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Old 09-28-2017, 07:55 PM
BEEFKING69's Avatar
BEEFKING69 BEEFKING69 is offline
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Join Date: Jun 2015
Location: Blountstown, Fl
Posts: 364
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Thx for that info man. Thats the best explanation of the situation ive ever read. If you havent already check out the website.

The current situation on the swap is.......

1...Ebay cdi cranks right up but idles bad and runs like crap till about half throttle then feels like a huge bust of power and runs 50 mph.

2... What i believe to be a factory cdi cranks right up and runs damn good other than a slight flutter through out the whole rpm range but feels gutless and only runs just over 40mph.

3...Advanced the timing one tooth on the cam and it feels stronger out the hole but now only hits 39-40.....Tried ebay cdi and it runs alot better through the whole rpm range but still only hitting 39-40.

4...Is it possible that the 39t axle sprocket is just bogging it down that much even on a long stretch of pavement? Still dont account for the 10mph speed loss between CDIs tho.

5...Does anyone know the timing curve on the Syms vs the CNs etc? I could possibly get a programmable unit like the igntech< spelling?
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Buggy Dealer
Crossfire 250r IRS (400cc swap in progress)
Crossfire 250r (SYM 250)
HH250SS..RIP (IRS donor for the crossfire)
HammerHead 150
Gs Moon buggy 150
Many other random parts buggys (still never have what im needing tho :/ )

Last edited by BEEFKING69; 09-28-2017 at 07:58 PM.
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