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Don't forget the boost bottle :evil:

 

Ok, I'm joking they do nothing at all.

 

Now that you mention that, you better watch that bottle of yours doesn't come out again. You were sucking air because of that. Keep an eye on it, and just push it in and make sure it is in when you stop when riding.

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+4 timing will only add hp on the bottom to lower mid.

Get a port job for the type of riding you do, that will determine how your power curve will look, like bottom to mid range power for MX or top end for drags... and the pipes to compliment the porting. like pro circuits for mx/trails and Shearers for drags...

There is a lot of engine builders, if I would get a MX/trail port now in the states I would send my cylinders to Passion Racing for a 12 port mx porting, stock stroke MX 12 has the broadest power band and can deliver 70-75hp..

Give Jim @ Passion Racing engines a call and talk to him, he is a great guy..

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  • 5 months later...

Your going to probably have to get a 4mil. with all the upgrades to go with it... I have a true and welded crank wiseco pro-lite pistons, Agressive trail porting, Toomey T-5 pipes, Pro-Design cool head with 20cc domes, stock jetted carbs open air box ported stock reed cages with vito's dual stage carbon tech reeds +4 timing and I make around 50 I could tune it a little more and get pod filters and maybe get 55 on a good day with race gas so I hope that give you an idea... and I've spent i think around $2000-2500 on the motor but Ive also replaced some bearings and clutch plates and paints and a few billet dress up parts

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  • 1 month later...

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