3.0l TD 2011 patrol 2nd fuel filter

[deano_thfc]

Hi all, i have just bought a 2011 GU7 Patrol, 3.0L TD. I have read somewhere that it is advisable to fit a 2nd filter to help trap any water in the fuel. A few forums are debating on the correct filter micron size. I have no idea which kit to buy and would love some insight from other Patrol drivers.
I have also been told it would be a good idea to fit a bigger exhaust 3" to help with breathing. Is this correct? and are there other mods that you guys suggest to improve fuel consumption/Power and reliability.

TIA

[threedogs]

Hi Dean and welcome to the forum can you pop over to the intros
and tell us a bit about yourself before asking questions.
No harm done but just something the forum asks of us all
As for your problem I think fitting an extra filter is no good
and I think its not a good idea for TD motors,
Heaps of things you can do,,,, get a re'map, or fit a chip
First Id buy a Scan Gauge for a CRD, egr block is also a good idea

[JoeG]

Hi Dean
I have 2 pre filters 1 for the transfer pump from the sub tank to main
the 2nd one (with inline booster pump) for Main to OEM filter
Both filters are the CAV/Ryco type
Since I did a chop and streach I have room under the tray to fit them
You would have to fit it (filter and in line pump under the bonet near the brake booster
I chnge the Main filter every 5,000km and swap it for the Sub filter and every time find a 1/2 T spoon of water and grit in both
Hve had the set up since new and now have done 60,000km
Hope this helps

[deano_thfc]

Hi Dean and welcome to the forum can you pop over to the intros
and tell us a bit about yourself before asking questions.
No harm done but just something the forum asks of us all
As for your problem I think fitting an extra filter is no good
and I think its not a good idea for TD motors,
Heaps of things you can do,,,, get a re'map, or fit a chip
First Id buy a Scan Gauge for a CRD, egr block is also a good idea

No worries sorry for that i will pop over there now and introduce my self.
A lot of people have told me the 2nd filter is a good idea, as water is a killer of CRD motors. Can you tell me why you think its not a good idea.
I have already thought about blocking the EGR , and will look at chips later when i have the coin.
Cheers

[deano_thfc]

Thanks Joe for the helpful info. Your CAV type filter do you know what Micron filter that is? Ive been told that most are 30 microns which for a CRD is to large.
Also does your pre filter have a drain on it for the water? 1/2 a spoonful of water every 5,000klms seems a lot to me, but what do i know lol.

Cheers

[threedogs]

May have been for the Di's,,, but have a search there was a bit written on it just lately

[the evil twin]

snip...
I chnge the Main filter every 5,000km and swap it for the Sub filter and every time find a 1/2 T spoon of water and grit in both
Hve had the set up since new and now have done 60,000km
Hope this helps

Strewth... I would be changing Servos that I get my fuel from.
That is seriously shitty fuel

Pre-filter... depends a bit on your fuel source IE farm drum stocks, servo, servo just after a flood.
Common useage thru Servos then no need IMHO as the CRD Filters are smaller micron anyway.
IIRC previous service interval was 40,000 K's on Fuel Filters

[deano_thfc]

Cheers evil, yeah the research i have done seems to indicate that for a pre filter to be effective it has to be about 5 microns, which can reduce flow to the motor. The myth i had heard from other Patrol users were that these water traps were a must.
Not so sure now after doing a bit of reading on it.
How about fitting a 3" exhaust? will it be any improvement in performance or would a chip be money better spent?

[deano_thfc]

Oh sorry with regards to fuel, all of my fuel will be from servos. I dont go four wheel driving so hopefully i can not get a dodgy servo along the way.

[Rock Trol]

Hi Dean. I had 5 micron pre filter on my crd but it was too restrictive. Have since taken it off and patrol runs much better. I did not have a lift pump so the engines pump was trying to suck fuel through two filters. From my experience you would need a lift pump as well as extra filter. Problem is that there isn't a lot of room under the bonnet.

