Yet another oil cooler question (well a few actually)

[Audi Pardner]

Well they've come back with about 33% goodwill, which would make it cheaper (and easier) to just get it fitted and live with the fact that it's probably going to be need to be done again a few years down the track.

Seems crazy that Audi haven't come up with an updated part for this made out of something that's not going to corrode

Not really; they know that it's a part that a customer will need every 5-6 years in all likelihood, so a nice little earner at about £1400 every time!

[R1RS4]

Hi there All,

I have sent an email earlier today to JHM asking if we could get some discount on a group buy if say 20 members purchased

They have replied and said they have received the email and have passed it to their RS department and will respond accordingly

I know that some members have urgent needs and this may well not suit but it's certainly an issue that's not going to go away

I think my way forward is to fit JHM and keeping OEM cooler set up

What do you think?

[adsgreen]

Whilst the jhm is a great looking piece of kit, it is still steel.
If you fit it in the same way as stock without firing any corrosion preventative protection it will suffer problems eventually (unless there is something missing I can't see from the product pages)
Although you won't have any problems with the crimp unions as you do on the stock pipes.

[Audi Pardner]

Whilst the jhm is a great looking piece of kit, it is still steel.
If you fit it in the same way as stock without firing any corrosion preventative protection it will suffer problems eventually (unless there is something missing I can't see from the product pages)
Although you won't have any problems with the crimp unions as you do on the stock pipes.

I think you're right there. I'm fitting some JHM pipes and will be using some sort of corrosion prevention, maybe the Loctite stuff you suggested, then wrapping the connectors in Denso tape. The steel crimps are the real weakness in the Audi pipes.

I'll post some pics up at the weekend.

[adsgreen]

Looking through the stats, even good 'ole reliable Loctite blue indicates it prevents galvanic corrosion by sealing the gaps in the thread and has excellent resistance to oil.
I've used it on lots of various oil sealing areas without any failures and is safe for use in that kind of application.
Does mean you don't need to be so "rigorous" in making sure the denso tap is applied perfectly as it's a bugger

[R1RS4]

I know the JHM sump fittings are stainless, I have asked if the kit can be supplied all stainless as this would resolve all the corrosion issues and concerns, yes it would bump the price but once changed it would last the working life of the car, will let you know the reply

[rocket1]

Or if they would mark the value of the parcel lower so that would reduce the amount of import duty. I bought a yoshimura exhaust for my bike from the us and even though it cost about£500 they marked at a lower value and only paid £26 import on it! I can wait a few weeks if this came off!!

[R1RS4]

Whilst the jhm is a great looking piece of kit, it is still steel.
If you fit it in the same way as stock without firing any corrosion preventative protection it will suffer problems eventually (unless there is something missing I can't see from the product pages)
Although you won't have any problems with the crimp unions as you do on the stock pipes.

Hi mate,

Had confirmation last night that the JHM's are not steel, they are stainless steel adaptors and Anodized Aluminum hose ends ie no corrosion

[Covkiller]

When I ordered my Gruppe M induction kit GM detailed, "no cost, for demonstration purposes only", and on a £1k+ bit of kit I was asked for no duty to pay when I picked it up from the Royal Mail sorting office.

[R1RS4]

Or if they would mark the value of the parcel lower so that would reduce the amount of import duty. I bought a yoshimura exhaust for my bike from the us and even though it cost about£500 they marked at a lower value and only paid £26 import on it! I can wait a few weeks if this came off!!

They seem pretty much on the ball so I think they will let us know asap

I like the idea of the mark down. anything that reduces the cost

I have done this over the years, and shipped bike bits in the base of machines that our company purchased, a white tipped kerker exhaust for my vmax saved hundreds

[R1RS4]

When I ordered my Gruppe M induction kit GM detailed, "no cost, for demonstration purposes only", and on a £1k+ bit of kit I was asked for no duty to pay when I picked it up from the Royal Mail sorting office.

Cool http://forum.rs246.com/posting.php?mode ... 5&p=647920#

[adsgreen]

Whilst the jhm is a great looking piece of kit, it is still steel.
If you fit it in the same way as stock without firing any corrosion preventative protection it will suffer problems eventually (unless there is something missing I can't see from the product pages)
Although you won't have any problems with the crimp unions as you do on the stock pipes.

Hi mate,

Had confirmation last night that the JHM's are not steel, they are stainless steel adaptors and Anodized Aluminum hose ends ie no corrosion

That does sound much better - they need to push that fact on the product page!

Just to answer a few points above:
- stainless steel only protects the steel from rusting. Stainless steel + aluminium + water = still galvonic corrosion.
However I think stainless steel is closer to aluminium so the reaction will be less aggressive.

- as with stainless steel, anodising aluminium is for similar reasons. To prevent the aluminium oxidising (although it does also help with galvonic corrosion as the layer is non conductive)
If you had an anodised aluminium connector connected to a steel fitting then it'll still corrode. The problem is that the anodised layer is quite fragile and is unlikely to survive intact being screwed onto a steel fitting.

The only ways really to stop it is to one of:
- prevent water getting in
- cover the metal and prevent it touching water
- use a sacrificial metal (as the corrosion always goes for the less noble metal)

[rocket1]

quote from r1rs4! have done this over the years, and shipped bike bits in the base of machines that our company purchased, a white tipped kerker exhaust for my vmax saved hundreds

haha the widow maker! that must have been damn loud with a kerker lol

[rocket1]

think i caught mine just in time. the shorter hose is like new so must have been replaced more recently. rain stopped play now but hoping to get hoses off cooler tommorow as cooler looks solid!!

[PritJutla]

- as with stainless steel, anodising aluminium is for similar reasons. To prevent the aluminium oxidising (although it does also help with galvonic corrosion as the layer is non conductive)
If you had an anodised aluminium connector connected to a steel fitting then it'll still corrode. The problem is that the anodised layer is quite fragile and is unlikely to survive intact being screwed onto a steel fitting.

What about an all aluminium connector for the sump?
Been looking at the JHM kit images, it shouldn't be difficult to manufacture some aluminium connectors and have them anodised black (or any other colour for that matter)

Has anybody got any sump connectors lying about that could be used to design/engineer a new connector?

The -12 fittings can be sourced pretty much anywhere, I could ask my customer for help making up some lines with the required fittings (they do this for a living)

I could machine the connectors - give me a nice little project to work on.

Prit