Good thread boys. So whats the answer. Which cam provides the best all around power, the best top end, low end etc.. or will it just be a ford vs chevy thing, just opinions. I will be getting new cams and a piston shortly, and would like some help in deciding which setup to use. But remember, they got to like nitrous also. THanks guys, Jed.

 

Oh and guys, no short racing here, just long steep drags, 600 - 1200' I would guess, Thanks again, Jed.

 

viper THEBOM got 95 HP out of a stock bore stock stroke spraying thru a1/a2 cams.

Unless we get an unbias source to dyno compare all the cams, who does not actually sell any of the cams in discussion, comparisons and opinions truly are just a ford vs. chevy thing. but its all about packages too, just swapping one set of cams for another in a given bike is not necesarily all there is to it, but how those cams work with the piston and the porting and all that jazz.

 

My HPR3 cams pull hard & even from bottom the top. This is on my HPR stage III bike (trail/drag). I have not ran Woods or Web cams so I can't comment on those cams. I plan on up grading to the HPR4 cams soon for drag only bike.
Joe

 

oh yeah, don't forget about the cams listed below. they also several other grinds too, but here are a few:

Team-Pami's Cam specs are as follows, same specs for exhaust and intake cams

Sport cam - cast - 270 degree duration - .405 lift
race cam 1 - cast - 276 degree duration - .425 lift
race cam 2 - cast - 282 degree duration - .433 lift
race cam 3 - steel- 284 degree duration - .464 lift
race cam 4 - steel- 290 degree duration - .488 lift


Now how about those HPR cam specs, we have all the others here!

 

Hightower, 95 hp now thats what I'm talking about, daaaang! So in comparing these if you decide to go with a huge cam (big lift and duration), price should ultimatley be the deciding factor?
Granted they all are different by a degree here or degree there, but what the hay if two degrees equals two hundred quid! Are notthe web cams the cheapest?
Now lets throw this in to the deal. On the long climbs, my bike starts out in the high rpm range, but by mid hill has settled into its torque range, say 6500 rpm. Should I be looking into a top end cam that will hopefully help keep me in the high r's, or a mid cam to help pull in the middle to top of the hill? Sounds like me and THE BOM nead to chat, 95 hp I need some alone time now!

 

Ive 2 650s with simular setups. Both with 14/1 pistons and ported with springs and Wood CDIs and Wood exhaust. One of them has the 109s and one with the HP cams. The HP cams have a better low end with no loss of top power. I can launch in 2nd with 25" paddles with it. The 109s have less low end. I had to gear down one tooth to lauch in 2nd. That is from someone who doesnt sell any of the products. I had a 11.5/1 in the DS with the 109s and the low end was really weak to me. The 14 helped alot. I think they both have really got top end but in 300 its all about the start. I like the guys at Woods and they have treated me really good for years. I also have had a really good relationship with HPR. Those guys always call me back and we talk about the quads and products. The RWR guys are smart but I dont think they are on the DS every weekend. Eric and Randall ride em and they understand what Im saying. I can tell Eric what I want and he gives me his opinion. Its usually straight up with what I think. I TRUST THESE GUYS ALOT. I dont work for them or use all of there parts but they are about quality. You have to decide whats best for you and what you want just like the drag pipes. They perform well and HPR makes them but they are not for me. This is just my opinion. Ive got a 3rd DS in which Im putting some 110s in that I got cheap. Ill let you know how it goes. Eric the Lectron I put on my stock 05 is awesome. Worth the money. Later guys Tim

 

[img]i/expressions/face-icon-small-smile.gif[/img] I was waiting for your reply Meaner.

 

WOW!!! A lot of good feedback. It doesn't make the choices any easier now. I guess I'll have to get one of each and try them all to see which I like best LOL.

 

If we unleased our cam specs it would be extremely confusing to everyone. I notice noone has mentioned lobe centers, they are very critical on the Rotax engine. It takes a complete camshaft package to make bottom mid and top end power with quick acceleration to boot. We have over twenty grinds which are basically custom according to riding conditions. HR1 or HR2 etc. are more of a riding condition rather than a specific grind. If you call any automotive cam maunfacturer and order the cam listed in their catalog it will run pretty good but if you talk to a technician and give him the weight of your car, gear ratio, compression,type of heads etc. He can custom grind you a WAY better camshaft for your application than the generic ones offered in the catalog. If someone wants a made for the masses cam that everone else is running then they need a web 109 or wood grind etc. If they want a custom cam for their application thats what we offer with no excuses.

MrHorsepower