Thread: 1 hour of run time and the engine knocks!!!

Determination wins the RACE!

Glad to see you got her back purring again.

Well...back to square one! the noise went away for a while then came back.

All the rods/pistons make the same noise when there is compression or engine movement.

for example, I remove all spark plugs and crank over-no knock. If I install spark plugs (add pressure) the engine makes the metallic knock.


.020mm are the main bearings measuring with plastigauge.

something loose?

This is the case for all 4 cylinders.

Are using the same crank? I thought you were going to use new rods and pistons?.

I used the stock VE rods and pistons.
I wanted to make sure that was my issue first.

Do you mean .020in or .002in because the high limit on FSM is .0018 so anything above that its loose!!

0.020 - Metric

Can you take a vid and post up of the noise?

I will get one up ASAP.
thanks

Sounds like bad piston to wall clearance.

http://s1178.photobucket.com/albums/x363/mcholdec2010/?action=view¤t=B4A20F5C-6632-4383-AD18-E85D364F8BD9-19211-0000022310B49D34.mp4&evt=user_media_share

PM sent, you'd hear piston to wall clearance on start up but once it's warmed up it usually goes away, you really should only have to do like 5 seconds of actual honing to get a new surface if the cylinder was good, and you gotta move the hone up and down quick so you can get the cross hatch angle that seats the rings quick.