BOOSTED ZC VTEC

hey, im building a ZC vtec engine with pm7 pistons and a D16Z6 head. what do you think the compretion ratio will be at with that combination? if the bearings are still mint in that engine, do you think that i shold re-use them or pick up a new set? and what numbers do u think ill be pushing on the dyno?
thanks -> kevin <-

chris_si98

no such thing as mint bearings on a motor that old.

And that's why they created honda compression calculators

http://www.zealautowerks.com/index.html

BOOSTED ZC VTEC

but shold i use them or get new ones? theres no marks on them or anything, i was just wondering. thanks.

polska_01

kevin u cheap *** get new ones LOL

iwanna93sihatch

Yeah man if ur gonna build it and there old you may as well get new ones while its apart saves you time money and heartache down the road.

BOOSTED ZC VTEC

i figured out tha compretion ratio and it is 12.1:1, what numbers do you think i might be pushing? and will a stock head gasket hold up to that compretion?

chris_si98

#s depend on ALOT more than just the static compression..It;s very hard to say.

chris_si98

I'd get new ones...

I'd also measure your cylinders for taper, out of roundess and over-bore to ensure that your block is in decent shape.

dingus888

get a bigger cam to help bleed off some compression get arp head studs port match everything and get new bearings

zeeman

iTrader: (1)

or quit wasting your time and money on a d-series n/a build, swap in a gsr and make the same, if not more power on a stock engine.
People spend like $5000 to build a n/a d-series to get what 150-160whp TOPS!!!. You'll get that with a $2500 gsr swap, and the all honda parts reliability.
Not that i just had a huge glass of Haterade or anything, i just don't like to see people spend money on building a n/a d-series and be totally disappointed after a trip to the dyno.

imported_Paolo

hey Zeeman , stop stealing my GTA slang

ek4dr

dynamic compression is what you really wanna know .. lots of calc's on the internet for this one

chris_si98

knowledge is horsepower..


LOL

zeeman

iTrader: (1)

u fold

BOOSTED ZC VTEC

alright i found 2 ZEX cams for that build, witch one should i use?

SERIOUS STREET / RACE (po. # 59100)
Great cam for increased power and torque with effeciency. Works with stock components. RPM OPERATING RANGE 2000 to 6700.

or

SEVERE STREET / COMPETITION (po. # 59300)
Best performance cam available. Large increases above stock cam from off idle to the rev limiter. Excellent high RPM power. Requires Spring #912-16. RPM OPERATING RANGE 2000 to 7200.

i was thinking the SERIOUS STREET / RACE cause i dont have to change valve springs but i rev my car past 6700 rpm.

here is the info on the cam:
Honda D16Z6 1.6L SOHC VTEC 1992-1995 Civic EX, 1993-1995 Del Sol SI and Honda D16Y8 1.6L SOHC VTEC
ZEX™ cams use exclusive XR Series lobe designs to produce unmatched gains in torque and horsepower. ZEX™’s Honda 1.6L SOHC VTEC cams are available for two specific RPM ranges to meet all your performance needs. Our Serious Street/Race grind is designed to be a simple “drop-in” installation and works well with stock components. The Severe Street/Competition cam is engineered to meet the demands of the serious performance and race enthusiast. Regardless of grind, the ZEX™ Honda 1.6L SOHC VTEC cams will provide the performance you need to “Own the Street"!

hey ZEEMAN all i have to say is "HONDA ENGINE CODES ARE LIKE *****, B'S ARE GOOD BUT D'S ARE BETTER"!
LOL!

THANKS AGAIN!:
-->kevin<--

imported_jdm ek4

What if you use P29 pistons? I know you can use these in D16A6 and raise the compression ratio to 11.3:1 if im correct. Wouldnt that be more reasonable? Isnt 12.1:1 a bit too high if its gonna be street driven daily?

Johnny_Burnz

MY d16y8 n/a loves the bottle

imported_civicshayne

when i was reading up on the compretion stuff and i thaught it was to high too, i found out that you can run that high of compretion daily as long as yuo run a high enough of octane fuel like 91 of 94. but to be safe i'll be funing 94 with an octane booster. it may be pricey but you will be safe.

BOOSTED ZC VTEC

THE FUNNY THING IS I ONLY HAVE THE DOHC ZC PISTONS AND I GUESS THAT I HAVE TO RUN THAT COMPRETION RATIO. LOL
-->KEVIN<--