21 Turbo Aluminium Radiators

[Deleted member 486]

When I owned KOR I fitted one of the Winner Racing radiators from eBay. If I remember it was a 32mm core radiator - standard thickness is 26mm.

Whilst looking for something else on a Chinese site I came across Winner Racing and they offer a 52mm (twin 26mm) core radiator. Looking at the site I think it would have to be a bulk buy and would probably come in at between £150 and £200 per radiator.

Firstly is there space for this? Guessing it would need slimline fans but not sure.

Secondly, would this be of any interest to anyone? If it is then I might contact them and get a firm price.

 

[DaveL485]

Secondly, would this be of any interest to anyone?

I dont know anyone thats struggled to cool the car with the 32mm to be honest. The double width would cause space problems at the front too, I wouldn't have room with the large intercooler and fan on mine.

 

[Deleted member 486]

I dont know anyone thats struggled to cool the car with the 32mm to be honest. The double width would cause space problems at the front too, I wouldn't have room with the large intercooler and fan on mine.

That was kind of my thinking as well. I just happened to see it and wonder if people were interested. I also thought that a 52mm core would be an issue for anyone running a FMIC due to package constraints.

Probably one to consign to the dark recesses of the mind and never worry about again!

 

[DaveL485]

I was contemplating a motorbike rad mounted in the OS wing where the primary intercooler used to sit, no direct airflow but a high speed fan and a redirect pump (like the aux coolant pump) on it activated by the ECU if the engine temp gets over 96° (Currently the main fans cuts in at 94° and goes off at 92°).

For super hot days or high altitude (like the Alps where there is 15% less air in the air meaning less cooling effect and more throttle needed to create the same power)

 

[Deleted member 486]

I was contemplating a motorbike rad mounted in the OS wing where the primary intercooler used to sit, no direct airflow but a high speed fan and a redirect pump (like the aux coolant pump) on it activated by the ECU if the engine temp gets over 96° (Currently the main fans cuts in at 94° and goes off at 92°).

For super hot days or high altitude (like the Alps where there is 15% less air in the air meaning less cooling effect and more throttle needed to create the same power)

Sounds like an interesting concept. Could certainly provide some additional cooling but I would worry about dissipating all that heat directly in to the engine bay. But I can't think of any other solutions off the top of my head - maybe with some careful ducting the head could be taken down to below the exhaust?

 

[DaveL485]

No mate there is venting in the wheel arch behind where the intercooler sits, you just direct it out of there into the wheel arch

 

[Deleted member 486]

No mate there is venting in the wheel arch behind where the intercooler sits, you just direct it out of there into the wheel arch

Nice.
So - thinking about intercoolers. What do you think about about a bigger intercooler there (like the big R5 "breadbin" types) with an extractor fan pulling down and out, then deleting the top intercooler?
I know that FMIC is the probably the best route (I have another thought but that's for another time) but I always like to think about less intrusive alternatives!

 

[DaveL485]

I don't think the fan is necessary but the GTT cooler would work. I'm not sure I'd delete the top cooler though that reduces your net gain even if the top cooler flows like utter crap.

 

[Deleted member 486]

I don't think the fan is necessary but the GTT cooler would work. I'm not sure I'd delete the top cooler though that reduces your net gain even if the top cooler flows like utter crap.

I am not too sure about the top cooler delete either but I was thinking that the gains from the bigger lower one would offset the crappy top one. Plus, if the flow was better, the compressor wouldn't be working as hard and thus the charge going in to the intercooler wouldn't be as hot.

I was also wondering if running finned metal pipe instead of the top cooler, in conjunction with the larger cooler, the temps would be low enough that the top cooler deletion wouldn't be a problem.

 

[andybond]

If you delete the top cooler you will have to replace it with a blanking plate or the air pressure wont be right and you will reduce the efficiency of the rad.

I am not sure I would bother with a double cap intercooler either. I would be tempted to take both out and use a decent well made fmic

 

[DaveL485]

what he said. All that fecking about for minimal gain. Just go FMIC. Even a cheap one or retrofit from a scrappy would be far better.

 

[Deleted member 486]

If you delete the top cooler you will have to replace it with a blanking plate or the air pressure wont be right and you will reduce the efficiency of the rad.

I am not sure I would bother with a double cap intercooler either. I would be tempted to take both out and use a decent well made fmic

Reducing the efficiency isn't a massive issue since the compressor will be working more efficiently (not having to blow so hard to overcome the pressure drop) so there will be less heat to get rid of. And the backpressure would be lower since the wastegate could be open further due to not needing as much boost. Win all round.

Haha. Just kicking things about.
I know the collective wisdom is to go FMIC but I always like to think of other solutions. Plus I would prefer not to have to cut and shut things to get something to fit, and have the easy ability to go back to completely OE if wanted.

As I said, I have another idea in mind which would be my preferred route. Just spitting some thoughts out.

 

[r5gordini]

Note for me: now that I have gone FMIC and removed the top intercooler, I must blank it off! My FMIC is a bit big and so the bumper doesn't quite sit straight, but it'll do!

 

[andybond]

Reducing the efficiency isn't a massive issue since the compressor will be working more efficiently (not having to blow so hard to overcome the pressure drop) so there will be less heat to get rid of.

I was referring to the rad , not the inter-cooler.

 

[Deleted member 486]

I was referring to the rad , not the inter-cooler.

OK. Now I get you.
But doesn't the radiator already have a shrouded intake from the grill (no 17 below)? If so then the deletion of the top 'cooler won't make a difference?
Can't remember if the Turbos have this or not.

 

[andybond]

The top cooler will leave a hole , no ? Its been a while since I have had a 21T!

 

[Deleted member 486]

The top cooler will leave a hole , no ? Its been a while since I have had a 21T!

I am not sure. Looking at that diagram I would have said that the top cooler is shrouded by 11 & 12, and the main airflow is directed by 17, so it won't make any difference. But again, I haven't had a proper look in that area for years!

 

[DaveL485]

Scribbled out = not on Turbo.

 

[Deleted member 486]

Scribbled out = not on Turbo.

That makes more sense.