I will add this - usually if you do install too much cam for the rest of your motor you will kill your bottom end some. But when I rebuilt my engine the first time I ordered the JE 366 10.5:1 piston and it took 4 weeks to get here. While I was waiting for the piston to arrive I had the head ported, the larger valves installed, and the .430" Webcam installed and put it back together with the stock piston on the stock bore and it ran great! It revved really fast and would keep the revs up easily. Then when the JE piston came I took it back apart and installed that. The piston helped, but didn't make as much difference in power as all the head mods. So if anything, the big cam didn't hurt my power at all with the stock piston, it helped it. I did already have the pipe and filter, though.

 

Bore-jobs (save big bore kits) really don't do a whole lot to increase power, anyway, only very small gains. The gains are all coming from higher compression and a better seal with the freshly honed cylinder walls and new piston and rings.

 

your saying buying a big bore kit saze 500cc isn't going to do anything. And after doing alittle reasearch on webcams, with that much lift your not going to get that great of performance out of it unless you port polish and cut your valve seats. you have to match what your doing to match what you want, a simple cam isn't going to do anything....

 

<div class="FTQUOTE"><begin quote>Originally posted by: beefy46172

Bore-jobs (save big bore kits) really don't do a whole lot to increase power, anyway, only very small gains. The gains are all coming from higher compression and a better seal with the freshly honed cylinder walls and new piston and rings.</end quote></div>

 

I'm guessing you've never built many motors? I don't argue the fact that Webcams have a whole lot of lift, but that alone is not going to do a whole lot of anything, it will actually hurt you if the motor is not built for that much lift. if your vavles are working there *** off and nothing else is going on, it is wasted energy

and Save big bore kits????

yes you get your performance from a fresh cylinder and higher compression, but that alone is not going to do a whole lot by itself either....... will definately help if your motor is worn out.....

when you rebuild a motor you do everthing to compliment the other parts. With the JE pistons you will get more horsepower over wiseco becuase of the wieght diffrence, but proabably not enough for you to notice just riding it.
But when you port and polish your head, and intake and exaust thats were your going to get your performane for the most part...

 

ANd sorry the webcam spring kit isn't Heavyduty springs, they are the same legnth as stock, a heavy duty spring is longer than a stock spring which would included having to do machine work on the head, so I was wrong on that aspect.

 

Alright, fine, I give up, you win. [img]i/expressions/face-icon-small-cool.gif[/img]

 

<div class="FTQUOTE"><begin quote>Originally posted by: pmcc37

your saying buying a big bore kit saze 500cc isn't going to do anything. </end quote></div>

I think what beefy was saying is that going from 348cc to 366cc is not going to add a lot of HP just because of the increase in size. A lot of people call the 366 kit a "big bore" when technically it's not really a BIG bore. Now when you increase the piston to a true big bore like the 446, you are really adding HP then, but then most of that power comes from the +10mm stroked crank and not the bigger piston.

 

<div class="FTQUOTE"><begin quote>Originally posted by: pmcc37

ANd sorry the webcam spring kit isn't Heavyduty springs, they are the same legnth as stock, a heavy duty spring is longer than a stock spring which would included having to do machine work on the head, so I was wrong on that aspect.</end quote></div>

I don't know if they were heavy duty or not, but the Webcam valve springs worked great for several years in 2 of my Warriors! I think you are scared to admit that Hotcams are wimpy cams!

 

<div class="FTQUOTE"><begin quote>Originally posted by: Raptor450
I think what beefy was saying is that going from 348cc to 366cc is not going to add a lot of HP just because of the increase in size. A lot of people call the 366 kit a "big bore" when technically it's not really a BIG bore. Now when you increase the piston to a true big bore like the 446, you are really adding HP then, but then most of that power comes from the +10mm stroked crank and not the bigger piston.</end quote></div>
That's exactly what I was trying to say. Thanks!