Stationary gear bearing set screws

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Old 12-19-09, 01:23 PM
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Stationary gear bearing set screws

Any know from experience if these screws could be left out?
Would the bearings move without them?
Attached Thumbnails Stationary gear bearing set screws-set-screw.jpg   Stationary gear bearing set screws-stationarygears.jpg  
Old 12-19-09, 01:43 PM
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I always use them in customer engines, and if the old ones get mangled I order new set screws from Ray at Malloy Mazda, 888 533 3400.

Presumably Mazda had a reason for going to the trouble of using them.
Old 12-19-09, 03:43 PM
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Originally Posted by GoodfellaFD3S
I always use them in customer engines, and if the old ones get mangled I order new set screws from Ray at Malloy Mazda, 888 533 3400.

Presumably Mazda had a reason for going to the trouble of using them.
Thanks, that's what someone else has told me as well so I am going to replace them.
Old 12-21-09, 09:17 AM
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Originally Posted by GoodfellaFD3S
I always use them in customer engines, and if the old ones get mangled I order new set screws from Ray at Malloy Mazda, 888 533 3400.
Would you happen to know if this is the correct part number?

992220612
Old 12-21-09, 10:16 AM
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Part # NF01-10-E09, it is technically called a stopper pin

It is not a good idea to leave them out.
Old 12-28-09, 04:00 AM
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i have heard of people using loctite on the bearing instead, and I once built a motor without one because I couldnt find it and it was a crap motor anyway, never had a problem with that engine. BUT I wouldn't recommend leaving them out, there is a lot of thermal expansion in these engines and you don't want that bearing to spin and ruin your motor all because of a stupid setscrew.
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