Radiator replacement options for 240z with L28 block?

[Graeme - CZ]

Hi all,

I'm considering replacing my radiator. It has leaked previously which I fixed with Radweld, but think I need to do a more permanent fix. Not quite sure what to replace it with. Welcome any ideas / thoughts?

Broadly speaking, I am happy with a straight replacement. I've no intentions to modify the 2.8L engine.

Also, anyone know of a source in the UK for a replacement? I have also considered getting it reconditioned, but suspect that may cost as much as a new radiator.

Thanks, Graeme

 

[Turn & Burn]

Whatever you choose it worth knowing that the late 260z / 280z is a larger / taller radiator with added capacity. Not sure how they fit in a 240z but I guess with a bit of fettling they will. The later front panel / crossmember was modified to take the bigger rad.
If you want an original bigger radiator drop me a PM.

 

[jonbills]

I got a radiator like this. Not this one, but like this that was available on ebay UK. The 4 row ones don't seem to be available in UK any more.

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/152034797300

Fwiw, I also had a leak in my original rad and repaired it with solder, which was fine for several years.

 

[Graeme - CZ]

I got a radiator like this. Not this one, but like this that was available on ebay UK. The 4 row ones don't seem to be available in UK any more.

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/152034797300

Fwiw, I also had a leak in my original rad and repaired it with solder, which was fine for several years.

I assume it fitted ok?

 

[Graeme - CZ]

Whatever you choose it worth knowing that the late 260z / 280z is a larger / taller radiator with added capacity. Not sure how they fit in a 240z but I guess with a bit of fettling they will. The later front panel / crossmember was modified to take the bigger rad.
If you want an original bigger radiator drop me a PM.

Sounds like i need to do a bit of research. Will PM you.

 

[jonbills]

I assume it fitted ok?

It did and works well.

 

[toopy]

I believe a later Rad will fit in a 240z, just it will hang lower at the bottom as its obviously taller, and in any case some of that extra capacity will be covered by the cross member, so achieves little with respect extra cooling.

 

[Bazzateer]

Any radiator reconditioner should be able to recore your rad with a modern more efficient matrix.

 

[240L31]

I got a Mishimoto 240Z radiator, it is a perfect fit. Brought down my coolant temperature from a constant 3/4 reading to always below 1/2.

 

[uk66fastback]

I've got an ali one on my 240 I am replacing and will need shot of. I don't think it's very old either - came across in the car when I imported it. I'm replacing it with a recored original Saccy sent me.

 

[AliK]

I was considering one of these (but the late 260z version) as I like the more efficient cooling but the pretty stock look ....

https://www.thezstore.com/page/TZS/PROD/classic15d/16-7001

Having said that the aluminium radiators would probably be more efficient. [emoji848]

 

[SacCyclone]

The Z store is what I was going to suggest.....in Cali we like to use the 3 row for extra capacity and cooling as the 100F days are brutal in traffic.
Mike

 

[Farmer42]

The rad for a 240z has a different outlet pipe at the bottom than the 260z. The 240z pipe curves upwards with a different shape hose whereas the 260z is straight.

I got mine for a 240z off Ebay and it has been fine. The only thing you need to look out for is that on some of the cheaper ones the outlet pipe is welded using several small sections to make the curve. The hos will not seal very well and the welds aren't great. Try to get one with a smooth curved pipe. The Mishimotos are pricey but good quality.

If you decide to recore your original then make sure you get the top and bottom tanks checked thoroughly. I went to recore mine but had several pinholes in each tank. Apparently the coolant rots them from the inside.

 

[AliK]

The Z store is what I was going to suggest.....in Cali we like to use the 3 row for extra capacity and cooling as the 100F days are brutal in traffic.
Mike

That’s good to hear! Do you know of the dimensions are the same or is the 3 core slightly fatter (i.e. closer to the fan)?

 

[Bazzateer]

I went to recore mine but had several pinholes in each tank. Apparently the coolant rots them from the inside.

No doubt caused by previous owners using weak or no corrosion inhibitors in their coolant.

 

[SacCyclone]

That’s good to hear! Do you know of the dimensions are the same or is the 3 core slightly fatter (i.e. closer to the fan)?

Yes, they are fatter with the extra row but should not interfere with the factory fan clutch assembly as it is probably no more than an inch or so.
Mike

 

[Woody928]

Mishimoto, fit and forget. Fantastic cooling capabilities and direct bolt on...

IMG_9949 by Mark Woodrow, on Flickr

 

[toopy]

Mishimoto, fit and forget. Fantastic cooling capabilities and direct bolt on...

IMG_9949 by Mark Woodrow, on Flickr

Where did you source the metal inlet pipe for the air filter? Ive got a 90 degree piece for the front part but not the longer section yet.

 

[Woody928]

Where did you source the metal inlet pipe for the air filter? Ive got a 90 degree piece for the front part but not the longer section yet.

Chopped up from a Honda CRX induction kit off of eBay which I believe is now discontinued based on conversation I've since had.

 

[Graeme - CZ]

Mishimoto, fit and forget. Fantastic cooling capabilities and direct bolt on...

IMG_9949 by Mark Woodrow, on Flickr

Lovely engine bay!


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