i recently bought a 93 sp with a bad/locked up 587, i also bought a 657x motor and electrical box to match. I cant seem to make it run. Its as if the timing was too advanced. I can make it run with a spark box , but only idle in water. should i be using the rotary valve from the 587 since im using the carb and exhaust from that engine???
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1993 sp conversion
- Thread starter brandonk
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I have never done this but I think if you have switched the electrical stuff over the carbs/exhaust would not be such a big difference to use the old rotary valve - I wonder about the tuned pipe but that will come later, have you timed the RV for the donor year/model? You will find the 657x has inline carbs, slightly different cyls/pistons - but the cover and all with carbs is same so I wonder what is the spark box you talk about - how does it know when to send the spark?
the motor didnt come with the carbs, all i have is the 587 stock carb, and exhaust. it still seems as if the timing is way out of wack. i just tried the 587 flywheel with different magnet placements and still no luck. the spark box is an old leakdown tester... its a continuious spark. up to 2inches worth.
so, i put this rusty old 587 flywheel on clean the plugs, and guessed on the rv timing(valve from 587) and she fires right up idles and revs, i guess its time for a test drive, im sure ill have to ajust the carb. All ive wanted for the last 3weeks is this dam thing to run on its own...
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