lock washers for manifolds? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Llay R. Rac · 04-19-2017, 09:59 PM

I am replacing my exhaust manifold. i had lock washers on the two back bolts (the bolts were loose anyway), but no lock washers on the rest. i made a french lock for the rear bolt but that didn't hold for long.
googling whether lock washers are necessary or not gives me mixed results, some say definitely, some say not a good idea.

loose bolts and exhaust leak from the rear has plagued this engine (stock 292) for 40 years, i really want to solve that.
does anyone use lockwashers?

04-19-2017, 09:59 PM	#1
Llay R. Rac Registered User Join Date: Jul 2016 Location: Arizona Posts: 324	lock washers for manifolds? I am replacing my exhaust manifold. i had lock washers on the two back bolts (the bolts were loose anyway), but no lock washers on the rest. i made a french lock for the rear bolt but that didn't hold for long. googling whether lock washers are necessary or not gives me mixed results, some say definitely, some say not a good idea. loose bolts and exhaust leak from the rear has plagued this engine (stock 292) for 40 years, i really want to solve that. does anyone use lockwashers? __________________ 1965 Suburban, 2 wd.,292, 4-speed. proudly owned and operated since Valentines day 1969.



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