THe NAC Lots-O-BFG KO2 Thread

[87manche]

Re: THe NAC Lots-O-Post Thread

They are goofy self tappers. I didn't bother either last time, and didn't on my MJ either time, I will find them tonight and hopefully remember to get specs for you before putting them in.

Completely non essential, I just might as well at this point.

WTF self tapping screws into the block?

I wonder what brilliant bean counter came up with that shit.
Hopefully I can just use regular bolts now that the holes have threads. I just didn't know if metric or SAE. Figured SAE, but who knows.
i'd like to put them back just because. That and I'm pretty sure that cover is rattling, and that ain't gonna hold water on this build.

 

[kastein]

Re: THe NAC Lots-O-Post Thread

WTF self tapping screws into the block?

I wonder what brilliant bean counter came up with that shit.
Hopefully I can just use regular bolts now that the holes have threads. I just didn't know if metric or SAE. Figured SAE, but who knows.
i'd like to put them back just because. That and I'm pretty sure that cover is rattling, and that ain't gonna hold water on this build.

nahhh, I'm talking about the 3 little bolts that hold the inspection cover thing to the bellhousing. There are no bolts from the inspection cover to the block, just the through bolts that hold the engine and tranny together.

And then there are the two honking huge bolts at the bottom that go through and have a nut on the other side, and all they do is hold the inspection cover on. I think I am going to make some braces that go from those to the engine block, maybe that will reduce the stress on the top half of the bellhousing. I can't figure out what would cause stresses that would break the bellhousing starting right at the bulge for the starter, they don't start at the starter motor bolts. Just right in the middle of a gently curved area of cast alloy. The only thing that would maybe cause this would be a severe suspension impact while cornering hard to the left or maybe jumping it a lot, really hard, but I've done neither of those.

edit: I guess slamming on the clutch really hard repeatedly could do it, but I don't do that. And if using the clutch breaks a freakin bellhousing, the bellhousing was a shitty weak design in the first place.

 

[Olympus Off Road]

Re: THe NAC Lots-O-Post Thread

And then there are the two honking huge bolts at the bottom that go through and have a nut on the other side, and all they do is hold the inspection cover on. I think I am going to make some braces that go from those to the engine block, maybe that will reduce the stress on the top half of the bellhousing. I can't figure out what would cause stresses that would break the bellhousing starting right at the bulge for the starter, they don't start at the starter motor bolts. Just right in the middle of a gently curved area of cast alloy. The only thing that would maybe cause this would be a severe suspension impact while cornering hard to the left or maybe jumping it a lot, really hard, but I've done neither of those.
.

My Comanche (4 cyl ax4) had braces like that. And a teenie little shock absorber by the front of the engine.

They are some big honkin' bolts just for an inspection cover on other models though.

I can't even use the inspection cover with my AA bell housing. It sits perfectly tight to the oil pan. Would have been nice if they made the holes in the bellhousig match up with the additional bell housing mount holes in the gen 3+ gm oil pans. They are about 3/8" off.

 

[vetteboy]

Re: THe NAC Lots-O-Post Thread

WTF self tapping screws into the block?

I wonder what brilliant bean counter came up with that shit.
Hopefully I can just use regular bolts now that the holes have threads. I just didn't know if metric or SAE. Figured SAE, but who knows.
i'd like to put them back just because. That and I'm pretty sure that cover is rattling, and that ain't gonna hold water on this build.

Generally...if it bolts directly into the block, it's always SAE. If it bolts into anything that's not the engine block itself, it's metric.

Which is why the starter has one of each that hold it on, at least in my experience.

 

[squashman702]

Re: THe NAC Lots-O-Post Thread

Generally...if it bolts directly into the block, it's always SAE. If it bolts into anything that's not the engine block itself, it's metric.

Which is why the starter has one of each that hold it on, at least in my experience.

My starter had one of each. Pulled it last weekend to do my clutch.

 

[chedisme]

Re: THe NAC Lots-O-Post Thread

Shut up dave

 

[kastein]

Re: THe NAC Lots-O-Post Thread

My Comanche (4 cyl ax4) had braces like that. And a teenie little shock absorber by the front of the engine.

