Radiator - recore or replace?
Radiator - recore or replace?
Author
Discussion

G5FTH

Original Poster:

504 posts

208 months

Sunday 27th October 2013
quotequote all
I have needed to top up the coolant level on the Griff occasionally and finally got around to investigating the source of the leak.
The bottom corner of the radiator is wet, everywhere else is fine. I have removed the radiator and its in really good condition with no visible damage.
The car never overheats and I am wondering whether to have this radiator repaired or go for an ally one.
Normal rads seem to be about the £350 mark and ally about £450.

Any advice would be appreciated.
Steve.

Pete Mac

757 posts

160 months

Sunday 27th October 2013
quotequote all
Steve, I've just been through exactly the same experience 2 weeks ago. Ally rad, looks in great nick, losing a bit of water, couldn't find leak, spent a lot of time on hoses, clips etc and then finally spotted a little wet patch at one corner.

Rang up Aaron Rads and a new one was coming in at about £300+ or so.

I want to spend some time replacing all the hoses clips, steel pipe etc. with ACT products or similar but not right now so I did the unthinkable and popped in some K-Seal, recommended as the best sealer.

Spent time bleeding system etc. and it worked a treat, absolutely no loss of water. No change in temperature whilst running. I don't know how long it will last but it has given me some thinking time to decide what to do with the whole cooling system and in the meanwhile it has cost me a fraction of the cost of a new rad.

Your choice, I am sure I will get some abuse for this.... otherwise Aaron Radiators are a good option for a new aluminium, high performance radiator

pac1uk

272 posts

214 months

Sunday 27th October 2013
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I fitted an Aaron Alloy radiator back in March, good quality. Also fitted ACT Stainless steel swan neck, silicon hoses and otter switch. No leaks and kept cool during the summer months.

You could get a re core for your existing radiator this is the cheapest route, worth checking all the hoses. I wanted to upgrade and replace to give peace of mind that the cooling system won't give any problems.

Wildfire

9,917 posts

275 months

Monday 28th October 2013
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I had some cooling issues a few years back. Replaced a load of the coolant system, including a Rad Tec alloy rad. It's been great.

Turned out to be a fcensoredd sender unit!

Doh! silly

ESDavey

713 posts

242 months

Monday 28th October 2013
quotequote all
If its already out of the car, I would get it repaired or re-cored. You may not be able to see the hole but under pressure, it could become obvious & repairable by a specialist.

Either way fix it properly as the removal / refitting is a pain !

G5FTH

Original Poster:

504 posts

208 months

Wednesday 30th October 2013
quotequote all
Hi,
I looked at the price of a re-core etc.
I can have the existing one re-cored for £150, new standard one for £320 or an ally one made for £365.
It had to be the ally one. I looked at a few and have ordered one from the link below:
http://www.highflowracing.co.uk/radiators.html
I'll let you know what its like but it looks good on the website.

Just to add: The car already has stainless pipes and silicone hoses, all in good condition. Cheers!

Pete Mac

757 posts

160 months

Wednesday 30th October 2013
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Steve, I will be interested as I will be going the same way probably, for next summer. Cheers Pete

T1pper

276 posts

159 months

Monday 4th November 2013
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I had my old original unit recored this year as part of a revamp of the cooling system, I fitted some silcone hoses and the stainless sections from ACT,everything has worked really well with no overheating issues this summer.

I belive that the ECU will still run an enriched fuel mix untill the engine gets up to a working temp, sometimes with the increased cooling of alloy rads this can take a lot longer and could possibly stuggle to reach the level at all with a lower ambient temp, I personally would only run an alloy rad for a fast road/track day car.

Hoover.

5,993 posts

265 months

Monday 4th November 2013
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alloy rads have been known to fracture with the twisting of the chassis......... the originals can cope better with the flexing...... just do a search on alloy rad failures on TVRs... yes people will rave about them because they are additional bling, but search out the long term user threads on failure wink

tom's dad

299 posts

262 months

Tuesday 5th November 2013
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Not wishing to tempt fate, I changed to an ally rad a couple of years ago, after paying for a re-core that split within a year....And it looks luvverly.

Aussie John

1,021 posts

254 months

Tuesday 5th November 2013
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If you go for a recore ask them to put extra solder around the core to tanks which seems to give a bit more mechanical strength.

Hedgehopper

1,542 posts

267 months

Tuesday 5th November 2013
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Hoover. said:
alloy rads have been known to fracture with the twisting of the chassis......... the originals can cope better with the flexing......
Correct...whether its alloy or original don't bolt the radiator in rigidly like it's some sort of bulkhead. Use very thick rubber washers or bobbins and don't do the nuts up tightly...let it float. The radiator on my X-Trail floats by about 5-6mm in any direction thus preventing any load being applied to the end caps.