Seadoo 787 RFI Rotary Valve timing Procedure
Vložit
- čas přidán 29. 08. 2024
- Rotary Valve timing for a Seadoo 787 RFI Engine, even though the process is the same for a carburated engine. I'm not a guru but just trying to help people out.. A picture is worth 1000 words. Good Luck All !!
awesome vedio, very well explained exacly as it says on sea doo manual for engine 787, right on target open 147 close 65 outstanding!
The valves don't always come out spot on. Sometimes you have to flip the valve and determine which side puts you in better tolerance. I like be closer to the middle but sometimes you end up with readings at either end. Intolerance is close enough but like I said, I shoot for the middle. Good Luck !!
Looks simple enough, well see in a day or 2 when I get ready to put my motor back in.... I've never done this before but there's a 1st time for everything
How did you make out?
Very helpful. Professional.
Thanks I just wanted to get something up there for people to see how it is done. I remember my first time. A video like this would have been helpful. Thanks for the comment !!
You gotta be from my home state LOUISIANA!!!
Yes I am. Born and raised on the Westbank now I live on the northshore. :)
Porque vcs não passa essa eapĺicao em portugues
da mesma forma que voce nao fala ingles, concerteza o senhor que esta explicando nao fala portugues! mas nao precisa nem prestar muita atencao no que el esta dizendo , o video foi tao bem feito que ele esta seguindo a risca o manual mecanico do sea doo 787 motor! esto afirmando por que tenho este manual! ele sta certissimo! ve no vidio em cima ele esta usando um medidor de centro morto do pistao na saida da da primeira vela do motor, este aparelho leva o pistao para cima exatamento no ponto morto antes dele retornar para baixo na batida , ele nao esta usando aquele tipo " a mais ou menos aqui, pelo contrario ele esta usando precisao tanto e que o cincronismo do pistao do motor dele esta marcando 147 em cima e 65 na parte de baixo como manda no manual! perfeito a media dele!
Hi Nirond, most excellent response. Thank you for taking the time. So true that I don't speak any language but English. I do my best to be as exact as possible and as you noted... I get this stuff spot on and leave nothing to chance. Thanks again !!
This is NOT correct procedure!
I used your method and the engine ran HORRIBLY. Full time mechanic, I knew instantly upon start up that I was experiencing improper timing.
You show us to line the 360 at TOP port when the procedure is to line 360 at the BOTTOM port.
I would take this video down man, I was not happy until I discovered that your instruction was wrong and that it turned out to be an easy fix lol.
You clearly didn't watch the entire video. He checked both open and closed. Retard.
Sorry you had problems. If you watch the video you will see that there are TWO points to check the rotary valve timing. ONE with 360 degree mark on the top of the intake port, and THE SECOND to check with the 360 degree mark on the bottom of the intake port. If you read the degrees when I do each one you'll see the difference. The video is absolutely positively correct. The reason to check BOTH TOP and BOTTOM degree is because sometimes you can flip the rotary valve over and get the readings closer to spec. There is a tolerance in the manual that is listed in degrees of variance.
@ripptydevibes2581 i think u should be the one thats gonna need to remove the comment 😂