A6 head. Cam worth it?
 

So I'm building this d16a6 with vitara's and I-beams. It'll probably end up between 8 and 8.5ish:1 compression when I'm done. This engine will be for road race, not drag race, so anything above ~250-270 whp will probably just be good for burning up my front tires, so thats what I'm aiming for, with a wide as possible powerband. The current turbo is a t3/t04e with a .48 stage1 exhaust side and a 46 trim compressor wheel (setup is on the bottom of this thread https://www.homemadeturbo.com/forum/...095#msg1214095 ). It spools around 3500 on my z6, so I think it should do the job pretty good.

Now I'm readin that the stock d16a6 valve springs takes a lot of beating, so slapping a cam in there and reving the piss out of it is supposedly ok, so it sounds like something I want. I've never driven a d16 with an aftermarket cam before, so I dont know how the powerband is affected. Is it just moved up, or does it get bigger? And if the turbo can deliver, when does a stock a6 cam stop making power?

And where can I get a cheap cam that doesnt require me to send them a core? I cant ship a cam from norway without getting raped at the post office.

Any ideas of how to build a 250whp d16a6 with a big as possible powerband that will last through 15-20 minutes sessions are welcome, actually. My head hurts now, I'm having trouble deciding what to do :p



Soemthing to look at while you're typing
http://fhm.no/image/81165/0/0/533
http://fhm.no/image/79896/0/0/533

Re: A6 head. Cam worth it?
 

i had a d15b2 with the bullfrogg 2624, converted to mpfi. that fucker screamed all the way to 8k with a decent amount of pull.... i was pretty suprised with it.

Re: A6 head. Cam worth it?
 

Was that with stock d15 springs? If it was, thats pretty awesome, d16 springs should be even "safer"... :6

Anyone know where the stock a6 cam stops making power? Cant find stock cam dyno charts anywhere, in fact I cant find a single a6 graph...

Re: A6 head. Cam worth it?
 

yes sir... i honestly felt pretty damn good up at that powerband.... even better with nitrous

Re: A6 head. Cam worth it?
 

a6 springs on a smaller regrind=rev to 10k and enjoy every second of it



stock camshaft peak power is based upon stock motor etc



b16a with itr cams stock=8200 peak
b16a with itr cams+port work+70mm tb+compression=9500


Look att the wheeze built by jeff frank 9000 rpm wheezzzzeeeeeee rips on stock 20 year old a6 springs. a6 springs=beefffffyyyy

Re: A6 head. Cam worth it?
 

delta 272 rips hard but i couldnt get the ------- idle antwhere decent on my a6 vitara build.


put stocker back in, idled fine but i missed the 272 everytime i drove it.

Re: A6 head. Cam worth it?
 

Great info! Thanks! I saw the thread a couple of times when I was searching around. Dont know why I didnt click it, but it was a good read for sure :y

Still need to figure out a way to get a core over to delta cams, though. Do you still have that delta cam laying around, 13th?

Re: A6 head. Cam worth it?
 

nah gave it to a friend for his carbed d15, he helps me out alot.


snag a cam off a site and mail it to delta, they are cool guys over there.

Re: A6 head. Cam worth it?
 

there is a delta right down the street fron my work I will see if I could find a cam

Re: A6 head. Cam worth it?
 

hmmm, well delta cam is one place. so "a" delta would be "the" delta in tacoma washington.