 Rear axle roll pins replaced with bolts? |
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| 90quattrocoupe |
 Sep 22 2019, 12:02 PM
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Member  Group: Members Posts: 208 Joined: 4-November 16 From: Long Beach, CA. Member No.: 20,561 Region Association: Southern California  |
Is it possible to tap the holes for the roll pins and replace with bolts? Would this allow the use of 6 bolt cv joints? Possible to time sert the stub axle and sleeve the cv joint?
Greg W. |
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| stownsen914 |
Sep 22 2019, 08:59 PM
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Senior Member Group: Members Posts: 913 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
I modified some early 911 flanges to replace the roll pins with bolts to cure a persistent grease leakage issue between the CV and the flange. This is on a 300+ hp car. Apparently the flanges were flexing and allowing grease to seep through. With 6 bolts the leakage stopped. To do the mod, I had a machine shop tap the roll pin holes and install timeserts.
With that said, on my 914 racecar that has ~260 hp, I use stock 914 CVs with the roll pins, and haven't had a problem. Scott |
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| bdstone914 |
Sep 23 2019, 07:03 AM
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bdstone914 Group: Members Posts: 4,531 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(90quattrocoupe @ Sep 22 2019, 11:02 AM)  Is it possible to tap the holes for the roll pins and replace with bolts? Would this allow the use of 6 bolt cv joints? Possible to time sert the stub axle and sleeve the cv joint? Greg W. What to you expect to gain? The roll pin holes are 10 mm and the bolts are 8mm so you cant tap a larger hole to a smaller size. You can drill out two of the holes in the 6 bolt cv and use a roll pin. |
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