Ive got a jdm b18c with 310cc injectors and 255lp walbor pump, If I upgrade to the ctr intake cam, do I need to upgrade the exhaust also. I found a deal for skunk 2 stage II for 580$ new plus shipping. The ctr cam is 280$ from hmotors, would it be wise to get the stage II or will I not be getting full use out of them with stock internals?

 

You won't be getting full use out of either of those cam setups with the stock internals. May I suggest doing some research in the all motor forum, there's plenty of good cam information there.

 

we'll im going for a mild build, should i get the ctr intake cam and itr exhaust if thats the case?>

 

Define mild. There is no solid definition for it. Your idea of a mild build may be 10.6:1 compression and CTR cams. My idea of a mild build is 11.5:1 compression, JUN 3's and ITB's. Do the research and you should be able to make an intelligent cam decision by yourself. And had you done the research you would know that CTR and ITR exhaust cams are identical and that CTR and 00-01 ITR intake cams are identical.

 

When I say mild, my goal is to run a low to mid 13 second pass. Right now I'm at 14.2 with a 2.2 60ft. I plan to upgrade IM, cai, header, and tuning. I was going swap my gsr intake springs to the exhaust side with itr exhaust cam, and buy itr intake springs with a ctr intake cam, does that sound about right?

 

well if I upgraded my retainers, springs, and got skunk 2 stage II, on a jdm gsr, would I yield better gains than just the ctr intake cam. Like I said my goal is a mid to low 13 second car, I dont want to go overboard but then again I dont want waste my time buying the ctr cam to find out I needed the skunk 2 stage II. I really dont plan on touching the rods+pistons. What do you think?

 

For one, you would be overcamming the engine with skunk2 with the stock static cr.

We worked out that the minimum static CR that would keep SK2 Stage 2's (assuming an intake ABDC closing spec of 49 degrees which hasn't yet been confirmed by anyone here) at the 15% gain in cranking pressure that you want from using the dynamic CR calculator was 11.6 and that 12:1 would be ideal. So there's your operating range for that.

If you would go to skunk2 stage II's you will need dual valvesprings that can withstand the lift of the skunk2's, ie, better than stock, skunk2 dual valvesprings would be fine.

if you go for the Stage 2's or Jun 3's, get a kevlar belt for peace of mind with their ramp.

- Skunk2 Stage II INTAKE lift- 12.3 mm, duration 266 @ 1mm
EXHAUST lift - 11.8 mm, duration 262 @ 1mm

- Skunk2 Dual Valvesprings
Seat Pressure -72lbs @ 1.300" Open Pressure - 185lbs @ 0.400" Max Lift 0..505" or 12.827mm Max Lift

Cheers..

 

if i got a 3 layer oem hg would the s2s2 be good?