Installing B-pipe, ran into problems...need help

[rwsubie]

Like the title states, pulled off the manifold and believe I've found a broken motor mount. When I lift up on the motor just with my hands, one rubber mount is separated from the hull. It lifts up much more than the other three. The question is--Do I need to replace all 4 mounts or can I get away with just replacing the one? This is my first go-round with anything motor related, so I'm a bit hesitant. (Flame suit on)

The next question is, now that I've got everything off, and I won't be riding for a few weeks or so, should I just go ahead and pull the cylinders and have them ported and polished? I don't know when I'll really feel like pulling everything again. Is it worth it?

Mods so far: UMI steering system, footholds, -2" pole, skat trak prop (b-pipe tomorrow!!)

100% surf riding (wilmington, NC)

Thoughts?

 

[Matt_E]

I would personally replace only the broken motor mount, but I am a cheap bastard.
Inspect the other three mounts for signs of damage and replace them as needed.

Porting the cylinder is a nice increase in power. I'd say go for it. Find yourself a reputable shop to do it, so that you'll have help tuning the motor when it's done.

 

[Boris]

If you are willing to spend the cash on a port job why not get 4 new OEM motor mounts ?

If one broke the chances are good that another will let go soon.

How's your top end ?
If low hour and in top shape than port away, why not.

 

[steveyz250fpilot]

If it ain't broke, don't fix it. :woot:

 

[Shonuff]

Exactly, replace just the one.

 

[WFO Speedracer]

Its easy enough to check install a long bolt in the threaded hole on the mount,put some serious leverage on it,if it snaps its bad or at least after it snaps it is.

 

[rwsubie]

Thanks for the feedback. Money wasn't really the deciding factor in whether or not to replace the mounts, I chalk that up to my laziness. I also really have no idea what a port & polish would run. The ski isn't really low hours-it's an '05, but it's just seen use (abuse) in '07 and '08. Would the P&P show significant gains in power or should I hold off, wait till she craps out and then get get a built motor?

I have a feeling that after the b-pipe install I'll be wanting a little more performance-wise....

 

[steveyz250fpilot]

Gimme your address. I think I have an extra motor mount around somewhere. I need to ship something out tomorrow or Tuesday anyways.

 

[ryan]

change them all . your in salt water and surf only. the rest of them are bad 2. shafts are much more money then mounts. i change mine ever 2 years no matter what. most of these guys never seen big waves and have no clue what your dealing with.

 

[sflsurfrider]

... its a no-brainer.


change all 4 mounts and port your cylinders if money isnt an issue....



send them to steve at www.watercraftfactory.com he does a killer job (hes ported 5 of my cylinders), killer prices and the right equipment to do the job.

 

[Kennay]

When I only needed one, I went ahead and bought 4 brand new oem's with kenney keepers. It was on a new build though.

 

[ryan]

or you will be like this guy
http://www.x-h2o.com/threads/50382

 

[FlightPlanDan]

Motor mounts are a "disposable item". They will break/fail whenever. You can ride flat water or go big in the surf....
I got tired of buying 4 at a time. Now I buy 4 at a time but install one at a time...always a spare in the box. If you have a B-pipe, keep an eye on the forward port side (left) mount. The pipe makes it tuff to see/feel if it's o.k.
Wamiltons sells a mount that is claimed to be better than OEM for about the same price. I don't know...but I bought them and they have lasted 2 seasons. (more than I got out of the OEM)

 

[rwsubie]

Thanks for all of the feedback. With a little help from a friend (thanks yz250fpilot), the motor mount issue is now fixed. B-pipe installation is complete. If I would have known what went into that installation, I would have gone B-pipe before footholds. Those things are a pain in the a$$.

Now I just need to get those carbs tuned. Any advice? I'm contemplating going to a shop and having the carbs tuned "professionally". I've installed footholds and a b-pipe and I don't know if I have the knowledge to tune the carbs. I've read up on the forums, but am still hesitant. Thoughts?

 

[FreestyleFreak]

Thanks for all of the feedback. With a little help from a friend (thanks yz250fpilot), the motor mount issue is now fixed. B-pipe installation is complete. If I would have known what went into that installation, I would have gone B-pipe before footholds. Those things are a pain in the a$$.

Now I just need to get those carbs tuned. Any advice? I'm contemplating going to a shop and having the carbs tuned "professionally". I've installed footholds and a b-pipe and I don't know if I have the knowledge to tune the carbs. I've read up on the forums, but am still hesitant. Thoughts?

I would take it to a shop since you arent familiar with carbs.Tuning is kinda a major factor in it running good.

 

[Matt_E]

If you have not done so already, read the Mikuni SBN manual.
http://www.mikuni.com/pdf/sbn_manual.pdf

I would not trust the run-of-the-mill bike shop to tune my Superjet.

 

[THRUST]

change a minimum of the other one on the same side . but i would go all four on my ski because like other said once one goes they will all go and when they go they mat take your new one with it