The Ford Barn

3W Hank · 11-01-2025, 07:27 PM

About TQ plate on the FH.

I has a Merc 41 block ported back in the days I bought in LA, but it had a crack from exhaust port to the cylinder ( but very nice port work ) and the fellow sold had it for over 30 years and history it was from a racer and brought it back the the machine shop in Burbank area. I guess could been 50’s or 60’s and it’s 1/8” over std.
When I bought it has been sonic tested and it was over 0.25” wall ( no one believe that ) but pressuare test showed a port hole in 1 cylinder so I bought a 3.5” OD sleeve.
Sleeve its now mounted and idea is hone it equal size and order custom pistons from Ross.
That will be a hair over 1/8” over std ( or .125" )
Block had been in hot tank twice and also laser cleaned.

-So the question is before hone, do this block’s like TQ plate or how is bolts effects cylinders ?
I can make a TQ plate cant find blue prints of bolts.

11-01-2025, 07:27 PM	#1
3W Hank Senior Member Join Date: Feb 2022 Posts: 578	TQ plate FH About TQ plate on the FH. I has a Merc 41 block ported back in the days I bought in LA, but it had a crack from exhaust port to the cylinder ( but very nice port work ) and the fellow sold had it for over 30 years and history it was from a racer and brought it back the the machine shop in Burbank area. I guess could been 50’s or 60’s and it’s 1/8” over std. When I bought it has been sonic tested and it was over 0.25” wall ( no one believe that ) but pressuare test showed a port hole in 1 cylinder so I bought a 3.5” OD sleeve. Sleeve its now mounted and idea is hone it equal size and order custom pistons from Ross. That will be a hair over 1/8” over std ( or .125" ) Block had been in hot tank twice and also laser cleaned. -So the question is before hone, do this block’s like TQ plate or how is bolts effects cylinders ? I can make a TQ plate cant find blue prints of bolts. Last edited by 3W Hank; 11-02-2025 at 05:25 PM.