Using threaded rod for manifold removal "tool"

[rothfm]

Going to be working on a family members twin 7.4 454's in a SeaRay Amberjack 34. Doing Mani's, risers among other work. I've read that using a pair of threaded rods as "slides" when removing the manifold is helpful to not drop them etc...I'd like to do this.

Does anyone know the size and thread pitch, and a good length to use....Any other tips?


Thanks

 

[Bt Doctur]

3/8 x 16 NC I use old riser bolts 9-12 inches long. those use a 1 short ,1 long bolt setup. VS bolts of the same length.
When installing the manifolds pay attention as to the direction of the gasket. It will fit and match all the holes backwards and cause a leak of exaust gas. Install the studs, install the gaskets, install the manifolds.
If for some reason the room to work is nil and none, install the studs, install the manifolds, determine the correct way to install the gasket and notch the end holes to slip over the studs, drop gasket into place , install bolts, remove 2 studs and install bolt and tighten.

 

[GA_Boater]

The only tip I have is pull out one of the bolts and go to the AllThread store and size the all thread to the length of the bolt + a couple of inches. And slot the end of the all thread so you can use a screwdriver to remove the rod.

Alternative is to buy a couple of bolts with the right thread + a couple inches, cut the head off and slot the end. I think modified bolts may be best because the shank is mostly smooth and no "filing" action when sliding the manifold off and on.

 

[Scott Danforth]

both the small block and big block use 3/8-16 threads like BT Doctur listed. I have a variety of grade 8 bolts with the heads cut off and flats ground on them to use for such a task. I prefer sliding things like manifolds, etc on the unthreaded shank of a cut-off bolt vs fighting with threads

 

[alldodge]

Just did mine using threaded rod.