And it was all going so well....

4.2 V8 32v Naturally Aspirated - 414 bhp
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MikeFish
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Re: And it was all going so well....

Post by MikeFish » Tue Sep 01, 2015 8:08 pm

mikep99 wrote:For info..

Aberdeen Audi are advertising the oil cooler for £650 & the pipes for £270 on their ebay shop, so £920 all in...

And like what has been said, there's nothing to say that the OEM pipes wont split again in the next few years so the same issue will reoccur...

Oh, and yep, I've been more than happy with Glen's/Revolution's service today!

Mike
Ah ok, I thought it went up a bit last time I looked.

mikep99
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Re: And it was all going so well....

Post by mikep99 » Tue Sep 01, 2015 8:16 pm

yeah, a bit steep really for what appears to be inferior kit...

oh - and thanks for the info. regarding the fitting... I'll make sure I have everything required....

Mike

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neilparf
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Re: And it was all going so well....

Post by neilparf » Tue Sep 01, 2015 8:43 pm

MikeFish wrote:The JHM pipes are made better than OEM so won't suffer from the same issue but if you do habe to remove them later you may find they have fixed to the cooler as they are still made from dissimilar metals.
So, the Forge kit has a set of anodised aluminium 12-AN fittings mating to a aluminium Setrab cooler.

The JHM lines are anodised aluminium 12-AN fittings mating to an aluminium OEM (Setrab) cooler.

Is the OEM Setrab cooler fittings steel then and the Forge not?

OEM cooler at £627.84, JHM lines at £323.00 and import duty/VAT at £81.00 is indeed £1,031.00. Vs Forge at £880.00 is £151 saving. That's a chunk of money...
Last edited by neilparf on Tue Sep 01, 2015 8:56 pm, edited 1 time in total.
Gone but never forgotten:
2007 RS4 B7 Saloon, Metallic Silver with SS+.
LED's all round and Dectane LED tailights. KDS detail and paint. Lepsons black chrome, heavy on the silver wheels. JCWeldFab full system - valved and no pre-cats. MRC stage 2, de-flap and full carbon clean - 438PS and 489NM. HEL brake lines. H&R Spacers. Gtechniq C1 and EXO V2 coatings. 2010+ RNS-E. On the MRC dyno: http://youtu.be/y_k0VJ2--y8

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MikeFish
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Re: And it was all going so well....

Post by MikeFish » Tue Sep 01, 2015 9:04 pm

neilparf wrote:
MikeFish wrote:The JHM pipes are made better than OEM so won't suffer from the same issue but if you do habe to remove them later you may find they have fixed to the cooler as they are still made from dissimilar metals.
So, the Forge kit has a set of anodised aluminium 12-AN fittings mating to a aluminium Setrab cooler.

The JHM lines are anodised aluminium 12-AN fittings mating to an aluminium OEM (Setrab) cooler.

Is the OEM Setrab cooler fittings steel then and the Forge not?

OEM cooler at £627.84, JHM lines at £323.00 and import duty/VAT at £81.00 is indeed £1,031.00. Vs Forge at £880.00 is £151 saving. That's a chunk of money...
JHM connectors are steel.

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neilparf
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Re: And it was all going so well....

Post by neilparf » Tue Sep 01, 2015 9:08 pm

MikeFish wrote:JHM connectors are steel.
That'll do it in time no mater how much Duralac you use...
Gone but never forgotten:
2007 RS4 B7 Saloon, Metallic Silver with SS+.
LED's all round and Dectane LED tailights. KDS detail and paint. Lepsons black chrome, heavy on the silver wheels. JCWeldFab full system - valved and no pre-cats. MRC stage 2, de-flap and full carbon clean - 438PS and 489NM. HEL brake lines. H&R Spacers. Gtechniq C1 and EXO V2 coatings. 2010+ RNS-E. On the MRC dyno: http://youtu.be/y_k0VJ2--y8

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MikeFish
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Re: And it was all going so well....

Post by MikeFish » Tue Sep 01, 2015 9:14 pm

neilparf wrote:
MikeFish wrote:JHM connectors are steel.
That'll do it in time no mater how much Duralac you use...
However, the JHM kit uses steel connectors (they are actually 12AN adapters) at the oil pan end and also at the oil cooler end. They don't state what the 12AN connections on the actual hoses are made of though. So it is possible that if you needed to replace the cooler you might be able to get away with just a new cooler and a set of 4 JHM 12AN conversion adapters and retain the JHM hoses so not a total loss but too much of a pain for me especially given the added cost and import time in the first instance.

Edit: apologies, it does state the hose connections are also stainless.

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neilparf
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Re: And it was all going so well....

