Board index Flathead Power-Technical Questions, Answers, and Suggestions Big Twin Flatties Repro 13 FIN Cylinders 74" & 80"

Repro 13 FIN Cylinders 74" & 80"

Post Fri Oct 29, 2010 1:11 pm

Posts: 17
Location: BLOOMSBURG, PA

Just to put my 2 cents out there. I am selling the 74" & 80" 13 fin repo cylinders too, in different configurations. I have thoroughly gone through these castings & have found the following :
- the base flanges are 50-60thou thinner than the stock base flange (i.e. 0.450 VS 0.500)
- the intake & the exhaust bores have some core-shifting & need porting to flow anywhere near original
- the exhaust external airflow also needs the flashings cleaned up
- overall the external appearance is a little rougher than Harley, but for the price, we are lucky to have them.

Future testing :
1. We will be testing to see how well they shape up when using 1 original cylinder & one repo cylinder. If this test is good, we will be selling individual cylinders.
2. We will be doing K-model threads & intake adaptions to these cylinders to see how well they handle these performance enhancements. Will post results.

VERSION 1 :Bare cylinders as cast, valve guides & thread nipple installed - 74" or 80" contact us for pricing

VERSION 2 :Same cylinders, with fitted pistons - 74" = contact us for pricing
VERSION 2 :Same cylinders, with fitted pistons - 80" = contact us for pricing

VERSION 3 :Same cylinders, with fitted pistons, ROWE Black nitrate valves & valve job - 74" = contact us for pricing
VERSION 3 :Same cylinders, with fitted pistons, ROWE Black nitrate valves & valve job - 80" = contact us for pricing

VERSION 4 :Same cylinders, with fitted pistons, ROWE Black nitrate valves & valve job, ported & flowed - 74" = contact us for pricing
VERSION 4 :Same cylinders, with fitted pistons, ROWE Black nitrate valves & valve job, ported & flowed - 80" = contact us for pricing

Note versions 1 - 3 have no flashings or port cleaning work done, and are sold as cast & cast machined.

Paul
http://www.americancyclefab.com
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Post Fri Oct 29, 2010 10:42 pm

Posts: 976
Location: Markt Einersheim, Germany

Ya know pa's gonna edit this for you

George

Post Sat Oct 30, 2010 5:52 am
Pa Site Admin

Posts: 5843
Location: Ohio USA

George Greer wrote:
Ya know pa's gonna edit this for you

George


Indeed I did. Forum policy forbids exact vendor pricing quotes. Pa

Post Sat Oct 30, 2010 7:55 am

Posts: 17
Location: BLOOMSBURG, PA

My sincere apologies. Paul.

Post Sat Oct 30, 2010 5:06 pm
Pa Site Admin

Posts: 5843
Location: Ohio USA

That's not necessary Paul. We have all done it at least once, before we realized it. Most of us link to our pricing. That works pretty well. You can even state that is what the link goes to. It's good to know what is available out there in the parts world. Pa

Post Thu Nov 18, 2010 4:00 am
jib

Posts: 575
Location: devon,england
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years


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