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05-30-2016, 05:29 PM
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#1
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Guru
City: Sidney
Join Date: Feb 2015
Posts: 2,258
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Perkins Counter Rotating
Is the starboard counter rotation a typical installation of Perkins T6.354?
Does that mean things like starters and alternators are not interchangeable, port to starboard?
What else?
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05-30-2016, 06:23 PM
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#2
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Guru
City: Seaford Va on Poquoson River, VA
Vessel Name: Old Glory
Vessel Model: 1970 Egg Harbor 37 extended salon model
Join Date: Jan 2016
Posts: 2,264
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Diesels in boats do not counter rotate, AFAIK, only gas engine do.
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05-30-2016, 07:38 PM
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#3
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Guru
City: Sidney
Join Date: Feb 2015
Posts: 2,258
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Quote:
Originally Posted by sdowney717;
Diesels in boats do not counter rotate, AFAIK, only gas engine do.
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Ok.
So what am I missing when I read the following on "other" boat forums?
Quote:
On the boat that I had with a pair of 6354s for one of the engines it ran in opposite rotation instead of the gearbox doing so and thus getting parts for it (starter motors etc) was expensive as not common, otherwise good engines.
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Quote:
There are a few parts that are next to imposable to get Like the oil pump for the reverse turning engine . They are dated but otherwise a good engine.
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And why would there be a discussion on boatdiesel about it?
http://boatdiesel.com/Forums/index.cfm?CFAPP=1&Forum_ID=68&ForumSearch=engine-rotation
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05-30-2016, 08:06 PM
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#4
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Guru
City: Hotel, CA
Join Date: Sep 2011
Posts: 8,323
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Aside from assisting a local forum member getting his starter to a shop for rebuilding I have nothing practical to offer aside from the fact that some of that series is counterrotating.
__________________
Craig
It's easier to fool people than to convince them that they've been fooled - Mark Twain
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05-30-2016, 08:14 PM
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#5
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Guru
City: Sidney
Join Date: Feb 2015
Posts: 2,258
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Quote:
Originally Posted by CPseudonym
Aside from assisting a local forum member getting his starter to a shop for rebuilding I have nothing practical to offer aside from the fact that some of that series is counterrotating.
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Yes, thanks Craig.
I also found this.
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05-30-2016, 09:20 PM
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#6
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Guru
City: Philadelphia, PA
Vessel Name: Revel
Vessel Model: 1984 Fu Hwa 39
Join Date: Nov 2015
Posts: 1,024
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Hawg, we've got the counter-rotating 6.354s in our '84 Fu Hwa. I've just bought the manuals off of eBay. Happily. after 8 days of possession, and about 1000 hrs on the engines, I have not had to deal with finding old, oddball parts affected by the rotation.
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05-30-2016, 09:21 PM
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#7
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Senior Member
City: Brentwood
Vessel Name: Miss Rita
Vessel Model: 2004 Heritage East
Join Date: Jan 2014
Posts: 150
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rebuilding 6.354 counter rotating
I am building a 1978 Perkins Starboard engine "x" counter rotating engine, 99% done. The starter is counter rotation. the fresh water pump is reverse, but I am stuck on the oil pump, I don't know how to hook it up see pic
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05-30-2016, 09:38 PM
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#8
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Guru
City: Sidney
Join Date: Feb 2015
Posts: 2,258
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Quote:
Originally Posted by DHeckrotte;
Hawg, we've got the counter-rotating 6.354s. I have not had to deal with finding old, oddball parts affected by the rotation.
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Quote:
Originally Posted by SteveandZoila;
I am building a 1978 Perkins Starboard engine "x" counter rotating engine, 99% done. The starter is counter rotation. the fresh water pump is reverse, but I am stuck on the oil pump, I don't know how to hook it up see pic
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Thanks, both of you.
Parts sure won't be any more plentiful down the road and carrying 2 of everything is not a place I want to be.
Good luck with the oil pump Steve.
BTW do you have a part number for that backwards oil pump. Lots of Perkins still around here, maybe I can find one in a barrel some place.
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05-31-2016, 03:49 PM
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#9
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Senior Member
City: Brentwood
Vessel Name: Miss Rita
Vessel Model: 2004 Heritage East
Join Date: Jan 2014
Posts: 150
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counter rotation oil pump
My perkins right hand rotating engine book gives the #41314067 , the same as the left hand engine book, 41314067. So I guess it just goes backwards? Still would like to see somebody's twin set up for the hose set u p.
