charles Posted November 22, 2006 Report Posted November 22, 2006 should I put the timing back to zero or live it like that? Quote
wesw Posted November 22, 2006 Report Posted November 22, 2006 stock dyna puts between 3-4 deg at certain places according to each curve. low, mid, topend. i would be putting it back to zero or 1-2 deg depending on what fuel you run and what timing you WANT TO HAVE. Please let us know if you can really tell a difference while running it. im talking noticeable difference. to compare thanks. Quote
charles Posted November 22, 2006 Author Report Posted November 22, 2006 What are ALL of your mods? my mods are 28mm carb, cool head with 15cc dome, v-force3, big porting, cpi inframe pipe, and im running c14+ mix with 93 oct. the guy I bought it from say it as 75 hp???(I realy dont know, but im passing my friend with just about the same mod but with 4mil crank also!!!! to bad for theme) Quote
sheefreak Posted November 22, 2006 Report Posted November 22, 2006 The dyna will not retard the timing as much as the stock cdi once you get in the R's, so w/15 cc domes and diluting your race fuel, you will be playing w/fire if you don't back it down to zero. That is unless you are at a high elevation. Not sure what it is in the Montreal area. What is your elevation? You may be playing w/fire as it is mixing your fuel like that. If you start rattling plugs loose, you know you are not good. Quote
dajogejr Posted November 22, 2006 Report Posted November 22, 2006 Don't worry Wes....I'll get you those dyno sheets... :beer: Yeah, 15cc...WTF...how high are you bro?? Unless you're at like...uh, 10,000 feet above sea level, that's way too much pressure and stress on the motor...and uncalled for. According to this weather page, Montreal is at 118 ft. elevation. http://www.wunderground.com/global/station...eclick=miniDial Change those domes....you're killing that motor... Quote
headsup Posted November 23, 2006 Report Posted November 23, 2006 should I put the timing back to zero or live it like that? You might try going back untill the idle speed starts to pickup, maybe +2. Quote
charles Posted November 23, 2006 Author Report Posted November 23, 2006 Don't worry Wes....I'll get you those dyno sheets... :beer: Yeah, 15cc...WTF...how high are you bro?? Unless you're at like...uh, 10,000 feet above sea level, that's way too much pressure and stress on the motor...and uncalled for. According to this weather page, Montreal is at 118 ft. elevation. http://www.wunderground.com/global/station...eclick=miniDial Change those domes....you're killing that motor... The guy I bought it for say it as 15cc dome but I just check the compresion tonight and its at 175psi so I dont think the dome are 15cc. Quote
dajogejr Posted November 23, 2006 Report Posted November 23, 2006 ok...sorry, just didn't want you gernading that motor easily... 15cc domes in a motor with a good top end would easily place you over 200lbs and then some. If the top end is in good working order, you prolly have 18 or 19cc domes... It depends on the overall health of your motor. My motor was brand new this year, but I have a welded stroker crank, fresh top end, etc. I had 185 PSI in each, ran my plate at +8 and curve 3 on the dyna (most overall advance) Cub motors love timing. At 175 PSI, you need straight race gas, regardless of the ignition...or your motor will not last long. Once you go to straight 110 octane or so, put 4 degrees on the plate, and play with the curves....see how you like it. Quote
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