Steps, your "numbers" dont make any sense to me ? What do you mean by the piston measuring 24/1000 ? Are you telling me that the piston in question had .024" Piston to wall clearance ?
No that is how much #5 piston shirt has colapsed!!!
Diam justbelow the bottom ring
Diam at the bottom of the shirt
= 24/1000" and thu that is the worst, ALL of them are nearly as bad.
1436 is a Silvolite piston number, not Sealed Power.
Now this starts to get even more interesting..Im not doubting you guys..that why Im not wasting my time askingt here asking
So what would Silvolite pistons be doing in a Speed Shop in Sealed power boxes...
The engine/piston HAS NOT got hot or over heated!!!!
If the piston got hot enough to collapse it, you have some other problems, in my opinion.
The knock was there when 1st fired up and run the cam in....
It is a LPG designed Stump puller engine ...they run cold, max temp reached was just under 170*....The engine has now been Completly stripped...there is NOTHING to signify ANY over heating /wear or ANYTHING like that ANY WHERE.
Repeat Raditor had headers removered and physically cleaned out the cores etc...New oil pump and pressures at all times was great...Dyno just after break in to confirm dizzy curves /mixtures etc
I have had this matching number '69r for 27 yrs AND going to keep till I reach my use by date in another 25/30yrs...Hence why EVERYTHING is fully balanced, 2x and 3x checked, plasti gauged...
Other than the knock this car performed exactly as I designed it to do (no a bit better than that)...from designing the billet cam to machining in the dizzy to get the right curves.
Sry for sounding grumpy m8...Im not..put it down to my Kiwi accent lol
Pics...everything has just gone down counrty to my machinest to be re balanced new Aussie ACL pistons, honed etc etc.
Sat here will see if I get time on Mon to drive down on Monday.
What how where angle do you want pics of the piston(s)?
Have had 3 other experts look at them now
2 say "crook pistons, either they where colasped before install, or a bad alloy/casting and collasped as the engine warmed up"
1 says hes "sent several of these back to suppliers because of suspect bad casting before...looks like collasped as the engine warmed up"" At the time I did not mention brand name or anything like that..just let him look at them and comment un biased.
Realy appreciate your support guys