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67 Sunroof Samba Member
Joined: February 22, 2014 Posts: 1836 Location: Salisbury, MD
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Posted: Mon Jul 22, 2019 8:12 am Post subject: Main bearing issues-crap! |
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Ok so I was able to get my camshaft in and set the cam and thrust. I measured the thrust and there is a good clearance and the cam spins freely! Yeahhh!
The main bearings fit in the case great without any wobbles.
The crank is a cb 69mm. I went to put the bearings on the crank and they don’t fit. Too small.
They say a picture is worth a thousand words so I’ll just post my measurements in the picture.
The top measurements are obviously the main bearings I.D.
The bottom measurements are the crank O.D.
So I’m guessing my bearings are the wrong size? I’m confused.
Sorry for the newbie question again!
More pics:
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mcmscott Samba Member
Joined: March 12, 2010 Posts: 4848 Location: sanger ca
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Posted: Mon Jul 22, 2019 8:39 am Post subject: Re: Main bearing issues-crap! |
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.020 crank/ .020 case. your crank is standard. _________________ There are no stupid questions, only stupid people,
68 Ghia
67 T-1
65 Notch
02 Mexican beetle
74 Thing
15 Long travel rail
07 Nomad
05 f-250 |
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67 Sunroof Samba Member
Joined: February 22, 2014 Posts: 1836 Location: Salisbury, MD
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Posted: Mon Jul 22, 2019 9:41 am Post subject: Re: Main bearing issues-crap! |
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Could you clarify? I know the case was align bored .020 and I ordered bearings without any thrust and .020 size.
The bearing are too small for the crank or the crank is too big for the bearings. I’m guessing my bearings ID are too small. Weird. |
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TheViking Samba Member
Joined: March 04, 2016 Posts: 278 Location: Norway
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Posted: Mon Jul 22, 2019 9:48 am Post subject: Re: Main bearing issues-crap! |
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67 Sunroof wrote: |
Could you clarify? I know the case was align bored .020 and I ordered bearings without any thrust and .020 size.
The bearing are too small for the crank or the crank is too big for the bearings. I’m guessing my bearings ID are too small. Weird. |
He says that you have bearings that is made for cranks that is gorunded down .020 |
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AlteWagen Troll
Joined: February 23, 2007 Posts: 8498 Location: PNW
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turboblue Samba Member
Joined: October 09, 2003 Posts: 4216 Location: Central Indiana
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mark tucker Samba Member
Joined: April 08, 2009 Posts: 23937 Location: SHALIMAR ,FLORIDA
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Posted: Mon Jul 22, 2019 1:45 pm Post subject: Re: Main bearing issues-crap! |
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thats eazy, those are the rong bearings. |
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fl59bug Samba Member
Joined: November 23, 2005 Posts: 1976 Location: North Carolina
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Glenn Mr. 010
Joined: December 25, 2001 Posts: 76760 Location: Sneaking up behind you
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Posted: Mon Jul 22, 2019 2:07 pm Post subject: Re: Main bearing issues-crap! |
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Bearings have 3 measurements.
Case / Crank / Thrust
Your case is .020", the crank is STD and the thrust is STD.
You got .020"/.020"/STD _________________ Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare |
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67 Sunroof Samba Member
Joined: February 22, 2014 Posts: 1836 Location: Salisbury, MD
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Posted: Mon Jul 22, 2019 9:23 pm Post subject: Re: Main bearing issues-crap! |
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Thanks for the link fl59bug. That’s the ones I need.
Now that it’s been explained (and I ruined the set I have) I’ll know for my next motor I build. Haha. (I had already notched the bearings)
Thank you for clarifying for me. I’m actually not afraid to ask stupid questions. I would rather ask now than not ask later and have problems....
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Howard 111 Samba Member
Joined: July 09, 2005 Posts: 1827 Location: Virginia
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Posted: Mon Jul 22, 2019 9:59 pm Post subject: Re: Main bearing issues-crap! |
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We ALL had to learn the fine points of building an engine. Now you know what you need to proceed. Good luck with it, and ask before you modify a part that still doesn't fit. _________________ 1973 Karmann Ghia
Turbocharged, Fuel Injected
http://www.thesamba.com/vw/forum/viewtopic.php?t=531270 |
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67 Sunroof Samba Member
Joined: February 22, 2014 Posts: 1836 Location: Salisbury, MD
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Posted: Mon Jul 22, 2019 10:32 pm Post subject: Re: Main bearing issues-crap! |
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I didn’t modify a part to MAKE it fit.
I tried the bearings in the journals and they fit great. Then decided to notch the bearings.....THEN tried to slip the bearings onto the crank and uh! oh!
Lesson learned. Should have test fitted them BEFORE notching them. |
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