Bigdogtrucker Posted September 16, 2015 Share Posted September 16, 2015 My 673(non turbo 170HP)has always run great, but has had low oil pressure and a vibration. After the oil change(Lucas/30W)the pressure is a little better and the vibration is much less. Would like to do rods/mains. The few places I've checked list all bearings being the same for 672-711, and some have certain older years listed alone. Would these Clevites be good to go? http://www.agkits.com/mackend672673675676707711mainbearingset.aspx#.VfmbGvlViko http://www.agkits.com/macke66736756766777077112valveconnectingrodbearingsoe.aspx#.VfmbQvlViko Quote Link to comment Share on other sites More sharing options...
Vladislav Posted September 16, 2015 Share Posted September 16, 2015 I'd suppose they are the same for 673 turbo, 237, EM6-300 and E6-350.I mean the offered ones.Am I wrong?As for the brand you asked Mahle is a top quality product for European car market.Many Mercedes engines had pistons and rings made by Mahle. 1 Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment Share on other sites More sharing options...
BOB DINGSDALE Posted September 16, 2015 Share Posted September 16, 2015 two sizes of mains for n/a 170 hp bearings.differant is width 1 Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted September 16, 2015 Share Posted September 16, 2015 What Bob said. Quote glenn akers Link to comment Share on other sites More sharing options...
c-davis-432 Posted September 16, 2015 Share Posted September 16, 2015 Be sure and check the crankshaft as one was chamfered and one was not. Wrong bearing will lock it down. Been there 1 Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 16, 2015 Author Share Posted September 16, 2015 Are both styles available? Any way to tell what my 1960 takes without pulling it apart? Quote Link to comment Share on other sites More sharing options...
kscarbel2 Posted September 17, 2015 Share Posted September 17, 2015 What's the width of your rod bearings, 1.600" or 1.913" ?And are your main bearings 1-1/8" or 1-1/4" wide ? Quote Link to comment Share on other sites More sharing options...
Superdog Posted September 17, 2015 Share Posted September 17, 2015 also need to check and make sure they are standard or if the crank has been turned and needs oversize ,been there too 2 Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 also need to check and make sure they are standard or if the crank has been turned and needs oversize ,been there tooPretty sure it has not been turned. I'll be calling my friend who did the engine over years ago, hope he knows. It runs SO good otherwise... 1 Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 What's the width of your rod bearings, 1.600" or 1.913" ?And are your main bearings 1-1/8" or 1-1/4" wide ?I was told the rod bearings changed in "85, I assume they went bigger then. Quote Link to comment Share on other sites More sharing options...
kscarbel2 Posted September 17, 2015 Share Posted September 17, 2015 I was told the rod bearings changed in "85, I assume they went bigger then.One can't assume here. What are the bearing widths? Are they standard or (how much) oversize ?The collective experience of the BMT members is second to none, and at your service. However, certain information must be confirmed. 2 Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 One can't assume here. What are the bearing widths? Are they standard or (how much) oversize ?The collective experience of the BMT members is second to none, and at your service. However, certain information must be confirmed.Engine is not apart. Quote Link to comment Share on other sites More sharing options...
Popular Post 41chevy Posted September 17, 2015 Popular Post Share Posted September 17, 2015 when the time comes it;s apart pop a rod cap off, you'll find a bearing code on the back. std., + 010, + 020 , -010 etc same on the mains. 3 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 One can't assume here. What are the bearing widths? Are they standard or (how much) oversize ?The collective experience of the BMT members is second to none, and at your service. However, certain information must be confirmed.If they changed to a wider bearing in the mid "80's, there's no way my 1960 would have the newer version. Engine has never been out of the truck and rebuilt once. Quote Link to comment Share on other sites More sharing options...
