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| Best stock head and cam combo http://ducatittandf1.com/viewtopic.php?f=25&t=10924 |
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| Author: | DarmahDave [ Sat Jul 26, 2014 7:04 pm ] |
| Post subject: | Best stock head and cam combo |
So, I will be picking up a 650 SS engine next week for my Pantah racer. I was wondering what would be the best stock head and camshaft combo with my current parts stash. I have 1981 500 SL heads and cams as well as the 1986 650 SS heads and cams. I have taken a look at the bikeboy website and to me it looks like the 500 SL cams might be a little hotter than the 650 cams. Would there be any advantage to running the 500 cams in the 650 heads? Or are the heads exactly the same and I could just put the 500 heads on the 650? Option #3 would be to just leave everything alone because any gains would be minimal and not worth the effort. I also saw in another post that a guy was running epm mag wheels. Are these a straight bolt in affair or would custom spacers need to be made up? Thanks Dave |
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| Author: | graeme [ Sat Jul 26, 2014 7:28 pm ] |
| Post subject: | Re: Best stock head and cam combo |
You can use two front cams from a later vee twin, I used 900ie cams and I believe the ST2 cams are also good. You get more lift and duration than 500 cams and the 650 Ally cams are very mild. If you use 2 x 900 ie front cyl cams you will to re mark the rear cams position and dial them in properly. Graeme |
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| Author: | 618F1 [ Sat Jul 26, 2014 7:51 pm ] |
| Post subject: | Re: Best stock head and cam combo |
I am with Graeme. It is not worth the effort to swap the 500 cams into the 650 heads --- very minor diff --- if any. But 900 cams will fit without valve-to-valve contact; I cannot say about valve-to-piston clearance. Do remember you are going from 500 to 650cc, so that will help a lot. MikeV |
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| Author: | DarmahDave [ Sun Jul 27, 2014 11:47 am ] |
| Post subject: | Re: Best stock head and cam combo |
Ok, I will keep an eye out for some 900 cams. I do not see any reasonably priced at the moment. I will probably end up having to buy two sets to get two fronts. Dave |
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