Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 06-08-2013, 10:17   #241
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,358
Re: I was Bored so Pulled the Head on my Yanmar

A little bit of a side trip.... but... if you install an electric pump, do you install it in a side bypass with two 3 way valves or can the engine pump draw though it when it's off?
__________________

__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is online now   Reply With Quote
Old 06-08-2013, 13:29   #242
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,812
Re: I was Bored so Pulled the Head on my Yanmar

Me I would install the electric pump inline as the extra valves and such give more potential leak points. i would get one that allows draw through. So easy that way..

Well the engine is back together. Just need to install the alternator which will go on tomorrow.

Only blonde thing I did was install the engine mounting brackets upside down. But THAT'S fixed.

I also changed out the prop packing gland. It did not really need to be changed but access was really easy without the v-drive in the way. That was easy too. Only a small stream of water came in and the bilge pump did not even come on. I ran it on manual to get the water out of the bilge afterwards.

Just need to remove the old exhaust hose. New hose should be in later this week.

So the great blonde diesel engine rebuild is just about over. So Thursday morning the engine get's reinstalled. Though it will be another day or two before the engine is ready to start. It will have taken about a month from start to end to get all the work done.

The engine tear down was really messy. The installation was not bad at all. I still can't believe I did it all. I did have some help on the disassembly. But I did the engine build all by myself. Pretty neat.
__________________

__________________
sailorchic34 is offline   Reply With Quote
Old 06-08-2013, 13:35   #243
Registered User
 
Wrong's Avatar

Join Date: Jul 2013
Posts: 1,702
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by sailorchic34 View Post
I also changed out the prop packing gland. It did not really need to be changed but access was really easy without the v-drive in the way. That was easy too. Only a small stream of water came in and the bilge pump did not even come on. I ran it on manual to get the water out of the bilge afterwards.
Would you mind telling how you used the bicycle tube to accomplish replacing the packing?

Thanks.
__________________
Wrong is offline   Reply With Quote
Old 06-08-2013, 16:54   #244
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,812
Re: I was Bored so Pulled the Head on my Yanmar

Oh the bike inner tube was only if you had a large inflow of water when the packing nut was removed. Mine was just a trickle so I did not need it. Had it been a larger flow rate, I would have wrapped the inner tube around the stern tube / prop shaft to slow to flow down. I have the packing gland type, where the packing is inside the nut.

Some packing glands have the packing around the stern tube and a two nut packing gland that compresses the packing inside the stern tube. For that type, you just move fast.

But in the 5 minutes it took me to remove the old packing and install the new packing and reinstall the packing gland nut I only had a few gallons of sea water drip into the bilge. The water did not even get to the float switch
__________________
sailorchic34 is offline   Reply With Quote
Old 06-08-2013, 17:05   #245
Registered User
 
Wrong's Avatar

Join Date: Jul 2013
Posts: 1,702
Re: I was Bored so Pulled the Head on my Yanmar

Thanks! I have the type with the packing inside around the tube. Don't know that I'll ever try replacing it while in the water. Anyone who've successfully replaced packing inside the tube while boats in the water?
__________________
Wrong is offline   Reply With Quote
Old 06-08-2013, 17:44   #246
Moderator
 
Boracay's Avatar

Cruisers Forum Supporter

Join Date: Feb 2004
Location: Pelican Bay, Great Sandy National Park
Boat: Steel Roberts Offshore 44
Posts: 5,175
Images: 18
Re: I was Bored so Pulled the Head on my Yanmar

My first electric fuel pump died after a few minutes, the second met it's fate after causing obscure faults for a few months and being caught leaking diesel into the bilge.

I put in a Walbro FR 22 last year. Still ticking strongly. Worth the few dollars extra.
__________________
Rust never sleeps
Boracay Blog.
Boracay is offline   Reply With Quote
Old 06-08-2013, 18:03   #247
Senior Cruiser
 
Sailmonkey's Avatar

Cruisers Forum Supporter

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 5,772
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by Wrong View Post
Thanks! I have the type with the packing inside around the tube. Don't know that I'll ever try replacing it while in the water. Anyone who've successfully replaced packing inside the tube while boats in the water?
Sure, there's just not that much water that comes in.....cut your flax ahead of time and you only have a trickle of water for the short time that all of the packing is out.
__________________
Sailmonkey is online now   Reply With Quote
Old 06-08-2013, 18:28   #248
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,812
Re: I was Bored so Pulled the Head on my Yanmar

OK I need confirmation from someone who has a 3gm30 engine. There are two types of banjo bolts on the engine. Small orifice and large orifice. The large orifice are marked with a 7 on the bolt head The service manual does not mention the size / orifice difference. I'm thinking that the oil banjo bolts are the small ones and fuel are the large ones.