They are some big honkin' bolts just for an inspection cover on other models though.

I can't even use the inspection cover with my AA bell housing. It sits perfectly tight to the oil pan. Would have been nice if they made the holes in the bellhousig match up with the additional bell housing mount holes in the gen 3+ gm oil pans. They are about 3/8" off.

Yep. smallblock mopars (3.9, 5.2, 5.9) with AX15/NV3550/NV4500s have them too.

The only reason those bolts are so stupid big (it's like that on the AW4 too) is because they didn't want to have custom bolts with giant flange heads or custom washers made to put a tiny bolt in a ginormous hole without caving in the inspection cover. Cheaper to just toss an M12 bolt or whatever those are in there.

Generally...if it bolts directly into the block, it's always SAE. If it bolts into anything that's not the engine block itself, it's metric.

Which is why the starter has one of each that hold it on, at least in my experience.

Yup. 3/8-16 into the bellhousing (lol aisin transmission with SAE on it) and metric into the starter.

Why? It's because the bellhousing pattern was originally the AMC V8 pattern. So the starter bolt hole in the bellhousing was specced SAE.

 

[squashman702]

Re: THe NAC Lots-O-Post Thread

Shut up dave

Shut up stiff arm

 

[asp]

Re: THe NAC Lots-O-Post Thread

Ken are you sure those are self tapping bolts? "self tapping" and "transmission" don't really go together. I just buttoned mine back up and didn't use anything matching that description for the bellhousing cover.

 

[squashman702]

Re: THe NAC Lots-O-Post Thread

Ken are you sure those are self tapping bolts? "self tapping" and "transmission" don't really go together. I just buttoned mine back up and didn't use anything matching that description for the bellhousing cover.

Mine looked like self tappers with a 13MM head.

 

[vetteboy]

Re: THe NAC Lots-O-Post Thread

Ken are you sure those are self tapping bolts? "self tapping" and "transmission" don't really go together. I just buttoned mine back up and didn't use anything matching that description for the bellhousing cover.

I definitely remember some coarse sheet metal screw kinda things in addition to the two large bolts.

 

[squashman702]

Re: THe NAC Lots-O-Post Thread

Just posted the Teraflex high steer system I have leftover from the 5.9 for $225 on Jeepforum and had two responses to it within a few minutes. Guess I priced it too low.

 

[asp]

Re: THe NAC Lots-O-Post Thread

How long were they? I used short stubby ones for mine. Granted they came from my bin o jeep hardware, but if they threaded in nicely I would be surprised if they were self tapping originally.

Edit: what generation bell housing are we talking? I thought they were all the same. Mine does not have that.

 

[squashman702]

Re: THe NAC Lots-O-Post Thread

How long were they? I used short stubby ones for mine. Granted they came from my bin o jeep hardware, but if they threaded in nicely I would be surprised if they were self tapping originally.

Maybe 1/2" of coarse thread?

This was on my 1994 ZJ, so it's an external slave AX-15. No idea if it's the original transmission or not, but I know they were all external slave in the 1994 ZJ's.

 

[vetteboy]

Re: THe NAC Lots-O-Post Thread

I definitely remember some coarse sheet metal screw kinda things in addition to the two large bolts.

Two on the top side and one on the very bottom IIRC.

 

[RCman]

Re: THe NAC Lots-O-Post Thread

Two on the top side and one on the very bottom IIRC.

Hanging by your feet? If not you can some strange junk.

 

[asp]

Re: THe NAC Lots-O-Post Thread

Hmm. Weird. I'm curious now. I'm going to pull the bottom one and look at the hole/bolt next time I'm under there.

 

[squashman702]

Re: THe NAC Lots-O-Post Thread

Hanging by your feet? If not you can some strange junk.

A dick joke in Rob format?

 

[vetteboy]

Re: THe NAC Lots-O-Post Thread

Hanging by your feet? If not you can some strange junk.

wut

 

[RCman]

Re: THe NAC Lots-O-Post Thread

A dick joke in Rob format?

You catch on quick!