Talk to me about cams :)

Post by **Merlin** » Thu Mar 29, 2012 12:57 pm

With my suspension just about finished im soon to turn my attention to the ATR H22a7 I have sitting waiting to go into the 4G.

What aftermarket cams are there for the H22? and what price are they roughly? The H22a7 has a comp ratio of 11:1 so am I correct in thinking this engine would make good use of uprated cams?

Post by **Lude-dude** » Thu Mar 29, 2012 1:06 pm

skunk2, crower, BC crower, JUN

I would go with skunk2 stage 2,

I have the crowers and there all good, but needed something modified on the head cant remember exactly

for that reason skunk2 seem the best quality

JayJay · Post by **JayJay** » Thu Mar 29, 2012 1:08 pm

Skunk2 seems to be the most popular, and they ALL the valvetrain bits that you'll need pretty much.

nitin_s1 · Post by **nitin_s1** » Thu Mar 29, 2012 1:19 pm

A7 cams are really good as they are, this is claimed by all the ATR owners. There is good power to be had from them.

Post by **Merlin** » Thu Mar 29, 2012 1:27 pm

Yeah I know the a7 with basic mods (H/I/E - which I have already) can make 230bhp+ with a tune, take STK's lude for example. I am wondering what power can be gained through more agressive cams with the higher comp of the a7.

Lude-Dude I rember you saying that your lower comp ratio was holding you back on power and not hitting the limits of the cams?

Post by **Merlin** » Thu Mar 29, 2012 1:29 pm

Also what is the difference between stage 1 & stage 2?

Post by **Lude-dude** » Thu Mar 29, 2012 1:32 pm

yeah higher comp and I would probably be in the 250's maybe

so some aggressive cams might be a nice idea for your motor, its gonna cost abit I can see with the valve train to go with it.

but maybe like me you could find some 2nd hand bargains

but I got some goodies to add so I'll see what rich can do

and now have full 2.5" system

JayJay · Post by **JayJay** » Thu Mar 29, 2012 2:11 pm

The Stage 1/ Stage 2 difference is the lift and duration of each cam, don't think there's any other difference! If you check the cams on the Skunk2 site I'm pretty sure there's more info/a comparison of them.

Post by **Merlin** » Thu Mar 29, 2012 2:25 pm

Cheers. I have also read a little of the difference between Tuner and Pro series, the difference being idle and other stock characteristics. Im going to have to think about what to get

Post by **Merlin** » Thu Mar 29, 2012 2:29 pm

How lumpy is your idle Lude-Dude? I know you have a Skunk intake manifold, but anything else that gives power?