So I need someone to look at the banjo bolt on the oil connection to the head and see if it has a 7 embossed on the nut face or if its unmarked. My guess is the big orifice banjo bolts with "7" marked on the head is for the fuel. I'm 70% sure that is the case. Just need someone with a 3gm to confirm that for me...
__________________
sailorchic34 is offline   Reply With Quote
Old 06-08-2013, 18:46   #249
Registered User
 
dandrews's Avatar

Cruisers Forum Supporter

Join Date: Nov 2010
Location: Shirley, MA
Boat: Bristol 34
Posts: 235
SC... Just took a look at my 3GM sitting in the garage ready to be re-installed, and the bolt with a 7 on it is connected directly to the fuel pump. Other bolts in the fuel lines have M's on them. All the oil lines bolts have no markings. Hope this helps.

Don
__________________
dandrews is offline   Reply With Quote
Old 06-08-2013, 18:55   #250
Registered User

Join Date: May 2009
Location: Massachusetts
Boat: 40' Silverton Aftcabin with twin Crusaders
Posts: 1,589
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by sailorchic34 View Post


The engine tear down was really messy. The installation was not bad at all. I still can't believe I did it all. I did have some help on the disassembly. But I did the engine build all by myself. Pretty neat.

Proud of you Chic!!!
__________________
foggysail is offline   Reply With Quote
Old 06-08-2013, 19:10   #251
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,812
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by dandrews View Post
SC... Just took a look at my 3GM sitting in the garage ready to be re-installed, and the bolt with a 7 on it is connected directly to the fuel pump. Other bolts in the fuel lines have M's on them. All the oil lines bolts have no markings. Hope this helps.

Don
Thank You Don!. I thought it was that way. I had just took them all off and put them in the same baggy. DOH!. Feeling good that I'll not be starving the rockers...
__________________
sailorchic34 is offline   Reply With Quote
Old 06-08-2013, 19:12   #252
Registered User
 
dandrews's Avatar

Cruisers Forum Supporter

Join Date: Nov 2010
Location: Shirley, MA
Boat: Bristol 34
Posts: 235
Just goes to show you they drink more diesel than oil ;-)
__________________
dandrews is offline   Reply With Quote
Old 06-08-2013, 19:21   #253
Senior Cruiser
 
atoll's Avatar

Cruisers Forum Supporter

Join Date: Mar 2010
Location: gettin naughty on the beach in cornwall
Boat: 63 custom alloy sloop,macwester26,prout snowgoose 37 elite catamaran!
Posts: 9,311
Images: 75
Re: I was Bored so Pulled the Head on my Yanmar

i have 2 ysb 8's sitting in my workshop if you need thread sizes for your banjo fittings that no doubt use the same size
__________________
my catamaran building project updates http://www.cruisersforum.com/forums/...36#post2502136
atoll is offline   Reply With Quote
Old 06-08-2013, 20:12   #254
Registered User
 
lonesoldier0408's Avatar

Join Date: Jun 2013
Boat: Luger, Southwind, 21
Posts: 356
Thank You Don!. I thought it was that way.

Just getting into a two stroke...OMGoodness..! :O

Click image for larger version

Name:	ForumRunner_20130806_221058.jpg
Views:	301
Size:	126.0 KB
ID:	65176
__________________
lonesoldier0408 is offline   Reply With Quote
Old 06-08-2013, 21:25   #255
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,812
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by lonesoldier0408 View Post
Thank You Don!. I thought it was that way.

Just getting into a two stroke...OMGoodness..! :O

Attachment 65176
That looks, hum... interesting. is that piston really scored that bad on the side???
__________________

__________________
sailorchic34 is offline   Reply With Quote
Reply

Tags
head, yanmar

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yanmar 4LH/HTE Head Gasket Replacement terrymccann Engines and Propulsion Systems 8 09-01-2012 22:32
Blown Head Gasket on Yanmar 4JH ? Conch Cruzer Engines and Propulsion Systems 11 13-11-2011 23:36
Want To Buy: Cylinder Head for Yanmar petercreese Classifieds Archive 0 06-10-2011 20:09



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:16.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.