TDi Fuel Cooler

[Lofty86]

Im just about to do this to my furby, and found this thread, so thought id post it up...

SEATCupra.net - Your #1 source for SEAT information - The Diesel Fuel Cooler Guide

If you are doing this, the pictures showing you where to split the pipe are slightly wrong. You will need to place your cooler in between the top fuel line on your engine and the centre take-off on the filter (round thing in the right of your engine bay).

HTH some people who like power, and I will post up my pictures after I'm done.

Dave

Edited 1 March, 2009 by DGW
Minor typos

[Lofty86]

Also, where it says 'You are here....Home , Info Base , Fitting Guides , '.

Click on the 'Fitting guide bit for more great links'.

Dave

[devonutopia]

I have the components in a box ready to be fitted this saturday all being well.

[ultra_joel88]

what sort of power gains would you see?

[devonutopia]

marginal. But having cool fuel will always be good in the long run, and for "consistent" performance - Much in the same way an FMIC works I guess.

[ultra_joel88]

what do they retail at?

[Lofty86]

I got a 19 row cooler for £25 delivered, and a load of braded hose for next to nothing.

i reckon about 1.5/2hp on a hot day, for around £45 (mine is going in the arch, where the intercooler is, but it will cool better with the FMIC fitted and SMIC out the way).

HTH, Dave

[devonutopia]

Mocal tends to be a bit more. I paid a shade under £70 for the mocal 10 row cooler, 2 fittings, and delivery.

[OctaviaBuzz]

I got a 19 row cooler for £25 delivered, and a load of braded hose for next to nothing. Dave

Where was that from, may i ask?

I have a 1.9TDi Pasat105 remapped to 145bhp (no other mods at all but would consider doing this mod at the right price for consistent summer performance)

>

[jamjar]

There is already one fitted underneath the car, i assume this is in addition?

[devonutopia]

There is one under the car yes, but it's not that efficient.

Mine is now fitted, bolted to the underside of the slam panel and well vented via the grille. Also gives me some more "engine bay bling"

It was quite good as when leak testing you could feel it warming up a lot, even just on tickover. Hopefully it will do a good job for the future.

No pics yet. First people to see will be at TRAX tomorrow.

[Lofty86]

You may ask...

eBay Seller: trashspeedcameras: Cars, Parts Vehicles items on eBay.co.uk

The link above is the seller (on ebay), but he hasnt got any at the mo.

Just look on ebay tho.

My 19 row one is about 150mm x 250mm. so quite big.

HTH. Dave

[jasc1988]

Make up a how to guide when you do as i'll likely do this

[Lofty86]

My only thought (which will probably get answered in a mo) is, does the fuel system need priming/bleeding.

I dont think it does as the tank pump will prime the system... right?

Dave

[Lofty86]

O, and i forgot to say. Im using braided hose to A) Keep heat out, and so it doesnt rub through on anything.

Will be replacing all fuel lines in the engine bay probably.

[VWD]

There is one under the car yes, but it's not that efficient.

So If I get this right -the cooler under the driver side (almost under driver seat ) is a fuel cooler - not an oil cooler ?

[big_dave]

How much cooler are you making the diesel? I was told diesels optimum temperature was between 62-68 oC.

[VWD]

So If I get this right -the cooler under the driver side (almost under driver seat ) is a fuel cooler - not an oil cooler ?

Once more back to Haynes - solly for ignorance - see that oil cooler is part of oil filter on TDI- and yes the fuel cooler is under the car .

[ns_sullivan]

There is one under the car yes, but it's not that efficient.

If it is not that efficient in that location is it possible to just move it to the front of the car or is it just easier to buy a new one and start from there. 2 coolers are better than one sort of thing...

the one under the car is quite a side and would have thought if possible to be moved to vertically mounted it would be a large item for cooling...

[cheezemonkhai]

So If I get this right -the cooler under the driver side (almost under driver seat ) is a fuel cooler - not an oil cooler ?

The one under the car is cooling the fuel going back into the fuel tank.

This keeps the temperatures down and is partly requires as the car has a plastic fuel tank. Add to that you don't really want roasting hot fuel in the tank.

I'd say don't bother myself as nearly all the time during the year you're not going to benefit from it on a derv.

If you want to throw some money away I'd get the EGR, intercooler and associated pipework all cleaned out, a clean air filter and an oil change.

This will probably have more of an effect than a fuel cooler.

[devonutopia]

I probably should put up pics of my install of the seatcupra.net fuel cooler mod.

This is it fitted to the underside of the slam panel area. It sits nicely in there, at least when you have no aircon....

This is the "bigger picture" taken on a dyno day shortly after. You can see it in there sneaking out.

[skodadan]

Thought the idea of a fuel cooler was like cheezemonkhai said. cools the fuel returning to the tank so you dont get warm fuel in your tank causing condensation.? Maybee wrong.

[devonutopia]

might have that side effect, but primarily cool fuel = more power. (a bit)

[WW_VRS]

Gonna raise this guide from the 'dead' a little -

Jason, did you fit this in the return line?

[Tech1e]

Thought the idea of a fuel cooler was like cheezemonkhai said. cools the fuel returning to the tank so you dont get warm fuel in your tank causing condensation.? Maybee wrong.

Its so the hot fuel doesnt melt the plastic tank.