Polo 9n tdi fuel filter mod?

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PoLonY
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Re: Polo 9n tdi fuel filter mod?

Post by PoLonY »

Well on your car going less then 10 micron isn't really worth the money tbh

CAT has the 2 micron filter due to the new injector tolerances on the latest range of engines

Did you try Filter and Hose solutions?

They often had heads made up for specific filters etc

They'll courier I'm sure

I used to work there


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Re: Polo 9n tdi fuel filter mod?

Post by Ashveer03 »

The 2 micron filter is not expensive bud. Their agents selling it at R270. Its still cheaper than oem type filter.

I tried all the donaldson dealers in durban, they checked with other branches with no luck.. I will try the guys u suggested on monday.



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Re: Polo 9n tdi fuel filter mod?

Post by PoLonY »

Ashveer03 wrote:The 2 micron filter is not expensive bud. Their agents selling it at R270. Its still cheaper than oem type filter.

I tried all the donaldson dealers in durban, they checked with other branches with no luck.. I will try the guys u suggested on monday.



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The filter is the cheap part

I was referring to the whole head and filter etc

Check with them about their Toyota D4D 1 micron kit

If they still do it it was a nice head and filter combo with fittings etc we used to fit to the Hilux Bakkies
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Re: Polo 9n tdi fuel filter mod?

Post by Ashveer03 »

Cool thanks bud il do that.. When i called cat their price for the head is almost 3k. Donaldson has a replacement filter and head for the cat 1r-0750, i wanted to get the donaldson head and use a cat filter on it as its the same thread, but none of their branches have the head in stock. Their head is quite cheap about R300.

I will call them tomorrow though

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Re: Polo 9n tdi fuel filter mod?

Post by Ashveer03 »

Been abit busy the past few weeks, inbetween the hectic schedule i managed to call a few more places including filter and hose solutions in boksburg - spoke to a rude dude who was of no help.

Sourced 1 at Supreme Filters in Durban @ R750.

Got the 1R-0750 filter from CAT at R330 incl vat. (Seems like different salesmen give different prices)

Will get the hose fittings and custom bracket made sometime this week.

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Re: Polo 9n tdi fuel filter mod?

Post by panic-mechanic »

I still think that unless you are going 4x4 ing Out of the country you are wasting time and money on this. The stock filters are pretty decent on them.
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Re: Polo 9n tdi fuel filter mod?

Post by Ashveer03 »

I probably am... only 1 way to find out.

Alot of people on the tdi forums swear by the cat filter, and i noticed alot of people locally say im wasting my time.

If for some reason it doesnt work well, i can always sell the setup to a truck/equipment builder.

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Re: Polo 9n tdi fuel filter mod?

Post by panic-mechanic »

What exactly are you measuring it against. How do you know it is working as opposed to what is there now? What is the issue you are supposedly curing?
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Re: Polo 9n tdi fuel filter mod?

Post by THANAS »

Shooting for that 1m km mark.
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Re: Polo 9n tdi fuel filter mod?

Post by Ashveer03 »

Im not measuring it against anything. By "doesnt work well" i meant, if it causes any issues.. (fuel not being able to flow properly through it, as a donaldson dealer said, which i think is **** as i dont see flow being a problem.)

Well regarding to "how i know its working", it is a 2micron filter so it has to work(filter) better.

I could say im trying to (not cure) but permanently prevent fuel and air leaks from the replacement filters plastic parts.

On the other hand i could just buy the filter parts from vw, but its expensive and i will actually save quite abit by using the cat setup.

And besides that, others have done alot of testing to come to a conclusion that this specific cat filter, filters and flows way better than the oem or replacement filter. On the tdi forums, seems like every diesel vehicle is using this setup, from vw, chev, ford, dodge, etc..

The oem or replacement filter may be sufficient, but i doubt theres any harm in trying to improve their system as we all know the price of pd injectors and the quality of fuel in our wonderful country.

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Re: Polo 9n tdi fuel filter mod?

Post by Ashveer03 »

Got it fitted, the car seems to start quicker probably due to 100% air free fuel lines..

No other noticable differences that i could see at the moment. Time will tell..

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Re: Polo 9n tdi fuel filter mod?

Post by MarshallGTi »

Can you run logs to compare fuel flow rates before and after?
It is an ingenius solution to a problem that should have never existed in the 1st place...

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Re: Polo 9n tdi fuel filter mod?

Post by Ashveer03 »

I doubt u can run logs on fuel flow, havnt seen that on vcds.. if it is possible, do u know what block/group measures this?

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Re: Polo 9n tdi fuel filter mod?

Post by THANAS »

Not possible on a 1.9TDi.
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Re: Polo 9n tdi fuel filter mod?

Post by THANAS »

Also, the flow capacity of that filter or basically any fuel filter on a 1.9TDi is far greater than what the injectors require, even if you go with bigger injectors. Flow capacity when changing the filters is a non-issue, there is no metric by which you can judge the improvement (except a forensic analysis of both old and new filters after a certain mileage etc.). Which you aren't going to do, I assume.
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Re: Polo 9n tdi fuel filter mod?

Post by Kyle »

Why do you need absolute 2 micron if the OEM rate is 10?

Or do you just want the CAT filter because it looks cool :lol:
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Re: Polo 9n tdi fuel filter mod?

Post by Ashveer03 »

Kyle wrote:Why do you need absolute 2 micron if the OEM rate is 10?

Or do you just want the CAT filter because it looks cool Image
I dont need it, i wanted it. If u can have a better filter rate with more flow than oem so why not????
No harm in keeping dirt away from the engine.

It does look better than that oem piece of **** anyway, i have just modified the original bracket to accept the cat filter, so the new filter itself cant really be seen, just the head.

I did the whole "filter mod" thing because i preferred it. And i did it on 1 of my personal vehicles, and i will most likely do it on my other car aswell. Im not asking any1 else to do what i did, if people wanna use the oem filter or even a shitty inline plastic filter that has absolutely nothing to do with me.
If they want to change from the oem, then all the details are in this thread..

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Re: Polo 9n tdi fuel filter mod?

Post by Ashveer03 »

THANAS wrote:Also, the flow capacity of that filter or basically any fuel filter on a 1.9TDi is far greater than what the injectors require, even if you go with bigger injectors. Flow capacity when changing the filters is a non-issue, there is no metric by which you can judge the improvement (except a forensic analysis of both old and new filters after a certain mileage etc.). Which you aren't going to do, I assume.
My concern was the flow being less than oem due to it being a 2micron filter, but according to specs and tests from other kind people show that they actually flow more than oem.

Yeah, im not going to do any lab testing and all that, other guys have already done it. Our fuel in SA can never be better than fuel in other countries (uk, etc) anyway..

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Re: Polo 9n tdi fuel filter mod?

Post by boost'd »

pre tandem pump the 1.9tdi.s flow a measly 1bar....
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Re: Polo 9n tdi fuel filter mod?

Post by panic-mechanic »

Flow is measured in volume over time. Ie something like litres per hour.
pressure on the other hand is measured in bar....
Just saying.
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Re: Polo 9n tdi fuel filter mod?

Post by boost'd »

panic-mechanic wrote:Flow is measured in volume over time. Ie something like litres per hour.
pressure on the other hand is measured in bar....
Just saying.
100%.
but really how much more are you going to flow more at say 1bar
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