Post by neilparf » Tue Sep 01, 2015 9:29 pm

MikeFish wrote:
neilparf wrote:
MikeFish wrote:JHM connectors are steel.
That'll do it in time no mater how much Duralac you use...
However, the JHM kit uses steel connectors (they are actually 12AN adapters) at the oil pan end and also at the oil cooler end. They don't state what the 12AN connections on the actual hoses are made of though. So it is possible that if you needed to replace the cooler you might be able to get away with just a new cooler and a set of 4 JHM 12AN conversion adapters and retain the JHM hoses so not a total loss but too much of a pain for me especially given the added cost and import time in the first instance.

Edit: apologies, it does state the hose connections are also stainless.
It's galvanic corrosion that is the issue. The cooler is aluminium, the oil hoses are steel so add water then the ali material will always corrode due to it being the anode in the electrical reaction. This isn't a reflection on the oil cooler quality but more the quality of the original fitting. The key is to simply prevent water getting between the dissimilar metals so stopping the reaction. Can do it internally with thread sealer like Duralac and externally with say a waterproof cover over the joint like several layers of heat shrink wrap.

No electrolyte (water) = no galvanic corrosion.

So essentially all connectors in the Forge kit are Aluminium to Aluminium?

I recall sar doing the JHM line fit to an OEM cooler when he did his JHM charger thread: viewtopic.php?f=35&t=110477&hilit=sar&start=195#p698137

Those 12AN fittings at the pan are steel. Steel to steel worries. Fittings at the cooler are anodised but...

If you can salvage the OEM cooler then it's only lines needed and cost a less painful. With Duralac and external water shielding should give plenty of life. Can't beat aluminium to aluminium however, take the steps above and I think the JHM will give years of service...

Mike, do you notice and temp changes with the cooler in front of the rad?
Gone but never forgotten:
2007 RS4 B7 Saloon, Metallic Silver with SS+.
LED's all round and Dectane LED tailights. KDS detail and paint. Lepsons black chrome, heavy on the silver wheels. JCWeldFab full system - valved and no pre-cats. MRC stage 2, de-flap and full carbon clean - 438PS and 489NM. HEL brake lines. H&R Spacers. Gtechniq C1 and EXO V2 coatings. 2010+ RNS-E. On the MRC dyno: http://youtu.be/y_k0VJ2--y8

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MikeFish
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Re: And it was all going so well....

Post by MikeFish » Tue Sep 01, 2015 10:55 pm

Agreed if you takes steps to prevent the corrosion you may get many more years out of it but its quite hard I think to completely stop the corosssion altogether.

Can't say there is any noticeable change in temps with the new cooler. The only difference I've noticed is that if I jet wash it after driving it, it looks like it is overheating with the steam coming off the oil cooler.

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neilparf
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Re: And it was all going so well....

Post by neilparf » Tue Sep 01, 2015 11:06 pm

MikeFish wrote:Agreed if you takes steps to prevent the corrosion you may get many more years out of it but its quite hard I think to completely stop the corosssion altogether.

Can't say there is any noticeable change in temps with the new cooler. The only difference I've noticed is that if I jet wash it after driving it, it looks like it is overheating with the steam coming off the oil cooler.
Yeah, it'll always nagg that those connectors are of differing nobility so the corrosion will always be waiting, maybe...

Steam from the cooler! Cool!
Gone but never forgotten:
2007 RS4 B7 Saloon, Metallic Silver with SS+.
LED's all round and Dectane LED tailights. KDS detail and paint. Lepsons black chrome, heavy on the silver wheels. JCWeldFab full system - valved and no pre-cats. MRC stage 2, de-flap and full carbon clean - 438PS and 489NM. HEL brake lines. H&R Spacers. Gtechniq C1 and EXO V2 coatings. 2010+ RNS-E. On the MRC dyno: http://youtu.be/y_k0VJ2--y8

mikep99
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Re: And it was all going so well....

Post by mikep99 » Wed Sep 02, 2015 12:11 pm

Well, the kit has arrived.. 24hrs from order to delivery so double chuffed!!
Just going through the fitting instructions... Is it wrong to be excited about getting this on the car??

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geordie jay
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Re: And it was all going so well....

Post by geordie jay » Wed Sep 02, 2015 12:40 pm

No it isnt....but dont start knocking one out thats taking it to the extreme :biggrin3:

mikep99
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Re: And it was all going so well....

Post by mikep99 » Wed Sep 02, 2015 1:21 pm

geordie jay wrote:No it isnt....but dont start knocking one out thats taking it to the extreme :biggrin3:
haha!! I'm not THAT excited!!

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