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#1
12-10-2002, 07:52 AM
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highest compression ration on Pump gas
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 ?
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2012 VW Golf 3 Door Automatic (Company Car)  2011 VW Golf Wagon 5 speed (Company Car) 2010 VW Jetta 2.5 Automatic (Company Car) 2009 VW City Jetta 5 Speed (Company Car) 2009 VW GLI 6 Speed (Company Car) 2008 VW Jetta 2.0T 6speed (Company Car) 1999.5 Audi A4 Quattro Sport 1.8t (Chipped 1.0 bar) Sold 1990 CRX Si (Built B17a) - Stripped and Crushed 1988 CRX Si -- Stolen 1990 Civic Cx -- Sold 1990 Civic Si -- Parted 1989 Civic dx -- Sold 
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#2
12-10-2002, 10:18 AM
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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.
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Why can't money come easier? ok so i had two civic hatchbacks, i totaled one because i wasn't paying attention, the other one i got ran into a creek by an old lady asleep at the wheel, then i got a CRX was being retarded hit a deer at 90 and flipped, so now i drive a 1992 celica GT and i love it, done with being stupid, this one will not be wrecked.
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#3
12-10-2002, 01:05 PM
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full msd sci intiotion thats priceless
 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
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hi im jon and im addicted to boost
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#4
12-10-2002, 03:13 PM
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do u ship stuff to the uk dropshop hehe weeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
__________________
1989 Toyota Supra 3.0i Turbo 150mph I think I'm nuts Custom S/S Exhaust 5" Tailpipe K&N Induction kit Bailys Piston Dump Valve (WOOSH) Wategate Shimmed by 5mm ummm boost 
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#7
12-10-2002, 03:22 PM
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#8
12-10-2002, 03:26 PM
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oh cool ..
rekkon my little 1.4 could take a turbo ?? getting stuff like that over here in the uk is near impossible
__________________
1989 Toyota Supra 3.0i Turbo 150mph I think I'm nuts Custom S/S Exhaust 5" Tailpipe K&N Induction kit Bailys Piston Dump Valve (WOOSH) Wategate Shimmed by 5mm ummm boost
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#9
12-10-2002, 03:26 PM
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I KNOW its sad for you to relaize this but it is the truth  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
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hi im jon and im addicted to boost
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#10
12-10-2002, 03:29 PM
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Quote:
like 8 psi as long as its Fuel injected
__________________
hi im jon and im addicted to boost
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#12
12-10-2002, 03:33 PM
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nope sadly she is carbed
__________________
1989 Toyota Supra 3.0i Turbo 150mph I think I'm nuts Custom S/S Exhaust 5" Tailpipe K&N Induction kit Bailys Piston Dump Valve (WOOSH) Wategate Shimmed by 5mm ummm boost
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#13
12-10-2002, 03:33 PM
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#14
12-10-2002, 03:38 PM
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Yadda yadda. I know that already but that don't mean shit in the streets 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!
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#15
12-10-2002, 04:32 PM
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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.
__________________
Why can't money come easier? ok so i had two civic hatchbacks, i totaled one because i wasn't paying attention, the other one i got ran into a creek by an old lady asleep at the wheel, then i got a CRX was being retarded hit a deer at 90 and flipped, so now i drive a 1992 celica GT and i love it, done with being stupid, this one will not be wrecked.
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