Posted by peter r on July 22, 2009, 11:07 pm, in reply to "EAS compressors"
144.139.163.70

The 2 pumps will interchange but it is not a straight swap . Differences .... The P38a pump motor is about 10mm longer . The P38a pump has a different head on the pump .( same other than 1 hole incomplete , could be finished to be the same but didn`t look at head workings ) The p38a air intake is into the crankcase . The Classic air intake is into the head . ( The compressor internals are the same .) All the end brackets/mounts will interchange but can only be used on the vehicle they came off without alteration . Pump end , brackets/mounts are wider on p38a . Pump end , bracket/mount is thicker on classic . The p38a rubber mounts will swap to the classic but not the other way with the original classic type . The wires are on the right side p38a and on the left classic , same connectors on both . To fit the p38a unit to our 94 .. Swap pump cylinder heads . Swap pump end bracket/mounts . Make new motor end bracket/mount . Pack dryer body up and angled so`s it clears longer p38a motor . The time consuming part is making the new bracket , used 1.8mm flat , mirrored the original but a little longer on the lower arms . It would have been quicker to use the existing classic mount/bracket and drill 2 new holes for the motor end mounts and cut the original threads off and use 2 new bolts . It would be easier to fit a classic unit to a p38a because only the motor end braket/mount would need to be packed out 10mm . ( single braket/mount end ) Cheers Peter . --Previous Message-- : Hi All . : : The Compressor on our 94 has been a bit : noisy of late , which i put down to mounts : or rubbing . : : Changed the mounts for P38 mounts , noise , : still there and not touching . : : Tracked it down to the ( may be something to : know ).....6201 twin sealed.... bearing that : is on the front/pump end of the compressor : motor . : : It has had a piston/rod/sleeve fitted a : couple of yrs ago by the previous owner . : : I broke 1 of the brushes when putting it : together in a rush and not taking enough : care . : : Made another 1 out of an old brush from the : old starter from the 85 , filed into shape . : : The above is only the lead into my question : ... : : : Other than the P38 compressor being mounted : upside down in comparison to the classic : type and the P38 type using 3 mounts where : the classic type uses 4 are the units the : same thing with different detachable end : plates , well 1 ends the same and 1s not ? : : Not clear ? : : Both compressors have what seem to be the : same plate for the 2 mounts on 1 end . : : On the other END 1 compressor has a plate : that is able to support 1 other mount and 1 : compressor has a plate that is able to : support 2 other mounts . : : On this END of both compressors are these : plates interchangeable thus making it : possible to convert a P38 type 3 mount : compressor into a Classic type 4 mount : compressor and the other way around . : : Cheers : : Peter . : :