2GR cooling

[mknz]

I'm sorry, I think I've struck a nerve . That wasn't my intention

Yep. But driving down the road you tend to find there is quite a lot of pressure and quite a lot of air passing through. Unless your air intake is absurdly restrictive. When you're stuck in traffic that's when you tend to find you need serious fans to pump enough air through there.

Yes it is significant but at the same speed a thicker radiator will impose a greater resistance and thus less net flow through however on average each air molecule will carry more heat. There is a balancing act to get the optimum thickness, manufacturers however may use something thinner for whatever reason (thinner one works fine so save money, opt for longer/taller so sport model/race car can use thicker etc). I imagine many manufacturers use a thinner radiator so you can do exactly what you did with your Holden and get great results. Most of my experience and knowledge is with stationary radiators so I'm definitely out of my depth (look a few paragraphs below)

Ash may be interested Michael, and good on him if he is. Me, I'm just going on my experience of race working an old Holden to divide its 0 - 100 kmh time by a factor of three, and what worked to bring the extra heat generated by the extra herbs back under control in the most cost effective manner available to me.

I didn't have engineering books to consult. Just a bunch of experienced old professionals that built race cars and dragsters, and some experimentation and evolution while observing the results.

I'm not out to claim I know better than anyone else, or that I'm more learned. I'm merely trying to pass on some stuff I learnt through my own practical experience in the hope it helps someone else. But if that paints a target on my back, well hey... Call me a dummy and let's leave it at that.

My point was that this a large topic that we can be discussing here for a long while and there are more knowledgeable people than both of us. I didn't mean to discredit your input; quite the opposite. Your input is important because development comes from both the actual testing and the model nerds; neither is more important than the other because they lead to each other. I'm not an authority either, the only knowledge and experience I have is from building computers(on forums and built many) and a few engineering courses; I don't do this for a living. I want to solve problems and learn, the best way to do that is to give my thoughts and test them against others minds.... bla bla bla getting off topic

This is Ash's thread anyway so let's just hope he manages to cure his overheating issues. That's all that matters here.

Yes, I hope we managed to be some use to him and he can carve up some roads soon

[mickeyduck]

All good Michael. And keep sharing that info mate. As you say both the theory and the experimentation are necessary and they work together to advance our knowledge. None of us know everything no matter how well tested our theories may be. In fact the more we dare to think outside the square or try something different, the more likely we are to make progress. Even if nine tenths of innovations fail, you don't move forward by staying where you are. Heck you only need to look at the technological advances of the last 200 years to see that!

And yeah I want to see that 2GR AW back in action too. It's just too darned special.

As for me I have yet another MR2 to fix it would seem... Cars eh?

Catcha on a run mate.