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11-02-2012, 10:47 AM
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#1 (permalink)
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Seasoned Rider
Join Date: Oct 2012
Location: North West
Posts: 49
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Compression ratio on a 103ci
I am going to do a 96-103ci conversion, SE flat top pistons, does anyone know the compression ratio? If it is less than 10:1 I will use stock head gasket. Thanks!
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11-02-2012, 12:11 PM
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#2 (permalink)
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IronButt
Join Date: Jan 2003
Location: On my way to banned camp
Posts: 1,212
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The piston is the main factor in determining compression so what ever they advertise the piston as, it'll probably land in that area. There are some other things that can change compression ie: heads, head gaskets, etc.
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11-03-2012, 09:41 AM
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#3 (permalink)
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Seasoned Rider
Join Date: Oct 2012
Location: North West
Posts: 49
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These are SE flat top pistons, some ppl said 9.5:1, the SE catalogue didn't specify. Should I get the SE high compression head gasket to be safe?
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11-03-2012, 10:28 AM
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#4 (permalink)
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Lifetime Premium
Join Date: Jun 2008
Location: IL.
Posts: 6,458
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Quote:
Originally Posted by alexlivetoride
These are SE flat top pistons, some ppl said 9.5:1, the SE catalogue didn't specify. Should I get the SE high compression head gasket to be safe?
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Use a .040 or .030 gasket.
What cam you gonna use?
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11-03-2012, 11:06 AM
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#5 (permalink)
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IronButt
Join Date: Nov 2008
Location: Jacksonville Beach, Fl.
Posts: 682
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SOMETIMES....Some people need to pay someone to do the work.......just sayin.....
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11-03-2012, 12:49 PM
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#6 (permalink)
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IronButt
Join Date: Jan 2003
Location: On my way to banned camp
Posts: 1,212
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Quote:
Originally Posted by Thundermug
SOMETIMES....Some people need to pay someone to do the work.......just sayin.....
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I think I read another post by the OP that said, in addition to getting some warranty work done to the bottom end, he was going to do a big bore kit. Sounded like he is having a bit of trouble with the dealer that's doing the work and he's trying to get his shopping list filled.
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11-04-2012, 11:03 AM
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#7 (permalink)
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Seasoned Rider
Join Date: Oct 2012
Location: North West
Posts: 49
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Wood TW-555 and fuelmoto PRs, thanks!
Quote:
Originally Posted by strokerjlk
Use a .040 or .030 gasket.
What cam you gonna use?
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11-04-2012, 11:56 AM
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#8 (permalink)
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Lifetime Premium
Join Date: Jun 2008
Location: IL.
Posts: 6,458
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Quote:
Originally Posted by alexlivetoride
Wood TW-555 and fuelmoto PRs, thanks!
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If your getting a kit from Jamie , get a cometic .030
If the dealer has a .040 then that is fine also.
Just done use there .054-.060 head gaskets
__________________
07 ULTRA
SE 120Rxtra
Light travels faster than sound. This is why some people appear bright until you hear them speak.
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11-04-2012, 12:39 PM
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#9 (permalink)
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Seasoned Rider
Join Date: Oct 2012
Location: North West
Posts: 49
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Thanks man! I only bought the cams, PRs and Tmax autotune from Jamie, no head gaskets. Do you have the part number for the 0.040 gasket? What's the advantage of getting a thinner 0.030 gasket? More compression? If I use a thicker or thiner gasket, I assume the valve adjustment is more or less, correct?
Quote:
Originally Posted by strokerjlk
If your getting a kit from Jamie , get a cometic .030
If the dealer has a .040 then that is fine also.
Just done use there .054-.060 head gaskets
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