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06-01-2016, 10:22 AM
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#10
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Senior Member
City: Brentwood
Vessel Name: Miss Rita
Vessel Model: 2004 Heritage East
Join Date: Jan 2014
Posts: 150
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Counter rotation
I forgot, I have been told by an alternators tech, alternators can work turning either direction, But look for ones with straight fans, not directional fans.
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06-01-2016, 11:50 AM
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#11
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Guru
City: Seaford Va on Poquoson River, VA
Vessel Name: Old Glory
Vessel Model: 1970 Egg Harbor 37 extended salon model
Join Date: Jan 2016
Posts: 2,264
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Quote:
Originally Posted by Hawgwash
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Looking for a fight? sounds like it with that stuff it up the nose attitude your showing. I bet more than 95% of diesel boat engines all turn standard rotations.
AFAIK, just is not good enough for you is it.
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06-01-2016, 12:16 PM
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#12
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Guru
City: Sidney
Join Date: Feb 2015
Posts: 2,258
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06-01-2016, 12:36 PM
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#13
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Senior Member
City: Brentwood
Vessel Name: Miss Rita
Vessel Model: 2004 Heritage East
Join Date: Jan 2014
Posts: 150
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????
I don't get the post either, seems somebody didn't read the topic!
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06-01-2016, 12:47 PM
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#14
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Guru
City: Sidney
Join Date: Feb 2015
Posts: 2,258
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It's ok, Steve, and thanks for your input.
Though the boat in question has other issues as well, it was worth asking the question.
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06-01-2016, 01:11 PM
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#15
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Guru
City: Cary, NC
Vessel Name: Skinny Dippin'
Vessel Model: Navigator 4200 Classic
Join Date: Jul 2009
Posts: 5,841
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I had a bazzackwards in our previous single screw boat. Most parts are interchangeable except the fresh water pump. Nobody re-popping those, so you have to reverse a rebuild kit. I think there is some info on that at boatdiesel.com. IIRC.
__________________
2000 Navigator 4200 Classic
(NOT a trawler)
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06-01-2016, 01:21 PM
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#16
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Guru
City: Sidney
Join Date: Feb 2015
Posts: 2,258
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Quote:
Originally Posted by Tom.B
I had a bazzackwards in our previous single screw boat. Most parts are interchangeable except the fresh water pump. Nobody re-popping those, so you have to reverse a rebuild kit. I think there is some info on that at boatdiesel.com. IIRC.
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Thanks Tom.
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06-01-2016, 01:32 PM
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#17
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Guru
City: Cary, NC
Vessel Name: Skinny Dippin'
Vessel Model: Navigator 4200 Classic
Join Date: Jul 2009
Posts: 5,841
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I only remember SOMETHING was weird about it. Maybe the housing was backward, but the impeller was regular. You will have to dig around for that. Sorry.
__________________
2000 Navigator 4200 Classic
(NOT a trawler)
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06-01-2016, 01:45 PM
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#18
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Guru
City: Sidney
Join Date: Feb 2015
Posts: 2,258
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Quote:
Originally Posted by Tom.B
I only remember SOMETHING was weird about it. Maybe the housing was backward, but the impeller was regular. You will have to dig around for that. Sorry.
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06-02-2016, 10:49 PM
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#19
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Guru
City: UMR MM283
Vessel Name: Northern Lights II
Vessel Model: Bayliner 3870
Join Date: Jan 2013
Posts: 1,357
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Another small difference would be the ring gear on the flywheel, the angle cut on the teeth so the pinion can engage easily is cut on the opposite side of the teeth.
Sent from my iPad using Trawler Forum
__________________
Ron on Northern Lights II
I don't like making plans for the day because the word "premeditated" gets thrown around in the courtroom.
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06-02-2016, 11:34 PM
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#20
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Technical Guru
City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
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Quote:
Originally Posted by SteveandZoila
I am building a 1978 Perkins Starboard engine "x" counter rotating engine, 99% done. The starter is counter rotation. the fresh water pump is reverse, but I am stuck on the oil pump, I don't know how to hook it up see pic
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Take the oil lines loose from the block adapter and bump starter. Which ever spits is your supply hose from the pump. In general you want flow to go.. pump..cooler..filter..engine.
Hawg, as you have gathered: Yes, some 354 twins have a backwards engine. But pretty rare. lots more out there that spin the same and get counter rotation at the gear.
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