Over tightened Cap Screw!
- Thread starter Piedmont
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kennyd
Advertiser
They are the same but different. Either will work for you. Just try to find a "kit" that includes the drill bit as it will be an odd size needed because of the metric thread. Again I think you should do both at the same time while it is apart.
Once try the thread repair insert's, you will be amazed how easy they are to use.
sal64
Platinum Member
i would just tap it next size bigger mite have to drill a little out .
SPYDERLK
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That is what Id do. A helicoil or Timesert/Casecert [stronger] will require drilling out too much parent metal. If you instead use a 3/8x16 american bolt it will work out perfectly. You would 1st drill the cover hole to 3/8 and bolt it back in stable position with the good bolt. At this point the through 3/8 hole should line up perfectly with the stripped hole [that, if stripped by an 8mm is perfectly sized for running a 3/8 tap into. The cover will guide you in straight. Since you dont have experience, use a good High Speed steel tap. These cost double, but are much stonger than the carbon steel variety so they wont break with out a major oops. Just be sure the guide/cover hole is concentric with the hole to be tapped, otherwise the tap will catch cyclicly in the guide hole as it turns.
If you were to go up one metric size it would be a bigger size increase than jumping over to the american coarse thread I named.
larry
Spudland_Dave
Veteran Member
I disagree....Especially given the location...more then enough parent material..
While it will fix the problem for now, the repair is no different then the original setup...what you gonna do when the 3/8" bolt hole is stripped?
With a Helicoil repair, you end up with a STRONGER then factory repair. And you dont need to worry down the road when changing the oil & filter...Plus you keep it "factory".... Because this is an "often removed" piece a helicoil repair is that much better (Steel on Steel threads instead of Steel in Aluminum)
As an added bonus, you wont need 2 different sockets, wrenches, etc.. when changing the filter..plus what happens if you accidently wind the 3/8" bolt into the untouched/original hole? Looks like your doing another repair...
Without a doubt I'd "Helicoil" it....If I were in your shoes, I'd probably use a Recoil brand Keysert....
Keyserts are pretty much PERFECT for use in aluminum...and I like Keyserts because the external threads are "standard" in other words, no special drills or taps required.
Pretty Sure the PN# you need is 75081 - Internal thread is M8-1.25, External threaded M12-1.25, Length 12mm...
I'd use a 27/64 Drill bit to drill then tap it..
Double check my work...I dont want to be responsible for wrong numbers/etc...
I disagree....Especially given the location...more then enough parent material..
While it will fix the problem for now, the repair is no different then the original setup...what you gonna do when the 3/8" bolt hole is stripped?
With a Helicoil repair, you end up with a STRONGER then factory repair. And you dont need to worry down the road when changing the oil & filter...Plus you keep it "factory".... Because this is an "often removed" piece a helicoil repair is that much better (Steel on Steel threads instead of Steel in Aluminum)
As an added bonus, you wont need 2 different sockets, wrenches, etc.. when changing the filter..plus what happens if you accidently wind the 3/8" bolt into the untouched/original hole? Looks like your doing another repair...
Without a doubt I'd "Helicoil" it....If I were in your shoes, I'd probably use a Recoil brand Keysert....
Keyserts are pretty much PERFECT for use in aluminum...and I like Keyserts because the external threads are "standard" in other words, no special drills or taps required.
Pretty Sure the PN# you need is 75081 - Internal thread is M8-1.25, External threaded M12-1.25, Length 12mm...
I'd use a 27/64 Drill bit to drill then tap it..
Double check my work...I dont want to be responsible for wrong numbers/etc...
Thanks Dave, I plan on going the Helicoil route, I looked into Keyserts but they are a harder to find. I appreciate your feed back.
SPYDERLK
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1]The 3/8 bolt cant get to the smaller thread and even if it did it wouldnt start to thread in.I disagree....Especially given the location...more then enough parent material..
While it will fix the problem for now, the repair is no different then the original setup...what you gonna do when the 3/8" bolt hole is stripped?
With a Helicoil repair, you end up with a STRONGER then factory repair. And you dont need to worry down the road when changing the oil & filter...Plus you keep it "factory".... Because this is an "often removed" piece a helicoil repair is that much better (Steel on Steel threads instead of Steel in Aluminum)
As an added bonus, you wont need 2 different sockets, wrenches, etc.. when changing the filter..plus what happens if you accidently wind the 3/8" bolt into the untouched/original hole? Looks like your doing another repair...
Without a doubt I'd "Helicoil" it....If I were in your shoes, I'd probably use a Recoil brand Keysert....
Keyserts are pretty much PERFECT for use in aluminum...and I like Keyserts because the external threads are "standard" in other words, no special drills or taps required.
Pretty Sure the PN# you need is 75081 - Internal thread is M8-1.25, External threaded M12-1.25, Length 12mm...
I'd use a 27/64 Drill bit to drill then tap it..
Double check my work...I dont want to be responsible for wrong numbers/etc...
2]The 3/8 bolt setup will be very strong because it will engage a lot more metal than the smaller original that was designed for the job but was stripped from overtightening.
3]The 3/8 Al thread wont strip if the op has learned his lesson. If he does strip it the resulting stripped hole would be 0.370" -- still requiring drillout to get up to the 0.422" holesize needed for the keysert.
larry
kennyd
Advertiser
That is GREAT news! Did you do both holes?
