DAF 575 turbo rebuilt or exchange engines

[DBA Forum (B) - Noel Parry]

Has anyone experience in replacing existing DAF with a rebuilt exchange engine? The motor runs well, has a good power spread but smokes like the devil.
Cheers Noel Parry

[DBA Forum (B) - Frank Kordbarlag]

it smokes like a devil because it´s a DAF... A new or rebuild will do excactly the same. I have spend 8 years and some money to stop my bowthruster engine (DAF) smoking. I will change to a class 6 MAN with 250HP as soon as possible.

[DBA Forum (B) - Chris Grant]

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[DBA Forum (B) - Noel Parry]

Thanks for the replies. Especially your advice on additional costs Chris. And yes Frank, I love new motors to.
I guess my main concern, apart from aphxyation in tunnels and locks (we usually turn the engine off in moderate lock conditions) is the response we will receive upon venturing into Germany.
Noel

[DBA Forum (B) - Frank Kordbarlag]

There are no emission controls in Germany for barges or boats - yet. I would get very rich it they where introduced because I would loose my entire competition....

[DBA Forum (B) - David Beaumont]

Ran my DAF 475 recently after a long break, started first time as it usually does but this time no smoke. In fact often there is no smoke, more often the blue smoke is there at start up and disappears quite suddenly after running for, say 20 minutes. I had assumed a ring was sticking and releasing. On the odd occasion it used to smoke for long periods.

So I don't know if I have fixed it for good, hope so.

Here are the things I've done over the years that may be have helped:

Changed to straight 30 oil
used Ambusta glaze buster in the diesel
used STP diesel treatment which has a cetane booster
fully lagged the exhaust
adjusted the variable oil pressure down
thoroughly changed the oil (drained the oil cooler) so it stays gold after a change rather than the usual immediate turn to black.

I never pinned down if the smoke is oil burning or diesel not fully burning, I came to suspect the latter when cetane improvers added to the diesel seemed to help. The glaze buster seemed to help too though, perhaps it included cetane improvers.

David

[DBA Forum (B) - Charles Fitzhardinge]

Lika a Dutch workman, if it ain't smokin", it ain.t workin'!
Charles Fitzhardinge
Anna Maria (and her 1976 DAF615M - smokes when cold but fine after 15 minutes).

[DBA Forum (B) - Noel Parry]

Thanks David, some good practical answers, will try them all. I always thought though that a fuel/air problem produced black smoke. Freeing up the rings with additives sounds like a good idea. What oil pressure are you now running at?
How does the fully lagged exhaust help with oil burning?
I am interested as to why Daf's smoke as a given rule. A 1920 Ford truck runs cleaner.
Like I said earlier, I like everything else about our 575, they are a great motor to cruise with, it's just this grey smelly smoke, that for any era should not exist.
Cheers, Noel

[DBA Forum (B) - David Beaumont]

[quote="Noel Parry" post=56520]Thanks David, some good practical answers, will try them all. I always thought though that a fuel/air problem produced black smoke. Freeing up the rings with additives sounds like a good idea. What oil pressure are you now running at?
How does the fully lagged exhaust help with oil burning?
l[/quote]

Black smoke is too much diesel being burnt/not enough oxygen. It's soot. Whitish blue smoke can be either oil getting past the pistons and being burnt (normally blue) or the diesel not being fully burnt (more likely white) often because the cetane rating of the diesel is too low.

The additives either boost the cetane or remove the cylinder bore glaze.

Oil pressure now about 40psi max. The adjustable valve is just for pressure relief so it only limits the max pressure not the minimum.

Lagging the exhaust probably didn't help but just possibly it promotes fuller combustion by reducing back pressure. My exhaust is quite long and is now double lagged. It's worth doing anyway to improve engine power and efficiency, safety and it makes the engine room and back cabin more comfortable.

David

[DBA Forum (B) - David Beaumont]

correction it was 'Ambesta glaze buster'. I'm pretty sure it is discontinued. It was a diesel additive not an oil replacement as the new 'glaze busters' appear to be. I wouldn't expect the oil versions (which seem to be just thin engine oil) to work nearly as well.

It definitely helped but as I say it may have been just by improving the cetane rating of the diesel rather than by removing bore glaze.

David

[DBA Forum (B) - Graham Johnston]

We are fully paid up members of the DAF Smokers Club.
825 - followed everywhere by a robust blue haze.
Thanks David for the info about minimising or stopping it
Graham
EFFORT

[DBA Forum (B) - Gordon Mackenzie]

The other thing to check is make sure it reaches proper working temperature if the thermostat is not working correctly and it stays too cool you will smoke as well.
Gordon

[DBA Forum (B) - Noel Parry]

Thanks, She sits on 80-85 celcius. Which In thought was about right
Noel

[DBA Forum (B) - Janice Wallace]

Hi,
Having just became the owners of a 37m ex bunker barge for conversion we also have a DAF 1160. Getting a bit of black smoke which could hide any blue. On a forty hour run from Liverpool to Fort William it never used a drop of oil. Starts instantly.

These engines were used in buses and trucks and I don't recall them belching smoke everywhere so getting them right must be possible.

Derek

[DBA Forum (B) - Eric Stott]

Hi Derek, I used to run a fleet of 1160 dafs as you say no blue smoking problems as they used to work hard at full revs most of the time pulling hard, we did however have one that smoked, the shunter in the factory that spent the majority of its life ticking over which illustrates how in barges without full torque working polish the bores and consequently blue smoke, an easy life is no good for a daf!!!
Kindest regards Eric

-----Original Message-----
Forum (B) - Janice Wallace [mailto:dbabarges-pvYRptiajiAdnm+***@public.gmane.org]
Sent: 03 August 2014 10:16
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575 turbo rebuilt or exchange engines


Hi,
Having just became the owners of a 37m ex bunker barge for conversion we also have a DAF 1160. Getting a bit of black smoke which could hide any blue. On a forty hour run from Liverpool to Fort William it never used a drop of oil. Starts instantly.

These engines were used in buses and trucks and I don't recall them belching smoke everywhere so getting them right must be possible.

Derek