cam curious
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Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
I do appreciate the advice but there's no pride in having someone else rebuild my motor for me. I do have access to cnc or Bridgeport if need be ,shop nearby to handle valveseats and honing, boring or whatever I choose to do with it. Never painted a bike before but did mine after a few questions, except for the sandblasting,most can't believe I did the job myself, but that's who I am, thick skulled.
Dirt don't hurt
Joined: Jan 2011
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From: Haslet Texas
If I recall correctly your book also tells you the cylinders should be within 10% of each other.
Yours aren't.
Outstanding HDF Member
Joined: Nov 2013
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I had more than 90 in mine, don't remember how much now, but I had leaking exhaust valves they were in rough shape
Road Master
Joined: Feb 2014
Posts: 913
Likes: 5
From: indiana
you were reading it right a Harley will run with 90 psi but will be a dog out of the hole a moped will beat you stoplight to stoplight. and every time you shift it will fall on its face.
with any evo stock and an L grind cam should have 152psi at a 7.8:1 ratio
Club Member
Joined: Apr 2011
Posts: 5,803
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From: SE Louisiana
use your hose from the compression tester with the shrader valve removed, and put some air in the cyl. , should be easy to tell what's leaking if you want to take the time to see what's up.
Otherwise sounds like we gonna rebuild it.
Hmmm ,, w6 or w8 ,w6h maybe, who we sending the heads too, flat tops or domes,.. decisions,decisions.
Otherwise sounds like we gonna rebuild it.
Hmmm ,, w6 or w8 ,w6h maybe, who we sending the heads too, flat tops or domes,.. decisions,decisions.
I do appreciate the advice but there's no pride in having someone else rebuild my motor for me. I do have access to cnc or Bridgeport if need be ,shop nearby to handle valveseats and honing, boring or whatever I choose to do with it. Never painted a bike before but did mine after a few questions, except for the sandblasting,most can't believe I did the job myself, but that's who I am, thick skulled.
Stellar HDF Member
Joined: Aug 2012
Posts: 2,664
Likes: 184
From: Indiana, USA
Easy peasy cut the pushrods, purchase a set of adjustale pushrods and a cam spacer kit and a cam cover gasket and the cam of your choice. SE-11 worked well for me.
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Seasoned HDF Member
Joined: Aug 2007
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From: NW AR
His numbers are within 10%, plus/minus margin of error. Was this done on a hot engine? That's the spec. Personally, I'd put the cam in and run it, unless you just really want to do a top end at 40K. These ain't shovelheads needing a top end every 20K.
Dirt don't hurt
Joined: Jan 2011
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From: Haslet Texas
With numbers of 145 and 130 he is 0.5 too low on the lower cylinder.
Granted it is close but it is outside the 10% range.