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can 13.7 comp be used for daily if tuned?

Old Aug 31, 2009 | 05:02 AM
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Default can 13.7 comp be used for daily if tuned?

is 13.7 comp to high for daily/ ill be using race gas mixed or just race gas alone. i dont drive the car everyday just on weekends..i have cousin with a k24/k20 with 15.7 i belive and he drove his car in the street..not everyday use though..i just want to know if anyone with a b series drives their car with that high of a compression
Old Aug 31, 2009 | 05:39 AM
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Default Re: can 13.7 comp be used for daily if tuned?

its all in the tune. with a good tune you will be fine on a race gas mix
Old Aug 31, 2009 | 07:19 AM
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Default Re: can 13.7 comp be used for daily if tuned?

You'll need a LOT of tuning with that high of a CR. If things like your barometric and intake air temp corrections aren't really well tuned, you'll be out of your very small safety zone very fast. Basically if it's not very thorough, you can start knocking when the weather changes.
Old Aug 31, 2009 | 07:27 AM
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Default Re: can 13.7 comp be used for daily if tuned?

On race mix or straight race gas you will be fine..You could even consider E85 if you have enough injector to handle the higher fuel demand needed.
If you are going to run anything less though you will have to pull timing to help prevent knock/detination. What are you using for management?
Old Aug 31, 2009 | 12:57 PM
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Default Re: can 13.7 comp be used for daily if tuned?

Originally Posted by jdmontheway
i just want to know if anyone with a b series drives their car with that high of a compression
I drive my 13:1 b-series every weekend. I tried to get away with the race gas/pump gas mix at first but it started to ping. I only run straight 110 octane now.
Old Aug 31, 2009 | 03:47 PM
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Default Re: can 13.7 comp be used for daily if tuned?

Originally Posted by BuddyClubCivic
I drive my 13:1 b-series every weekend. I tried to get away with the race gas/pump gas mix at first but it started to ping. I only run straight 110 octane now.
im using an s300.. is it colder where you live? like mountin

Last edited by jdmontheway; Aug 31, 2009 at 03:53 PM.
Old Aug 31, 2009 | 07:33 PM
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Default Re: can 13.7 comp be used for daily if tuned?

keep dynamic compression in mind. What cams you run will play a huge role in how much static compression you can run.
Old Sep 2, 2009 | 06:52 AM
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Default Re: can 13.7 comp be used for daily if tuned?

i want to run pro 3's skunk 2
Old Sep 2, 2009 | 07:17 AM
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Default Re: can 13.7 comp be used for daily if tuned?

more info on the setup..? head, rods, crank...ETC?
Old Sep 2, 2009 | 03:37 PM
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Default Re: can 13.7 comp be used for daily if tuned?

okay... h22a,sleeved,13.7 pistons,eagle rods,sk pro 3 cams,sk2 valvetrain,h.comp valves,greddy belt,knife edged crank,rmf all motor header,adj.cam gears,s300,mixed with race gas,750 rc injectors,aem fuel rail,adj.regulator,msd dizzy,ngk plugs,electric cut out..tuning with open headers but still running cat for emissions...


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