so I was installing the timing chains but the plunger on the tentioners were bottomed out.
this is due to the TFS head design moving the cams make the chain tighter than OE. So I’ll be taking the tentioners apart and having the piston turned down .100 and try again. Always somthing ??♂
The piston just needs to travel a minimum of .050 (1.27mm) but the chain guide CANNOT contact the tentioner housing.
So I’m going to do .100 and check it. If more is needed I’ll do .050 and check again.
So I get .191 between the guide and tentioner housing with the tentioner piston in stock form.
I then removed the piston and installed the tentioner. I simulated oil pressure with a wedge and took a reading of .111 so .191-.111= .080 off the tentioner to get same reading as without piston installed.
So add the .050 needed for piston movement and I should remove .130 material from the base of the piston to get me to the proper length needed.??
Installed the last hose end today.
now I need to order a new fuel filter for this Fuel Lab. Iirc 12micron paper for E85 is ideal? ??♂ I’ll install the fuel system while I wait on the machine shop to cut down the tentioner pistons.
Well the shorter tentioner pistons didn’t resolve the issue.
It’s common for the left side to be a little tight with TFS heads but not the Right side... ?
I believe the new Cloyes chain’s have the China ?. Made in (Chi-Na) so I’m praying ?? the stock OE chains resolve the issue.
I tried the plastic guides and the old style cam gears that were fine on my last short block and no joy. So it’s the chain’s or the short block is fucky somehow. ??♂
Here's what I see..., the chain nubs are not even with the TF links, vs the OMM chains. This could cause the chain to ride higher on the gear... making them shorter.
Do you have any used OEM chains, Try one of those...
They do ride high on the gear. Enough to see daylight through the lower saddle. But that’s with the new comps, old Comps and the Cloyes adjustable gears that are no longer available. I confirmed this today. My chains I have now are in the 1st and last pic..they seem to ride higher..