H-D Cylinder Honing
Uploader Comments (fiatnutz)
Top Comments
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Great video, very informative. Thanks for sharing, and please post any other work as this footage is AWESOME : - )
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Amazing and informative video. Thanks John for the fine video instructions !!
All Comments (31)
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Thank you John, for the extra time you share with everyone... The regular people! Like me love this stuff, Working in a Auto Manufacturing for almost 30 years, there's nothing we do that compairs to what you do! Keep up the good work... Hope your Holiday is great!
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@07blackdog The main reason why evo and tc:s are less prone to gasket leaks, is the bigger clamping length. The long through bolts provide better preloading than the stud/base head/bolt system, this better maintains the pressure on the gaskets. Another factor is the larger thermal growth of aluminum, since the whole cylinder is clamped on evo and tc:s, the total thermal growth of the cylinder helps increasing pressure on the gaskets.
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@07blackdog Yes I know that after the evo was introduced, some builders started using torque plates on the older non trough bolt system engines with iron cylinders. At least when reboring. In my opinion, the need for torque plates is way more important on the evo and tc engines because of the less stiffer aluminum comined with the through bolt system. I guess that torque plates wont hurt on shovelhead and older cylinders. I just think thet Vector6977:s comment was overly critical in this case.
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@kvadrupel Not so!I have honed hundreds of cast iron HD cylinders and can state without a doubt that torque plates should be used in all cases.The torque spec.(65 ft. lbs.) for the iron cyls. is approximately 25 ft. lbs. greater than the Evo-TC spec.,and is distributed along a much smaller vertical area.The studs running through the entire length of the cylinder and head distributes the torque over the entire assembly and actually causes less distortion.This is largely why they do not leak.
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THANK YOU John, good light, good sound, and you explain the process as you go.
Not to many know how to do a good video on machining.
Thank You Chris aka FinnMacCool869
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how much do you think it would cost to bore the cylinder on a polaris predator 90?
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good vid thanks
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As mentioned, you only use torque plates on aluminum Evo and Twin Cam cylinders. Engines with short cylinder head bolts dont need torque plates since the headbolts dont compress/distorte the cylinder.



Can you do my Norton Commando Cylinders?
berkelusa 1 year ago
@berkelusa Yes.
fiatnutz 1 year ago
how much money would something like this cost
cp3killer 3 years ago
$45.00 per cylinder
fiatnutz 3 years ago
Ciao john ...H.D cylinder final Ra=..?
complimenti x tuoi video con sunnen equipement
robysunnen 2 years ago
28-38 Ra for moly rings
fiatnutz 2 years ago