rod bolts

[jeffheiger]

I'm building a 2056 for my Ghia, looking for a little more 50mph to 90mph "Grunt". I don't want to break apart the engine yet, but want to run it to get used to the type 4 engines character.

I understand that the stock rods are good, but that the bolts are the weak link. I have an idea that I can replace the bolts by carefully removing them, one at a time, out the piston/cylinder spigot. I take one out, replace and tighten, and then the other. The bearing halfs stay in place, and then they get torqued to spec.

Has anyone tried this?

And this is a GB series engine from a 76 automatic bus. Does anyone have the cam lift and duration number?

thanks, Jeff

[raygreenwood]

You will need to remove the rods. Replacing the rod bolts will mean having them resized. Its worth it to have them balanced while the yare out. Ray

[Wally]

I understand that the stock rods are good, but that the bolts are the weak link.

I respectfully disagree.
Maybe for a 7500 rpm screamer, but for 95% of the 2056 engines which usually don't rev crazy and make power at or below 6000rpm, not neccesary imo.
I have never met somebody or heard from anyone that they had lost a 2,0 rod in a tuned type 4.

My own 143 hp (@ 6k) 2056cc has stock rods with re-used rod bolts as well...