different bike after 585 cam install

plong

plong

Member
Changed out to 585 cam wow what a difference. Seat of the pants torque is much better. Went on a 200 mile ride through upstate sc (lots of hills and twistys). I need to weeks Carb but I am very happy with result. Anyone around Greenville area and want to change yours you supply parts and beer I'll supply labor to change for you.
 
BDWB

BDWB

Active Member
Are you getting noise on the decel? I do. A mechanic looked at it and said that is how it is supposed to work. If he were to eliminate the noise it would impact performance. So he said if you want the cam to perform as intended there will be some noise due to excess fuel being pumped in. Does this make sense?
 
BWG56

BWG56

Guru
BDWB said:
Are you getting noise on the decel? I do. A mechanic looked at it and said that is how it is supposed to work. If he were to eliminate the noise it would impact performance. So he said if you want the cam to perform as intended there will be some noise due to excess fuel being pumped in. Does this make sense?
Click to expand...
Rejet the carb if your getting popping or back firing on decel. I just changed my cam to a .585, JP cycles has the jet kit for $45. I only jumped my inter. and main by .002 because the dealer had increased them already when they installed the pipes. I ended up with 33 and 78 for the jets and theres no popping on decel. Adjust the carb to S&S instrustions and you should be good.
I say your mechanic is wrong, its running lean, unless you had it on a dyno and checked your air/fuel ratio.
 
Last edited:
Mickeetwo

Mickeetwo

Guru
plong said:
Changed out to 585 cam wow what a difference. Seat of the pants torque is much better. Went on a 200 mile ride through upstate sc (lots of hills and twistys). I need to weeks Carb but I am very happy with result. Anyone around Greenville area and want to change yours you supply parts and beer I'll supply labor to change for you.
Click to expand...
Nice offer Plong....wish I lived closer. I've wanted to go with the 585 cam, but I have the TP rocker boxes and need to replace them also. I have the 569 cam and was wondering if there was going to be much of a difference moving up to a 585
 
Bowhunter

Bowhunter

Well-Known Member
Likewise on the upgrade to 585, I have been very happy with the new cam, and not a lot of money or downtime of the bike either.
 
Trainguy

Trainguy

Chromeoholic
BWG56 said:
Rejet the carb if your getting popping or back firing on decel. I just changed my cam to a .585, JP cycles has the jet kit for $45. I only jumped my inter. and main by .002 because the dealer had increased them already when they installed the pipes. I ended up with 33 and 80 for the jets and theres no popping on decel. Adjust the carb to S&S instrustions and you should be good.
I say your mechanic is wrong, its running lean, unless you had it on a dyno and checked your air/fuel ratio.
Click to expand...
Every bike is a little different. Intake style, exhaust set up, altitude but a lot of us that went to the 585 are in the 33/76 range on the jets. If yours is stock it's probably 29.5/74?:whoop:
 
mcgroom

mcgroom

Well-Known Member
Seems like a lot of guys love the swap.

I got one on the shelf that is ready to ship if anyone is interested.

Here to help,

Mick
 
alphadog

alphadog

Active Member
After reading the positive posts on installing a 585 cam I pulled the plug and had it done. Satisfied wouldnt be the right word! Much faster. Especially from 3k rpms to redline. A different beast entirely. Reminds me of driving my old 1986 Ninja back in the day.
 
BWG56

BWG56

Guru
Knuckles said:
upgrade the ignition and it will pull like mad
Click to expand...
:eek:Shed some light on this for me, I don't understand how upgrading the ignition would make any significant difference. There's only 2 cylinders and either they get spark or not, does a bigger or faster spark make it explode differently in the combustion stroke?:confused:
I'm not dumb, but close to stupid:lol: on this subject
 
francoblay1

francoblay1

The Spaniard
BWG56 said:
:eek:Shed some light on this for me, I don't understand how upgrading the ignition would make any significant difference. There's only 2 cylinders and either they get spark or not, does a bigger or faster spark make it explode differently in the combustion stroke?:confused:
I'm not dumb, but close to stupid:lol: on this subject
Click to expand...
http://www.bigdogbiker.com/forums/performance/8943-best-damn-upgrade.html

http://www.bigdogbiker.com/forums/how/7950-how-upgrading-thunder-heart-ignition-module.html

:2thumbs:
 
francoblay1

francoblay1

The Spaniard
BTW, I did buy it from TH directly and asked them to send it to me with the right plugs for my K9. It was a simple Plug & Play. 10 minutes job. :cheers:
 
Raywood

Raywood

The Pirate
Staff member
Calendar Participant
Troop Supporter
BWG56 said:
:eek:Shed some light on this for me, I don't understand how upgrading the ignition would make any significant difference. There's only 2 cylinders and either they get spark or not, does a bigger or faster spark make it explode differently in the combustion stroke?:confused:
I'm not dumb, but close to stupid:lol: on this subject
Click to expand...

Ker, the stock ignition is set at 32 degrees BTDC. S&S recommends 28 or 30. The adjustable ignition allows you to change this
 
You must log in or register to reply here.
Top