knock othere then rod bearings?
 

can a bad spark plug, dizzy, wires, injectors, or any thing else make a knocking sound?
under the hood lightly reving i can hear a knock, not a tick a deepre knock like sound.

after i finished my civic (92 hb z6) got the saftey inspections air care bull ---- done i pulled the enging and droped in my othere z6 (arp head studs new timing belt water pump blah blah blah) + turbo set up. keeping the original.
before the winter i started to get a knocking sound after doing some 4th gear pulls up a big mtn. parked the car for winter.

tried changing a rod bearing (the one i thought it was, yes it had damage on it) still knocked. ---- it changed the engine
but no the othere one dose it to, and i swere it was in good conidition before i pulled it out and stored it (inside a shop all ports holes pluged with paper towels)
got the swap done last night started it ran fine, had a cell wtf? turned it off started again no cell.
let it warm up raved a little... knock very minor.
is there any way this can be caused by any thing else, every thing exept block and head was same ie mnifolds, injectors, spark plugs, injectors,
i cranked the engine for 10 seconds before hooking up the dizzy to let oil circulate before starting it (old mechaninc teacher told me this trick)

help me out nogs

Re: knock othere then rod bearings?
 

spun bearing ruins crank

Re: knock othere then rod bearings?
 

i know thats why im not driving it

Re: knock othere then rod bearings?
 

DId you have time to plastigauge the rod bearings? It doesnt take much, even just on the very high side of spec to give a little rod knock

Re: knock othere then rod bearings?
 

no, it was allot worse after the repair - that engine was fucked any ways (old owner didn't know ----)

im going to try and repair this one
i looked up and found out how to plastigauge but how do i check if the crank or rods are fucked?

Re: knock othere then rod bearings?
 

check the main bearings?

Re: knock othere then rod bearings?
 

You can measure the run out of the journals, that's a good place to start, but if it had a fucked rod bearing that crank might be toast.

If the crank is slightly askew it should chew up the thrust washer/bearing pretty fast.

Re: knock othere then rod bearings?
 

ill have a quick look at the thrust washer/bearing

went to the parts store today they have 3 different sizes of plastique gauge and 4 sizes of bearings :S
i grabbed 4 sets of stock size
question do i use the red gauge (stock gap?) to check the stock bearings if they fit
use the green/blue to see if i need over size bearings
how do i know how much over i need the bearings?
and whats the stock size?


will post lots of porn when i get a chance
thx in advance nogs

Re: knock othere then rod bearings?
 

Shop manual, even a Haynes, will have the bearing tolerances in it.

At least it should, I haven't looked at one in a while.