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TECHNICAL => ALL MOTOR TALK => Topic started by: SLEEPERBUSA on April 13, 2012, 09:39:50 PM

Title: Another compression question
Post by: SLEEPERBUSA on April 13, 2012, 09:39:50 PM

Are the new JE 14.5 pistons to much compression for a pump gas street motor?
Stock deck head and block.

Title: Re: Another compression question
Post by: fvance on April 14, 2012, 10:10:02 AM

Probably

Title: Re: Another compression question
Post by: SLEEPERBUSA on April 14, 2012, 10:43:59 AM

My old Gen I ran 14:1 on Super, but the GENII is a full time streetbike, so I don't wanna have to mix anything if i'm out somewhere.

Title: Re: Another compression question
Post by: Johnnnycheese on April 14, 2012, 09:21:56 PM

gen 2 is a pickey beast not the same as a gen one
 and yes your bearing are ordered :thumb:

Title: Re: Another compression question
Post by: SLEEPERBUSA on April 14, 2012, 10:32:26 PM

Quote from: Johnnnycheese on April 14, 2012, 09:21:56 PM

gen 2 is a pickey beast not the same as a gen one
 and yes your bearing are ordered :thumb:

Thanks. I appreciate that.

What do you mean pickey???

Title: Re: Another compression question
Post by: speedduck on April 15, 2012, 06:08:19 AM

14.5 needs wild cams to work with pump gas, you need to loose some working pressure. I had a melted pistons using 1:15 with .445/244 in and .415/244 ex. Maybe some 250-254 cams could do it. And that is with full throttle on a mile.

Title: Re: Another compression question
Post by: Johnnnycheese on April 15, 2012, 12:45:21 PM

more pickey on the map

Title: Re: Another compression question
Post by: SLEEPERBUSA on April 15, 2012, 12:58:52 PM

That's not a problem. I know a guy that can get the map right.

Title: Re: Another compression question
Post by: fvance on April 15, 2012, 06:47:12 PM

Who is that?? :hys:

Title: Re: Another compression question
Post by: SLEEPERBUSA on April 16, 2012, 04:07:46 PM

That guy up there in that Kawasaki jacket.

Title: Re: Another compression question
Post by: fvance on April 16, 2012, 04:32:53 PM

Oh him, I think I know him. :tu: