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Sportster Motorcycle Engine Conversions Advice, questions, and tips for 1200, 1250, 1340, 1450 etc... for Sportster and Buell motorcycle engine conversions

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  #851  
Old 21st July 2012
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[quote=~Grind~;4064483]
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I edited my previous post before I read this. Maybe I might "do this again"..,, what kind of cams were you using? Rocker arms?


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  #852  
Old 22nd July 2012
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Glad to see you're back up and running. Since everyone has done so I'm gonna toss in my recommendation. Just do like I've done this summer and ride the thing and stop diddlin with it. I promise you'll be so much happier.
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  #853  
Old 22nd July 2012
~Grind~ ~Grind~ is offline
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I don't know Xena, as soon as I get finished diddlin and fiddlin with the bike I gotta start working on the truck.... And you know me.... Show me a hoop and I'll jump through it. Heck, I've almost got 4,000 miles on the build, its not even been 3 months. I've just about got it where I want it. I'd like to find a dyno guy and it isn't like I'm not trying. I keep getting stood up. Oh well...


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  #854  
Old 23rd July 2012
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Seajay, what kind of lifters did you end up using?


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  #855  
Old 23rd July 2012
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Originally Posted by ~Grind~ View Post
Seajay, what kind of lifters did you end up using?


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Competition Cams Pro Magnum lifters. They are known to be LOUD, so riding without a helmet ear plugs work great. With ear plugs you can hear the mechanical parts without the echos. In fact, when I last did this 1250 rebuild it made so much noise I was going to take it apart to find the cause. Decided not to because it ran like a champ and 3 1/2 yrs. since it still does.
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  #856  
Old 23rd July 2012
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Well, I've decided I can't live with this level of valve train noise. The stock lifters seem a tad bit quieter but not enough to suit me (it was a nice experiment). The thought of those JIMS powerglide IIs just sitting on the bench doesn't set well with me either. So, I've decided to pull the RS 585s out and install Hammer Performance "Crush 600" cams. The Crush 600 cams are supposed to be quieter and should out perform the 585's. I can't wait to find out. So it's off to the garage. Off! with the heads!
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  #857  
Old 23rd July 2012
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this development excites me, i'm interested in the 600s and would love a review
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  #858  
Old 23rd July 2012
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Originally Posted by ~Grind~ View Post
No Bob, I didn't check that dimension.


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In my own experience, I've found more bad lifter bodies than lifter itself. They shall be paired with the correct tolerance.
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  #859  
Old 23rd July 2012
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this development excites me, i'm interested in the 600s and would love a review
I'll do my best! Like you said I am a "anal retentive machinist". I've been machining so long I think the right or wrongness of this line of work has been engrained into my brain. You said something about learning about the trade. You can try taking a couple of vocational training courses at your local Vo-tech school or maybe take a part time job in a "job" shop. Try to get on a manual machine if you can. CNCs are great production tools but there is a whole lot more to it than doing set-ups, feeding the machine and calling up and editing programs. You could even learn to program but the best programmers are great machinists. You need to learn how to make the part. Its kind of like working on our bikes. There is a lot more to it than just bolting parts together. And if it were easy, everyone would be doing it.
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  #860  
Old 23rd July 2012
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Quote:
Originally Posted by rejeanprimeau View Post
In my own experience, I've found more bad lifter bodies than lifter itself. They shall be paired with the correct tolerance.
Just to clarify Rejean, are you and Bob talking about the ground OD of the lifter body or the undercut area of the lifter body? Would anyone happen to know the clearance between the lifter OD and the lifter bore ID? How about the clearance between the cam journals and cam bushing bores?
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