Thread: Heat and Diesels

Mine drives better in cooler weather and in the mornings.

They (whoever they are) say that the air is denser and therefore contains more oxygen.

I am interested in the larger intercooler idea.

Bring on the theories and hopefully some good practice.

I didn't experience any problems. Is your air filter element clogged?

Can't say I noticed any dramas either.

About the bigger intercooler though.

People have said that large spotties have made no noticeble difference to the engine temps (apparently they don't restrict airflow like I thought they might), but wouldn't a larger intercooler block off more of the radiator from direct/cool air ?

Has anyone fitted a larger intercooler and what is your experience of it ?

Turbos in general hate hot and / or humid weather. The cooler the air, the more dense and the better the turbo likes it. That is why you see all these boy racer cars running large intercoolers, better performance out of their turbo.

Yeah but I'm wondering about the effect on engione cooling as intercooler is in front of radiator...

For someone that joined 5 months ago you must have a record low post count. [img]style_emoticons/<#EMO_DIR#>/ohmy.gif[/img]

Not everyone is here all of the time.

Many people only check every mopnth or so, others weekly.

Many only come here when they have a problem, or only post when they see a question to which they know the answer.

Only 20% of the people here have even made a post, 80% have never said anything.

Fair enough, too.

The more people with answers, the better !

Thanks guys. My aircleaner is fine. The reason I rasied the intercooler issue is from other applicatios. I am into drag racing as well as 4wd's. While I am not into turbo 4 cylinders (aka rice burners), I have a number of friends who are. To gain max HP they use bigger intercoolers. They claim the benefit of these are that cooler air builds HP. I know this to be the fact from normal aspirated petrol race motors - significant differences in performance between 15C and 30C. My understanding on the "air blockage"issue is that the intercoolers that are placed in front of the radiators do not hinder airflow enough to cause problems. I guess the air flows straight through them. My problem definitely seemed to be heat related. After thse temps dropped verything went back to normal. Oh well, who knows!
cheers
Dave in Brissy (much cooler now)