high compression on pump gas
04-23-2006, 06:11 PM
#1
Member
Thread Starter
Join Date: Apr 2005
Posts: 72
Likes: 0
Received 0 Likes
on
0 Posts
high compression on pump gas
the more i think about what i want to do to my b18a1 the more i want to lean towards an all motor setup. can you bump up the compression ratio with out any ecu modifications and how high of a compression ratio can you run on regular gas.
04-23-2006, 09:07 PM
#2
I
Join Date: Jan 2001
Location: Westside til I die
Posts: 56,525
Likes: 0
Received 0 Likes
on
0 Posts
Depends on what you have to tune. With a standalone system like hondata/neptune/etc and a good tuner, I've seen 13:1 run. With no ECU mods, I've seen around 11.5:1 run on premium. On regular, I wouldn't go above 9.5:1. If you want to bump the compression, you're at least gonna have to run premium. To get the most potential out of the B18A all motor, you're going to need a VTEC head.
05-08-2006, 03:01 PM
#3
Junior Member
Join Date: Jan 2005
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
if you start really researching all motor builds. not just honda, but the whole science and art behind it. I think you'll come to the conclusion that static compression ratio is like hp. just a number. when you calculate your cam overlap, stroke, cylinder pressures, flowbench numbers, piston shape and everything else involved you'll get the dynamic compression ratio- the number that matters to the engine, and makes it prone to pinging. you can find engine builders have created some 16:1 CR B16s that run on pump gas....