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296,915 Visits during October 2009.
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531 Topics found.
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Section Topic Details Includes Attachments Notify me of any new messages to this topic.  Replies  Last
 Yanmar:LP Series -  Recommended spares VIEW/REPLY   Notify me of any new messages to this topic. 0  Fri Nov 20 09 10:12 PM
Today
10:12 PM
Level-1 Member Kenr.png   Hi I am finalising the purchase of a Deep V (Black Watch 26) powered by a single Yanmar 6LPA-STZP with just over 600hrs and a new Bravo II leg. To get it from place of purchase to home port will in.....
NO Responses....

 Yanmar:LP Series -  2 Valve failure - less than 100 hours from complete rebuild! VIEW/REPLY   Notify me of any new messages to this topic. 2  Fri Nov 20 09 7:30 PM
Today
12:59 PM
Level-1 Member Go Fish Costa Rica   Well, it happened again. We dropped an intake and exhaust valve and had one of engines completely rebuilt from the pan up. Less than 100 hours from that overhaul we broke a valve bridge and dropped an.....
2 Responses....
Today
01:28 PM
#1 Forums Moderator Tony Athens   Peter, I may be able to offer some insight, but you will have to send me some very clear pictures of all, including the engine in the boat as it´s installed, the exhaust hook-up and routing, inside.....
Today
07:30 PM
#2 Level-1 Member Go Fish Costa Rica   Thank you very much, tony. I guess it can be said that these 6LP-STEs are great engines. All you have to do is fix them. We are searching for a more reliable Cummins B series. We would like to find so.....

 Yanmar:LP Series -  Humming whinning sound from engine VIEW/REPLY   Notify me of any new messages to this topic. 0  Mon Nov 16 09 3:47 AM
Nov 16 2009
03:47 AM
Level-2 Member Aussie Syd   I have 2 Yanmar 6lp-stp 315hp in my Boat with 87 hours use from new, the engines were installed late 2006, recently I noticed getting this noise from one of my engines intermittently only when the eng.....
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 Yanmar:LP Series -  Engine Fuel Filter VIEW/REPLY   Notify me of any new messages to this topic. 5  Sun Nov 15 09 4:26 PM
Nov 13 2009
02:49 AM
Level-1 Member Gon2deep   I just bought a fuel filter for my 6lpa @105.00 which i like to change 2 times a year .not sure why the price went from 60.00 to 105.00. my question is can you change the fuel filter / fuel pump on t.....
5 Responses.... Open/CloseView ALL
Nov 14 2009
04:58 PM
#2 Level-1 Member William A. Bowden   Gon2Deep, I have been using a Wix replacement fuel filter for years on my 6LP´s. The filter is identical to a Yanmar genuine part without the high price. The price is $15 each. Here is a link: http:/.....
Nov 15 2009
12:18 PM
#3 Level-1 Member Rws   The Toyota fuel filter is available at any NAPA auto parts store. RWS
Nov 15 2009
03:29 PM
#4 Level-1 Member Pedro Fundora   When I bought my boat it had a pair of Purolator fuel filters and the engines smoked a little under cruising speed. It was sort of like a steam. I then changed primary filter (Racor 30 micron) and Yan.....
Nov 15 2009
04:26 PM
#5 Level-3 Member Got Diesel   The Napa filter they claim it´s 7 mic.

 Yanmar:LP Series -  Oil Leaking VIEW/REPLY Includes Attachments Notify me of any new messages to this topic. 0  Sun Nov 15 09 12:59 PM
Nov 15 2009
12:59 PM
Level-1 Member Go Fish Costa Rica   6LP STE 315. We´ve developed 2 progressing oil leaks in a recently rebuilt engine. One appears to be coming from or near the head gasket but we are not seeing a spray, the leak presents itself as a dr.....
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 Yanmar:LP Series -  Piston shape 6LP VIEW/REPLY   Notify me of any new messages to this topic. 14  Sun Nov 15 09 9:57 AM
Nov 14 2009
09:09 AM
Level-1 Member Smuggler   Hi This winter I will have a 6LP restored, including reboring of cylinders. This calls for new pistons, that are ridicolously expensive here in europe. It is quite common here to have pistons spe.....
14 Responses....
Nov 14 2009
09:57 AM
#1 Level-1 Member Bace   Hi Erik, I believe the reason for the inverted dome in the pistons is to make room for the valves when the piston in top. Maybe it also has something to with the flow inside the cylinder, but this.....
Nov 14 2009
03:13 PM
#2 Level-3 Member Ski in NC   The piston is probably the most highly engineered part on a modern high output diesel. The bowl is the combustion chamber, and its shape is critical. Cast in lube oil passages cool the top ring area.....
Nov 14 2009
05:27 PM
#3 Level-3 Member Paul Foulston   Erik, The shape of the top of the Yanmar piston is absolutely critical to combustion, known as quiescent chamber, and closely linked to injector spray pattern and pop pressure. Also the technolo.....
Nov 14 2009
05:41 PM
#4 Level-3 Member Got Diesel   I beleave you will not find that piston from Toyota as they never made that engine that HP, I know someone who has looked very hard.
Nov 14 2009
06:14 PM
#5 Level-3 Member Paul Foulston   Hi Tim, We went through the Toyota fork truck dealer as high hp base motor goes though the Toyota industrial, not automotive network. Paul
Nov 14 2009
06:35 PM
#6 Level-3 Member Paul Foulston   Tim, Toyota call the high output 220 kW 4.163cc six pot motor somthing like the 1HD engine family in industrial format. You are quite correct in that the version used in the Land Cruiser has som.....
Nov 14 2009
07:24 PM
#7 Level-1 Member Smuggler   Hi Thanks for all replies, it seems that the 6LP piston shape is more important than i thought. Would it work to replace with Toyota 1HD pistons or only original Yanmar? Here theoriginal yanmars are.....
Nov 14 2009
08:23 PM
#8 Level-3 Member Got Diesel   As I understand there is one 1HD piston that is the same but it´s 17 1/2 to 1 and the Yanmar piston is 16 1/2 to one, so you would need to cut the piston. There seems to be no free lunch.
Nov 14 2009
08:46 PM
#9 Level-3 Member Got Diesel   Paul, what would that do if you used the higher compression piston´s without cutting it. As I also heard some one used a Toyota long block and put the Yanmar hang ons and he said it ran fine.
Nov 15 2009
01:22 AM
#10 Forums Moderator Tony Athens   Although this will not help, as much as I like the 6LP and think it´s really nice engine, I do not consider it a rebuilbable engine..............Why?? This thread says it all.. It´s NOT COST EFFECT.....
Nov 15 2009
01:51 AM
#11 Level-3 Member Got Diesel   Tony, I could not agree with you more, you can rebuild it but you can buy a new one for around $19,000. It´s sad when they make a good rebuildable motor that´s a throw a way ( as I always said with .....
Nov 15 2009
02:07 AM
#12 Forums Moderator Tony Athens   Tim, I wrote this close to 10 years ago.. Nothing has changed at all other than we have new players in the game.. The Cummins B & C still are the most desireable engines ever made for the marine ma.....
Nov 15 2009
02:15 AM
#13 Level-3 Member Got Diesel   The word rebuildable in 1970 and 2009 have different meanings, it´s a whole new world from then. Tim
Nov 15 2009
09:57 AM
#14 Level-1 Member Smuggler   Thanks again, Tony Paul and Tim for advice, this engine will most likely be restored, however if I cannot find reasonably priced original pistons somewhere I do have to make my homework really careful.....

