• Welcome to Jetboaters.net!

    We are delighted you have found your way to the best Jet Boaters Forum on the internet! Please consider Signing Up so that you can enjoy all the features and offers on the forum. We have members with boats from all the major manufacturers including Yamaha, Seadoo, Scarab and Chaparral. We don't email you SPAM, and the site is totally non-commercial. So what's to lose? IT IS FREE!

    Membership allows you to ask questions (no matter how mundane), meet up with other jet boaters, see full images (not just thumbnails), browse the member map and qualifies you for members only discounts offered by vendors who run specials for our members only! (It also gets rid of this banner!)

    free hit counter
  • Reminder of the Thrust Vector and Lateral Thruster group buy through JetBoatPilot.....you only have Until AUGUST 31st. to get in on this group buy.
    With a Maximum discount of 35% this is the highest discount you can get on these, so don't miss out!
    So if you are looking to improve your steering-either forwards or in reverse.....this sale may be for you!  

    Thank you Will @jetboatpilot for offering this exclusively to JETBOATERS.net members!

    (You can click the X to the right to dismiss this notice)

Nikokrzynowek

Member
Messages
29
Reaction score
9
Points
12
Location
Connecticut
Boat Make
Yamaha
Year
2007
Boat Model
AR
Boat Length
21
Just about to pull both engines out of my 2007 Yamaha ar210. I believe both engines were not winteriezed after sitting outside in New England for 5 years and the blocks are cracked. Just purchased a used crank case from eBay. Had some questions before I drop everything off at the machine shop. Can I buy oversized pistons for these motors? If so where. Not sure if the new / used blocks will need to be bored or honed. Or are these cases sleeved? Can I buy oversized bearings for crank or rods? A crank looks to be about $2k and if there’s some light scuffing on the mains I’d like to just have the crank turned if I can just get over sized bearings. Thank you for the help guys, partzilla and boats.net only seem to have oem standard sized. Besides that I just ordered 2 engine rebuild kits (gaskets) from partzilla. Has anyone rebuilt these engines before and know if there’s more gaskets, o rings, or anything I will also need to rebuild and reinstall these engines?
 
These engines are sleeved but they can be bored, WSM sells oversized pistons and other parts. SBT is another source for parts.
 
Back
Top