Rod Caps

[rookieupgrade1]

I just picked up some 1G big rods.......but no caps came with them.

My question is ....since I have to machine the rod thinner (the crank end) to match 2G (or 7 bolt) spec's can I substitue the 7 bolt rod caps?

Or am I just screwed?

 

[Defiant]

How the hell did they do that to you?

I doubt it, but ask your machinist. Most likely -if they fit- it'll cost more to do than a new set of rods.

 

[98TsiAWD]

Originally posted by rookieupgrade1
I just picked up some 1G big rods.......but no caps came with them.

My question is ....since I have to machine the rod thinner (the crank end) to match 2G (or 7 bolt) spec's can I substitue the 7 bolt rod caps?

Or am I just screwed?

2g rods are smaller diameter on the crank end. 1g rods are larger in diamater on the crank end. So waht that means is that 1g "big rods" will not fit a 7 bolt crank to my knowledge no matter what you do.
What needs to be machined is the top of the rod where the piston goes on to fit 95+pistons if that is what you are doing.

 

[rookieupgrade1]

The crank end of the rod is the same diameter but thinner on a 7 bolt. The pin enf (small end of rod) is the end that is differand diameter.

You have to either hone out the pine end or hone out the piston.

I will be honeing the piston to match the pin and the thickness of the crank end is a simple tsak of surface grinding it to size to match the width of a 7 bolt rod.

All of this I can do myself and forgo the machining cost. (God its good to be a machinst some days)

What I want to know is if you all think I can get away with the 7 bolt caps sinse the person I purchased the USED big rods from neglected to send the caps.

I don't see any problem with it except maybe the strength might be different. Although the rod side of the bearing takes the vast majority of the load.