details on my build

[cobeswgcc]

2009 ds-450
rossier full pipe, web cams, rossier headwork, JE 13:1 piston, cylinder replated and bored, modquad intake, removed air box, new stock valves, valve springs, recut valve seats, pc5 and auto tune, 110 race fuel
still waiting on pc5
wont be tuned on a dyno (not one in the area) for atvs
im just gona tune it with afr guage
but im confident it should make 55 hp or so

[xrider77]

You might be hard up to get the 55 HP but I'm betting that you will break 50. Maybe 50-52. Careful with web cams, alot of their grinds actually hurt the performance on the DS, depending on which grind you get.

[fast rap]

Quote: Originally Posted by xrider77

You might be hard up to get the 55 HP but I'm betting that you will break 50. Maybe 50-52. Careful with web cams, alot of their grinds actually hurt the performance on the DS, depending on which grind you get.

what cams are good for the ds than?? hot cams!!

[xrider77]

The best cams your gonna get are gonna be your cusrom ground Cams from engine builders such as Rossier, DASA, or Ron woods. Charlie Rossier ran dyno's on 4 or 5 different grinds of cams from web cams and they all lost power. I'd stick with stock or engine builders.

[hcomras]

itll be hard to get 55rwhp with no dyno tune either. like xrider said prob a solid 50-52 with the head work and piston and cam, but id get a more reputable cam like ron woods or just use the exhaust cam if a big money for a custom grind is out of the question.

[cobeswgcc]

it is rossiers cam grind but im a dealer for webcam so i got it from them

[cobeswgcc]

im gona take the exhaust cam from the 09 and put it in his new 08 w/ the motoworks slip-on and fmi

[CANAMracerdad]

Does anybody know what lift and duration the Rossier cams are. What dyno'd the best?
We were planning to send our cams to Webb and have them custom ground.

[xrider77]

I'll look into the lift duration numbers and post ASAP. I'm gonna have alot of left over stock cams and other internal engine parts after the race motors are done so if anyone needs anything PM me,

Be careful with getting your stock cams reground, they aren't the strongest units out there. There have been some stock cam failures, which is why you see rossier and Ron woods offer the full cam for the DS without the Core swap that most others have. The billet ones are far stronger and more reliable.

[cobeswgcc]

when i talked to webcams they said they wouldnt hard weld the stock cams all they offer is new
and the cams rossier has had the best numbers with the research he did
intake .432 lift 269 duration
exhaust .380 lift 280 duration
he found the stock exhaust cam was to big
and the intake port also to big