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  #145  
Old 12-02-2012, 04:31 PM
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Re: Anyone tuned a CRD yet?

I did a bit of thinking regarding a catch can and the associated horror stories of carbon caked inlet manifolds, valves and chambers due to the oil recirculation system. There is plenty of evidence that carbon can build up - but I've come to believe this can be exacerbated by use of poor quality engine oil.
I've owned 4 previous diesel vehicles - all with exhaust gas recirculation; worked them fairly hard, clocked up many hundreds of thousands of km and never had an issue that appeared to be related to gunk in the intake system. Maybe I was lucky....
Having had to fork out the cash for the stuff, most of us owners know a high quality synthetic low ash oil is specified for the VM diesel (as well as all other Euro 4 or 5 compliant diesel engines). One of the major reasons for this is to ensure that deposits aren't left as PCV vapour contacts the hot surfaces.
I don't know of any manufacturer that fits a catch can from the factory.
Check around the VW forums particularly relating to oil choices and specifications and you will find plenty of information.
I've just had reason to question Shell Australia regarding a change in formulation of their only oil that complied with Chrysler MS11106 (their Ultra Extra 5W-30 now doesn't comply).
From what I can find out, the Chrysler spec particularly relates to achieving the requirements of an oil ash residue test on a heated surface, and as I see it this relates directly to why they don't consider a catch can to be a necessary inclusion. If the heated low ash oil doesn't leave a residue then there shouldn't be an issue.

For our vehicle, I'm just going to stick with an oil selection that fully complies.
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  #146  
Old 12-02-2012, 05:21 PM
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Re: Anyone tuned a CRD yet?

John the problem is LOW ash does not mean NO ash. You can buy the most expensive oil but if you cook it it will leave deposits.

The manufacturers don't fit Oil Catch Cans because they try to save $$$. And if they can get a system that fails AFTER warranty then they are OK and past the post, and has given them 2 benefits Saved money and parts income.

If the problem ends up in the owner's lap well that is just dandy in their opinion and generates more income for the parts department and more revenue for the manufacturer. It is all $$$ related ... even down to the lowest possible head light wattage they can use (which is why we get stuck with 45w / 55w head lamps in our bloody expensive vehicles )

50 cents here, $3 there, $10 and $80 elsewhere. If the bottom line savings is $3210.19 ... u bet they are going to do it And we cannot SOLELY blame capitalism ... look at the humble Trebant ...it was made from recycled compressed cotton

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  #147  
Old 12-02-2012, 06:04 PM
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Re: Anyone tuned a CRD yet?

here are the promised pics within this new thread

CLICK HERE
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  #148  
Old 12-03-2012, 01:42 AM
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Re: Anyone tuned a CRD yet?

Quote:
Originally Posted by John47 View Post
I did a bit of thinking regarding a catch can and the associated horror stories of carbon caked inlet manifolds, valves and chambers due to the oil recirculation system. There is plenty of evidence that carbon can build up - but I've come to believe this can be exacerbated by use of poor quality engine oil.
I've owned 4 previous diesel vehicles - all with exhaust gas recirculation; worked them fairly hard, clocked up many hundreds of thousands of km and never had an issue that appeared to be related to gunk in the intake system. Maybe I was lucky....
Having had to fork out the cash for the stuff, most of us owners know a high quality synthetic low ash oil is specified for the VM diesel (as well as all other Euro 4 or 5 compliant diesel engines). One of the major reasons for this is to ensure that deposits aren't left as PCV vapour contacts the hot surfaces.
I don't know of any manufacturer that fits a catch can from the factory.
Check around the VW forums particularly relating to oil choices and specifications and you will find plenty of information.
I've just had reason to question Shell Australia regarding a change in formulation of their only oil that complied with Chrysler MS11106 (their Ultra Extra 5W-30 now doesn't comply).
From what I can find out, the Chrysler spec particularly relates to achieving the requirements of an oil ash residue test on a heated surface, and as I see it this relates directly to why they don't consider a catch can to be a necessary inclusion. If the heated low ash oil doesn't leave a residue then there shouldn't be an issue.

