Thread: Engine alignment question
05-29-2014, 08:27 PM #1
Engine alignment question
Got a '13 Tx-260 I'm working on.
I see that Sea Doo recommends no more than 5mm of shims be used on any given mount. My question is: Did anyone ever use more in order to achieve proper alignment. It's looking like I need 7mms on each side of the rear to get this thing to line this thing up properly...
The ski went through a carbon seal @ 60 hours, and was out be quite a bit...
05-29-2014, 08:40 PM #2
if it needs 7mm, well it needs 7mm
looks like brp cant build um right at the factory
05-29-2014, 09:27 PM #3
Funny thing is, they say 5mm max- but there was 4 (1.3 mm) shims under the front mount from the factory.
05-29-2014, 09:48 PM #4
I have about 6-7mm of shims under my rear mounts on my 12 px.
I ended up with washers between the hull inserts and mount plate. Then a shim between mount and plate.
05-29-2014, 10:15 PM #5
You might remember this thread: http://www.greenhulk.net/forums/showthread.php?t=187908
Bottom line, I would remove all shims front and rear and start over, see how far you are off. Add what ever it takes to get it right. Once it is aligned you will see no more vibration, excessive wear ring wear, gain some rpm, and no more carbon ring issues. Total BS that we have to fix BRP sloppy quality control……once corrected just ride and have fun!
05-29-2014, 10:29 PM #6
- Join Date
- Dec 2006
- Crest Hill, IL
Vman, it takes what it takes...
When I transferred all my stuff over to a new hull, I installed a fresh new shoe. Once I got it PERFECT (took many dry fits), I knew that the motor was gonna require a little more than just the normal shims.
I actually have 4 shims under the front mount, and a large, thick stainless washer between the front Piranha mount and the motor mount...WAY more than what was in the old hull I took it out of (only 3 shims)...The rear only has one shim per side....Just goes to show you that even the mounting points could be part of the equation...
So do what it takes to make it right...
HOWEVER, you should always start with the shoe and work forward....I consider the shoe the foundation, if its not right, everything will be off...
05-30-2014, 02:57 AM #7
I purchased some Rhaas base plates fir $15 ea. they are 10mm. Cutting some 6mm plates also.
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