450C injection pump issues

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1010 crawler
1010 crawler
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Joined: Thu Aug 11, 2016 7:29 am
Location: Piney Woods of east Texas

Re: 450C injection pump issues

Post by amos » Mon Jan 15, 2018 9:16 am

tuney443 wrote:
Sat Jan 13, 2018 9:56 am
I believe the official name in my parts book is baffle.I'll have to look at it more closely to explain furthur.

On a related note--it seems on a C model, the turbo is for HP increasing.On my D dozer, it is an altitude compensating turbo which would make sense because it originally came from out West 34 years ago.Thoughts on that?
Hi Tuney,
Any non-computer controlled turbo will increase H.P. More modern computer controlled turbo's can be utilized for altitude adjustment only.
Briefly: a turbo increases amount of air(specifically the amount of oxygen in the available air) introduced into the combustion chamber. With increased available air and correct injectors a larger fuel air mixture is available. More fuel air mixture means more "bang" per cycle. More bang results in more H.P.
Computer controlled turbos actuate when a lowering of O2 in available air is sensed(O2 sensor). Very simply a dump valve is closed and turbo directs more air into the cylinders to compensate for low O2 read.
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