Roller Rockers
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
If you have the $$$, there are options for "corrected geometry" rockers for those hi-lift cams, which BTW, most of us don't need for reliable and strong street or touring motor. JMHO.
Novice
Joined: Sep 2013
Posts: 22
Likes: 0
From: Riverview Florida
1. change the cams to quiet it down?
2. different lifters, and rockers to quiet it down?
3. what changes could be made without sacrificing performance, and longevity?
Don`t really want to go the Turbo route.
I know when you have a top end rattling, something isn`t right whether it is from the Indy, or a personal build. I know something isn`t right from my other experiences, and that would involve race car engines.
This 120R was in the bike when I bought it off the showroom floor, and I know it has potential for destruction, and want to keep that from happening.
Any advice will be well perused through. Thx
Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
I appreciate your honest opinion as I would like to hear from others as well. I really like my bike, and the powerhouse. I will post pictures soon as the updated build is complete. The question I have is what do I need to do?
1. change the cams to quiet it down?
2. different lifters, and rockers to quiet it down?
3. what changes could be made without sacrificing performance, and longevity?
Don`t really want to go the Turbo route.
I know when you have a top end rattling, something isn`t right whether it is from the Indy, or a personal build. I know something isn`t right from my other experiences, and that would involve race car engines.
This 120R was in the bike when I bought it off the showroom floor, and I know it has potential for destruction, and want to keep that from happening.
Any advice will be well perused through. Thx
1. change the cams to quiet it down?
2. different lifters, and rockers to quiet it down?
3. what changes could be made without sacrificing performance, and longevity?
Don`t really want to go the Turbo route.
I know when you have a top end rattling, something isn`t right whether it is from the Indy, or a personal build. I know something isn`t right from my other experiences, and that would involve race car engines.
This 120R was in the bike when I bought it off the showroom floor, and I know it has potential for destruction, and want to keep that from happening.
Any advice will be well perused through. Thx
Outstanding HDF Member
Joined: May 2008
Posts: 2,543
Likes: 19
From: Ashland Ohio
Do you want more power from the bike? Or a little less with greatly added reliability?
One thing is FOR CERTAIN... remove the SE lifters yesterday and thrown them in the trash. I would recommend replacing them with the S&S premiums. Pricey lifters, but very good ones at that.
After that one upgrade it will depend. Myself? I am going to change the valve springs to a lighter spring and swap cams to move things a bit left. Might try GMR's new 120r camset.
Stock that engine is about 10.3:1 compression and with the 266s is has around 175 CCP.
One thing is FOR CERTAIN... remove the SE lifters yesterday and thrown them in the trash. I would recommend replacing them with the S&S premiums. Pricey lifters, but very good ones at that.
After that one upgrade it will depend. Myself? I am going to change the valve springs to a lighter spring and swap cams to move things a bit left. Might try GMR's new 120r camset.
Stock that engine is about 10.3:1 compression and with the 266s is has around 175 CCP.
Novice
Joined: Sep 2013
Posts: 22
Likes: 0
From: Riverview Florida
Wurk Truk, if I made the changes suggested, where do you think the HP and TQ would be, and would the power come on lower? Currently have the Boarzilla 2 into 1, and Dynoed by SGS in Daytona with PC5 at 128 square. Do you have a link to the suggested cam, and lifters?
Just looked at the S&S .625 geared cam and premium lifters around 1100.00 would you got this way? GMR`s website is under construction. Also will either of these cam companys suggest perhaps a spring to change to?
Eric
Just looked at the S&S .625 geared cam and premium lifters around 1100.00 would you got this way? GMR`s website is under construction. Also will either of these cam companys suggest perhaps a spring to change to?
Eric
Last edited by Eric Lis; Jun 15, 2014 at 12:13 AM.
Novice
Joined: Sep 2013
Posts: 22
Likes: 0
From: Riverview Florida
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Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
Having a 124" being built right now I chose longevity over max potential. Going with the 585 cam to mellow things out along with 10.5-1 With any luck this should last a long time. Builder says I should be around 130/130 with this motor.
