Loud rattle after modding the plunger 1.6TD

[Szopenn]

So now I can tell you....

you are for sure not acquainted with WUZETEM company.  This is a local manufacturer of diesel injectors of very high quality... I called them, I gave them the sound of the engine...  the technician I spoke to said it might be improved, they are willing to solve such problems and the issue lies on the part of the injectors mainly, he tried to explain the parameters which fail in this config... but it was hard to have a clue  what he was saying... it referred to some kind of suppresion values...

I was asked to deliver oem specs for the pumps that the plungers comes from, send it to them together with the measured output of my present pump and they will let me know.... they are even able to manufacture an injector for such an application... might be costy..  I am to deliver it by Friday but I am down with a sore throat so... perhaps next week


and... I would not be so sure, on the basis of what I was told, it seems that marrying TDI and TD injectors is not such a good idea, as far as I get it.. I might be lucky with the 10mm plunger coming from an OEM TD pump... (which I bought anyway - croma 2.5TD), however, I will wait until I can finally drive my car since it is on the verge of being restored....


anyway, do you know the oem pressure values for AAZ duble spring injectors? has anyone experimented with them, I mean.... pressures??? Should I go low like 135/155 or to go hi like 155/200..... I like AAZ injectors, stock ones (borrowed from my friend's aaz) made my engine idle very very nice, with the AC switched on, they makea world of difference.....

whatever the final outcome of the things is going to be, I will definetly stay with the double spring injectors...

[libbydiesel]

I made a pump almost exactly like that.  1.6TD pump with 10mm eTDI plunger, gov mod, greater than stock dynamic advance.  I used an AAZ camplate, tho, due to the mismatch of the plunger foot and the 1.6 camplate.  It was very rattley initially but I got it sorted and it ran exceptionally well.  I'm sure you will get yours sorted too if you keep at it.  My initial post was an attempt to help.  Starting with a very simple diagnostic approach I hoped to gather more information in order to give good advice.  It was meant to be helpful but apparently from your response you are not interested and already have all the answers you are seeking.  I will try to avoid that helpful impulse with you in the future.  I look forward to hearing your results and I hope to be entertained regardless of the results.  As I said before, good luck with your pump.    

[Szopenn]

I left the 1.6TD camplate and machined the double sized pin. I wrote in the first post that timing advance does not make a difference so there is no point in  repeating the same ideas if I am politely asking for some more suggestions....

I can give you the sound of the hot engine which is almost perfect... but.... for me still loud.... for my ear it is a sound of some random and uncontrollable  injection which should not take place even if you consider it 'normal', of course you can drive it....

engine hot
http://vocaroo.com/i/s1AFnFjxgHle

[libbydiesel]

Timing advance - does not bring results.

Was that supposed to be deciphered to mean that you had tried a wide range of static timing settings both advanced and retarded and that made no difference to the rattle sound?  Interesting.  Please don't misconstrue my comments as another attempt to be helpful. 

[Szopenn]

yes indeed

I have  tried a wide range of static timing settings both advanced and retarded and that made no difference to the rattle sound...

now you happy??? or should I apologise.... so I apologise now.... happy?

[libbydiesel]

You have neither the power to make me happy nor unhappy.  I am not looking for anything from you.  I am here purely for the entertainment.

[bbob203]

 

[Szopenn]

I am here purely for the entertainment.

yeah, I managed to notice but could you please look for the entertainment elsewhere??? I think my post has nothing to do with the entertainment...


thank you...

[bbob203]

What you don't know is libby is probably your biggest source of help and you told him to piss off right from the get go.

[flowmastergfunk]

You have neither the power to make me happy nor unhappy.  I am not looking for anything from you.  I am here purely for the entertainment.

Hahahaha Namaste, holmes. Such a noble role model. If there were a stickied thread of "How to behave when others exhibit building tensions in a thread", that quote should be the opening post.

Ohmmmmmmmmmmm 

[Szopenn]

As far as I understand you always adjust timing advance, even if you have to retard it...

I am very sorry that some people make a fuss because  they try hard to play with the meaning, (which was ok anyway), instead of focusing on the real
problem

I have never seen any manual referring to "timing retard adjustment....".. I always see timing advance adjustment or timing adjustment.........


so please delete the thread because it is not informative anyway...., looks as if I have coped with my problems myself so far... so let it be.....


thanks everyone for your input

[libbydiesel]

There is 'static timing' which is the base setting usually described as 'timing the injection pump'.  There is the 'timing advance' or 'dynamic timing advance' which is the internal piston mechanism which advances the timing of the injection event based on internal pump pressure which is dependent on RPM.  If you say anything about adjusting the 'timing advance', the most logical assumption is that you are talking about adjusting the timing advance (changing spring rate or preload of the advance piston), not the static timing (rotating the pump in its mounting).  

[Szopenn]

ok, this is a good suggestion, I will try to decrease the pressure of the pump now because since giving her the timing mod, I haven't played with it.... I suppose it won't get rid of the problem but at least another thing to check and will look how the engine will react...

[745 turbogreasel]

Just for a laugh, try  running on some plant oil.  If it reduces the noise that is bothering you,  you can attempt to tune  to match that effect.
I think it has reduced the  clatter in every engine Ive run  it on, except maybe the Cummins which is so loud  it's hard to tell.

[RustyCaddy]

Having donned my flame suit...IIRC reading that Giles removes most or all of the dynamic advance in a lot of his pumps; would that help?