OzVMX Forum

Marque Remarks => Yamaha => Topic started by: Andrew L on October 31, 2012, 09:23:14 am

Title: rt 360 exhaust port opening angle atdc
Post by: Andrew L on October 31, 2012, 09:23:14 am

Has anyone measured the exhaust port opening angle atdc on an rt3 360 with stock porting any help would be great.cheers mav

Title: Re: rt 360 exhaust port opening angle atdc
Post by: facthunt on October 31, 2012, 11:57:20 pm

Old notes say 92atdc for DT360A. RT2/3 should be close.

Title: Re: rt 360 exhaust port opening angle atdc
Post by: Andrew L on November 01, 2012, 12:07:04 am

Thanks for that facthunt im making a new expansion chamber and the program I am using for part of the design requires that info, you,ve saved me a few hours of rootin around with a degree wheel, I used the figure 95atdc in my calculations so not far off. cheers Mav