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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: srozell on February 27, 2015, 04:26:04 pm

Title: Helicoils and 14 bolt rear end hubs
Post by: srozell on February 27, 2015, 04:26:04 pm

They don't mix.

Boring out the flange-to-hub holes big enough to tap for a helicoil breaks through into the center of the hub.

If it was absolutely necessary, I suppose you could bore the top portion of the hole, enough for one length of helicoil, leaving the bottom of the bolt hole untouched, but you wouldn't have the full strength of the threads.

This is a lesson I learned too late. The hub is operational, but it will potentially leak lubricant through the bolt holes.

I don't like it so I'm looking for another 14 bolt rear-end. *sigh*

Title: Helicoils and 14 bolt rear end hubs
Post by: roundhouse on February 27, 2015, 09:41:41 pm

Quote from: srozell on February 27, 2015, 04:26:04 pm

They don't mix.

Boring out the flange-to-hub holes big enough to tap for a helicoil breaks through into the center of the hub.

If it was absolutely necessary, I suppose you could bore the top portion of the hole, enough for one length of helicoil, leaving the bottom of the bolt hole untouched, but you wouldn't have the full strength of the threads.

This is a lesson I learned too late. The hub is operational, but it will potentially leak lubricant through the bolt holes.

I don't like it so I'm looking for another 14 bolt rear-end. *sigh*

all you need is the hub

I'd try using a tube of the gasket from the Toyota dealer
It's the best in the world

Clean it up with brake cleaner
Use a lot of the gasket Maker
See if it leaks





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Title: Re: Helicoils and 14 bolt rear end hubs
Post by: Irish_Alley on February 27, 2015, 11:19:53 pm

we always use "the right stuff" on all rear end parts

Title: Re: Helicoils and 14 bolt rear end hubs
Post by: srozell on February 28, 2015, 10:14:29 pm

Well, despite what the local wrecker told me, I went to check out their inventory and found the hubs I needed in an 88 3/4 ton van. I pulled them in a few minutes, and they were in great condition, as were the bearings and seals. I could have taken the whole rear-end for $98 bucks, but I didn't have the time. They charged me $60 bucks for the pair of hubs and I'm a happy camper.

I found the same rear end in another truck there, so if things look bad when I get into the pumpkin I might go back and grab it.

Title: Re: Helicoils and 14 bolt rear end hubs
Post by: roundhouse on March 01, 2015, 07:21:47 pm

Ha ha


Yeah taking the whole axle is not easy
Weighs 570 lbs



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