Type 4 store single thrust cam bearing

[malcolm2]

I bought all my engine stuff in December. Just now assembling. It is Saturday I suppose I can call them Monday....

But the thrust bearing has a tang and the case saddle does not have a notch.

I could file the tang down.... Or I could file a notch in the saddle????

This happened to anyone before?

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My Toys: '75 Porsche 914, '92 Ski Nautique and now a 1972 VW Transporter Deluxe (punch list fixing)

[malcolm2]

Hold your horses..... Looking closer and comparing this shell to the others.... The tang is a bit different, not as pronounced. So I am now wondering if this, smaller protrusion, is designed to crush in when the case is bolted up.

Ya think?
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My Toys: '75 Porsche 914, '92 Ski Nautique and now a 1972 VW Transporter Deluxe (punch list fixing)

[SGKent]

Malcom - one side of the case has a tang, The other does not. On a single flange bearing, like I use, that one with the thrust only goes in the one side of the case with a notch. If you go to a double thrust flange, like some people do, you are getting two sets of single thrust flange bearings because that is what the factory used, so you have to file a notch in the other half of the case. Basically the vendor sells you two single case sets and tosses out the bearings that won't get used.
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“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin

[germansupplyscott]

What it looks like to me is you might have the 2nd thrust bearing from a double thrust set. The thrust bearing of a single thrust ('normal') set of cam bearings does not have the tang. The opposite bearing, the non-thrust bearing in the journal closest to the cam gear, has the tang.

To make a proper set of double thrust bearings you need a thrust bearing with a tang, that is used in place of the non-thrust bearing. There is a Porsche bearing that does this perfectly, and the bearing in the OP photo looks like that bearing.

So what I think you might have in the photo is a Porsche intermediate shaft bearing that could be used as the 2nd thrust bearing in a double thrust set.

ALSO: no, the tang is never designed to crush. It's designed to fit into a corresponding relief slot in the case journal, to prevent the bearing from rotating.
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SL

[raygreenwood]

[malcolm2]

I tried the thrust bearing in the right case half. Yes there is a relief notch there, but the tang and the notch don’t line up. 1/2 the tang misses the notch.

Scott, you maybe right. This set appears to have a miss packed bearing. I guess they added the 2nd thrust bearing for the right 1/2 vs the correct bearing for the left half (with no tang).
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My Toys: '75 Porsche 914, '92 Ski Nautique and now a 1972 VW Transporter Deluxe (punch list fixing)

[malcolm2]

[Wildthings]

I have found that the bearings in some of these double thrust bearing sets are not even the correct diameter to fit the bore in the case. Lots of bad stuff out there any more. If there is a vendor that dependably supplies the right bearings most of the time, I would sure like to know who it is.

[skills@eurocarsplus]

file the tang. that is SOP. always modify the cheapest part. going at your case with an ax wouldn't be a smart move. I've done this on every air-cooled I have built
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[malcolm2]

Another thought is to use the old cam as an anvil. Thats is: with the old cam on the bench, install the thrust bearing on the old cam. With the tang visible tap the tang with a hammer and brass punch.
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My Toys: '75 Porsche 914, '92 Ski Nautique and now a 1972 VW Transporter Deluxe (punch list fixing)

[skills@eurocarsplus]

you will deform the bearing. just file the tang


it's been done forever that way

https://www.thesamba.com/vw/forum/search.php?searc...h_forum=12
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[malcolm2]

DONE DEAL>>>>>

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My Toys: '75 Porsche 914, '92 Ski Nautique and now a 1972 VW Transporter Deluxe (punch list fixing)

[malcolm2]

I would say that they have NOT always been done that way. I was watching Jake's video.... good close up of his build.... NO TANG mid to late 80's.

This picture is of the bearing that came out and the new one.... NO TANG. 1975

In 2012 I build a 1911 cc TIV with bearings from the type4store..... NO TANG.

I hate it when parts suppliers either just expect everyone to know that their product needs to be modified, or they don't care to put instructions in the box. Thank goodness for all these forums with folks that have broken the seal on all these crappy supplier stories.

Anyway, this problem is solved. Thanks to all that chimed in. I especially like the comment, "modify the cheapest part" !!!

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My Toys: '75 Porsche 914, '92 Ski Nautique and now a 1972 VW Transporter Deluxe (punch list fixing)

[TomWesty]

[skills@eurocarsplus]

[orwell84]

I have a set of double thrust set of cam bearings from the Type 4 store that I wasn't going to use because no way am I going to whittle a notch in my case and end up hating my life when it all goes tits up, but filing down the bearing tang. That's doable...

[skills@eurocarsplus]

more cam bearing fun

https://www.thesamba.com/vw/forum/viewtopic.php?t=...mp;start=0
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[orwell84]

[SGKent]

I use single thrust for numerous reasons, that being one.
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“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin

[Bloog]