Reply
 
Thread Tools Search this Thread
 
Old 05 April 2011, 13:02   #1
jvb
Member
 
Country: Germany
Town: hamburg
Boat name: Jenny
Make: SR 5.4
Length: 5m +
Engine: Suzuki DT65+Merc90
Join Date: Aug 2009
Posts: 45
snaring sound on DT65

dear Forum,
during winter some silly bastards have obviously thrown some rocks near my mooring - just below surface...
so last week i shredded the prop of my Suzuki DT65. all 3 blades roughly bitten.
so i bought a new one and it ran fine first.

but now i have a strange new snaring sound when in gear. in neutral it runs fine and only shakes frequently when on very low revs.
when in gear it makes a snaring sound, getting faster when boat goes faster.
a couple of days before that i had a soft squeeking sound when in gear and going slow. didnt sound too nice, but also not too bad to worry.

the new snaring sounds very worrying.

it would be great to get advice on what to do.

is there a valve where i can enter oil or fat, or did i kick the shaft or anything mechanical?
i hope its nothing mayor - the DT65 is such a reliable workhorse. would be a shame.

thank you for your helpful advice
jan
__________________

__________________
jvb is offline   Reply With Quote
Old 05 April 2011, 14:14   #2
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
Is the propshaft running true?
__________________

__________________
Downhilldai is offline   Reply With Quote
Old 05 April 2011, 14:16   #3
jvb
Member
 
Country: Germany
Town: hamburg
Boat name: Jenny
Make: SR 5.4
Length: 5m +
Engine: Suzuki DT65+Merc90
Join Date: Aug 2009
Posts: 45
yes - prop running

Quote:
Originally Posted by Downhilldai View Post
Is the propshaft running true?
yes, boat goes to normal speed. just the snaring gets faster and it just doenst sound healthy.
__________________
jvb is offline   Reply With Quote
Old 05 April 2011, 15:46   #4
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 jvb View Post
yes, boat goes to normal speed. just the snaring gets faster and it just doenst sound healthy.
No throw in the propshaft?
__________________
Downhilldai is offline   Reply With Quote
Old 06 April 2011, 16:48   #5
jvb
Member
 
Country: Germany
Town: hamburg
Boat name: Jenny
Make: SR 5.4
Length: 5m +
Engine: Suzuki DT65+Merc90
Join Date: Aug 2009
Posts: 45
Quote:
Originally Posted by Downhilldai View Post
No throw in the propshaft?
sorry for my lacking english.
i guess you mean whether the shaft is warped.
how can i check this?
take off prop and have it running?

thank you for your help!
__________________
jvb is offline   Reply With Quote
Old 06 April 2011, 16:53   #6
Member
 
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,841
Give the bloke a break Bradders. Imagine what "No throw in the propshaft" is likely to throw up when put through Google translate.
__________________
Mollers is offline   Reply With Quote
Old 11 April 2011, 14:46   #7
jvb
Member
 
Country: Germany
Town: hamburg
Boat name: Jenny
Make: SR 5.4
Length: 5m +
Engine: Suzuki DT65+Merc90
Join Date: Aug 2009
Posts: 45
well.
obviously it is something more serious.

i went to the outboard garage today.
he said that the suzuki dt65 s basically old and fine if it runs - but if never properly serviced (like mine) and broken (like mine) then better not to be touched.
is this correct?? i felt it is a solid workhorse.

we tried unmounting the heel an immediately broke the two stainless boltheads. then even with sensitivity handled we broke the corroded aluminium casted piece holding the cone seat.
nice 2.

he then offered a brand new 80hp 4 stroke suzuki instead. or to repair it in a couple of weeks.
nice 3.

so i am a complete amateur to engines.
i feel all stainless parts meeting aluminium cast are pretty corroded and likely to break.
i still dont know where the rattling comes from and the mechanic said he guesses that probably under the engine one bearing might be gone. or the shaft itself.


what do you suggest...???
do a training in engine surgery or buy a new one?
where would i get a decent used one - at this time of the year...?
nice

damn that rock...
__________________
jvb is offline   Reply With Quote
Old 11 April 2011, 15:20   #8
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
If you are having that much problem with corrosion,sell it and buy another one. It is not going to be easy to get to the fault without breaking something.
__________________
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 11 April 2011, 16:29   #9
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
Doesn't sound good. Is the propeller hitting the gearcase?

If that noise is there only when in gear, then you're probably best looking to replace the lower unit with a used one. Repairing the original is likely to cost more than the engine's worth.

The DT65 is a pretty good motor, so would be a shame to scrap it if everything else is ok.

Good luck.
__________________
Downhilldai is offline   Reply With Quote
Old 17 April 2011, 13:46   #10
jvb
Member
 
Country: Germany
Town: hamburg
Boat name: Jenny
Make: SR 5.4
Length: 5m +
Engine: Suzuki DT65+Merc90
Join Date: Aug 2009
Posts: 45
thank you guys,
i managed to unmount the lower unit with some helping heat.
burnt some of the seals but now the reason for the sound is obvious:
the gear set in the transmission lost some teeth.
so on the one hand i am glad to have found the fault - on the other hand i am now trying to get some spare parts.
where should i ask to get the missing parts (attached)?
will they be available from any suzuki workshopp or will it be a disaster to find them online somewhere?
thank you for your help,
jan
Attached Thumbnails
Click image for larger version

Name:	fig033-5565-8897.jpg
Views:	282
Size:	102.5 KB
ID:	58404   Click image for larger version

Name:	fig018-5565-8897.jpg
Views:	131
Size:	50.4 KB
ID:	58405   Click image for larger version

Name:	fig008-5565-8897.jpg
Views:	114
Size:	82.7 KB
ID:	58406  
__________________

__________________
jvb 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 13:54.


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