Reply
 
Thread Tools Search this Thread
 
Old 08 June 2010, 12:57   #11
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,645
RIBase
Quote:
Originally Posted by jyasaki View Post

I would strongly suggest the latter.
So would I.
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Old 08 June 2010, 14:57   #12
Member
 
Country: UK - England
Town: Salisbury
Boat name: TORA
Make: Tornado
Length: 4m +
Engine: Yamaha 60hp
Join Date: Jan 2009
Posts: 130
Send a message via Skype™ to TUFTY
What if?

Assuming the pressure test fails, what does the repair involve in terms of spares cost and degree of engine dismantling?

Thanks for your continued advice


Paul
__________________

__________________
TUFTY is offline   Reply With Quote
Old 08 June 2010, 15:08   #13
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,645
RIBase
Quote:
Originally Posted by TUFTY View Post
Assuming the pressure test fails, what does the repair involve in terms of spares cost and degree of engine dismantling?

Thanks for your continued advice


Paul

Depends which seal is gone. It might be cheaper to change the lower unit for another 2nd hand one,or it might be a 45 minute job.
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Old 09 June 2010, 10:36   #14
Member
 
Country: UK - England
Town: Salisbury
Boat name: TORA
Make: Tornado
Length: 4m +
Engine: Yamaha 60hp
Join Date: Jan 2009
Posts: 130
Send a message via Skype™ to TUFTY
continued....

I am going to get some "cheap" transmission oil and fill the gear case then run the engine again and see if water gets in.

Should both the top and bottom screw plugs have fibre washers ?

I found the lower one has a fibre washer but the upper one has a copper washer and O ring.
Is this correct?


Thanks again

Paul
__________________
TUFTY is offline   Reply With Quote
Old 09 June 2010, 11:15   #15
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,645
RIBase
Quote:
Originally Posted by TUFTY View Post
I am going to get some "cheap" transmission oil and fill the gear case then run the engine again and see if water gets in.

Should both the top and bottom screw plugs have fibre washers ?

I found the lower one has a fibre washer but the upper one has a copper washer and O ring.
Is this correct?


Thanks again

Paul
Either works, as long as done up right. It's supposed to be a fibre washer on both plugs though,so it's a small possibility if the copper washer had been reused that your leak was round it.Unlikely though in the quantities you described,and there'd probably be no clear water in there.
Replace the fibre washers every time you change the gear oil.

If I were to hazard a guess, I'd say it was probably the propshaft seal gone.


You'll need to run it up on muffs with the 'cheap' oil in first then drain it to get rid of the remains of the emulsified crap first (There WILL be some in there still)or you won't be able to tell. It also means if you've got clear water or really bad emulsification in there after running on muffs it's the driveshaft seal that's had it.
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Old 09 June 2010, 11:46   #16
Member
 
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,298
Quote:
Originally Posted by Nos4r2 View Post
...It also means if you've got clear water or really bad emulsification in there after running on muffs it's the driveshaft seal that's had it.
__________________
Downhilldai is offline   Reply With Quote
Old 09 June 2010, 11:53   #17
Member
 
Country: UK - England
Town: Salisbury
Boat name: TORA
Make: Tornado
Length: 4m +
Engine: Yamaha 60hp
Join Date: Jan 2009
Posts: 130
Send a message via Skype™ to TUFTY
I like your thinking

Good advice, I will run up on muffs (that will please the neighbours!!!)
and see what happens.

I suspect the propshaft seal as well.

I will post the outcome later.

Thanks

Paul
__________________
TUFTY is offline   Reply With Quote
Old 09 June 2010, 12:59   #18
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,645
RIBase
Quote:
Originally Posted by TUFTY View Post
Good advice, I will run up on muffs (that will please the neighbours!!!)
and see what happens.

I suspect the propshaft seal as well.

I will post the outcome later.

Thanks

Paul
If you suspect the propshaft seal and it's bad enough you can smell it, make sure anywhere that oil can spray is covered. It'll blow from the exhaust, plus be sprayed everywhere by the prop.
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Old 10 June 2010, 07:14   #19
Member
 
Country: UK - England
Town: Salisbury
Boat name: TORA
Make: Tornado
Length: 4m +
Engine: Yamaha 60hp
Join Date: Jan 2009
Posts: 130
Send a message via Skype™ to TUFTY
Look like drive shaft seal ?

Ran the engine up on muffs this morning no oil spraying from exhaust.

Dropped the oil and it is milky with water so I suspect the drive shaft seal.

Also there was a small quantity of oily goo that came out of the hole on the leading face of the leg at cavitation place level.

What do you think?

Thanks

Paul
Attached Thumbnails
Click image for larger version

Name:	P1030059.JPG
Views:	62
Size:	154.0 KB
ID:	51812   Click image for larger version

Name:	P1030060.JPG
Views:	60
Size:	133.5 KB
ID:	51813  
__________________
TUFTY is offline   Reply With Quote
Old 10 June 2010, 09:25   #20
Member
 
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,298
Drive shaft seal. Drop the leg and remove the water pump.
__________________

__________________
Downhilldai is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 20:47.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.