 cam swap
|
Joined: Oct 2012
Posts: 459 Likes: 1
Adjunct
|
OP
Adjunct
Joined: Oct 2012
Posts: 459 Likes: 1 |
I'm finally getting around to putting the 790 cams from 2003 Speedy into my 06 865. I've always read that they were a direct swap, check valve clearances, and adjust as necessary . I just want to double check with you guys. The 790 cams are out of the bike but I have not removed the 865 cams yet. I do have a TTP Stage 2 Firestarter on the way and Barnett green springs to install as well.
2006 865 Neon Blue/Jet Black Speedmaster,790cams, TTP Stage 2 Firestarter, Epco Exhaust with 10.25" Samson Vrod baffles, UNI pods with 40 pilots, 150 mains,Thruxton needles, 3 turns out.
|
|
|
Re: cam swap
|
Joined: Jan 2008
Posts: 1,170 Likes: 14
Learned Hand
|
|
Learned Hand
Joined: Jan 2008
Posts: 1,170 Likes: 14 |
the cams are directly interchangable. you will have to adjust clearances.
do you have the manual or dinqua's guide? it will help a lot. especially in locating the correct timing marks. there is also a little tool you will have to gin up for the cam drive gear.
and if your new cams do not have the anti backlash gears on them you will need to swap them off the old cams and preload the springs.
05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter
|
|
|
Re: cam swap
|
Joined: Oct 2012
Posts: 459 Likes: 1
Adjunct
|
|
OP
Adjunct
Joined: Oct 2012
Posts: 459 Likes: 1 |
Thanks.I have both the Haynes manual and the factory manual. The 790cams I took out of my old 03 Speedy which I have previously adjusted valves on before so I am familiar with the process and have all of the necessary tools. I just wanted to be certain that the cam swap was straight forward, pull 865 cams, install 790 cams, measure valve clearances and adjust as needed.
2006 865 Neon Blue/Jet Black Speedmaster,790cams, TTP Stage 2 Firestarter, Epco Exhaust with 10.25" Samson Vrod baffles, UNI pods with 40 pilots, 150 mains,Thruxton needles, 3 turns out.
|
|
|
Re: cam swap
|
Joined: Apr 2007
Posts: 3,059 Likes: 8
Loquacious
|
|
Loquacious
Joined: Apr 2007
Posts: 3,059 Likes: 8 |
12 Rocket Roadster
03 Bonneville America
69 BSA Firebird Scrambler
73 Yamaha TX 750
|
|
|
Re: cam swap
|
Joined: Feb 2008
Posts: 2,671 Likes: 15
Loquacious
|
|
Loquacious
Joined: Feb 2008
Posts: 2,671 Likes: 15 |
Aye. Prepare to be impressed.
|
|
|
Re: cam swap
|
Joined: May 2010
Posts: 214
Adjunct
|
|
Adjunct
Joined: May 2010
Posts: 214 |
What is the benefit of swapping them out?
2009 America
|
|
|
Re: cam swap
|
Joined: Feb 2007
Posts: 23,186 Likes: 55
Fe Butt
|
|
Fe Butt
Joined: Feb 2007
Posts: 23,186 Likes: 55 |
The 790 cams have a more performance oriented grinde and the 865 cam is ground to get through emissions testing losing some performance.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
|
|
|
|
|
