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donmacn



Member Since: 07 Nov 2017
Location: Nth Scotland
Posts: 1829

300Tdi radiator..... time to replace?
Hi folks,

So while fitting new driving lights today, I had a chance to get up close and personal with the radiator.

After years of barely looking at the temperature guage, I did have a long run in the autumn where the needle snuck up a little more than normal. It's not been an issue since - but it has got colder.

Any thoughts on this? Obviously it's seen better days, but how bad in comparison to others? Urgent replacement?


Click image to enlarge


For a pretty big section, all the cooling fins between the core channels are completely gone.

cheers

Donald Donald

1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong
(The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html )
2000 Range Rover P38 4.0L V8

in the past..
RR classic - fitted with 200Tdi
1984 RR classic - V8 with ZF auto box
1993 Discovery 300Tdi

not to mention the minis and the Type 2 VW camper...
Post #674185 29th Dec 2017 7:39pm
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shropshiredefender



Member Since: 05 Jun 2017
Location: Shropshire
Posts: 832

England 2011 Defender 110 Puma 2.4 USW Santorini Black
Just checked out your build thread and given the care and attention you've lavished on your 300tdi, and the mileage, it's time for a new rad. Small outlay compared to a warped head etc. etc. Thumbs Up
Post #674187 29th Dec 2017 7:46pm
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Lou Sparts



Member Since: 15 Apr 2012
Location: Kent
Posts: 1501

United Kingdom 2005 Defender 90 Td5 XS CSW Zambezi Silver
That’s exactly what happened to the rad in my 300 Tdi when I had it. Never lost any coolant and never got hot.

I replaced it with a more modern aluminium one and decided to do the viscous coupling and P gasket and water pump for good measure while the system was drained.

If that’s the original rad it’s done well. 2005 Td5 90 XS

Steve
Post #674190 29th Dec 2017 7:49pm
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donmacn



Member Since: 07 Nov 2017
Location: Nth Scotland
Posts: 1829

shropshiredefender wrote:
Just checked out your build thread and given the care and attention you've lavished on your 300tdi, and the mileage, it's time for a new rad. Small outlay compared to a warped head etc. etc. Thumbs Up


Yeah, I think so. I was just quite surprised to see it in that state - as I say no issues so far (touch wood). I just wondered how it stacked up against others experiences?

LouSparts - thanks - pretty sure that's not the original. I'd have to go into that scary box of receipts... but I reckon it's been changed at some point. 24years, and 218k miles would suggest that anyway. Donald

1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong
(The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html )
2000 Range Rover P38 4.0L V8

in the past..
RR classic - fitted with 200Tdi
1984 RR classic - V8 with ZF auto box
1993 Discovery 300Tdi

not to mention the minis and the Type 2 VW camper...
Post #674191 29th Dec 2017 7:49pm
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trickster5000



Member Since: 12 Dec 2015
Location: East Yorkshire
Posts: 487

United Kingdom 1989 Defender 90 300 Tdi CSW Arles Blue
I had to replace mine because it had developed a leak - was pleasantly surprised to find you can get an aluminium one for £100 so I would say given the state of yours it would be best to replace just to be safe Thumbs Up Matt.

'89 90 CSW with a 3.5 V8 conversion (WIP) - http://www.defender2.net/forum/topic46809.html
Post #674198 29th Dec 2017 8:02pm
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shropshiredefender



Member Since: 05 Jun 2017
Location: Shropshire
Posts: 832

England 2011 Defender 110 Puma 2.4 USW Santorini Black
donmacn wrote:
Yeah, I think so. I was just quite surprised to see it in that state - as I say no issues so far (touch wood). I just wondered how it stacked up against others experiences?


My old 300tdi's rad went the same way as yours after around 150k miles - eventually it gave up the ghost warping the head Big Cry
Post #674201 29th Dec 2017 8:07pm
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L110CDL



Member Since: 31 Oct 2015
Location: Devon
Posts: 10491

England 
Same as mine as it developed a leak so replaced it with an all aluminium one Wink 1996 Golf Blue 300Tdi 110 Pick up. Keeper.


