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Post by owdlvr on Jul 24, 2023 9:20:00 GMT -8
How can I help? Are we talking main bearings or rod bearings?
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Post by autobus on Jul 24, 2023 9:29:54 GMT -8
Ya sorry i cant seem to post the bearing chart … so my case is 66.36 mm at the thrust bearing 21.06 mm for the thrust thickness My crankshaft is standard - just polished I have to order bearings and trying to find them has been confusing. Any help would be great ! Looking at the number’s would it be better to get a better case before i start due to thrust thickness being so close to max ?
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Post by owdlvr on Jul 24, 2023 10:18:32 GMT -8
Okay, you need to go back and measure your case bore again. 66.36mm is half way between a standard 2nd cut (66.0) and a third cut (66.5mm). You need to be more accurate in your measurement to confirm what you have. And it's difficult to understand because the standard measurement in North America is thousands of an inch, but with VW bearings you get the metric mix in there too. If we assume you have 2nd cut line bore the bearings you need are 111-198-481-OSSL www.cip1.ca/c24-111-198-481-ossl/If instead you have third cut line bore, the bearings you need are 111-198-491-60SL www.cip1.ca/c24-111-198-491-60sl/I'm assuming you're attempting to measure the case with a set of vernier calipers like in this link: dunebuggywarehouse.com/blogs/news/vw-type-1-main-bearing-sizing-chart-for-vw-beetle-dune-buggy-engines it's an incredibley inprecise way to measure, and doesn't actually check to see if your case bearing saddles are still round, which is a key factor. You actually need to use a bore gauge, and take multiple measurements to confirm each bearing saddle is still round. This video shows Davin measuring cylinder bores, but the theory is the same www.hagerty.com/media/videos/measuring-cylinder-bores-using-a-dial-bore-gauge-diy/ Without careful measuring, and considering you found your flywheel to be loose, I'd be wary of just slapping new bearings in and running it. If it was my engine, I'd probably have the case checked and/or cut for line bore and thrust as necessary...even though I might end up on third or fourth cut for line bore, and maximum for thrust. Then I would start looking for a new case to keep in storage for "next time", since I know this is the last time I'm using this particular case.
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Post by autobus on Jul 24, 2023 10:53:26 GMT -8
Thanks for your several suggestions i have almost no milage in the block , it was line bored , but will get a bore gauge and do more measurements thx
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Post by owdlvr on Jul 24, 2023 11:06:36 GMT -8
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Post by autobus on Jul 24, 2023 11:16:34 GMT -8
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Post by autobus on Jul 24, 2023 11:30:01 GMT -8
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Post by owdlvr on Jul 24, 2023 17:28:32 GMT -8
If you can get your hands on one of these, they can quickly tell you if the #4 saddle is round (in a pinch). No light, good to go. Make a decision from there. www.cip1.ca/c31-012-140-105g4/
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Post by autobus on Jul 24, 2023 19:37:13 GMT -8
Not worried about it being out of round as i said it has been line bored . The new bearing has a external diameter of 66.54 when carefully measured and shows no sign of a change or distortion. I am going to try to get to the meeting tomorrow night to ask more questions. The second set of bearing
C24-111-198-491-60SL i think sound good thx
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Post by autobus on Jul 24, 2023 19:44:03 GMT -8
The problem was you cant put a 6v flywheel on a 12 crank there is a small o ring on the 12 volt that keeps oil from your clutch , my clutch was covered The end of my 12 v crank was mushroomed from previous owner i never noticed it until it started to knock slowly getting worse . Now i have replaced the crank with a polished replacement, standard size and a 12 v flywheel with the o ring. I have to get a 12 v starter and a 200 mm clutch to complete the set up but it will be good . Thanks again
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Post by stude on Jul 24, 2023 20:13:05 GMT -8
I believe you can put a 6 volt flywheel on a 12 crank you have to use the paper gaskets but you cant put a 12 on a 6 volt because of the oil ring seat.
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Post by Volktales on Jul 24, 2023 21:38:34 GMT -8
Grindy McGrind time on the trans bellhousing. Always fun...
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Post by owdlvr on Jul 25, 2023 8:26:40 GMT -8
Just checked my collection of main bearing sets...no luck on the set you need. I do have the right set for your case, but only with a .010 under crank.
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Post by autobus on Jul 25, 2023 13:01:46 GMT -8
I have ordered the bearings set from CIP 1 And contacted Frazier at Thompsons he can turn down the thrust from 2mm to 1 but i will take half the case in so he can take off the smallest amount to match my case . Then it game on … put it back together thanks for the help everybody I always like advise and helpful suggestions…… ha
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Post by stude on Jul 25, 2023 13:44:21 GMT -8
I have ordered the bearings set from CIP 1 And contacted Frazier at Thompsons he can turn down the thrust from 2mm to 1 but i will take half the case in so he can take off the smallest amount to match my case . Then it game on … put it back together thanks for the help everybody I always like advise and helpful suggestions…… ha Can you explain to me this thrust bearing turning down thing I thought I saw it earlier but reread and not getting it.
Thanks T
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