Harley Jugs
Road Captain
Joined: Jun 2007
Posts: 627
Likes: 1
Yes you can have them bored.
Road Warrior
Joined: Jun 2007
Posts: 1,788
Likes: 4
From: Here
Yep. Bore 'em.
Advantage -
1. You already own them
2. Boring much cheaper than a new set of 3.875"
3. The shop should be able to custom fit the pistons to the jug
4. A good shop uses torque plates and gives you a perfectly round bore (not that SE jugs are bad, just mass produced)
5. You can actually bore up to a 107" and get maximum displacement
Disadvantage -
1.
Advantage -
1. You already own them
2. Boring much cheaper than a new set of 3.875"
3. The shop should be able to custom fit the pistons to the jug
4. A good shop uses torque plates and gives you a perfectly round bore (not that SE jugs are bad, just mass produced)
5. You can actually bore up to a 107" and get maximum displacement
Disadvantage -
1.
Tourer
Joined: Oct 2009
Posts: 323
Likes: 2
From: Central Pennsylvania
Im just finishing my 103 kit today and the ring gaps and cylinder specs are dead on,I couldnt be happier besides most shops will charge you 200 + to do your cylinders and harleys are 300. with warranty.
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
No different from having 88" cylinders bored to 95"; same, same. Just make sure that the machine shop has bored motorcyle cylinders before, uses torque plates and know the fitment clearances for the pistons.
Having said that, the random selection of MoCo cylinders and pistons could produce a combination of parts that are out of tolerance but as a general rule, there is no reason to be concerned about using MoCo cylinders and pistons. If you are concerned have the parts measured for fitment before assembly.
Having said that, the random selection of MoCo cylinders and pistons could produce a combination of parts that are out of tolerance but as a general rule, there is no reason to be concerned about using MoCo cylinders and pistons. If you are concerned have the parts measured for fitment before assembly.
Wow, you said Harley jugs, I had something totally different in mind. Must be in the wrong section......
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Road Captain
Joined: Jun 2008
Posts: 613
Likes: 2
From: Tallmadge, Ohio
What do you think Harley does to make their 103's? They just bore them out as well but probably not as well as they should from what I have read. Bottom line, go for it.
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Outstanding HDF Member
Joined: Mar 2008
Posts: 2,247
Likes: 0
From: Salt Lake City, Utah
Funny, I saw this thread title and this picture immediately came to mind. I thought I might see it here, great minds think alike.