The Ford Barn - View Single Post

Synchro909 · 07-24-2020, 06:24 PM

When I took delivery of my 1928 Tudor from the US, I didn't know the engine had had a "freshen up". The job they did on it was pretty lousy and when I put a 5,5 head on it, I too got a knock from it (sound familiar?). I stripped the engine and found 0.005" over sized gudgeon pins had been installed. This was done by either reaming or honing the bushes to suit, only they went too far and they were loose, causing the knock. A new set of bushes properly installed all is good now. It may be worth your while checking them.
BTW, the bronze they use in those small end bushes is nearly impossible to ream - terrible stuff.

07-24-2020, 06:24 PM	#12
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 7,496	Re: Help diagnosing engine knock When I took delivery of my 1928 Tudor from the US, I didn't know the engine had had a "freshen up". The job they did on it was pretty lousy and when I put a 5,5 head on it, I too got a knock from it (sound familiar?). I stripped the engine and found 0.005" over sized gudgeon pins had been installed. This was done by either reaming or honing the bushes to suit, only they went too far and they were loose, causing the knock. A new set of bushes properly installed all is good now. It may be worth your while checking them. BTW, the bronze they use in those small end bushes is nearly impossible to ream - terrible stuff. __________________ I'm part of the only ever generation with an analogue childhood and a digital adulthood.