got the fd dynod today

[JayDee]

Intake piping looks good.

[Grizzly]

Have you seen my charge cooler?

The cookers rad is at back of my car underneath, piped front to back inside the car. With the amount of water volume on the system I don\'t think it will ever heat soak, plus I\'ve got pre turbo WI system going on there too:)

oo Shiney

Charge coolers where all the rage about ten years ago when PWR / Pace started doing them, I had some experiance with them on 5 Turbo\'s but only read about them on FD\'s,  seem to remember a number of people in the UK using them? The idea is really good because water absorbs heat more efficiently but in practice i think most where to small for the volume of air the FD was kicking out so the air temps where disappointing. But some WI will soon sort that out

[BlitzBoy]

You have to get the right size barrell for HP output expected, you should be fine Grant looking at yours, espcially if running WI

[Grant Monkhouse]

oo Shiney

Charge coolers where all the rage about ten years ago when PWR / Pace started doing them, I had some experiance with them on 5 Turbo\'s but only read about them on FD\'s,  seem to remember a number of people in the UK using them? The idea is really good because water absorbs heat more efficiently but in practice i think most where to small for the volume of air the FD was kicking out so the air temps where disappointing. But some WI will soon sort that out

It is the biggest PWR do. My cooler originally came from the rx8 drag car that reworx did?? Keith had it, then Steve then me.

 Rated at 1200 HP iirc so that should be good for me. If air temps get hot I will run ice water at the track. Also going to be running a fan or 2 on the cooler rad as that\'s a no brained really, something I think a lot of people that run them don\'t realise it is something that should be done.

[Grant Monkhouse]

You have to get the right size barrell for HP output expected, you should be fine Grant looking at yours, espcially if running WI

Cheers mark. If I develop the car into a drag car only I will be going for the ice cooler they do but that\'s a long way off yet. Lol

[zeppelin101]

If you\'ve got a half decent radiator, WCAC should be fine.

The :censored::censored::censored::censored:y little things they seem to supply with the kits when you\'re trying to dump 150C of air temp are half the problem. They can\'t reject enough heat before the water has flowed through it.

[Grant Monkhouse]

When I was emailing a guy at PWR he advised me that with a charge cooler the bigger the better and that WI was to have as a larger volume of water in the system as possible, the volume of water is most important factor. I have seen a number of cc systems where the cooling rad is about 1 foot away from the cooler and they\'re using a normal radiator. That is not good. It won\'t cool the water and with the volume of water being so small it heat soak more than cool. Not good:(

[zeppelin101]

That\'s fine to a point, but what good is a massive volume of water if you haven\'t got the right spec radiator to actually get rid of the heat at the other end?

It\'s a balancing act. And water is heavy.

On balance, I prefer an air-to-air cooler for simplicity.

[Grant Monkhouse]

Intake piping looks good.

Thanks, haven\'t finished it yet, going to be cutting the pieces to complete the plenum this weekend if I get time, then send it off with my mate to get welded together. Making it from 3mm ally. Hopefully be strong enough.

[Grant Monkhouse]

That\'s fine to a point, but what good is a massive volume of water if you haven\'t got the right spec radiator to actually get rid of the heat at the other end?

It\'s a balancing act. And water is heavy.

On balance, I prefer an air-to-air cooler for simplicity.

Yes water is heavy but my cars light! If I decide to compete I will be under the minimum weight even with a full roll cage. I can try different radiators if the one I have doesn\'t work right. The guy I spoke to at PWR is really helpful and full of advice so I would go to them for help.

[Rzla]

Grant here is the dyno graph

[Grant Monkhouse]

Awesome, cheers rzla

[Grant Monkhouse]

What causes the change in the power curve at 7,000rpm?

[Grizzly]

Do you find the Drag cars (bigger porting) have a bigger gap between the HP and Torque? tbh i was a little suprised 462lbs and 770hp?

I bet you have to hold on when you hit 5500rpm (770 rwhp )

[Will66]

The change in the power curve at 7000 rpm is where the engine torque stops climbing quite so rapidly, I\'m guessing it\'s peak boost that it holds to about 8500 rpm.  Power is a function of torque times rpm, so as both rpm and torque increase you get big power increases, once at peak torque you only get power increasing with rpm.  From 7000 rpm up to 9000 this engine has a pretty level torque curve.  

My guess is that it feels like being strapped to a charging rhino going up through the gears from 7k.