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Post  chevyiron420 Tue Oct 24, 2017 3:06 pm

I have read that the first hot shot models were built using mk#3 crankcases by machining the deck surface down to accommodate the new cylinder. Does anyone have one, or a picture of one. I keep a look out on ebay but havent seen one there. I have even thought of faking one. I have a crankcase I could use.
Phil
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Post  Marleysky Tue Oct 24, 2017 8:33 pm

first wen mac hot shots Img_0122
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IDon't have a Mk#3. Have two marked Mk II.  Compared back to back, then back to back to a Mark XII.  Looks like you could mill off some material and tap the case to match the cylinder.
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Post  Marleysky Tue Oct 24, 2017 8:50 pm

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Post  chevyiron420 Tue Oct 24, 2017 9:08 pm

Marleysky, I have the same old models that you do. I am looking for the first model that used the modern cylinder. I read that you can see the remnants of the wen mac name milled half away.
Phil
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Post  Marleysky Tue Oct 24, 2017 9:47 pm

chevyiron420 wrote:Marleysky, I have the same old models that you do. I am looking for the first model that used the modern cylinder. I read that you can see the remnants of the wen mac name milled half away.
Phil

looks like you are looking for a example of "engine 19" from that reference guide.
Or, you can make your own?
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Post  chevyiron420 Tue Oct 24, 2017 10:56 pm

Yes sir, thats the one I am interested in. In all the years I have been using and tinkering with wen macs, I have never seen one. If I can come up with a crankcase I may make one. I have a friend who can do the triming and threading, if I can get him to do it.
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Post  roddie Wed Oct 25, 2017 12:08 pm

Here's a MkIII that Bob (rsv1cox) sent me recently. Also in the box were one each; MkV, MkVI, and MkVII and one without a "Mk" designation.

first wen mac hot shots Wenmac10
first wen mac hot shots Wenmac11
first wen mac hot shots Wenmac12
first wen mac hot shots Wenmac13
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Post  Mark Boesen Wed Oct 25, 2017 9:38 pm

https://groups.yahoo.com/neo/groups/049Collectors/files
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This engine was used on the 'Flying Wing' series
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Post  crankbndr Wed Oct 25, 2017 9:59 pm

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Post  chevyiron420 Wed Oct 25, 2017 10:58 pm

Mark, I may have misunderstood. Are you saying the mark X pictured is the missing link engine? I thought they were made from surplus mk III cases.
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Post  roddie Thu Oct 26, 2017 3:42 am

Very confusing.. Here's another engine given to me by Bob, that I missed.. (as received; less the needle and prop..)

It doesn't have that "shaved-case" though..  Huh... It appears to be a cross between the #19 and #20 engines.. but could also have parts that were swapped. Note the glow-head with "slots" as opposed to flats.. and AMF appearing "below" WENMAC on the L/H side of the case.

first wen mac hot shots Wenmac14
first wen mac hot shots Wenmac15
first wen mac hot shots Wenmac16
first wen mac hot shots Wenmac17
first wen mac hot shots Wenmac18
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Post  Mark Boesen Thu Oct 26, 2017 11:01 am

chevyiron420 wrote:Mark, I may have misunderstood. Are you saying the mark X pictured is the missing link engine? I thought they were made from surplus mk III cases.
Phil

oops, sorry, thought that photo was of the 'missing link' engine, it was late and never bothered to look close, it's actually a later version without the oxide coating on cylinder.
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Post  Kim Thu Oct 26, 2017 7:11 pm

I got this one with a silver Aracobra. Looks good externally, but the rod was broken at the crank pin.

P.M. me if you think you can use it.

Kim

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first wen mac hot shots 2_14

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Post  chevyiron420 Thu Oct 26, 2017 7:44 pm

Kim PM sent
Phil
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Post  Oldenginerod Thu Oct 26, 2017 8:39 pm

chevyiron420 wrote:Kim PM sent
Phil
Does that mean I should have sent you three new pistons? lol!
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Post  Kim Fri Oct 27, 2017 6:57 am

Oldenginerod wrote:
chevyiron420 wrote:Kim PM sent
Phil
Does that mean I should have sent you three new pistons?  lol!

Hey, I'm good...Phil might be able to use them. Got to support the guys who bring the old Wen Macs back to life!!!
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