Back flushing 640 engine block suggestions?

Doug (OH)

Member
Hi all, it's been awhile since I've been here. Does anyone have suggestions on the fittings/adapters/methods for connecting a garden hose to the 1/4" engine block drain? Thanks in advance.
Doug
 
(quoted from post at 18:09:47 05/23/19) Hi all, it's been awhile since I've been here. Does anyone have suggestions on the fittings/adapters/methods for connecting a garden hose to the 1/4" engine block drain? Thanks in advance.
Doug
I would use a 1/4"black pipe nipple a 1/4"X1/2"black pipe coupling and a 1/2 male iron pipe thread X female hose adapter
 

You can get it a little cleaner by removing your temp gauge sending bulb for part of the time.
 

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