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Old 10-12-2019, 12:30 PM   #1
GeneralBurrito
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Default What's the thread pitch of the cam cover bolts?

Got 2 stripped threads on my cam cover and I want to helicoil them. I'm assuming they're m6x1, but I just want to make sure. On a B230F
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Old 10-12-2019, 12:42 PM   #2
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Got 2 stripped threads on my cam cover and I want to helicoil them. I'm assuming they're m6x1, but I just want to make sure. On a B230F
Yes M6x1.
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Old 10-13-2019, 10:32 AM   #3
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Got 2 stripped threads on my cam cover and I want to helicoil them. I'm assuming they're m6x1, but I just want to make sure. On a B230F
Heli-coils make a disaster down the road. Use Time Serts. The insert is a solid piece rather then a spring that WILL come back out for an even bigger disaster.
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Old 10-14-2019, 07:25 PM   #4
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Retap for 1/4 inch threads. Maybe even 7mm threads if you prefer to use metric. Don't forget to drill the cam cover bolt holes to match.
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Old 10-15-2019, 03:26 PM   #5
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I was thinking about doing that, but then I'd still be screwing into aluminum.
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Old 10-15-2019, 03:36 PM   #6
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Heli-coils make a disaster down the road. Use Time Serts. The insert is a solid piece rather then a spring that WILL come back out for an even bigger disaster.
People need to learn how to use heli-coils correctly, or someone better tell the FAA because we put millions of dollars worth of flight hardware in the air with heli-coils in everything aluminum. Both inserts have pros/cons but the whole "heli-coils are terrible" thing is
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Old 10-15-2019, 03:37 PM   #7
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Heli-coils make a disaster down the road. Use Time Serts. The insert is a solid piece rather then a spring that WILL come back out for an even bigger disaster.
Timesert also makes a Big Sert to help repair those disasters. People just always want to use the cheap way instead of the best way to repair threads. Timesert for lyfe!
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Old 10-15-2019, 04:43 PM   #8
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Are you talking about the holes in the head for the cam cover studs, boogered threads on the studs, or the two holes on the side that aren't used for anything on the LH-Jet cars?

-J
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Old 10-15-2019, 06:11 PM   #9
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Originally Posted by Stiggy Pop View Post
People need to learn how to use heli-coils correctly, or someone better tell the FAA because we put millions of dollars worth of flight hardware in the air with heli-coils in everything aluminum. Both inserts have pros/cons but the whole "heli-coils are terrible" thing is
No doubt in large part due to the installer of thread inserts + how the end user treats them down the road. Over the years I have encountered enough of Elroy's abortive attempts at drilling holes sideways then getting it really wrong with the tap to install the thread insert cross-threaded in the hole for a wood screw to end up as the fastener holding an exhaust manifold ear in place.

Elroy really needs to stick to pumping gasoline or 'you want fries with that?'
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Old 10-15-2019, 10:21 PM   #10
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Originally Posted by John242Ti View Post
Are you talking about the holes in the head for the cam cover studs, boogered threads on the studs, or the two holes on the side that aren't used for anything on the LH-Jet cars?

-J
Holes in the head for the cam cover studs.
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Old 10-16-2019, 01:28 PM   #11
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I know you can use a properly installed helicoil. But I've had situations where there is going to be removal of the item. Like a spark plug. I've never had long lasting service from helicoils when it comes to removing the spark plug several times over the years of use. Whereas the timesert spark plug insert properly installed just works.
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