Perkins Counter Rotating
- Thread starter Hawgwash
- Start date
The friendliest place on the web for anyone who enjoys boating.
If you have answers, please help by responding to the unanswered posts.
If you have answers, please help by responding to the unanswered posts.
sdowney717
Guru
- Joined
- Jan 26, 2016
- Messages
- 2,264
- Location
- United States
- Vessel Name
- Old Glory
- Vessel Make
- 1970 Egg Harbor 37 extended salon model
Diesels in boats do not counter rotate, AFAIK, only gas engine do.
Ok.sdowney717; said:
So what am I missing when I read the following on "other" boat forums?
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
CPseudonym
Moderator Emeritus
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.
Yes, thanks Craig.
I also found this.
Attachments
DHeckrotte
Guru
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.
SteveandZoila
Senior Member
DHeckrotte; said:
Thanks, both of you.SteveandZoila; said:
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.
Last edited:
SteveandZoila
Senior Member
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.
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.
SteveandZoila
Senior Member
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.
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.
sdowney717
Guru
- Joined
- Jan 26, 2016
- Messages
- 2,264
- Location
- United States
- Vessel Name
- Old Glory
- Vessel Make
- 1970 Egg Harbor 37 extended salon model
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.
SteveandZoila
Senior Member
????
I don't get the post either, seems somebody didn't read the topic!
I don't get the post either, seems somebody didn't read the topic!
Tom.B
Moderator Emeritus
- Joined
- Jul 30, 2009
- Messages
- 5,839
- Location
- USA
- Vessel Name
- Skinny Dippin'
- Vessel Make
- Navigator 4200 Classic
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.
Thanks Tom.
River Cruiser
Guru
- Joined
- Jan 25, 2013
- Messages
- 1,357
- Location
- US
- Vessel Name
- Northern Lights II
- Vessel Make
- Bayliner 3870
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
Sent from my iPad using Trawler Forum
Ski in NC
Technical Guru
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.
SteveandZoila
Senior Member
Thanks, that was my plan "B" I will be starting it as soon as my hoses come in.
Deckape
Senior Member
Have twin Perkins 6.3544's both are standard rotation with the port transmission changing the rotation. Had it rebuilt in Feb and had to use my housing as they didn't have a replacement on shelf.
