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Why prone to overheating?
#9
Just my 2p, and it goes with what these guys have said.

I ran my XUD at 180+hp! sometimes over 200hp with very little cooling problems for 2 years.

The key is, to KEEP it cool, and as Ruan says, not to overheat it.

I found that with the stock rad, and oil cooler, it would get hot straight away pretty much. I then found the rad was old and knackered, so replaced it with a nissens one.. Better, but still overheated.

No chance of doing 5 minutes of full on track time, let alone a full 15 minute session.

I then decided to spend some money, and had a huge 4 core, 10l radiator custom made, and rebuilt the front end with a 16 row oil cooler.

This was waaaayyy better. Could do a full 15 minute session without the temperature even coming up from the 80c mark.

As the guys have said, indirect injection engines makes heat... Simple as. The stock cooling system in good form can just about keep a 90hp xud cool for sustained periods of foot to the floor, but throw in more fuel, more boost and an intercooler partially blocking the rad, along with crusty old radiators and it's a recipe for disaster.

As Ruan said, a decent, fresh cooling system, with decent coolant and some mechanical sympathy should be right enough, but drive it like a tool and you will overheat the head.... Then bye bye gasket.

If you want to do long, sustained periods of high power outputs, you really need to be looking at oil coolers (to take some heat away from the water cooler), and a bigger rad. This, completely, cures XUD overheating and you can give it full whack on a track, for 15 minutes at a time and it'll be fine.

The last thing to watch is EGT. I made sure my car didn't smoke too much under full load, and with the above mods it never overheated and NEVER did a gasket.

Maybe I wasn't trying hard enough Wink

JP
JP
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Messages In This Thread
Why prone to overheating? - by nominous - 14-04-2014, 09:56 AM
RE: Why prone to overheating? - by Danny2009 - 14-04-2014, 10:00 AM
RE: Why prone to overheating? - by ozonehostile - 14-04-2014, 10:28 AM
RE: Why prone to overheating? - by Ruan - 14-04-2014, 10:35 AM
RE: Why prone to overheating? - by welshpug - 14-04-2014, 10:39 AM
RE: Why prone to overheating? - by nominous - 14-04-2014, 11:39 AM
RE: Why prone to overheating? - by Ruan - 15-04-2014, 10:44 PM
RE: Why prone to overheating? - by Paul Baldwin - 15-04-2014, 10:35 AM
RE: Why prone to overheating? - by jammapic - 16-04-2014, 01:15 PM
RE: Why prone to overheating? - by Daniel306 - 16-04-2014, 02:24 PM
RE: Why prone to overheating? - by jammapic - 16-04-2014, 02:32 PM
RE: Why prone to overheating? - by Toms306 - 16-04-2014, 03:10 PM
RE: Why prone to overheating? - by Daniel306 - 16-04-2014, 04:11 PM
RE: Why prone to overheating? - by nominous - 17-04-2014, 11:46 AM

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