M W 400 dyno (trouble)

farmboyWI · Oct 23, 2012

Ok, I ran the thing this weekend, maybe 5min. Found out the heat exchanger leaks bad (drained out a full tank of white slop). Took the heat exchanger to a radiator shop yesterday and today they showed me how the tubes on the end were so thin you could almost stick your finger through them. He thought it might be electrolysis or something in the oil eating away the copper. Anyway, it’s junk and I’m looking at a new one being custom built for (he’s guessing) $800- $1000 unless I can find one elsewhere. Anyone have/know of a good one for a P-400A? Thanks!

curtis larson · Oct 23, 2012

I put an hyd oil cooler from a Case back hoe/ the cooler in front of the rad./ in mine. There is only water pressure from the garden hose, no oil pressure. Perhaps even a large trans cooler from your parts house will work.

Jerry He · Oct 24, 2012

We have one that has a coil of flex copper in it.

c.hess · Oct 24, 2012

On the old Case-Taylor dyno didnt you control water temp by watching temp gage an adjusting warm water output. Seems i remember water running down alley I am not familiar with M-W but would that be another way for you to control heat build up.
After reading your post again sounds like you are cooling oil so above idea probably no good.

M W 400 dyno (trouble)

farmboyWI

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curtis larson

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Jerry He

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c.hess

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