Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 26-07-2013, 16:59   #151
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by sailorchic34 View Post
Introducing Bubba, My new socket. If you remove the crankshaft from a Yanmar GM series block, your going to need Bubba. That is a 36 mm really deep 3/4" drive socket.

I think it looks pretty good. Sweet. My very first fabricated tool. Great welder and practically right next door.
nice. Just wanted to point out - if one wants to enjoy the process of working on any mechanical device one has to accept that part of the process is fabricating special tools - its a buddhist sort of thing - if you approach something thinking you'll have a nice straight forward fiddle with your toolbox residents and then get cranky when the inevitable special tool problem arises, you'll probably hate every minute from then on. I allow an open-ended time scale to anything i do these days - makes it much more enjoyable, and very often theres something unforeseen that adds a couple of days to the schedule, much better if one is prepared for it...
__________________

__________________
charliehows is offline   Reply With Quote
Old 26-07-2013, 18:30   #152
Registered User
 
brutb's Avatar

Join Date: Feb 2011
Location: Cocoa, FL
Boat: Wittholz 39' Cutter by Kanter, CSY 37 Cutter
Posts: 598
Images: 4
Re: I was Bored so Pulled the Head on my Yanmar

SailorChic, check your email for another who wishes to add to your overhaul kitty(ie stress removal account) or pm me with your friends email.
Cheers-and a good stiff brush and lotsa TSP and your engine compartment will be sweet smelling and with a coat of lite gray paint it will be ship shape again..
__________________

__________________
brutb is offline   Reply With Quote
Old 26-07-2013, 19:21   #153
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,815
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by brutb View Post
SailorChic, check your email for another who wishes to add to your overhaul kitty(ie stress removal account) or pm me with your friends email.
Cheers-and a good stiff brush and lotsa TSP and your engine compartment will be sweet smelling and with a coat of lite gray paint it will be ship shape again..
BrutB, Thank you!.

Actually WD40 does wonders for cutting through grease and crud. I did the first pass at cleaning the bilge today. It already looks so much better. Going to do a final bilge cleaning monday and tusday. Actually the blue gray paint that's down looks pretty good. Guess that protective crud coating helped save the paint.
__________________
sailorchic34 is offline   Reply With Quote
Old 27-07-2013, 01:59   #154
Registered User

Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 1,375
Images: 7
Re: I was Bored so Pulled the Head on my Yanmar

Hi again Sailorchic34,

when I read that Sara Palin not only shot the moose, she dressed it, loaded it on the ute (Australian for pickup) and carted it home then knocked up delicious moose stew for 30 people all in about 5 minutes I thought here is my ideal woman. You have replaced her in my esteem.

I would not replace any of the parts which are still within the manufacturers wear range range, as it appears most of yours are.

The proper meaning of the term "overhaul" is that only those parts of a machine which are found to be worn beyond the manufacturers tolerance for wear are replaced. Be mindful that the high risk period for new parts is generally whilst they are being run in and that if they survive this they go on to lead long happy lives. Consequently replacing good, run in parts, is often quiet harmful to the machine as both the new part and that which it works in contact are put through the run in process. In spite of the problems you are having at 1100 hours the engine is just properly run in.

Hand cleaner is often a very good remover of recalcitrant grease, I regularly use it for the cooking range hood as it works better than anything else I have ever tried.
__________________
RaymondR is offline   Reply With Quote
Old 27-07-2013, 10:23   #155
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,815
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by RaymondR View Post
In spite of the problems you are having at 1100 hours the engine is just properly run in.
That is what I'm finding too. At 1100 hours it was just getting broken in The pistons and rings in the other two cylinders have no measurable wear. Everything I've measured so far comes up within the new install wear limits.

The big end bearings look find, except where some blonde chic buggered up one removing the piston. Its hard to get good help.

The crank will come out with the intermediate bearings attached. The aft bearing comes out with the aft flange support. I just need to be careful that the front crank bearing is not damaged with the crank removal.
__________________
sailorchic34 is offline   Reply With Quote
Old 29-07-2013, 08:37   #156
Registered User

Join Date: Jan 2011
Location: PNW
Boat: custom teak ketch 48' Eastwind
Posts: 607
Images: 9
Re: I was Bored so Pulled the Head on my Yanmar

I'm confused, why are you pulling the crank shaft? It sounds to me like you have a busted ring. Why not just pull the piston, hone the cylinder, replace the rings and bolt it back together?
Must be something I missed?
__________________
Geoduck is offline   Reply With Quote
Old 29-07-2013, 08:57   #157
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,815
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by Geoduck View Post
I'm confused, why are you pulling the crank shaft? It sounds to me like you have a busted ring. Why not just pull the piston, hone the cylinder, replace the rings and bolt it back together?
Must be something I missed?
That was my original idea. But the damage to the cylinder wall is too extensive for honing. I had two "car guys" both with engine rebuilding experience and both said it needed to be bored. Rather then having all three cylinders bored 10 or 20 over (the older car guy said it might need more then 10 over) I'm having a sleeve machined into #3 hole. Then just light honing on #1 and #2.

