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Main bearing issues-crap!
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67 Sunroof
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PostPosted: Mon Jul 22, 2019 8:12 am    Post subject: Main bearing issues-crap! Reply with quote

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 donít fit. Too small.
They say a picture is worth a thousand words so Iíll just post my measurements in the picture.

Image may have been reduced in size. Click image to view fullscreen.

Image may have been reduced in size. Click image to view fullscreen.


The top measurements are obviously the main bearings I.D.
The bottom measurements are the crank O.D.

So Iím guessing my bearings are the wrong size? Iím confused.
Sorry for the newbie question again!
More pics:

Image may have been reduced in size. Click image to view fullscreen.

Image may have been reduced in size. Click image to view fullscreen.
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mcmscott
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PostPosted: Mon Jul 22, 2019 8:39 am    Post subject: Re: Main bearing issues-crap! Reply with quote

.020 crank/ .020 case. your crank is standard.
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67 Sunroof
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PostPosted: Mon Jul 22, 2019 9:41 am    Post subject: Re: Main bearing issues-crap! Reply with quote

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. Iím guessing my bearings ID are too small. Weird.
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TheViking
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PostPosted: Mon Jul 22, 2019 9:48 am    Post subject: Re: Main bearing issues-crap! Reply with quote

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. Iím 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
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PostPosted: Mon Jul 22, 2019 11:11 am    Post subject: Re: Main bearing issues-crap! Reply with quote

The entire bearing part number list is at the end of the blueprinting sheet

Looks like you need 111198471

Crank Case Thrust

111 198 471 STD .020 STD


https://www.thesamba.com/vw/archives/info/blueprinting_worksheet.php
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turboblue
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PostPosted: Mon Jul 22, 2019 12:35 pm    Post subject: Re: Main bearing issues-crap! Reply with quote

https://www.davis-motorsports.com/guide-vw-type-1-engine-bearings/
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mark tucker
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PostPosted: Mon Jul 22, 2019 1:45 pm    Post subject: Re: Main bearing issues-crap! Reply with quote

thats eazy, those are the rong bearings. Shocked
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fl59bug
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PostPosted: Mon Jul 22, 2019 2:01 pm    Post subject: Re: Main bearing issues-crap! Reply with quote

https://www2.cip1.com/ProductDetails.asp?ProductCode=C24%2D111%2D198%2D471%2DSL
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Glenn Premium Member
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PostPosted: Mon Jul 22, 2019 2:07 pm    Post subject: Re: Main bearing issues-crap! Reply with quote

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
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67 Sunroof
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PostPosted: Mon Jul 22, 2019 9:23 pm    Post subject: Re: Main bearing issues-crap! Reply with quote

Thanks for the link fl59bug. Thatís the ones I need.
Now that itís been explained (and I ruined the set I have) Iíll know for my next motor I build. Haha. (I had already notched the bearings)
Thank you for clarifying for me. Iím actually not afraid to ask stupid questions. I would rather ask now than not ask later and have problems....
Embarassed
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Howard 111
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PostPosted: Mon Jul 22, 2019 9:59 pm    Post subject: Re: Main bearing issues-crap! Reply with quote

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.
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67 Sunroof
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PostPosted: Mon Jul 22, 2019 10:32 pm    Post subject: Re: Main bearing issues-crap! Reply with quote

I didnít 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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