Hey. i'm building a klx 138 or 143 engine but i'm not quite sure what to go for?
Many thanks. Tommy
Many thanks. Tommy
KLX Engine
layzell167
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Hey. i'm building a klx 138 or 143 engine but i'm not quite sure what to go for?
Many thanks. Tommy
Many thanks. Tommy
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6,092 Posts
I know my 143 with stroker had nothing on a 138+R.
I would build the +R motor.I would go with the 178scut kit over the 138 though if you dont have cc limitations.
I would build the +R motor.I would go with the 178scut kit over the 138 though if you dont have cc limitations.
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Yea but the +R will out rev to the moon.
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KI6HNB said:
There are many ways to get that kind of hp and keep it reliable. Both the Kitaco 143 SE kit or the Takegawa +R kit (178) can make mid teens in terms of hp. There a few companies that sell big bore kits like CHP, BBR, TB,etc. but without some form of race head, you are gonna have a difficult time getting to your goal of 14hp. ( you can port the stock head but will still be limited)
As for the clutch. It isnt the auto that will have the issue. it's providing enough spring pressure and still being able to shift is the problem with the auto.
If you install springs to handle that kind of hp. you will find it most difficult to shift. ( my experience )
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^^ 138 +R is that the takegawa superhead? And the stroke up kit, does that stroke it up to 155?
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Yes its the takegawa superhead +R(roller rockers).It makes it around a 150 I believe.A 155cc motor is a 143 top end with the 55mm stroker crank.
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this 134 kit, is this kit good on the bottom end, i have a 88 superhead and its all top power.
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