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M W 400 dyno (trouble)

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farmboyWI

10-23-2012 18:16:36




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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!

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c.hess

10-24-2012 10:16:22




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 Re: M W 400 dyno (trouble) in reply to farmboyWI, 10-23-2012 18:16:36  
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.



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curtis larson

10-23-2012 19:52:53




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 Re: M W 400 dyno (trouble) in reply to farmboyWI, 10-23-2012 18:16:36  
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.



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jerry he

10-24-2012 04:52:24




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 Re: M W 400 dyno (trouble) in reply to curtis larson, 10-23-2012 19:52:53  
We have one that has a coil of flex copper in it.



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