Re: Re: Re: Re: weight of detroit 4-71

Posted by G Taylor on June 26, 2001 at 23:13:30 from (64.10.111.25):

In Reply to: Re: Re: Re: weight of detroit 4-71 posted by Burrhead on June 26, 2001 at 14:14:34:

The 2-53 used in 435 Deere's were not equiped with the emergency air shutoff.
We just set the air-precleaner on the intake pipe loose enough it can be yanked off & the palm of the hand over the intake stack.
If the oilbath aircleaners are overfilled, too light of oil used or an overspeed from other causes it will draw the oil up & away she goes. We did the dry filter conversion.
A new blower seal(s) is now used on 53 series blowers to reduce chances of engine lube oil being drawn in. Requires a cutter to machine the blower end plates.
If rebuilding a non-turbo engine use the 21 to 1 "N" series piston,sleeves & injectors.Use new valves & valve seats. Old reground equipment sinks the vales & lowers the compression causing hard starting. Keep the sleeve tops at exactly the same heights too or sealing will be troublesome.
New 10-1/2 turn cam follower springs & the latest valve springs will allow 2400rpm max under load on a two valve head. Four valve heads use two different valve springs depending on the high or low lift cam being used.Either are rated for 2800rpm max governed load.

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