b16a2 head
ctr cam shafts
omni head kit
skunk2 cam gears
b18b1 block
ctr pistons
itr rods

am i gonna be ok with this set up or am i gonna hit valves or is my compression gonna be like 13.1

 

use the ls rods. you'll be in the low 12 compression and you should be fine if you are using the ctr cams. the piston wont hit the valves

 

if i use the type-r rods what will my compression be?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by teamvirus &raquo;</TD></TR><TR><TD CLASS="quote">if i use the type-r rods what will my compression be?</TD></TR></TABLE>

Your pistons will be feverishly stamping the head, pushing up on it.

ITR rods are physically too long to fit in the block with an LS crank. You must use the LS rods, or get custom pistons to use the ITR rods.

Stick with the LS rods, get some ARP rod bolts, and use P30 pistons instead of the CTR's.

The high dome of the PCT (CTR) piston tends to disrupt flame travel in the combustion chamber. If you use P30 (JDM B16) pistons, you can mill the head to achieve your desired compression, which would effectively create better flame travel, thus making more power.

- Derek

 

wow...that was great information

 

what if i put the itr rods and ctr pistons in a b16a2 bottom block will if still hit?

im thinking yes

 

i got sk2's stg2's and stock b18a pistons someone said i cant run that because they will hit the valves i never heard that before???

 

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rukusmasta2 &raquo;</TD></TR><TR><TD CLASS="quote">i got sk2's stg2's and stock b18a pistons someone said i cant run that because they will hit the valves i never heard that before??? </TD></TR></TABLE>

I believe that has to do with the size of the intake valve reliefs on the PR4 pistons. VTEC pistons have larger reliefs for the larger intake valves on the VTEC heads. With a higher-lift cam like the S2S2, I would not run stock B18A/B pistons.

Reason 1.) You have a high risk of piston-to-valve contact with a high-lift cam on PR4 pistons.
Reason 2.) Skunk2 recommends at least 11:1 compression ratio in order to run those cams effectively. With PR4 pistons, you will have a compression ratio in the mid-9:1 area. Spend the extra few hundred bucks, and buy some higher-compression pistons.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by teamvirus &raquo;</TD></TR><TR><TD CLASS="quote">what if i put the itr rods and ctr pistons in a b16a2 bottom block will if still hit?

im thinking yes </TD></TR></TABLE>

No, actually. In that case, the pistons would never reach the top of the cylinder. ITR rods are physically too short to fit in a B16 block with a 77mm stroke. Your compression ratio would be almost non-existant.

- Derek