wassup h-t, i got a ls-vtec setup going into my ej1 and was wondering what my compression and whp would be with the setup im going with. Any advice and help would be great, thanks h-t.
Setup:
jdm B18b long block
jdm b18c(gsr) head (stock for now)
2nd gen jdm b16a tranny
exedy stage 2 clutch
fidanza light weight flywheel
Itr pistons
nippon piston rings
Acl bearings
Arp head studs
Arp rod bolts
Aem short ram intake.
2 1/2 inch exhaust piping to 2 1/2 vibrant muffler,
try y race header.
so thats my setup for now, what kinda numbers will i be looking at with a good tune? Not really aiming for any number since i went from a sohc to this i know it will be a lot faster but yeah if i can get some numbers that will be great and also compression ratio, thanks.

 

Theres a dyno thread thats been goin for a couple years. I would look there.

 

 

Try this a well: http://www.c-speedracing.com/howto/c...c/compcalc.php

 

never used c-speed, is it more accurate than the http://www.zealautowerks.com/bseries.html one?

 

thanks, that actually helped a lot. seems like imma be around the 11.3:1 compression ratio so i shall be good with 91 octane since im in Cali.

 

If i can also get some whp numbers that'd be great, also planning to add cams later on so im saving for those right now but dont know which are best. what cams do u guys recommend from experience??

 

I just ran my build in both calculators, using same bore 81mm, stroke 89mm, head b16, and I came up with 11.96:1 on zeal and 11.32:1 on c-speed with out changing the piston to deck height, with then both @ .013 c-speed became 11.87 ( not a huge difference)

@ jceron64 you build came out to 11.32:1 c/r on zeal if I used the right pistons. But if your doing the build yourself and have the measuring tools (depth mic) you might be able to get a true reading by taking your own measurements and google a formula to calculate compression because not every engine is going to be exactly the same- hope this helps

 

If your compression is that high i would run a set of pro2s, I had large gains over b16 cams in my lsv. My motor made 215 with pro2s on pump gas with 12 to 1 comp and a ported head.

 

i came up with about 11.3:1 compression using c-speed with the jdm Itr pistons which compression is a bit higher then the usdm itr. and i am not doing my own build, by buddy is building my motor n i believe he does have the tools to measure so i will probably ask him to measure everything so i can know exactly where i am. But this did help, thanks.

 

Did u have a b16 head or a gsr head tho? im running a jdm b18c (gsr) head. 215 whp sounds pretty good, you must have a pretty good build for a na ls-v.

 

In my experience it has been more accurate than Zeal. I like the additional options that Zeal offers but their end calculations are always .2-.3 higher than they should be.

 

i did mine on zeal too and its 11.96:1 and on the c-speed its 11.3:1 with the same setup. so im guessing i might be around the 11.5:1 then?

 

I'd go with the 11.3:1.

 

Not bad, i just wanted to be safe running 91 octane because normally i was going with CTR pistons but was worried about having my motor ping since the compression was gonna be 12+:1 n wanted something safe since its gonna be my daily driver.

 

Neither of those compression calculators are correct when using CTR pistons, just for your reference. 11.3 is fine on pump gas.

 

yeah thanks, i should be fine then.
Anyonw know what whp range i should be in with the build i have?
bump!

 

 

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/all-motor-forum-guidelines-must-read-before-posting-2875316/


Guess my Horsepower Threads
There is no way to accurately answer such a question and it doesn't promote good technical discussion. These are not allowed and will be locked immediately. If your looking for numbers similar to a setup your running search or check the ''Official All Motor Dyno thread''