does any one know what the compression ratio is with this set up? im doing a ls\vtec and the head was sent out to get port and polished w/minor milling... if anyone has done this before let me know thanks

 

Its around 11.1:1. I had that set up for almost a year.
*edit* I got two different calculations from two different sites. The 11.1:1 is the right one.


[Modified by Jackson, 12:47 PM 5/20/2002]

 

thanks for the reply guys, the JDM ITR seems yummy but i got a set of USDM ITR pistons (used 10K) for free when i bought the cams.... thanks for the imput

 

Your compression with those pistons and a stock head gasket will be 11.6:1 and with a stock 2 layer headgasket it is 11.9:1.

 

I did the calculation and with a b16 head it was 10.8:1 w/ stock headgasket.

 

check both, I am pretty sure the c-speed.com one is right.
http://www.c-speedracing.com/howto/c.../compcalc.html
http://www.bojangs.com/calculator/

 

Did the ITR pistons fit perfectly on the B18a rods or did you have to machine the rods or the pistons a little for it to fit? thanks.

 

You have to machine the rods.

 

the rods have to be machined for the wrist pins

 

the pistons has to be cut to fit the ls rods..... im not working on my block just yet, maybe next week or the week after, waiting on the head to be sent back

 

yeah jackson i got my calc. from the bojangs calculator when it was still up and runnig. I dont trust the c-speed for the simple fact of it says a stock b16 with PCT pistons and a 3layer head gasket has 10.8:1 compressoin. we all know its a little higher then that. atleast 11:1