i read somewhere in a post on this site that the skunk2 stage2 cams require a high compression engine in order to make power? I'm running a b18c block with jdm itr pistons and was wondering if my compression would be high enough to get good use out of these cams or if i should just stick to some milder cams like the stage1's or some other cams. i will be dragging the car almost every weekend and driving it to work during the week.

 

i think you will be "ok" with that compression, however i would look into getting better valvetrain...

 

JDM ITR Pistons are like 11:1, right?

Well.... from what I understand, that is the bare minimum if what you should use with Stage 2's. Most people will say more like 11.5:1-12:1 or higher. I'm running 11.8:1 with Stage 2's. (Can't tell you any numbers because I still have to work out some things and get it Dyno tuned).

With Stage 2's, your Dynamic Compression will drop way down due to the extream overlap of these cams. So, to compensate for this, you have to increase your Static Compression higher than normal.

I'm not sure which would give you more power with the JDM ITR Pistons, Stage 1's or Stage 2's. But one thing is for sure... you won't get the full potetial out of the Stage 2's with only 11:1 compression.

You'll have to ask around to see which one's are will be give you the most with JDM ITR Pistons.

 

wow, i was told that i would have about 11.5-11.6:1 compression with those pistons in a gsr block

 

Well..... you might.

I don't know for sure. I didn't know they were that high.

But I've been wrong before...... A LOT.... haha....

 

yep, your compression is up to par with those Skunk2/stg2 cams.
GSR head + JDM ITR pistons yeild about 11.5ish cr.

Most big lift B-series VTEC cams need high compression (over 11.0) to gain maximum power from them.