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| UPDATE ON T750 MOTOR SPECS.....OMC & YAMAHA http://ww.w.hpbc.ca/viewtopic.php?f=24&t=4354 |
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| Author: | Hounddog [ November 24th, 2020, 11:01 am ] |
| Post subject: | UPDATE ON T750 MOTOR SPECS.....OMC & YAMAHA |
OMC...SST 45.....2018 REVISIONS With less original replacement parts available, the spec rules were expanded to included other parts. Here is the revised document: https://www.apba.org/documents/56246555 ... ations.pdf There are revisions to porting and a crank shaft modification. T750 rules differ by allowing: - ANY Tuner - 160 compression maximum YAMAHA.......60D....ORIGINAL SPEC SHEETS Matt was able to get the original 60D spec sheet. The 60D went thru several revisions over the first few years likely due to lack of original parts. The spec sheets provide us with important information for our T750 class. - the porting is EXACTLY the same as the stock 55 hp....as is the cylinder head - the difference is a larger carburetor , much larger main jet, different reed stop and custom tuner. THIS COULD? BE A GAME CHANGER FOR THE YAMAHA IN IMPROVING PERFORMANCE!! It gives us the size of the tuner T750 rules differ by allowing: - ANY Tuner - 160 compression maximum |
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| Author: | mattmak [ November 24th, 2020, 5:26 pm ] |
| Post subject: | Re: UPDATE ON T750 MOTOR SPECS.....OMC & YAMAHA |
Yamaha 3cyl 50hp (Pro50): https://www.uim.sport/Homologation1.aspx choose "Engine", choose "Yamaha", look for the "50H". |
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