Heymow - Lawnmower Racing Forum
Engine Help => Briggs OHV & Vanguard => Topic started by: Snapper#67 on April 09, 2020, 08:20:44 pm
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Hey guys buddy of mine has a built vtwin,billet wheel set full neg , really good honed block , stock pistons with new rings , arc rods, precision cheetah cam, 49 heads milled 110 , ec roller rockers, dual springs with stock push rods, , valves are set at .003, cam is installed straight up , yes it has the hi torque starter a good battery, when he goes to whirl it over it it keeps jamming up on the compression stroke , any ideas, need a bigger batter , weak starter , internal issues , anyone run into this before or have any further ideas? Thanks I’m sure it’s been covered before just covering all my bases , cheers
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Did you the clearance on the valve retainers to the valve guides? I bet you are bottoming out the retainers out on the guides. Check your push rods. They will be bent if this is the case.
I made this mistake. That cam has a lot of lift!
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Hey guys buddy of mine has a built vtwin,billet wheel set full neg , really good honed block , stock pistons with new rings , arc rods, precision cheetah cam, 49 heads milled 110 , ec roller rockers, dual springs with stock push rods, , valves are set at .003, cam is installed straight up , yes it has the hi torque starter a good battery, when he goes to whirl it over it it keeps jamming up on the compression stroke , any ideas, need a bigger batter , weak starter , internal issues , anyone run into this before or have any further ideas? Thanks I’m sure it’s been covered before just covering all my bases , cheers
I,d make sure you have a know good battery,good battery cables (i use 2 gauge) ,if those are good points to the starter then.
Have you checked flywheel key?
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Good point both Paul’s lol, yes battery is good, cables are being swapped out ( had stock ones on) I’ll mention about the valve guide clearance! Yes to my knowledge flywheel key is good, I’ll make a point to check all those things off our list, thanks fellas!