The standard fuel filter has a water trap and water watch system inbuilt. If the filter light comes on, stop car and drain filter. People with crd patrols in my club have toured all over Australia without fuel problems. Just be careful which servos you fuel up from and cross your fingers. 😄

[the evil twin]

What R.T. said x 2 ^^^^

...and don't get me wrong, I'm not saying you can implicitly trust Servos BUT you can have a crack at them if you get bad fuel.
A CRD (of any make) with a gutful of bad fuel will usually shit itself within minutes of the source.
After the Carnarvon Floods over here most of the expired vehicles who had filled up at the local Servo didn't get further than 10 K's

If you go with a 'traditional' size pre-filter of 11 or up to 30 micron all that does is intercept the larger crap before the primary filter.
If you go with smaller micron filters around the same size as the primary filter all that does is make the fuel pump try and suck a tennis ball thru a straw.
If you go with mutiple filters and add lift pumps to shove the tennis ball thru the straw then it becomes a 'why bother unless you get something out if it' like savings on replacing filters less often or whatever.

[BigRAWesty]

Father inlaw has just fitted a kit with an 11 micron filter and water trap...
What I don't get is stock is usually 5 micron and already has an alarmed water trap..
So my plan is to change out fuel filter every 10,000k..
Simply by adding a second filter, even 30 micron your pump has to work harder..
And it's only taking out large bits.. all the small stuff still gets threw. .
Anyway..
I'm not bothering.. I'm just going to replace more often..

[Rock Trol]

I change my filter once a year which is around 10-15000 km or so. Also avoid bio diesel, or so I've heard.

The advantage of having a pre filter would be to change it more often as they are a lot cheaper than the Nissan one. $40 vs 140 is a big difference. Unfortunately my truck was sapped of power as soon as the 5 micron filter went on.

[deano_thfc]

Hi Dean. I had 5 micron pre filter on my crd but it was too restrictive. Have since taken it off and patrol runs much better. I did not have a lift pump so the engines pump was trying to suck fuel through two filters. From my experience you would need a lift pump as well as extra filter. Problem is that there isn't a lot of room under the bonnet.

The standard fuel filter has a water trap and water watch system inbuilt. If the filter light comes on, stop car and drain filter. People with crd patrols in my club have toured all over Australia without fuel problems. Just be careful which servos you fuel up from and cross your fingers. 😄

Thanks for that Rock, it seems that another filter seems to be more hassle than it's worth. I might save my money and spend it on a chip and exhaust. Cheers for the info.

[deano_thfc]

Thanks Westy yep I'm decided on not bothering, I think if it needed two filters that Nissan would have fitted two. I'm glad I came on here, saved me some coin and the headaches.

[deano_thfc]

You make a great point evil, seems pointless doesn't it. I will bin that idea and go for a bigger exhaust. Once again opinions are divided on the size, 2.75" or 3"? Back pressure being the deciding factor it seems. Hopefully you guys that have a bigger exhaust can help me decide. Also is it worth it if I have not got a chip?

[deano_thfc]

Thanks heaps everyone, been very helpful and saved me some coin and hassle. Will bin the idea and look into exhausts and chips. Any feedback here is also most welcome.

[Rock Trol]

2.75 vs 3 inch exhaust. I think very few people would have tried both on the same car/model so all opinions are subjective. I have the 3 inch and it works well, but it started to over boost so I had to put on a daws valve.

Do do the exhaust first and see how you go. You might not need a chip.
Also think about a remap. I have one and the car really runs well. I did remap and exhaust at same time so it's hard to tell how much each is doing.

[BigRAWesty]

A few of the top exhaust manufacturers are now running a 3" dump and 2.75 pipe..
My plan is a 3" complete system but I'll be running a muffler..

[deano_thfc]

Yeah good point about the exhaust, doubt if anyone would put. 3" on then change for a 2.75 or vica versa. The remap might be the go with the exhaust as you suggest, did the exhaust shop do that? Any brand of exhaust to steer clear of?

[deano_thfc]

Thanks Westy yeah I heard that to. I'm Defo going to be running a muffler, the missus would whinge to much about the noise otherwise :)

[the evil twin]

Pffft... turf the Muffler idea.

3 inch with a hi-flow Cat and no muffler is plenty quiet enough around town and meaty enough at full noise when the hammer is down

[BigRAWesty]

Pffft... turf the Muffler idea.

3 inch with a hi-flow Cat and no muffler is plenty quiet enough around town and meaty enough at full noise when the hammer is down
My wife only has 2 speeds..
Full noise or no noise..
I guess it's much easier to add a muffler than to take one out..