So still trying to fix the Zed, and having some cooling problems, the radiator is boling over into the overflow, tried changing the rad cap but no success, more worrying thing is that the bottom of the radiator seems to be staying cold where the top is boiling.

 

Don't think it's the hose either at the bottom. So thoughts were to get a new alloy radiator and I've already got some silicone pipes to fit anyway. then take off the water pipes on the block and check the thermostat.

 

Question for now is, which radiator to go for? I've seen a few on eBay for around the £118 mark, and zcenter have one for £120.

 

Has anyone bought a bad one?

 

Car was an auto at somepoint but is now a manual if that makes any difference.

 

Any help or thought welcome as always.

If your rads in not bad condition just flush it out. I use steradent denture tablets. really gets the crap out the system !

http://www.300zx.co.uk/forums/showthread.php?152125-300ZX-Radiator-Group-Buy

 

the above is fitted to mine and I have had no issues,

The main issue with the stock rad is the brittle old plastic end tanks, the top hose tends to snap off!

 

I too purchased an alloy one from japspeed, I phoned up and got the group but price outside of the group buy offer ;) it offers a touch of insurance in terms of cooling ability and it's one less old part to break. The downside is that you may or may not get lucky in terns of how easily the fan shroud fits back on it(yes you do need it, a aftermarket is about effective with stock without. With the shroud were cooking on gas) the other side of it, if you have an autobox esp Jspec ones you will need to make a provision for the autobox cooler.

Well I don't have an auto box now, it's been converted, so does that mean I don't need to worry about the difference between the two?

Correct :) it's only because the stock one loops the fluid through the radiator.

 

Just remember if you buy the rad from zcentre that 120 is plus car plus delivery...it's the same Chinese made rad sold by various companies. So just find the cheapest price, I bet if you phone japspeed and mention the group buy price they would honour it if they have stock.

Got mine from a guy in Sheffield for £108 collected Let me know if you want his co name

 

Sent from my SM-G900F using Tapatalk

Thanks for the info guys.

 

I'm gunna try giving japspeed a ring tomorrow. fingers crossed

Sorted Radiator ordered, and group buy price honoured. Cheaper than any on eBay, and much happier with a reputable brand.

 

Just to be sure think I'm going to whip out the thermostat too and check that while the rads out. busy day Saturday :biggrin:

;) well done mate, defiantly replace the thermostat. While your there the two short water pipes are a cheap and easy bit of maintaince.

I've already got them, got some red silicone short one's, and some red silicone rad pipes to go on. was toying with the idea of polishing the metal hard pipes too, or powder coating, haven't decided yet. where would I get a new thermostat from? I was just going to test it like the service manual states.

Order one from MJP cheap enough mate, would suck to take it out then realise it's duff and you have to wait to put it back together. You will also need some loctite instant gasket, the black stuff. Don't remember if there's any actual gaskets down there, don't think there is.

 

Btw the thermostat has a wrong way up and a right way up, the toggle bit goes up top.

Excellent. I'll get on to Mjp tonight.