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lower valve tins

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fhsmith1

Posts: 210

Joined: Wed Jul 26, 2006 6:10 pm

Location: Georgia

Post Sat Feb 16, 2013 6:42 pm

lower valve tins

Does anyone offer a quality lower tin replacement? Vtwin has a listing but their quality has always been questionable.
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Lee W

Posts: 141

Joined: Sat Sep 23, 2006 8:58 pm

Location: Carver, MN

Post Wed Feb 20, 2013 1:08 pm

Re: lower valve tins

I have recently had the displeasure of having to purchase a new set of V-Twin brand Knuck heads. The rest of the heads needed a complete rebuild to be serviceable, but the lower tins were surprisingly good. The biggest flaw that I noticed is that the oil tubes have a "copper" plating which did not "take" the parkerizing. In one way that is a good thing since it makes them easy to spot as not being originals.

BTW- the earlier spring cups from V-Twin were not as nice, with less than normal width on the top gasket surfaces
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fhsmith1

Posts: 210

Joined: Wed Jul 26, 2006 6:10 pm

Location: Georgia

Post Fri Feb 22, 2013 10:39 am

Re: lower valve tins

Lee W
Thanks for the reply. I have a set ordered. I will post with the quality and try to post pictures of the valve guide mods also.
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fhsmith1

Posts: 210

Joined: Wed Jul 26, 2006 6:10 pm

Location: Georgia

Post Thu Mar 07, 2013 3:51 pm

Re: lower valve tins

I did get the lower tins in from Vtwin. Haven't really started the install process yet. I will try to get pics as it goes.
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Chris Haynes

Posts: 2637

Joined: Wed Jul 05, 2000 12:01 am

Location: Los Angeles, CA

Post Thu Mar 07, 2013 11:37 pm

Re: lower valve tins

They are copper lines, not copper plated. Originals had steel lines.
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Lee W

Posts: 141

Joined: Sat Sep 23, 2006 8:58 pm

Location: Carver, MN

Post Fri Mar 08, 2013 3:57 pm

Re: lower valve tins

Chris, my assumption that the lines were copper plated was based on that they were brazed into the cups. After reading your comment though, I realized that I did not really know if you can braze to copper or not (still don't). So I took a closer look.

I was able to sand off a section of the copper plating, and I even used some gun bluing on it. Sure enough the sanded section took the color OK. Of course that's not to say that they did not use copper lines on some of their covers, only that these recently purchased ones have steel.
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fhsmith1

Posts: 210

Joined: Wed Jul 26, 2006 6:10 pm

Location: Georgia

Post Sun Mar 10, 2013 7:44 pm

Re: lower valve tins

Lines are not copper. They look that way but can be picked up with a magnet.
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