92extremehatch

Can a SOHC Vtec either D16z6 or D16y8 handle a compression ratio of around 13:1 or 14:1.

once the engine is built to those specs what would be needed to keep it running smoothly.

Does anybody know the power potential of this?

zeeman

iTrader: (1)

A flawless tune thats for sure. I know there was someone on here running 13:1 on pump gas, but that was on a 2.0L sleeved b18c1.
Well the power potential would depend on your setup. Running 13:1 CR on a stock engine would be a waste, but if you built the head (cam, valve springs, titanium retainers, port and polish, valve job, smooth the combustion chambers) and got all of the bolt-on's i would say you'd have a pretty potent d-series.
With that high of a CR i would run a stage 3 cam and some colder spark plugs.

92extremehatch

thanks Zeeman any other advice would be great i just finished with my turbo d series and looking to build a High compression NA D series now

LEITNER

we need to remember that static compression ratio doesnt mean dick. build it to bring all your tolorances to a minimum and let the compression ratio fall where it may. you will need some serious work done to that engine and it will be a race engine in your street car and that means lots of maintenance. minimum you should have a cam and oversize valves in a fully ported head. still to do that engine is going to be a ton of work and MONEY.

92extremehatch

Thanks for all the advice