[yenkomike]

i have a 468 . im running manly 50 cc dome pistons with 990 heads. my cam is a solid flat 258/268 at .050 lift 595 621 intake installed on a 105 i have noticed that my starter was working very hard so i reworked the distributor so it had less initial advance and it starts good . i did a cold compression test and its between 215 and 220 . thats cranking until it stops rising. with the throttle open. is this to much? that has to be 240 hot. im just thinking i should have added more cam. i can say one thing it is responsive .thanks

 

[jeff swisher]

that is fine ..you might try a kill type switch that allows you to crank it over without fire to the plugs (or should i say coil) .. then flip the switch and light it off...

I have ran 245lbs with 22 inital and 41 total..with the above setup. that was 245 with the throttle closed

some eletronic boxes have a start retard function, that may be of some help

 

[badrad]

The ignition cut out is perfect for your set up, used them in the past.

 

[Jebchevelle]

I will watch this with intrest as ill be runing 12.5:1 with a high torque starter and 153 tooth flywheel. and will need to learn a few things along the way this is my first high comp engine.

 

[yenkomike]

thanks for the feedback. i think with the timing curve i have now it starts good . i try to lock out the timing at 37 and almost wrecked a good starter.

 

[jeff swisher]

I never had to use anything but a well built stock starter..and instead of locked out timing my curve was real quick...
for the 229 gears it was all in by 1700 rpm and with other gears it was in by 2200rpm...
No vacuum and the advance plate was secured. so that high rpm flutter was taken care of...

I had probably spent 2 weeks of driving and tweaking that distributor..to get the best of everything out of it....
Lots of grinding and welding.

You can weld extra weight to the advance weights .to help tailor the curve..

with quick curves the idle gets weird ,due to the curve coming in soon.

Mine would start advancing at 1100 rpm , that was my idle rpm , throw it in neutral at stops ...

Cam and lifters last longer that way