Small sports Turbo cooling hoses.

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Corky
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Small sports Turbo cooling hoses.

Post by Corky » Mon May 28, 2012 8:35 pm

This is a spin off from my project thread HERE.

Due to a leak on the turbo cooling pipes and what IMHO was quite a poor original design (and made fitting the turbo twice as difficult as it should be) I decided to fit some flexible cooling hoses. I couldn't find a kit for the S12 (CA18ET) engine with T2 turbo, so I took a gamble on set for the S13 (CA18DET) on eBay http://www.ebay.co.uk/itm/Turbo-Oil-Wat ... 0876610574 (seller was kinugawa_turbo ).

If you're planning on doing this, you need to remove the turbo from the car and buy all the relevant gaskets (two exhaust manifold, one turbo to manifold, and one turbo to elbow)

Turbo to elbow (ebay http://www.ebay.co.uk/itm/RENAULT-5-GT- ... 0109242938 )
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Turbo to manifold (ebay http://www.ebay.co.uk/itm/GARRETT-T2-TU ... 0515984386 )
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Exhaust (Nissan dealers part no. 14036-02E00 )
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This is what arrived from Mr. Kinugawa:-

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The only bits you actually need are the two large hoses, two of the banjo fittings and four copper washers.

This is how they bolt onto the turbo :-

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Obviously they need to connect up at the other end too....

You can see the original solid pipes here :

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I cut these off just to the right of the exhaust port, and fitted the flexis to them using a variety of adaptors to get from AN4 (7/16) JIC to 8mm compression.

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Adaptors shown here:-

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I can't remember what all the sizes were, but I'm sure an engineering shop would be able to work it out from the photos.

If I was doing it again. I'd probably have some longer flexis made up and eliminate the original solid pipes completely. I think fitting these end pieces straight into the rubber hoses (near the inlet manifold) would be neater.

Image
Last edited by Corky on Mon May 28, 2012 9:15 pm, edited 1 time in total.


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Re: Turbo cooling hoses.

Post by Corky » Mon May 28, 2012 9:10 pm

And when fitted.

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Steve
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Re: Turbo cooling hoses.

Post by Coco La Blanc » Mon May 28, 2012 11:19 pm

Steve,
Always easier to follow than to trailblaze ! Those damn twin pipes definitely restrict spanner movement/access and fully agree that to replace the pipes completely with longer SS flexibles appears to be the best solution however is there any chance that these will fail under the intense heat generated by the turbo ? Is there anybody (eg. Turbo Gurus) able to give any historical/relevant comments as to the longevity/viability of the flexibles used in this position ?
Regards,
Viv



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Re: Turbo cooling hoses.

Post by scimjim » Tue May 29, 2012 6:51 am

The water in those pipes doesn't get too hot (they're connected into the normal cooling system).

I previously had simple flexible rubber water pipes on that car without problems, routed around the front of the engine to avoid scorching from the exhaust manifold (braided hose are protected more externally)


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Re: Turbo cooling hoses.

Post by Corky » Tue May 29, 2012 8:25 am

As these particular hoses are made for use with a turbo (a bigger one in fact) and they contain cooling water, and are slightly further away than the originals, I'm not too worried about heat damage.

If you're having some made up, then I suppose you'd need to choose the hose type carefully, unless of course you go with Jim's idea and route them round the front of the engine.

I'll measure up my spare banjo couplings and post the sizes here, just in case anyone decides to make their own hoses up.


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Re: Turbo cooling hoses.

Post by reliant-reviver » Tue May 29, 2012 9:04 am

Dare I say it....... I could look at having a bat.....

Nah, I'll wait till I'm off holiday(s) before admitting that :-p


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Re: Turbo cooling hoses.

Post by geoffp67 » Tue May 29, 2012 9:15 am

the oil cooler hose has a ptfe core to withstand the heat, so thats probably the best way to go
routing around the front sounds like a great idea, only gets in the way at cam-belt change time, no big deal, tidier around the back though



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Re: Turbo cooling hoses.

Post by Corky » Tue May 29, 2012 9:27 am

Another thought I had was to re-use the original banjos by cutting them off with about an inch of straight pipe left. You could then get a hose with 8mm compression fittings at either end and just replace the centre section of the solid pipes. Although this would be an economy job, it'd still make fitting the turbo an awful lot easier, and it would eliminate the risk of fracturing the pipes on stripdown and refit. I would imagine that you could buy these off the shelf from a plumbing supplier for pennies.

And another way would be to cut off the banjos as I mentioned, then just push over some 8mm braided hose, hold in place with a clip, and fit the other end straight onto the pipework around the inlet manifold (secured again with a hose clip). Possibly the cheapest way of the lot.......

At the end of the day, it depends what your budget is, and how much faith you'd put in your chosen solution. I'm happy with the method I used, all the bits are available off the shelf and it works :D


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Re: Turbo cooling hoses.

Post by Coupe Racing » Wed May 30, 2012 8:35 am

If anyone is really worried about heat - you could get some of that silver correguated tube that is fitted to air con pipes to help reflect heat away.


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Re: Turbo cooling hoses.

Post by Poppy » Wed May 30, 2012 12:17 pm

Have a look at the 'Agriemach' web site. (www.agriemach.com) They do a wide range of heat insulating products.
Tony



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Re: Turbo cooling hoses.

Post by Corky » Sat Aug 11, 2012 1:36 pm

Mods, do you think it's worth making this a sticky as the subject keeps coming up ?


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Re: Turbo cooling hoses.

Post by Roger Pennington » Sat Aug 11, 2012 1:41 pm

Done :)


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Re: Turbo cooling hoses.

Post by Corky » Fri May 10, 2013 2:06 pm

Kinugawa are now selling a cheaper kit with just the cooling hoses. See here http://www.ebay.co.uk/itm/111035388844


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