Fuel pump governors

[Andrew_Fanner]

It appears that the DPA injector pump on my starboard engine is possibly BER, certainly the local engineers are muttering several hundred£ to recalibrate a hydraulically governed pump.

I've seen some possibilities on ebay, in itself unusual, but they look to be mechanically governed rather than hydraulic.

Probably a daft question but is it OK to mix and match governor types? I dont see why not, which may mean there is an excellent reason not to! I'd have to hope that setting the timing did not need anything too complex (no fiddling with timing gear cases or taking the rocker box off as my talents or wallet don't run that far!) just aligning the marks.

Its that awkward scenario where it all starts and runs fine, just the river speed smoke is becomeing embarrassingly persistent.

 

[Latestarter1]

It appears that the DPA injector pump on my starboard engine is possibly BER, certainly the local engineers are muttering several hundred£ to recalibrate a hydraulically governed pump.

I've seen some possibilities on ebay, in itself unusual, but they look to be mechanically governed rather than hydraulic.

Probably a daft question but is it OK to mix and match governor types? I dont see why not, which may mean there is an excellent reason not to! I'd have to hope that setting the timing did not need anything too complex (no fiddling with timing gear cases or taking the rocker box off as my talents or wallet don't run that far!) just aligning the marks.

Its that awkward scenario where it all starts and runs fine, just the river speed smoke is becomeing embarrassingly persistent.

You are lucky to have found pump shop prepared to mess with the nasty DPA hydraulically goverend pump. CAV were desperate to obsolete the old pump in the 1970's however many customers, M.O.D were worst offenders insisted on retention of the old style pump, so it remained in production on many 6.354's long after its sell by date.

Mechanical goverened DPA pump is a FAR better widgit, parts freely available and cheaper than the geriatric Stanadyne derived thing, also fits without timing mods.

Even better/best widgit is to use Bosch VE which was fitted to Dot 4 automotive T6.354 however requires a timing change, Bosch Vs CAV, one is timed beginning of injection the other end of injection.

If you get a mechanically governed DPA for a T6.354 get the injector lines as well.....they are different and cost $$$$$$$$$$$ new.

Good luck

 

[Andrew_Fanner]

>>>
If you get a mechanically governed DPA for a T6.354 get the injector lines as well.....they are different and cost $$$$$$$$$$$ new.
>>>

Ahh, now that's a possible problem. I naively assumed they would be a stock part, injector#1 pipe being the same regardless of pump type. As I've seen two on ebay it may be wise to get the very cheap one and not the expensive but BNIB one.

Nothing is ever easy:-(

As for a pump shop willing to mess with the pump, I wonder now if the large sum they wanted is representative of "we dont want the work but if the sucker will pay"...