .437" LIFT / 280º DUR - High lobe EXHAUST - .437"LIFT / 280º DUR - OVERLAP - 70º

SR20VE FSM Screenshot



SR16VE FSM Screenshot

That would be a free option if its viable. I did not figure out the over lap before posting. I had though about mixing the 20ve with the 20v cams since I have both.

dude, so impossible and costly it is the change the manifold? down here we got like only 3 guys total that does a well done manifold wherever you want it, one of them lends you his Jig , you bolt your turbo to it and adjust it where you want it , he then use the jig to make a manifold for around $600 USD Total. see his work here Picasa Web Albums - BCRLimited

you guys have top welders and fabricators with good SS material ready.

is that swain tech coating, it looks good.

I gotta calculate it out. JWT S4 cam's have 28* of overlap and are considered good boost cams. So if I can get the overlap down it would be awesome.



I don't have proper welding equipment, I'm tempted to buy a good mig for this reason though. Where I live there is no one to really weld it for me either.

But with the amount of overlap in the 20ve cams, 48*, I would have to have a fairly freely flowing manifold to really see the benefit, thus getting a proper boost cam seems like a better idea.



Nah the VHR exhaust paint. It sucks though, I properly baked it, etc. and it's already flaking off from the manifold and downpipe.

For that you need a tig welder. You can use a MIG to tack it together and have someone tig it for u. When I made mines I just made up my mind and ordered the pipes from ace stainless and the head flange from mazworx then went to town. It took me a week from start to finish. I'm just sorry I never made a jig. Having a spare motor helps a lot too.

Looks like SR16VE intake cam and SR20VE Exhaust cam would equal to 60* of overlap.

SR20VE intake cam with SR16VE Exhaust cam would equal to 58* of overlap.

I can't seem to find the 20V cam diagrams, to check what the overlap would be.

how much overlap do the sr16 non n1's have