Now this is purely hyperthetical (yet again) but I think that it's fair to say that the biggest issue that the zed has during any prolonged period on track, is cooling....

 

 

 

well I've just been looking at a few other builds (non zed); some in the UK and some in the US, across a wide variety of track focused builds and a lot of modifiers and tuners seem to be opting to re-locate the rad to the rear of the vehicle

 

 

 

in thoery it seems like a decent idea, and the number of pro spec cars that have adopted it as a setup proves that it does work as long as the right ducting and aero is in place to supply and extract the moving air efficiently

 

 

now here's my random question...with all of the above factored in (ie suitable aero/ducting), (on a zed) would it be possible to run a Koyo rad up front as per normal with a stock fan and then have a seconadary radiator rear mounted (in the boot) effectively acting as a secondary radiator configured to 'cool' the already 'cooled' water from the front radiator (with 1 or 2 electric fans mounted on the rear rad) before returning to the engine?

 

 

Just a thought....

You have too much time on your hands Pez....

 

My neighbour works for a specialist company building cooling systems for race cars and bikes.. Ill see what he thinks....

 

although I wont have a clue what hes telling me...lol

theory sounds right just whether the standard water pump can cope. Cooling is all about surface area so the more surface area you had to be cooled the more cooling could be done

i cant see much point tbh, yeah its hot under there but there has to be a point of it not making much difference obviously if you were planning on making an endurance racer or running serious serious hp for long times then maybe but in the mid range of power i think one large rad would be man enough. rear mounting is an option ive seen on many cars but im sure the main reason is durability rather than anything else. i think you should go with a large aftermarket rad maybe a coolant expansion part to allow you to carry more juice, and a good quality oil cooler. cant see ypou needing more than that tbh. maybe venting the bonnet if your really paranoid.

You have too much time on your hands Pez....

 

My neighbour works for a specialist company building cooling systems for race cars and bikes.. Ill see what he thinks....

 

although I wont have a clue what hes telling me...lol

 

 

 

That is so very true mate

 

13th Jan was my last paid day working for HRH so I now have the trouble of finding things to fill my day, so far two sessions of phys' and tinkering with the shortie' is keeping me from watching trash TV and all the best that Loose Women and Cash in the Attic can offer

 

 

but yeah, I'd be interested to see what what your mate says

 

More surface area = more cooling, so in thoery it's all good, though point taken ref the pump

i cant see much point tbh, yeah its hot under there but there has to be a point of it not making much difference obviously if you were planning on making an endurance racer or running serious serious hp for long times then maybe but in the mid range of power i think one large rad would be man enough. rear mounting is an option ive seen on many cars but im sure the main reason is durability rather than anything else. i think you should go with a large aftermarket rad maybe a coolant expansion part to allow you to carry more juice, and a good quality oil cooler. cant see ypou needing more than that tbh. maybe venting the bonnet if your really paranoid.

 

 

Always interested in points of view, the zed's currently running a Koyo rad (edit: I've just remembered I've got a Greddy expansion tank in the attic....cheeers for the reminder bud) and there's an ARC oil cooler sat there waiting to be fitted, same with the vented bonnet but I'm just curious I suppose

 

at the end of the day, this setup ^^^^ is gonna' be suitable for mid range power but it can't hurt to look at ways of improving cooling further, thereby future proofing, should I opt later on down the line to drop a forged lump in there with daft tubs and track it/drift it, with all the spare time on my hands