Notices

Corrosion on engine bolts

Old 02-03-2017, 05:13 PM
  #41  
Senior Member
 
Join Date: Aug 2016
Location: Holland, Michigan
Posts: 1,084
Default

My shop has a customer that requires all steel be coated/plated for rust prevention. As we build custom machines for them, we take all the steel to get it zinc plated, or electroless nickel plated, or galvanized, or chromed, whatever works best. Some of it is very high-strength steel, some is hardened, a lot of it is threaded. It only costs about $200 to have a bucket of parts plated, and there are shops all over the place that do it. So I'm not convinced they are doing their best, but hopefully they are.
30West is offline  
Old 04-10-2017, 06:55 AM
  #42  
Senior Member
 
Join Date: Dec 2007
Location: New Jersey
Posts: 255
Default

Glad I found this thread. Have the same issue on a 2014 F150. Did warranty cover it for everyone?
fishypete is offline  
Old 03-15-2019, 01:32 PM
  #43  
Admirals Club
 
Join Date: Oct 2013
Posts: 62
Default

I know this an old tread-but I have the same issue and when I was at the boat show this year I noticed the 2019 Yamaha 150 came with cap nuts .So I checked with Andy at Sim and he told me this is a brand new part not even in stock but will fit the old bolt as that part number has not changed for the bolt-the new part number for the cap nut is 90176-14003-00
So only took Yamaha several years to fix the problem..................
pool boy is offline  
Old 03-15-2019, 01:45 PM
  #44  
Senior Member
 
Join Date: Jan 2014
Location: Tuckerton Beach, N.J.
Posts: 1,044
Default

Originally Posted by commuter boats View Post
Wrong bolts
This X 2
Clamdigger II is online now  
Old 03-15-2019, 02:45 PM
  #45  
Senior Member
 
Join Date: Dec 2014
Location: Land down under
Posts: 8,923
Default

Originally Posted by pool boy View Post
I know this an old tread-but I have the same issue and when I was at the boat show this year I noticed the 2019 Yamaha 150 came with cap nuts .So I checked with Andy at Sim and he told me this is a brand new part not even in stock but will fit the old bolt as that part number has not changed for the bolt-the new part number for the cap nut is 90176-14003-00
So only took Yamaha several years to fix the problem..................
The part is in stock. In Japan. About a days flight away via Fedex.

Is it the presumption that some type of sealant will be used to try and prevent water migration between the outer threads of the bolt and the inner threads of the crown nut?

Did you notice that the crown nut is only used on the lower mount bolts? And on only certain VF150 and F150 models? So has the problem only been partially cured?
alloyboy is offline  
Old 03-15-2019, 05:51 PM
  #46  
Senior Member
 
Join Date: Jun 2008
Location: Ozona Fl
Posts: 2,966
Default

Originally Posted by Tom W Clark View Post
Those boats are not the bolts that hold the motor to the transom.

Those bolts are rusting because they are not stainless steel.

They are not stainless steel because stainless steel is not strong enough for this application.

They are Grade 8 bolts.

This^ and the rust is petty shit. Go find your next culprit that could leave you stranded and focus on that.
BigNasty is offline  
Old 03-17-2019, 07:52 PM
  #47  
Senior Member
 
Join Date: Jan 2010
Location: Back in suzhou in China again
Posts: 3,570
Default

Wd 40 !!
tunnles is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread