highest compression ration on Pump gas
Kunundrum
12-10-2002, 06:52 AM
Ok I have desided on building a B18A and I'm gonna change the pistons (maybe the rods) but I want to know what is the safest and highest compression ration I can run on 91 octane gas. Keep in mind I will be using an full MSD SCI ignition.
is 12:1 to high ?
is 12:1 to high ?
red4thgencivic
12-10-2002, 09:18 AM
12:1 is a little high for 91 octane..... but I think it'd me managable...especially with the ignition....umm I think the WRX and the celica GTS both run like 11.5:1 on 91 octacne so you should be alright. That's your call...I think it's a little high but you could pull it off. You might want to get a second opininion though.
dropshop
12-10-2002, 12:05 PM
full msd sci intiotion thats priceless :D :D :D :D :D
MSD IGN really are useless on a honda
the stock one is so much better
Especially if you are going NA
12:1 on a B18 it totally achievable
but you will need a few things
A) HONDATA, Convetr to OBD1 and buy an S100 systen and get it tuned right
B) bigger injectors 12:1 will need fuel 310's are minimum you could just buy 450 dsms and accouont for then in the hondata
C) CAMS you will need bigger cams to take acvantage of the HIGH compression Crower makes ls cams
D) TUNING THE MOST IMPORTANT PART, Get it all together w what i said to use and go have it tuned by a hondata dealer
E) Consider a Vtec head LS head flow like shit and if u have it apart any way slap a B16 head on it
F) FUCK THE NA SHIT and run BOOOOST on the LS add pistons and rods and hondata. inj and turbo and POOF 250+ whp
if u need any help i cmake and sell turbo kits for 4g's and sell hondata
MSD IGN really are useless on a honda
the stock one is so much better
Especially if you are going NA
12:1 on a B18 it totally achievable
but you will need a few things
A) HONDATA, Convetr to OBD1 and buy an S100 systen and get it tuned right
B) bigger injectors 12:1 will need fuel 310's are minimum you could just buy 450 dsms and accouont for then in the hondata
C) CAMS you will need bigger cams to take acvantage of the HIGH compression Crower makes ls cams
D) TUNING THE MOST IMPORTANT PART, Get it all together w what i said to use and go have it tuned by a hondata dealer
E) Consider a Vtec head LS head flow like shit and if u have it apart any way slap a B16 head on it
F) FUCK THE NA SHIT and run BOOOOST on the LS add pistons and rods and hondata. inj and turbo and POOF 250+ whp
if u need any help i cmake and sell turbo kits for 4g's and sell hondata
MKS
12-10-2002, 02:13 PM
do u ship stuff to the uk dropshop hehe weeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
dropshop
12-10-2002, 02:16 PM
i sure can
mellowboy
12-10-2002, 02:20 PM
Originally posted by dropshop
F) FUCK THE NA SHIT and run BOOOOST
you DID NOT JUST GO THERE!!!
:mad: :finger:
F) FUCK THE NA SHIT and run BOOOOST
you DID NOT JUST GO THERE!!!
:mad: :finger:
mellowboy
12-10-2002, 02:22 PM
Originally posted by red4thgencivic
umm I think the WRX and the celica GTS both run like 11.5:1 on 91 octacne so you should be alright.
Thats a lil too high of a compression for a celica and wrx man. Anyways i don't know about 91 octane since we run 93 or 94 here. 12:1 is good but any higher u better be running 100 plus.
umm I think the WRX and the celica GTS both run like 11.5:1 on 91 octacne so you should be alright.
Thats a lil too high of a compression for a celica and wrx man. Anyways i don't know about 91 octane since we run 93 or 94 here. 12:1 is good but any higher u better be running 100 plus.
MKS
12-10-2002, 02:26 PM
oh cool ..
rekkon my little 1.4 could take a turbo ??
getting stuff like that over here in the uk is near impossible
rekkon my little 1.4 could take a turbo ??
getting stuff like that over here in the uk is near impossible
dropshop
12-10-2002, 02:26 PM
Originally posted by mellowboy
you DID NOT JUST GO THERE!!!
:mad: :finger:
um i hate to break it to you but boost= far more power than N/A
I KNOW its sad for you to relaize this but it is the truth
:flipa: :D
hehehe
a high comp ZC isnt gonna get any where near my turbo zc
SHIT i have 176 FT LBS @ 4800 and my kit costs under 2600
try gettin that w NA
you DID NOT JUST GO THERE!!!
