[Healeys] Rough running 100M

Bob Spidell bspidell at comcast.net
Wed Aug 2 20:23:38 MDT 2017

Run it in a dark garage (with plenty of ventilation) and look for spark 
leakage (dist. cap + wires).

On 8/2/2017 5:50 PM, i erbs wrote:
> did you change the rotor? simple test. I have seen this happen with a 
> bad rotor or even the carbon piece/and spring that connects the cap to 
> the rotor.
> Ira Erbs
> Portland,OR
>       _______                          _______
>      (______ \____1959 BN4____/ _______)
> (_________________________)
>           BT7 engine and disk brakes
> A racing car is an animal with a thousand adjustments. Mario Andretti
> Please excuse random auto corrects and misspelled words
> On Wed, Aug 2, 2017 at 4:35 PM, Larry Paterson 
> <Larry at patersondesign.ca <mailto:Larry at patersondesign.ca>> wrote:
>     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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