220cummins Posted September 17, 2015 Share Posted September 17, 2015 The only way to confirm is to drop the pan and pull a couple caps on the main and rods. Like 41 said the bearing should have stamped on back side. It's so hard to know what exactly was done over the years. 2 Quote Link to comment Share on other sites More sharing options...
kscarbel2 Posted September 17, 2015 Share Posted September 17, 2015 If they changed to a wider bearing in the mid "80's, there's no way my 1960 would have the newer version. Engine has never been out of the truck and rebuilt once.You're asking for help before you're ready to ask (putting the cart before the horse).You say your engine is a 1960 vintage. Non-turbo 673s prior to 1962 had the narrower bearings. But with so many years having passed regarding your truck and engine, I want to confirm what you actually have.....width and size (I assume you didn't own the truck since new). This is why I asked you the width of your rod and main bearings. Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 You're asking for help before you're ready to ask (putting the cart before the horse).You say your engine is a 1960 vintage. Non-turbo 673s prior to 1962 had the narrower bearings. But with so many years having passed regarding your truck and engine, I want to confirm what you actually have (I assume you didn't own the truck since new). This is why I asked you the width of your rod and main bearings.I'm the third owner, friend of mine bought it from the original owner in the "70's and owned it over 30 years. Like I said earlier the engine has never been out and was rebuilt once. It ''should" have the narrow bearings in that case. Are those available? 1 Quote Link to comment Share on other sites More sharing options...
kscarbel2 Posted September 17, 2015 Share Posted September 17, 2015 I'm the third owner, friend of mine bought it from the original owner in the "70's and owned it over 30 years. Like I said earlier the engine has never been out and was rebuilt once. It ''should" have the narrow bearings in that case. Are those available?Based on that, you should have the 1.913" width rod bearings (Mack No. 62GB2383 - individual bearings).You need to confirm the width of the main bearings.1-1/8" wide (complete set - 215SB36)1-1/4" wide (complete set - 215SB72)These part numbers also have "P" suffixes which reflect size (standard, .010, .020), but until you drop your pan, we don't know what you have.So drop your pan, measure the bearings, and note what size they are (stamped on the back of the bearing).Then call the good folks at Watts Mack and check availability. 2 Quote Link to comment Share on other sites More sharing options...
seyser Posted September 17, 2015 Share Posted September 17, 2015 Don't want to hijack your thread but quick question... Can main bearings be done without removing crankshaft?-Jeremy 1 Quote Link to comment Share on other sites More sharing options...
rick harper Posted September 17, 2015 Share Posted September 17, 2015 I have an END673, 170HP. I used 62GB2383 for the rod bearings and 215SB36CP1 for the main bearings. Mack PDC has the rods but not the mains. Quote Link to comment Share on other sites More sharing options...
MACKS Posted September 17, 2015 Share Posted September 17, 2015 How low is the oil pressure and when do you get the vibration could it be a bad damper? 1 Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 How low is the oil pressure and when do you get the vibration could it be a bad damper?15/17 hot @ idle. I changed the oil with 30W and a gallon of Lucas. Let her run at a high idle for a bit and the vibration(really feel it in the steering wheel/cab)just about went away. After it got hot from a little driving the vibration is there but not as bad as with the old oil. I was told by an old time Mack mechanic the worn mains cause that. 1 Quote Link to comment Share on other sites More sharing options...
seyser Posted September 17, 2015 Share Posted September 17, 2015 How many miles are on this engine? 1 Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 17, 2015 Author Share Posted September 17, 2015 How many miles are on this engine?It was rebuilt 20? years ago and used to move equipment around, mainly a D6D. Didn't haul everyday, just to and from job sites and moves for other people here and there. I don't have an exact figure on the miles but not a real high amount. 1 Quote Link to comment Share on other sites More sharing options...
seyser Posted September 17, 2015 Share Posted September 17, 2015 Do you think the truck was abused at some point or what do you think contributed to the accelerated wear of the lower end?I asked in another thread how long a thermodyne should last and got the impression that they should last nearly forever if taken care of properly. Obviously they will wear out eventually but your engine seems pretty young yet.I would be curious to know what was all done on the last overhaul and what brand components were used?-Jeremy Quote Link to comment Share on other sites More sharing options...
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