engine main caps and Question(s)

[dohcfiend]

i have started a rebuild and taking heaps of parts to the machine shop but for the life of me i can't find the main caps anymore.

i have another block laying around for mockup purposes. this one appeared to have spun a rod bearing. can i use the main caps off of this motor in place of mine for the rebuild?

also i cannot find the nuts that hold on the windage tray, can i just use like the nuts off of the exhaust manifolds for that? or were they special in some kind of way?(doesn't look like they were is memory serves)

[SappySE107]

RE: engine main caps and Question(s)

Loctite the windage tray nuts, that should take care of it. As for the mains, I believe the newer 3400 mains are better quality. They are meant for the other oil pan but even so, they may fit and be better.

[RacerX11]

RE: engine main caps and Question(s)

The windage tray nuts I have look identical to the 3X00 exhaust manifold nuts. I have even interchanged them. They are the distorted nuts (don't remember the name for them) that don't back off.

Marty

[dohcfiend]

RE: engine main caps and Question(s)

sweet, i have plenty of extra exhaust manifold nuts laying around. the machinist said if i use caps from a different 3.4 dohc it would have to be align bored. or is he just trying to saok me for some dough?

edit: or was is line bored?

[perfimage]

RE: engine main caps and Question(s)

It will have to be line(align) bored. In a perfect world, you should be able to simply swap them, but the machining process even has tolerances that vary from one block to the next.