MoparGuy68
Well-Known Member
Here we go again, with reproduction parts that aren't machined properly..
This time it is Exhaust Manifold Fastener Kit #MREHF8065 from Mancini Racing. Supposed to be for 68-74 B & E Body 383/440. The coarse threads on the studs WILL NOT screw into the threaded holes in my 383 Magnum heads. These studs are supposed to have 3/8" - 16 coarse threads.
My new Moroso, made in USA, 3/8" - 16 header bolts DO screw into my heads. I bought the Moroso bolts for my headers which turns out I cannot use with that Borgeson box.
The 3/8" - 16 studs I bought at Ace Hardware DO screw into my heads. I bought 4 of those, weeks ago, for first and last position for my header flanges..
The coarse threads on the studs in the Manifold kit are TOO WIDE in width. The spacing is correct but the threads are WAY too wide!!! I have already chased all 12 of those holes in both heads, weeks ago, and they are all CLEAN, so it's not my heads that are the problem.
Only thing usable in this "kit" are the fine thread 3/8" - 24 nuts and 3 sleeves. The studs are unusable. I paid $38.95 for this crappy kit.. Classic Industries sells what looks like the exact same junk, so be warned..
This time it is Exhaust Manifold Fastener Kit #MREHF8065 from Mancini Racing. Supposed to be for 68-74 B & E Body 383/440. The coarse threads on the studs WILL NOT screw into the threaded holes in my 383 Magnum heads. These studs are supposed to have 3/8" - 16 coarse threads.
My new Moroso, made in USA, 3/8" - 16 header bolts DO screw into my heads. I bought the Moroso bolts for my headers which turns out I cannot use with that Borgeson box.
The 3/8" - 16 studs I bought at Ace Hardware DO screw into my heads. I bought 4 of those, weeks ago, for first and last position for my header flanges..
The coarse threads on the studs in the Manifold kit are TOO WIDE in width. The spacing is correct but the threads are WAY too wide!!! I have already chased all 12 of those holes in both heads, weeks ago, and they are all CLEAN, so it's not my heads that are the problem.
Only thing usable in this "kit" are the fine thread 3/8" - 24 nuts and 3 sleeves. The studs are unusable. I paid $38.95 for this crappy kit.. Classic Industries sells what looks like the exact same junk, so be warned..