 Yanmar:LP Series -  Tachometer not working VIEW/REPLY Includes Attachments Notify me of any new messages to this topic. 6  Wed Nov 11 09 9:18 PM
Oct 13 2009
04:12 PM
Guest Trav   The tachs on my port engine quit working last time out. Upon cold restart they worked again for a while, then intermittently, then they quit. How do I test the sender? Where is it? Do they go ba.....
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 Yanmar:LP Series -  Raw Water Pump Relocate 315 6lp-ste VIEW/REPLY Includes Attachments Notify me of any new messages to this topic. 42  Sun Nov 8 09 7:09 PM
Oct 27 2009
01:54 AM
Level-1 Member Robert Munroe   Is it possible to relocate the raw water pump to the front of the engine? Rather than on the side? I can barely get to it in my install and it makes for maintanence issues. Also has anyone removed the.....
42 Responses.... Open/CloseView ALL

 Yanmar:LP Series -  Rod through Block VIEW/REPLY   Notify me of any new messages to this topic. 7  Sun Nov 8 09 6:19 PM
Oct 16 2009
04:34 PM
Level-1 Member Rico   2004, 6LPA-STP, 315 hp, 7669 eng. hrs, stbd main engine # 3 rod lower piece and collar found in bilge from 3" x 3" x 3" triangular fracture in block. Deep scores seen on crank bearing s.....
7 Responses.... Open/CloseView ALL

 Yanmar:LP Series -  One bad day of fishing has lead to this. 6LP-STE making bad noises. VIEW/REPLY Includes Attachments Notify me of any new messages to this topic. 12  Thu Nov 5 09 1:35 AM
Aug 17 2009
12:33 AM
Level-1 Member George Masters   I hope you guys can help me out on this one. Anyway here we go... A little history, this engine is a Yanmar 6LP-STE that has about 680 hours. This engine was manufacturered in 1999 and has had regu.....
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 Yanmar:LP Series -  Engine flushing issue with ear muffs on sterndrive VIEW/REPLY Includes Attachments Notify me of any new messages to this topic. 4  Wed Nov 4 09 11:20 PM
Nov 2 2009
12:04 AM
Level-1 Member Speedracer   Wondering if anyone has had this issue: I attempted to winterize the engine but I can get enough water to circulate through the engine when i hook up the garden hose with earmuffs to the sterdrive. M.....
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 Yanmar:LP Series -  How many cranks before engine starts? VIEW/REPLY   Notify me of any new messages to this topic. 4  Wed Nov 4 09 10:27 PM
Nov 3 2009
01:41 AM
Level-1 Member Speedracer   How many cranks would you say is normal before the engine starts? My single 6LPA-STP2 usually starts after the second crank. recently it is starting after the third crank. Does air temperature affect .....
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 Yanmar:LP Series -  Oil Change Fitting VIEW/REPLY   Notify me of any new messages to this topic. 1  Tue Nov 3 09 4:49 AM
Nov 3 2009
02:25 AM
Level-1 Member Pedro Fundora   I bough a Reverso oil change system for my Twin 6LPA315 motors. I need to make a hose to connect to the oil pan drain in order to have the system drain the oil at oil change time. Does anybody know of.....
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 Yanmar:LP Series -  Turbo Wash Yanmar 6lpa VIEW/REPLY   Notify me of any new messages to this topic. 0  Fri Oct 30 09 12:23 PM
Oct 30 2009
12:23 PM
Level-1 Member [DELETED BY AUTHOR]
NO Responses....

 Yanmar:LP Series -  6lp Ste Valve Probs And Reliablity VIEW/REPLY   Notify me of any new messages to this topic. 1  Thu Oct 29 09 1:55 PM
Oct 28 2009
10:00 PM
Guest Parasailsam   Looking at a pair of remans to repower my commercial parasail boat. Have heard some negative stuff about these motors and was hoping you guys could give me the straight truth on these things. Thanks
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