To Watercool or not to Watercool

if you have a larger radiator fitted i cant see a problem...the radiator may be big enough to handle the intercooler in front of it as it is...but if in doubt get one with more cores

Hi there barnsy, I have just been through all this the last few weeks and 9 out of ten said you dont need to water cool the diesel as the exhuast gas temps are a lot cooler than a petrol motor. Ring turbo glide in woolongong or check out there web site www.turboglide.com.au they have the specs on there home page for the 2.8/3.0 motor. Give them a ring and ask for John very nice man and has been fitting turbo's for the last 30 years, I havnt done myn as I was changing vehicles but have had to put things on hold but I was booked in there to get it done.Have a look at his warranty 2 years unlimited with out water cooled 12 months if you want it water cooled. If you ring other places and ask them they will tell you to fit a fuel compensator and all the other crap to go with it and you will end up with a bill of 5k. My mate has his 5l done and goes brillantly at 8 pound boost running a garret turbo. Its all up to you there is heaps on this subject as I found out when I was also asking the questions. Regards Steve M

I replaced the standard, small water-cooled turbo on my GU last year with a Denco kit. This is a Schwitzer turbo and is not water cooled.

I don't think it will make any difference what type of turbo you fit, so long as is fitted as the manufacturer intended....IE: if it's a turbo designed to have water passing through it's bowells, then it MUST be water cooled. I secretly hoped that with the new one being non-water-cooled, that the over-warming issues I'd been having with the Patrol (whereby water temps get up to around 118oC at the extreme worst case scenario), might subside. This didn't happen, so it blew my theory that the turbo may have been contributing to the temp of the water/coolant.

Get Denco or Turboglide involved and you'll get the right deal.

Cheers

Roachie

My pajero runs a non water cooled turbo.
Watching the EGT, it generally gets down to 150 deg within 60 secs at shutdown, after taking it easy/steady for the last kilometre home.
Maybe a non water cooled one and a turbo timer would be OK?
Still the original turbo after 270,000k and this model is well known for short turbo life. (Hopefully I haven't put the death knock on it now :-)).
The turbo bearings have a good oil supply, and the oil is cooled, and I use good oil.
Maybe water cooling is just something else to go wrong?
Depends how you drive I suppose, how hard you will be pushing it?

Barnsy
My opinion is water cool it, i have a turbo glide unit on my 80 series when i installed it, the unit was not water cooled 6 mths after installing it i fitted water to it and it made a difference to the temp of the motor

Water cooled units last longer because when the motor is shut down the oil in the turbo gets hot and over time causes varnishing inside

it will increase the life of the turbo its a known fact that anything which runs cooler will last longer

Keep in mind MOST of todays turbo diesels Factory fitted are water cooled