Clayton.
Post #674269 29th Dec 2017 11:00pm
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Alex1976



Member Since: 24 Jan 2013
Location: Buckingham
Posts: 596

England 
I would say get it changed, it’s not worth overheating and the damage that could do. I put an alluminium rad on my 300tdi a couple of years ago and it still looks like new and cools well. I picked it up on eBay for about £120, there are plenty on there.
Post #674333 30th Dec 2017 9:16am
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donmacn



Member Since: 07 Nov 2017
Location: Nth Scotland
Posts: 1829

Been looking at new radiators, and it seems there's quite a discussion to be had about ally vs copper and brass vs plastic and alloy...

specifically on th aluminium ones, any particular recommendations? Obviously allisport, but they're a bit expensive right now - and I don't really think my car needs "improved cooling". I think the standard rad has done just fine all these years. Donald

1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong
(The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html )
2000 Range Rover P38 4.0L V8

in the past..
RR classic - fitted with 200Tdi
1984 RR classic - V8 with ZF auto box
1993 Discovery 300Tdi

not to mention the minis and the Type 2 VW camper...
Post #674351 30th Dec 2017 10:44am
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Dave T



Member Since: 07 Jun 2013
Location: Glasgow
Posts: 487

United Kingdom 1994 Defender 90 300 Tdi SW Cairns Blue
I have one from here, been in two years, the temp has been rock steady on motorways, in heavy traffic and hard off roading.

https://www.ebay.co.uk/sch/budget-radiator...2749.l2654 2015 RRS Autobiography SDV6
1994 Def 90 300tdi
Post #674449 30th Dec 2017 7:04pm
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zsd-puma



Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

United Kingdom 2010 Defender 110 Puma 2.4 USW Santorini Black
That's pretty much knackerd. If the end tanks are in good nick you can probably get it rebuilt.
Post #674501 30th Dec 2017 9:21pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 7683

2011 Defender 110 Puma 2.4 USW Stornoway Grey
That needs changing before it does go. Replace with a std one, look how long std ones last. Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #674503 30th Dec 2017 9:38pm
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walfy



Member Since: 29 Aug 2007
Location: Frome
Posts: 2641

 
When I fitted a 300 auto to my 90 I replaced the tired rad. Ended up going to a local place in Bristol for a recore, had a bigger core fitted. Increased volume by 20% IIRC. Only cost £140 for cash.
Would of thought that there would be somewhere similar like that near you? 110 D250 SE HT
110 USW SOLD
RRE HSE Dynamic Gone, wife killed it
VOLVO XC60 R Dynamic with some toys

Polaris RZR 900XP SOLD
Post #674529 30th Dec 2017 10:30pm
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donmacn



Member Since: 07 Nov 2017
Location: Nth Scotland
Posts: 1829

"Would of thought that there would be somewhere similar like that near you?"

Nope, I suspect not. No offence or challenge intended whatsoever. I sometimes get quite jealous of the number/density of specialist garages/services "way down south".

I know we have someone locally who will skim heads, regrind bores etc. under the name of Precision Engine Services. I think my head was skimmed there at least once, but things liks radiator re-coring probably means taking it out, parceling it up, sending it away, waiting a week or two......

That's why I usually end up getting a new part and fitting it, rather than getting involved with rebuilding/repairing. Despite its age, this is my daily car, not somethign that sits in the garage waiting for the postie.

New radiator it is then. I tend to agree with the 'buy genuine' thing though. Even allowing for my memory I think this will be the second one in this car, probably about 10 - 12 years ago? I can live with that.

Thanks very much for all the responses though. It's typical of my experience with this car that I get a wee warning before anything major 'pops' and leaves me stranded. It's never done that to me! Donald

1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong
(The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html )
2000 Range Rover P38 4.0L V8

in the past..
RR classic - fitted with 200Tdi
1984 RR classic - V8 with ZF auto box
1993 Discovery 300Tdi

not to mention the minis and the Type 2 VW camper...
Post #674574 31st Dec 2017 12:31am
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Retroanaconda



Member Since: 04 Jan 2012
Location: Scotland
Posts: 2547

Scotland 
Post #674762 31st Dec 2017 6:52pm
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