Split Rad

[TonyN]

No room, had to go inside the rad. Still handled 200hp in one end of the gearbox, and turning 35" tyres other end just fine.

, but yeah, its more sensible that way.

The standard cooler in the bottom of the rad setup is good enough for most normal cars, only two or three loops of pipe, and its only cooled by the water in the rad, which will stay the same temp regardless of how hard the gearbox is working. Any multi row finned cooler in air is gonna be better than that in my opinion.

If anything, more danger of the gearbox running colder than design temps.

But hey......

[Vagrant No2]

Would need a thermostat bypass on the auto oil cooler to stop overcooling , cost goes up again .Not want Geoff wants .But we could spend alot on these mods if allowed .

Rick

[rubblebags]

No room, had to go inside the rad. Still handled 200hp in one end of the gearbox, and turning 35" tyres other end just fine.

, but yeah, its more sensible that way.

The standard cooler in the bottom of the rad setup is good enough for most normal cars, only two or three loops of pipe, and its only cooled by the water in the rad, which will stay the same temp regardless of how hard the gearbox is working. Any multi row finned cooler in air is gonna be better than that in my opinion.

If anything, more danger of the gearbox running colder than design temps.

But hey......

Yea thats the opinion I was looking for that its more efficent air cooled than water cooled.

My thoughts were that the cooled water being forced accros the oil cooling tube may be more efficent. It appeares to be sending hoter water back in to the engine. Any Idear where the oil cooler is on the 3rd Gen is that seperate. If so they may have learned from thier experiences.

[marky]

Sell the other KIDNEY time GEOFF

[Rob]

Yea thats the opinion I was looking for that its more efficent air cooled than water cooled.

My thoughts were that the cooled water being forced accros the oil cooling tube may be more efficent. It appeares to be sending hoter water back in to the engine. Any Idear where the oil cooler is on the 3rd Gen is that seperate. If so they may have learned from thier experiences.

Oil cooler is still in the rad on the 3rd gen but it doesn't restrict the outlet and I think the rad might be bigger anyway.
HTH
Rob

[AndyLala]

Geoff,


Our Oz members also concur for their needs. Bump the radiator upto 3 core with sorted header tanks (top and bottom). Of note, is that the water pump was redesigned in 1997, reducing the number of vanes in the pump but increasing their size. Something about reducing the cavitation in the pump.

Moving the Auto box cooler from the rad has mixed reactions, although it makes more sense to increase the flow capacity by removing the obstruction at the bottom of the tank. I am inclined to move it out, and add a fan or two to it.

Leave the existing Auto box fan that sits infront of the radiator, just add a manual switch to it. On VagrantNo.2's comments, I would rather move the oil cooler out of the way of the radiator completely, of course, there isn't enough room to swing a cat there... so...

andyL

[rubblebags]

Just had a word with john from Viking Rads he has a lot of mix feelings .

He recons the external cooling fixed in front of the rad is robing peter to pay paul.
Also he thinks that the oil cooling pipe is not enough of a restriction to cause concern.
Then again he has not seen the pipe inside yet.
I am taking the rad down for him to look at tomorrow.

[marky]

Just a quickie www.milneroffroad.com for anyone else
NEW! Radiators
New Units - Outright Buy

Hilux MK3 2.4D £150.00
Hilux MK4 2.4TD £150.00
Surf 2.4TD LN130 £160.00
The SURF is listed but it does not state if manual or auto on this one.

[AndyLala]

Marky,


I think the radiators listed for the LN130's are manual radiators. So that would fit in with Geoff's plan, if he can afford the auto box cooler... as well. We await John's response once he opens up Goeff's Rad. John says he's no expert (hydrodynamics engineer - or words to that effect) in his opinion, perhaps the reason for his hesitation, He recommended to change one thing at a time (prudent). We'll see what he comes up with. Perhaps a slightly larger core, and see what the temp guage does under load. Then perhaps an additional oil cooler if nothing really improves.

Of interest, is that John did think that the engine bay was rather 'crowded', and perhaps assisting in evacuating all the hot air behind the radiator might pay higher dividends (ie. add to the RAM effect, Geoff has some further thoughts on this which I will try this weekend), as might an additional engine oil cooler.

Milners still don't list a price on the 2.8TD (KZN130) manual radiator, which some of the Australians favour as a swap out for the 2.4... is it the same size as the 2.4?

We wait with bated breath...

andyL

[marky]

A bonnet vent would assist in cooling but you would have it facing the opposite way to let hot air out rather than the other way round.

[AndyLala]

Agreed.


I think Kenlowe did a bonnet fan for exactly this purpose, just can't seem to find the link.

andyL

[Vagrant No2]

A bonnet vent would assist in cooling but you would have it facing the opposite way to let hot air out rather than the other way round.

Forward facing for use with an intercooler under bonnet, and back facing to aid venting of a non intercooled vehicle or intercooled vehicle with intercooler at front of vehicle rad .
On the rally car we used washers under the hinge mounting bolts to lift the rear of the bonnet to help cooling . Would not look to good on a Surf .

Rick

[TonyN]

On the rally car we used washers under the hinge mounting bolts to lift the rear of the bonnet to help cooling . Would not look to good on a Surf .

Rick

On my old beetle, the lid hinges were spaced out to leave a gap at the top.

[Greebo]

link for bonnet fan.

http://www.pacet.co.uk/bonnet.htm

dont think they sell direct but they list Scorpion racing as one of there main dealers.

Scorpion Racing
London NW1Phone
Fax0208 2114888
0208 2114999

they also do auto coolers
http://www.pacet.co.uk/oilCool.htm

[Vagrant No2]

On my old beetle, the lid hinges were spaced out to leave a gap at the top.

Was that so you could get the key in to wind up the spring



Rick