Did the "usual stuff" including checking the fuel pump/fuel delivery?
Greg Lemon
---- Rusty Lesher <rustyle at comcast.net> wrote:
> Hi Larry and others,
>
> You may want to check the life expectancy of your valve springs.
>
> This is the only thing I could think it could be with everything else
> checked.
>
> Good Luck,
>
>
>
> Rusty Lesher
>
> 1959 100-6
>
>
>
> From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Larry
> Paterson
> Sent: Wednesday, August 02, 2017 7:36 PM
> To: healeys at autox.team.net
> Subject: [Healeys] Rough running 100M
>
>
>
> Hi folks - here's one for you to ponder. For the past many years I've raced
> my 100M without a problem. Lately however at around 4500 RPM under load it
> balks and stutters running quite rough. I've checked timing, changed the
> condenser several times checked carbs and all the other usual stuff. When
> not under load it revs freely. The motor has a billet crank, roller
> rockers, aluminium head, 100S pistons, lightened flywheel etc and regularly
> ran up to 6500 - 7000 RPM with no issues. It also has a Mallory distributor
> and is running 24 degrees of advance. Any advice on where to look next would
> be much appreciated.
>
>
>
> Thanks
>
> Larry Paterson
>
> 100M, BN7,
>
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