As luck would have it, the block goes to the machinist today. I was able to remove the last "second" crank nut after I had the special socket made. Then it was easy removing the aft carrier flange and pull the crank and intermediate bearings out the back. Plus removed the oil pump.

So its down to a bare block. Now just have to order the parts to make it new again. Going together will be slower still as everything has to be measured or torqued.

I'm guessing most folks just buy a new engine as the amount of labor required, even if they are twice as fast as me, would be a lot. The yanmar mechanic in sausalito could not remember the last time he had to pull a crank. He said that would be a very expensive job. Lucky for me I work cheap.
__________________
sailorchic34 is offline   Reply With Quote
Old 29-07-2013, 10:22   #158
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,366
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by Geoduck View Post
I'm confused, why are you pulling the crank shaft? It sounds to me like you have a busted ring. Why not just pull the piston, hone the cylinder, replace the rings and bolt it back together?
Must be something I missed?
I wondered that but then realized it has to be bored to sleeve it.... hope they find that lightweight bliok doesnt have enough meat when they start boring. Sorry... shouldnt have brought that up....
Why just not use cyl 3? then you'll have a 2GM... :>)
__________________
"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 29-07-2013, 11:19   #159
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,815
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by Cheechako View Post
I wondered that but then realized it has to be bored to sleeve it.... hope they find that lightweight bliok doesnt have enough meat when they start boring. Sorry... shouldnt have brought that up....
Why just not use cyl 3? then you'll have a 2GM... :>)
I'm a little concerned about the sleeve, but the machinist did look at the block first.

I also have given some thought to using the 3gm with one piston removed as a 2GM. But while #1 and #3 are at roughly 180 degrees, #2 was at 90 degrees and I think could have had too much vibration. Plus I would have been over proped then too. That still remains my fall back actually.
__________________
sailorchic34 is offline   Reply With Quote
Old 29-07-2013, 11:23   #160
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,366
Re: I was Bored so Pulled the Head on my Yanmar

I've heard of it being done before.... well... we'real waiting with baited breath.... hope it turns out well.... You're amazing....
__________________
"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 29-07-2013, 17:08   #161
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,815
Re: I was Bored so Pulled the Head on my Yanmar

Well the block has been dropped off to the machinist. It should be ready by the end of the week.

Tomorrow will be clean the bilge day again. I had given it a first pass last Friday, but its not quite clean enough. So hopefully I'll get that done tomorrow. Plus soak, degrease and clean all the bolts and bits tomorrow.
__________________
sailorchic34 is offline   Reply With Quote
Old 29-07-2013, 17:37   #162
Registered User

Join Date: Mar 2010
Location: Seattle
Boat: Krogen 58' Xiao Xiu
Posts: 276
Send a message via MSN to JayCall
Re: I was Bored so Pulled the Head on my Yanmar

Sailorchic-I have been following your latest adventure, and to echo many here-you are remarkable.

Plus, I think it safe to say that, when finished, you will have the only purple Yanmar in existence!

Good Luck with the reassembly.
__________________
JayCall is offline   Reply With Quote
Old 29-07-2013, 17:47   #163
Registered User

Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 1,375
Images: 7
Re: I was Bored so Pulled the Head on my Yanmar

You are doing great, just keep at it and if it starts to get on top of you don't force the pace, take a break and then go back at it. When it's back in the boat and successfully test run you will feel well earned satisfaction for your achievement in salvaging the engine.
__________________
RaymondR is offline   Reply With Quote
Old 29-07-2013, 18:03   #164
Registered User
 
Teknav's Avatar

Join Date: Jul 2012
Location: Texas - USA
Boat: Twin Otter de Havilland Floatplane
Posts: 1,838
Re: I was Bored so Pulled the Head on my Yanmar

...once the project is successfully completed, she can charge for her services in rebuilding diesel engines...Many a time a hobby turns into a pro, with good earnings... Good luck!

Mauritz
__________________
Retired - Don't Ask Me To Do A Damn Thing!
Teknav is offline   Reply With Quote
Old 29-07-2013, 18:12   #165
Registered User

Join Date: Apr 2012
Posts: 570
Re: I was Bored so Pulled the Head on my Yanmar

Quote:
Originally Posted by RaymondR View Post
You are doing great, just keep at it and if it starts to get on top of you don't force the pace, take a break and then go back at it. When it's back in the boat and successfully test run you will feel well earned satisfaction for your achievement in salvaging the engine.
I have always put them on a temp bed on the pier or in the shop with temp fuel and cooling water piped up and done a test run before putting it back in the hole. If it runs well on the pier it will run well on the boat.
__________________

__________________
fryewe 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 10:28.


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.