Engine work
- Thread starter GB2225
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I’d go with lightened stator before any engine work on a V2. Next would be porting heads. Than ti conrods or higher compression pistons. At that point you’ll need to tune the bike to get any real benefit. Are you racing it?
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Also on the cams the bigger problems are the valve sizes to match the different piston size. The exterior dimensions and bolts all match up from the 899 & 1199 but you have a more aggressive cam profile and larger valves in the 1199. The 1299 head actually uses the same valve sizes but if you go with the 1299r it's slightly bigger. If you coming from an 899 best ROI is to swap an 1199 engine as you can find them reasonable today.
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So I was just looking into this, I bought some 1199 cams to compare to the V2 cams. Since the cams have to come out for a valve adjustment I thought it might be worth the upgrade. If anyone has V2/1199 cam profile spec I'd like to see them. Just eyeballing them there is more duration and about 1.5mm more lift than the V2 cams.
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I looked up the part numbers and the 959 & V2 cams are the same Part numbers. Also the 1199 & 1299 exhaust cams are the same, other than that I have not looked into any other compares.
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Helpful, we will need to build a cross reference. Really need to know the cam specs (lift, duration for exh and intake, etc.). @baggerman did you do this for the engine you where building?
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Map the lobe profiles with a degree wheel and dial indicator
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I swapped the 30 tooth V2/959 cam gears over and installed the cams, started the bike and it all sounded normal. I'll update after I get the bike tuned to see if it's a worthwhile upgrade or not.
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get a bigger motor simples and cheaper.
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It's my race bike, not a bike to go get coffee on. It fits in a class, and riding a slow bike fast is a hell of a lot more fun than riding a fast bike slow.
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you are not the OP who said what I quoted "but no actual racing"
So your needs are different to his.
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My apologies, I didn't even look at the quote. I thought it was a comment meant for me.
No but I will when I reassemble. I'm thinking ultimately the 2025 cams will be of advantage, too bad I'll have to wait for a used set.