FL5 Overheated on Track

[siwelnosaj]

Hopefully on the side of the engine where the coolant exits. Maybe we're all good then!

Yeah I think with it's position it's basically getting the hottest spot on the head

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[siwelnosaj]

I want to share some pretty exciting news for the Type R track community! I have been working with PWR over the past couple of months and they/we will be releasing 2 versions of a triple pass radiator for the FL5 (and possibly the FK8 depending on demand).

One version will be the PWR version, and the other will be the WOT Performance by PWR version. I'm going to call it WOT spec for short.

In a general sense they will be very similar in design and concept, and both should perform extremely well. The triple pass design forces the coolant to travel along a longer path within the core, allowing it a longer period of time to cool down before traveling back towards the engine.

The WOT spec will have two primary differences:

1) More track oriented custom core spec: higher fin density, and special fin louver angle to further improve heat transfer.

2) Integrated bracket for optional transmission cooler: Built in provision on the back side of the radiator to easily add an optional transmission cooler to further reduce coolant temps by unburdening the coolant system (the OEM design uses the coolant system to cool trans fluid via the heat exchanger on the front of the transmission). The placement on the backside of the radiator is to minimize interference with the radiator and maximize efficiency.

The idea is that the PWR spec will be a massive step forward from the current track spec single pass that's available, and WOT spec will be the ultimate level stock replacement radiator available.

Both the PWR spec and WOT spec should be available in the coming weeks. Official pricing is still yet to be determined but should be in the $1400ish range (plus shipping) for the PWR spec, and $1600ish (plus shipping) for the WOT spec, with the transmission cooler add add on available for around $200.

The core of both specs will be 42mm (same as the current PWR track spec single pass radiator), and the other dimensions will also be similar with some slight changes to accommodate the different end tanks. Both specs will be a direct bolt on and will work with OEM fans and other components.

If you would like to pre-order either spec to be one of the first with this on your ride contact me. I will be the only vendor offering the WOT spec.

The picture in the post is a stock photo of the PWR track spec single pass radiator, currently there are no images yet available, but as soon as there are I will add them.

I recently hired someone to help me finish designing my website and it should be up and running here soon.

 

[west357]

Has anyone just removed the trans cooler/heater and then tracked the car in warm temperatures? Also how involved is the modification? My car is 100% stock under the hood and I’m contemplating doing this first. My local shop has recommended starting here (they support an extremely fast time attack Honda civic that laps 1:24s at Mid Ohio). So I do think they know what they are talking about.

 

[svvitch]

I don't know the temp trans fluid reaches on track. But plenty of Honda transmissions without coolers. I feel this was installed to warm the fluid in cold climates vs cooling the fluid on track.

Cold fluid probably reduces efficiency in cold climates and simply takes to long to warm up without the cooler/heater.

 

[siwelnosaj]

Has anyone just removed the trans cooler/heater and then tracked the car in warm temperatures? Also how involved is the modification? My car is 100% stock under the hood and I’m contemplating doing this first. My local shop has recommended starting here (they support an extremely fast time attack Honda civic that laps 1:24s at Mid Ohio). So I do think they know what they are talking about.

That could make sense on a time attack car but I would be worried about the trans fluid getting too hot and also not getting proper warm up with the method used. I can't say for sure but those would be my concerns.

With my kit you'll have 2 options for install. Bypassing the piece you are talking about which would unburden the coolant system completely, but it also means you won't have the OEM warm up design of using coolant to warm the trans fluid (really just depends on your climate and use plans)

The other would have the trans cooler tap into the OEM piece so that warm up still happens via coolant, but the supplemental cooler helps significantly with trans fluid temps and the coolant system doesn't have to carry the load.

For what it's worth the TCR cars also use a transmission cooler. Time attack makes sense cause it's 1 or maybe 2 hot laps usually and then the cool down. They usually don't even need much in the way of cooling mods

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