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Old 28 February 2007, 14:46   #11
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Country: UK - England
Make: XS
Length: 6m +
Engine: Suzuki DF140
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Thanks Fred. Thought as much.
A few more if I may.
Am getting 140lb as standard on a pull start.
Ive got a spare head that I can mod.
Do you have a min value for chamber volumes ???
And is an original gasket ok to use?

Also what think of a Wiseco pistons. Worth the expense ?

Thanks Again Fred
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Old 02 March 2007, 07:20   #12
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Country: Russia
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Guys,
Thanks a bunch for the info, was engulfed in snowmobile madness winter has come to Russia only in February. Will С what we can do but should wait until spring to give it a go.
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Old 03 March 2007, 08:46   #13
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the thing with clipin the head is, the squish band area has to stay positive,
so not to interfere with the flaim front.

the squish band is on the edge of the head chamber, cuzz you got a slight dome
on that piston it becomes imporant (flat top pistons are way easier ) .

when the pistons is at TDC the distance between the piston crown from the out side edge , to the top of the head needs to be .025min should grow to .035 as it moves to the chamber.

the hole idea is to make the chamber smaller but keep the squish band the same
OR it WILL BURN DOWN.

24-22cc's light that LL100 , head gasket be just fine, do not over torque, just like the book says, a dab of thin oil on the threds and torque to spec.

let me know if your followin any of this.
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Old 10 March 2007, 07:43   #14
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settin the squish clearances in this head, a cut has been made over the deck surface of the head, .150", then the squish clearances are put back.

on this Race Moda, the piston crown pulls out of the block, past the head gasket and in to the head
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Old 10 March 2007, 14:29   #15
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Wow. I never would have believed you could deck the head that much, and get away with it.

Thanks for the pic.
I probably wont be that brave to start with.

Any Idea of the copmression ratio you end up with ???

Thanks again Fred
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Old 11 March 2007, 10:07   #16
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needs 110oct. min. about 190lbs.psi- 200lbs.psi , stock is about 120 -125 lbs. psi.
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Old 19 May 2007, 06:40   #17
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this is my copy of the OMC CC FT 19s, F3 race Moda ( not a motor).
makes about 104hp a 6700rpms pulls to 8000rpms @ just under 100hp

thinkin i should paint it white, buffin gets old fast.
all that could be New is,
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Old 20 May 2007, 06:58   #18
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ya can, yes you can hit it with NOS, you can fog it in the air box, a high amount of fog can and has froze the reeds open, and the cyl shuts down, you can plum it behind the reeds to keep that from happenin , NOS is Oxygen, with out an enrichment fuel , soon as you hit the button it Blowsup, Nos and enrichment hit at the same time. Nos wakes it up
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Old 17 July 2007, 07:15   #19
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hears an udder one, got 12 venturies on it,

check the fly wheel
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Old 17 July 2007, 07:32   #20
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some more

and another one
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