VD Front inner A-arm bolts

[Speed Sport Engineering]

Can someone tell me what is normally used for the bolts through the lower front A-arm rod ends that are inboard in front of the pedals on a VD? On my car it looks like they were 12-point head bolts, but I can't see them very well and they look rounded off. I want to get them out and replaced in the shop rather then risk a struggle at the track.

If they are a 12 point, are they metric?

Thanks,

Mike

[JHerscher]

That’s what I use.

MS21250-05012

[Bill Johnson 42]

Mike - mine are the same 12 point with a jet nut on the other end. They originally went from the bottom up but I did switch mine to go from the top down with the nut on the bottom. Kind of a pain to work with.

[Speed Sport Engineering]

Mike - mine are the same 12 point with a jet nut on the other end. They originally went from the bottom up but I did switch mine to go from the top down with the nut on the bottom. Kind of a pain to work with.

Thanks,

If they went from the bottom up, there must have been a hole in the belly pan? There's no hole in my belly pan. I didn't see a nut on the bottom. I assumed they were into a trapped mounting bracket right above the floor. I can't get my big head down there to see.

[Bill Johnson 42]

Yes, there are access holes in the belly pan on mine. Can't imagine there wouldn't be a welded insert in the bottom of your frame for the bolt to thread into unless of course someone put the floor pan on with the A arms already bolted in - of course we've all seen crazy stuff like that. Do you have access holes for the V shaped piece over the bottom front of the fuel cell?

Personally I find the access hole and jet nut a better solution, that bolt is a pain to work with and if whatever welded insert has damaged threads the repair job becomes an unreasonable task.

[JHerscher]

Front skid plate must be removed to access the holes in my chassis floor. I also have holes for the v shaped removable structure in front of the fuel cell.

I insert from the bottom because for me it is easier to align the spherical bearing hole and the mounting hole. The skid plate keeps the bolt from falling out. But I have never had one loosen. I use a new jet nut every time it is reassembled.

[Speed Sport Engineering]

Thanks for the replies. Having the part number of the bolt is good info.

There actually was access holes in the belly pan - I'm not sure why I didn't see them last time I looked.

I had to machine the OD of a socket to fit into the bore, but I was able to get them loose.

Thanks - I feel better now knowing I can get at them if needed to at the track.

[alangbaker]

Thanks for the replies. Having the part number of the bolt is good info.

There actually was access holes in the belly pan - I'm not sure why I didn't see them last time I looked.

I had to machine the OD of a socket to fit into the bore, but I was able to get them loose.

Thanks - I feel better now knowing I can get at them if needed to at the track.

I've got standard socket cap screws (allen bolts) in there right now, but the next time I have a chance, I'm using these:

MS20005-12 internally wrenching bolts

But I won't be buying them there at $5.50 a pop. I'll wait until they pop up on eBay.