Yosh stage 1 cams or web cams

[gtrpimp76]

did anyone do the Yosh Cams or even the Web Cam mod? How difficult is the install and what special tools should I acquire for the cams/adjustments/degree/etc? I hear around a 8-10 rwhp increase from changing the cams?

 

[ks-waterbug]

Those numbers sound about right! Not sure if they index those cams or not....... Need someone with real world experience to post up. I can't help you there; the Cheeseman did mine!

 

[mountainmotor]

Your signature says turbo coming this year .

Alot of work and money only to put the stock cams back in for the turbo engine .

 

[Got-Busa?]

I'm with mountainmotor on this.

If you plan to TURBO, you will just have to change back to stock. If not, you will loose A LOT of power with a basic TURBO application. Otherwise I would have the Yosh cams in my bike right now....

 

[gtrpimp76]

Very interesting. Why is it better to run stock cams vs webs/yoshi/megas with turbo applications? Does it have to do with the ignition timing, etc??

 

[CoolBUSA5454]

No need for cams with turbo. It makes all the power for you.

 

[mountainmotor]

Very interesting. Why is it better to run stock cams vs webs/yoshi/megas with turbo applications? Does it have to do with the ignition timing, etc??

No , it has to do with valve overlap and trapping the intake charge not blowing some of the mixture out of the exhaust port .

Without going into it much , basically in the engine world the Busa comes with what would be called turbo cams . The intake has 20 degree's more duration than the exhaust cam .

Just throwing some numbers out .

Destroked 540 Chevy " 475ci " running roller cam with 280 duration intake 280 duration exhaust measured @ .040 lift with in& ex lobes at 112 would benefit from a cam like 280 intake , 270 exhaust with the intake lobe center angle set higher than the exhaust ,say 110 /108 when boosted .

Roots style supercharger a different approach

Most V-8 streeter auto engines run more cam duration on the exhaust in large part due to the rather poor exhaust you can run on them in comparison to the bikes .

Yes you can run the Yosh cams with turbo but they will need to be set with very high LCA's to shorten the overlap and higher boost to compensate .