Thread: 3 Degree keyway??
03-23-2008, 08:05 PM #1
3 Degree keyway??
Can someone give me some advice on what and how the keyway works? I believe it is a timing advance right? Thinking about doing this to my ski next year...Need advice...
03-23-2008, 08:10 PM #2
it is the keyway that locks the flywheel in place
yes it advances the timing
it is a pain in the a@@ to install, mostly it is a 1300 mod because until recently you couldn't replace the CDI on a 1300
for a 1200 I wouldn't suggest you add a keyway, it is better / simpler to install either an Advent or Riva/R&D CDI
03-23-2008, 08:17 PM #3
My opinion on the keyway is great for the 03 and up 1300 curve but to much for the 00-02 ignition. The pre 03 has a pretty advanced curve and requires race gas to prevent detonation when combined with a keyway. Worst part of the curve is in the 5 to 6k range.
03-23-2008, 08:32 PM #4
03-23-2008, 09:54 PM #5
Phillip I will look into the keyway....
03-23-2008, 10:07 PM #6
Got a keyway on my 00 and run 91 with no problems. Guess i'm one of the lucky ones.
03-23-2008, 10:10 PM #7
i have a 4 degree in my 1300 with no problems. i run 93 octane in mine.
03-23-2008, 11:02 PM #8
03-24-2008, 03:30 AM #9
I ran a 3* keyway in my 1390 BB GK for a year,,, BUT I DO NOT HANG around in the 5-6000 rpm area(thus I do not cruise). I had NO problems. and It was a heck of a change. But I added VF-3s at the same time. I ended up with a massive rpm gain because It leaned out so bad.I almost BURNED it up!
so Yes I do think is is a cheap alt, to the advent. yes it is a fun to install.(auto adavance has a harmoninc puller kit you can get on the" loan a tool" program they have and it even has the bolts you need in it. This an a mirror is all you need. takes longer to get the exhaust off )
Between the key and the VF3s your into 500-550. and it is a big increase for you money.
BUT It will not be a cruiser after that!
03-24-2008, 09:38 AM #10
- Join Date
- Feb 2007
- Cape Town, South Africa
Would you guys advise this as my next mod ?
and do i need to run the riva controller ? Will it wake the ski up a little ? (acceloration ?)
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By Fercho in forum Yamaha PWC Performance (2-stroke)Replies: 17Last Post: 03-09-2013, 06:06 PM
By RX951 in forum Yamaha How To & FAQsReplies: 11Last Post: 02-25-2011, 01:35 PM
By krispaintballz in forum Yamaha Old School SkisReplies: 6Last Post: 12-04-2008, 10:13 AM
By Fercho in forum Yamaha PWC Performance (2-stroke)Replies: 17Last Post: 02-06-2008, 05:08 PM
By PHISH in forum Yamaha PWC Performance (2-stroke)Replies: 13Last Post: 06-20-2006, 11:04 AM