Author Topic: 44 v-twin cam timing  (Read 3661 times)

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Offline Mow guard

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44 v-twin cam timing
« on: April 15, 2014, 06:54:39 pm »
got a 44 els v-twin briggs pulled the governor out so i can put a flywheel on it & i removed the cam without marking the timing mark on the cam & crank gear. I stupidly re assembled the engine with the crank gear dot & cam dot lined up. Went to start it and it is getting fuel & spark it is trying to fire throught the carb then i opened engine & rotaed the engine counter clockwise & 180 deg to line up again & now it is firing like on the exhaust it sounds like its trying but its definitly a timing issue is there a stock way to reset cam.

Offline matt175

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Re: 44 v-twin cam timing
« Reply #1 on: April 15, 2014, 08:34:03 pm »
If u lined the dots up then the problem is most likely a sheared flywheel key. The key sets ignition timing, the dots set valve timing.
Matt Hewett
2009 All American Mower Championships 2nd place Super Modified Twin

Offline The Tank

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Re: 44 v-twin cam timing
« Reply #2 on: April 15, 2014, 08:40:05 pm »
What he said ^^^^^

If you put it dot to dot then cam and crank are timed correctly. What kind of flywheel did you install?
Frank "The Tank" Woods

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Offline Mow guard

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Re: 44 v-twin cam timing
« Reply #3 on: April 15, 2014, 09:11:59 pm »
The flywheel key looks brand new i physically pulled the key and looked at it it was perfect. Heres my question the cam turns x2 times slower then the crank so couldnt the valve timing be off a 180 deg?

Offline The Tank

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Re: 44 v-twin cam timing
« Reply #4 on: April 15, 2014, 09:29:42 pm »
No way possible on these eongines. You may have a sheared crank gear key. What kind of flywheel? If ARC what did you set coil gap at? Stock cam or race cam? Solid cast cam or press on lobe cam?
Pm sent MowGuard
Frank "The Tank" Woods

AKA "The Intek Outlaw"

Offline matt175

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Re: 44 v-twin cam timing
« Reply #5 on: April 16, 2014, 12:39:54 am »
Like Frank said, dot to dot and valve timing has to be correct unless you have a sheared crank gear key. For each revolution of the crank the pistons end up in the same place. They may be on a different stroke but the cam and valves determine that. If you installed an arc flywheel then make sure you have it set correctly on the hub and the bolts aren't loose. I have had flywheel keys shear after installing flywheels that looked like new and they sheared as soon as I fired it up. Pulled my hair out cause I knew it looked like new but when I pulled the nut off it was sheared, new key and ran fine. Frank asked a good question about what cam as well, the composite cams are bad about stripping but the solid can't.
Matt Hewett
2009 All American Mower Championships 2nd place Super Modified Twin

Offline rotten ron

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Re: 44 v-twin cam timing
« Reply #6 on: April 17, 2014, 05:30:43 pm »
Check the compression,if you have some it is probably ignition timing.

Offline Eatondirt

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Re: 44 v-twin cam timing
« Reply #7 on: April 19, 2014, 11:22:00 am »
If its a g team can it may have a different timing mark .
Casey Eaton
Big Dog Mower Racing