Omix-Ada water pump pulleys
Posted: Fri May 11, 2012 12:53 am
I found this comment on our sister Yahoo site.
From "L134 Ted" <roett@aanet.com.au>
To <M38-M38A1-M606@yahoogroups.com>
Date Thu, 10 May 2012 14:14:21 -0000
Reply To <M38-M38A1-M606@yahoogroups.com>
I do not have a M38 Jeep but do play with L134 and F134 Willys engines most days. When I spotted a photo of a M38 engine with its twin V belt crankshaft and water pump pulleys it seemed logical to look for these parts as a 'Willys factory' way of creating the twin narrow V belt pulley drive I need for a L134 engine project.
I ordered a billet steel crankshaft pulley from Midwestmilitary and then got a new Omix-ADA M38 water pump. When both items finally arrived in Australia I was disappointed to find that the centre to centre distance between the V belt grooves were different. The water pump measured 1/2" and the crankshaft pulley measured 11/16" so I had either wasted my money and time on a water pump or on the crankshaft pulley.
After checking with a few sources and comparing what I had to an original M38 engine it was obvious that the water pump pulley was made to an incorrect drawing. I wrote to Omix-ADA Tech Support and got the reply back that "This is the absolute first time I have heard anything about this, but to be honest I do not deal with the M38 parts much. I will ask around the office and see what I can find out."
Midwestmilitary and others told me that the water pump pulley problem was well known and the reason they didn't sell that brand M38 pump.
I asked if the company had corrected the problem and would supply a replacement (correctly made) pulley. A week later I got a reply acknowledging the problem but with no mention of a replacement dual V pulley. I copy the Omix-ADA reply in full below as it may help another M38 enthusiast who has a dud Omix-ADA water pump sitting under the bench or on an engine turning V belts inside out.
Best Willys Regards
Ted Robinette
Ted,
As a company policy we do not send out the technical drawings. To get more to the heart of the issue, I have found that a limited amount of our stock does have the ½" center to center of the double V's that you are referring to. We are working with our manufacturing partners to have this corrected and have removed the pieces with the ½" measurement from stock. It is possible that some of our stocking dealers still have some on their shelf, and we are working to get this inventory back as well. I thank you for bringing this issue to our attention so we can correct anything that need to be corrected. Another observation, we sell a great deal of these water pumps and have no significant return history. It is my belief that this product was correct (from our previous orders) and was changed (currently investigating why any change was made) on our most recent shipment.
Thank you
Omix-ADA Tech Support