For our vehicle, I'm just going to stick with an oil selection that fully complies.
That sounds perfectly reasonable. It is similar to the 2-stroke situation. I well remember the onerous task of de-coking 2-stroke engines prior to the invention of low ash oils. In those days it was a job that just had to be done.
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  #149  
Old 12-03-2012, 02:12 AM
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Re: Anyone tuned a CRD yet?

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Originally Posted by yoda42 View Post
I only mentioned these two because they are Aussie and they have Aussie warranty, some peace of mind if something goes wrong
Enforcer, as you know all our prices are a rip off in OZ

They are not Aussie Yoda

there is only one chip company that bother to be home grown
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  #150  
Old 12-03-2012, 02:46 AM
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Quote:
Originally Posted by Chip Tuning View Post
They are not Aussie Yoda

there is only one chip company that bother to be home grown
They both have Aussie seller/agents which gives you an Aussie warranty (not bought on line from uk etc and there for no warranty in OZ).
They also both claim to tune for Aussie conditions, that gives some peace of mind.
As an ex-machanic I am willing to look at the info any chip manufacture makes available and I will make an informed decision when I put a chip on my crd wk2 in the future
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  #151  
Old 12-03-2012, 03:47 AM
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Re: Anyone tuned a CRD yet?

Yes they have Aussie presents, that's true. PM Sent
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  #152  
Old 12-03-2012, 06:44 PM
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Re: Anyone tuned a CRD yet?

You know we talk about chipping/tuning the engine but I honestly think, and I think a lot would agree, is that there would be a more noticeable benefit if we were able to somehow re-map the shift points for the transmission.

It's electronically controlled, so if it could be made to respond just a little sooner to throttle inputs then that would be awesome.

Just as a side note, I read a review of the 8 speed pentastar Chrysler 300 (drive.com.au) and one of the criticisms was that the transmission was slow to kick down. It would be pretty disappointing if that is true, as it is the same criticism we have of the 5 speed.
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  #153  
Old 12-03-2012, 07:24 PM
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Re: Anyone tuned a CRD yet?

Quote:
Originally Posted by savvas View Post
You know we talk about chipping/tuning the engine but I honestly think, and I think a lot would agree, is that there would be a more noticeable benefit if we were able to somehow re-map the shift points for the transmission.

It's electronically controlled, so if it could be made to respond just a little sooner to throttle inputs then that would be awesome.

Just as a side note, I read a review of the 8 speed pentastar Chrysler 300 (drive.com.au) and one of the criticisms was that the transmission was slow to kick down. It would be pretty disappointing if that is true, as it is the same criticism we have of the 5 speed.
Slighlty off subject,but putting into SPORT seems to make the kick down notably more responsive.
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  #154  
Old 12-03-2012, 09:38 PM
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Re: Anyone tuned a CRD yet?

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Originally Posted by GlennR View Post
Slighlty off subject,but putting into SPORT seems to make the kick down notably more responsive.
Yep. I think that's real, but I often think it's just a perception. I'm not really sure.

How's that for being definitively undecided?
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  #155  
Old 12-03-2012, 10:41 PM
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Re: Anyone tuned a CRD yet?

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Originally Posted by savvas View Post
Yep. I think that's real, but I often think it's just a perception. I'm not really sure.

How's that for being definitively undecided?
....cant make my mind up on that one
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  #156  
Old 12-04-2012, 02:38 AM
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Re: Anyone tuned a CRD yet?

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Originally Posted by savvas View Post
Yep. I think that's real, but I often think it's just a perception. I'm not really sure.

How's that for being definitively undecided?
In Sport mode there is certainly a huge handling improvement but I too couldn't detect much going on as regards shift point. Perhaps the box needs some time to re-learn. I really don't understand this learning thing but that's off topic.
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