i am currently running a stock B16 with a built GSR head. i did a conpression check to find out my 4th cylinder is low..175 compression. the rest are 205. if i find out for sure i need a new block whats the best for me to spray a 50 shot on between the B20, B18B, B18c, or B16? thanks for your help.


Modified by levison at 9:54 AM 12/13/2007

 

rebuild the one you got

 

If its going to be a smaller shot, I'd go with a B18B because of the lower compression. The problem is the rods, they won't like as much power as a B16/B18C would, but the CR is getting a bit high with those two.

I'd get a B18A/B since its still cheaper to get set it up for LS/V than to get a good B16/B18C block, and if you blow it afterwards, its 1/3 the price to replace.

 

from my experience and understanding...nitrous likes high compression

 

word

 

i would spray on this motor until u got another one rebuilt

I would personally run a GSR block LS crank if i was NA

 

find an ls short block for dirt cheap, easy
add your vtec head, easy
spray for the win!
Add some arp rod bolts

 

if you have the money then GSR hands down. but with the comp only being slightly off i would just run it as is until you can rebuilt it.

the higher the compression the better, nitrous doesnt work the same as boost so the lower comp will just make you slower if you go with an LS. not to mention vtec motors are just better all around.

 

ok thanks for the advice guys.