eg6madness

i know it is not quite an all motor topic, but my motor is all-motor.
I have a B18C with P30 Pistons, Fidanza flyweel, Buddy club 3 cams and cam gears (soon goin to switch to spec-4), ITR valvetrain, i Currently have the GSR IM but i have one of the home-job-ITB with GSXR flutes. JDM ITR4-1 header, 4.785 final drive and ITR LSD all on a spoon Chipped ECU (plan to switch to Hondata s300 very soon, or crome but crome seems to have to much extra things to buy in order for me to burn the map).

The car is quick, but i have been thinking about spray for quite a bit but i got it confirmed when i was on my way home few nights ago. a friend of mine with a supra, made a mess of me when he came on boost in the high speed range. from low speed it was fine but when i got 3rd and he started to spool i ran out of breath, and he went away.

I want to kno exaclty how much is my compression with the Stock deck height B18c with P30 pistons.?
and can i spray on that motor?
I was told that i can , i just have to pull the timing 2 degrees for ever 50hp and to increase my fuel pump and ingnition system. Is this so?
What would be a safe shot for me to run with out blowing up ?
Anything that i need to get or that i should do ?

em2ssm02

research and research some more...check all of the archives


..all of them

there is a site that figures cr but i cant think of it right now.

94hatchvx

well ill start off by asking how much money you want to put into your nitrous set up. fogger or direct port? since you are thinking the itb route with the gsxr itb's i would say fogger due to the itb's needing extensive modification since they are not for your car. with a stock bottom end i would say no higher then a 75 shot. the best i have seen for a basic nitrous kit that is EASY to install is zex. they have the import efi wet and dry. wet sprays fuel into the intake tube with nitrous and dry sprays just nitrous into the intake tube and then bumps up fuel pressure through the injectors. i ran a zex 75 shot dry with 450 cc injectors and a walboro 255 on a bone STOCK b16 for around a year until it melted a piston. but nitrous takes its tole on everything. if i were you i would just got with a zex dry or wet kit on a 75 shot which will make a SIGNIFICANT difference as you will see, some bigger injectors and a bigger fuel pump just for safety. the way the zex kit works is the solenoids and the brain are in one box. if nitrous pressure falls or rises it leans or richens fuel as needed thats why i prefere them. if you run a 75 shot, just retard the timing 2-4 degress as zex sais and your ready to go. you might look into getting a cometic head gasket also. for your compression and set up a zex 75 shot is ideal. hope i coverd everything.

94hatchvx

oh yeah. if your a jdm gsr your compression is 10:6:1 and if it is a usdm gsr it is 10:1. ideal nitrous compression on pump gas is around 10:5:1 to around 11:1 maybe a little higher. nitrous loves a little more compression but watch yourself on pump gas how high you go.

eg6madness

i do have JDM B18C but i want to know how much would my compression be with the P30 pistons.

where nitrous is conncerned i am thinking a direct port kit since i willl be goin over to ITBs soon. i was thinking the NX Nozzle kit but that thing cost $1000. is the NOS direct port kit good?

ken00si

Go with the Zex wet kit

Oooh and by the way, I have one for sale. Let me know if you are interested.

92redhatch

from my expierience on my b16 i would say the use a NX kit because they have lifetime warranty on most of they're parts. I ran a dry 75 shot on my b16 untuned for 6 months spraying atleast twice a day. Till one day i broke a chip off one of my valves. As long as you tune it i say you can do up to a 100 shot. buy a NX wet kit ( you wont regret it). Nitrous is very very fun.

94hatchvx

well direct port is deffinately the right route for the money. it really depends on how much your going to spend. as for compression. as long as its not above around 11:1 on pump gas nitrous will love it.