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Author Topic: Twin Spechs(Flat head)  (Read 10519 times)

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Offline BIG AL 202

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Re: Twin Spechs(Flat head)
« Reply #15 on: December 21, 2009, 12:27:07 pm »
so the club, the dirt devils, can spec that engine
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Offline bountyhunter

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Re: Twin Spechs(Flat head)
« Reply #16 on: December 21, 2009, 12:48:41 pm »
Yes As Big Al said ;)  Our group,the thaca Dirt Devils have a class We call Pro / Stock witch is opposed twins and over head singles 31 or under! but must be at stock specs! to keep it fair we have a tear down policy if theres any ??s or to help deter cheating! we also have a class Super / Pro that let ya make mods to these engines! like I said I know the singles (OHV & Flathead)pretty good at least Briggs but the twin :confused: I need help with yet! L.O.L. :lol:
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Offline Rooster

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Re: Twin Spechs(Flat head)
« Reply #17 on: December 21, 2009, 04:04:08 pm »
Well apologies, I ended up laid up all weekend with a hurt back. doc said it'd be better in a few days,but only getting worse. I will get to it this week.
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Offline bountyhunter

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Re: Twin Spechs(Flat head)
« Reply #18 on: December 21, 2009, 04:28:11 pm »
Rooster, aint in no hurry! got 4.5 months at least before we will need them! better slow down chasin them hens around the barn yard.L.O.L.
Just kiddin hope ya get better!! I know how a bad back is bin there and doing that!!! it aint know Fun!!!!

Again let that back heal up first!!! this aint nothin thats pressing!!!
Thanks Ferris
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Offline GTX21

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Re: Twin Spechs(Flat head)
« Reply #19 on: December 21, 2009, 06:14:40 pm »
Can someone explain how to measure the lift? I have a stock 42 opposed cam that I can go measure now, but i dont wanna give incorrect measurements.
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Re: Twin Spechs(Flat head)
« Reply #20 on: December 22, 2009, 12:57:57 pm »
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Offline GTX21

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Re: Twin Spechs(Flat head)
« Reply #21 on: December 22, 2009, 05:58:09 pm »
Ok thanks. Im gonna go measure now. Using a digital caliper too.
Ok these are from a model 422707 opposed 18hp.          Theirs a # stamped into the cam, it is A14 (dont know if that might help identify a certain cam for a certain model engine but their it is) I measured both intake and ex. on the cam to make sure i was accurate for my cam. The number I got for Intake lift was .281, and the EX. was .252. Now note these numbers may be larger or smaller by very little depending on the wear of the cam.
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Nathan Mansberger
                   
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Offline bountyhunter

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Re: Twin Spechs(Flat head)
« Reply #22 on: December 24, 2009, 08:18:42 am »
Ok Thanks thats a start. Ive got a 16 that broke a rod Ill pull cam out when i can get it out of snow bank! and see if its the same! still if anyone else has one (maybe out of 46)please measure if ya can Thanks again GTX21
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Re: Twin Spechs(Flat head)
« Reply #23 on: January 07, 2010, 08:12:33 am »
Rooster
have if ya get chance could ya measure cam lifts for me thanks Ferris
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Offline GTX21

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Re: Twin Spechs(Flat head)
« Reply #24 on: January 07, 2010, 09:34:30 am »
Did the numbers I gave you work for ya?
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Nathan Mansberger
                   
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Re: Twin Spechs(Flat head)
« Reply #25 on: January 07, 2010, 10:43:28 am »
yes and thanks again just trying ta see if there all about the same! know on singles there .280 on most, but some were at .320 or a little less on intake!
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