:mad: :finger:
um i hate to break it to you but boost= far more power than N/A
I KNOW its sad for you to relaize this but it is the truth
:flipa: :D
hehehe
a high comp ZC isnt gonna get any where near my turbo zc
SHIT i have 176 FT LBS @ 4800 and my kit costs under 2600
try gettin that w NA
dropshop
12-10-2002, 02:29 PM
Originally posted by MKS
oh cool ..
rekkon my little 1.4 could take a turbo ??
getting stuff like that over here in the uk is near impossible
low boost turbo yep
like 8 psi
as long as its Fuel injected
oh cool ..
rekkon my little 1.4 could take a turbo ??
getting stuff like that over here in the uk is near impossible
low boost turbo yep
like 8 psi
as long as its Fuel injected
Bleebdat
12-10-2002, 02:30 PM
Its all about tuning and fuel. The new celica is @ 11.5, and so is the matrix. SCC took that engine and put a low boost(6psi) turbo on it. Just depends on your pocket book.
MKS
12-10-2002, 02:33 PM
nope sadly she is carbed :(
mellowboy
12-10-2002, 02:33 PM
Originally posted by Bleebdat
Its all about tuning and fuel. The new celica is @ 11.5, and so is the matrix. SCC took that engine and put a low boost(6psi) turbo on it. Just depends on your pocket book.
Are you talkin about stock?
Its all about tuning and fuel. The new celica is @ 11.5, and so is the matrix. SCC took that engine and put a low boost(6psi) turbo on it. Just depends on your pocket book.
Are you talkin about stock?
mellowboy
12-10-2002, 02:38 PM
Originally posted by dropshop
um i hate to break it to you but boost= far more power than N/A
I KNOW its sad for you to relaize this but it is the truth
:flipa: :D
hehehe
Yadda yadda. I know that already but that don't mean shit in the streets:D I know this guy with a white 92 hatchie all motor be kickin turbo hondas left and rite. OH and hes only runnin low 13s not fully built. I can tell you that they'll give you a good run.:) Either way its all about tuning!:D
um i hate to break it to you but boost= far more power than N/A
I KNOW its sad for you to relaize this but it is the truth
:flipa: :D
hehehe
Yadda yadda. I know that already but that don't mean shit in the streets:D I know this guy with a white 92 hatchie all motor be kickin turbo hondas left and rite. OH and hes only runnin low 13s not fully built. I can tell you that they'll give you a good run.:) Either way its all about tuning!:D
red4thgencivic
12-10-2002, 03:32 PM
Originally posted by mellowboy
Are you talkin about stock?
Yes believe or not the new celica GT-s runs 11.5:1 compression completely stock! If you still think I'm wrong look it up. The WRX runs like 11.3:1 or something I can't remember right off you have to run premium grade fuel in both cars or they will knock like hell. BTW the matrix and GT-s engine is the same thing. I say go for it, generally you would like to have lower compression if you're going to turbo it but as long as you're not running much boost then it should be alright. Oh yeah 91 octane?? Must be on the west coast cause we get 93 over here.
Are you talkin about stock?
Yes believe or not the new celica GT-s runs 11.5:1 compression completely stock! If you still think I'm wrong look it up. The WRX runs like 11.3:1 or something I can't remember right off you have to run premium grade fuel in both cars or they will knock like hell. BTW the matrix and GT-s engine is the same thing. I say go for it, generally you would like to have lower compression if you're going to turbo it but as long as you're not running much boost then it should be alright. Oh yeah 91 octane?? Must be on the west coast cause we get 93 over here.
Marc-OS
12-10-2002, 05:48 PM
I remember talking to a guy on another board that was running 13:1 on high octane pump gas in his d16z6. It's all in the tuning.
kris
12-11-2002, 04:21 PM
:o I know of someone running a 10.77 n/a on a D15. :finger:
QuickSilverEF9
12-11-2002, 04:54 PM
Bisimoto huh? Yeah his engine is amazing :)
kris
12-11-2002, 04:59 PM
Originally posted by QuickSilverEF9
Bisimoto huh? Yeah his engine is amazing :)
Yup. :D
Bisimoto huh? Yeah his engine is amazing :)
Yup. :D
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