crank dowels Q

hardtimes

hardtimes

Well-known member
How important , in you experience, is it to install the two dowels in the crank end ? My C crank has had work and for some reason the two dowels seem to have a loose fit. Should I Loctite them or just leave them out :confused:?
 
Dear hard times,
Yes, the dowels at VERY important. Without them, there is a great chance that your flywheel bolts will shear off and cause many problems.
 
hardtimes said:
How important , in you experience, is it to install the two dowels in the crank end ? My C crank has had work and for some reason the two dowels seem to have a loose fit. Should I Loctite them or just leave them out :confused:?
Click to expand...

I had the dowels work loose in my Winfield flathead engine. I tapped them out to 1/2 20 and found some 1/2 20 ARP flywheel bolts that I'm using I use 7/16"ARP 12 point flywheel bolts with locktite.
 
just plain bill said:
I had the dowels work loose in my Winfield flathead engine. I tapped them out to 1/2 20 and found some 1/2 20 ARP flywheel bolts that I'm using I use 7/16"ARP 12 point flywheel bolts with locktite.
Click to expand...

Hey Bill,
Also, very good ideas, thanks for sharing your experience. Trouble is, my crank is already in shortblock form ? And, do not want to disassemble ..again ! Won't be able to push the 1/2 20 tap thru, as the rear seal prevents that ?
 
hardtimes said:
Hey Bill,
Also, very good ideas, thanks for sharing your experience. Trouble is, my crank is already in shortblock form ? And, do not want to disassemble ..again ! Won't be able to push the 1/2 20 tap thru, as the rear seal prevents that ?
Click to expand...

Use a bottoming tap.
 
hardtimes said:
Hey Pete,
I happen to have a 1/2 20 tap. You saying that it doesn't necessarily have to tap thru ? I notice on bottom tap, that the first 1/8" or so does not make a complete thread.
Click to expand...

My bottom taps will cut to the bottom of a drilled hole.
Just grind off the lead in and it should go all the way down.
 
just plain bill said:
I did tap mine with crank in the block. Tapped with plug tap until tap close to seal then used bottoming tap to finish. I buy hand taps in sets, start, plug, and bottoming.
Click to expand...

Hey Bill,
Learn something new, when awake, every day ! Will look for a 'set', before cutting the only one I have down. Thanks :) !
Since I've already got six flywhl to crank bolts, guess adding these two, plus locktite, as studs will make 8 ! Don't think that it will come lose then ?
 
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