Im about to build my y8 block and Im not sure how to measure for this type of stuff. I am looking into using the Endyn Roller Wave pistons(12.38-13.17:1 compression) and Eagle Rods. I also have a Zex Stage II cam. Ill post the specs of the pistons and cams below, I just want to know if someone could calculate this for me and tell me if Im going to have piston-to-valve clearance problems, all help appreciated! Thanks in advance!
_________________________________
Endyn Roller Wave Pistons:
D16Y8(Mid)
Bore-75.5mm
Stroke-90.0mm
Rod Length-5.394"
Compression-12.38-13.17:1
Dome Volume CC-3.09
Pin Diameter-19.0mm
Comp Height-1.162"

__________________________________
Zex Stage II Cam:59-300

DURATION

ADV.
Intake---Exhaust
260
232-------268
236

@.60"
Intake---Exhaust
220
190-------216
194
_______________________________
VALVE LIFT

Intake---Exhaust
.455"
.300"-----.430"
.310"
__________________________________
CENTERLINE

Intake---Exhaust
107°
111°------111°
115°

 

nah..it will be ok...BTW i put in the dimensions of the pistons as stated above and it comes out to 12-1 compression...according to the Zeal calculator...BUT being that it is a endyne piston they are correct. ALso the Piston-to-Deck Height is .020 witch is good, as the piston is still in the hole.

As long as the rods you are using are like OE and not longer i think it will be good to go. BUT im half asleep so, i could be wrong...lets see what other people say.

btw i hope you are doing more then that to be a "dohc killer" ...well maybe stock b16's

 

Any kind of ballpark pricing on claying the block?? This motor is going to be geting revved to all hell, so id like to know i wont have any problems. Especially after spending a grand or so on the block

BTW, ill be happy to beat a stock b16. It should tear up a few LS' too.

 

I found this calculator your talking about, put in the stuff. Came up with same thing, NOW do you think it would be ok if I used the Y8 Dual Layer head gasket? It will raise my compression up to 12.44:1, but will this affect anything else as far as clearances? Thanks again Jake!

 

thats alot of compression for a sohc motor : o(

 

are you planning to drive this daily? if so just make sure everything is at the exact specs. my suggestion would to be go to a well known machine shop and have it put to gether and balanced. just make sure you are there while they do it to know they are not ripping you off. g/l

 

yes, I plan to drive this as daily as possible, but I do have an alternate vehicle. It will be atleast street tuned by Vega if no dynoed. Ill prob run 93 or 100 octane most of the time with many race gas nights And I have a very reputable shop to do all my machine work and balancing, and they wont mess it up or rip me off.

 

 

I have 12.6:1 compression in my sohc and running 93 pump gas just fine with tuning.

Plastigauge and claying are very good tools for measuring.

We clayed my piston to valve distance, very helpful.