Chilling fuel

[78_torana]

Has anyone had experience in chilling the fuel supply for an increase in power? I know the fuel gets pretty warm in mine especially e85, the yt fuel rails are hot to touch in the bay after a bit of drive. I've heard of peltier coolers being used also I've found this on the net which uses co2
http://www.designengineering.com/catego ... ing-system

Please discuss even if it's non commodore related as I believe gains are to be had especially in my case where I have injectors in the blower to cool the intake charge

This applies to forced induction setup only not a stock v6 with a stereo, thanks

[78_torana]

CryO2: The Cool Way To Get More Power | Exhaust Header Wrap and Thermal Performance Products | Design Engineering, Inc.
Link here other one didn't work

[VK SL 3800]

Ive never really looked into it but maybe one of maces supercharger insulators could also help keep the lines cooler by reducing heat from the supercharger housing?
I dont think it makes a huge difference until your scraping for every last KW you can get, i would like to see some dyno results to see what sort of difference it really would make.

[Dr HaxZaw]

yeah i've had some experience with peltier coolers and they were terrible for what we wanted to achieve... did manage to get a 20 degree drop with em so they might do the trick

[78_torana]

20 degrees is a fair drop, i already run a mace 25mm insulator mainly for clearance, it helps a little. Do you have any pics of the peltier setup or could you draw a simple diagram? Also how much would one be to suit the application ? I've looked around on a few sites and they seem fairly cheap but I dont know how big of u unit u would use? Cheers, Hayden

[VR38]

I am of the belief that there is a specific heat range where each type of fuel will release the most energy, I don't have the resources for expansive testing but I can tell you it is fact that if it is too cool or too hot is bad for performance, this is why fuel companies mix differing brews for summer and winter climates.

[ephect]

20deg is still a decent temp decrease.. Especially when talking about under bonnet

[Dr HaxZaw]

20deg is still a decent temp decrease.. Especially when talking about under bonnet

We were running them to try and create a cloud chamber so they were pretty much lined out like tiles... i really dunno how you'd go about making them to suit fuel lines though

[Jonah 101]

My dirt bike always went harder with cooler fuel.

I believe fuel temp effects octane.

[VR38]

My dirt bike always went harder with cooler fuel.

I believe fuel temp effects octane.

The temp affects how good the fuel vaporises.

[showbags]

Your really only going to get any Benifit if you currently have issues with fuel vaporizing in the fuel rail before the injectors.

[Drawnnite]

just to put it out there.
the colder it is the more dense right?

would the density have an effect that would make it worthwhile?

and could you somehow plumb some sort of bar tap chilling lines into the fuel system?
forgotten what it is... but maybe its an idea to look at?

[ephect]

U will most likely need to buy, make fuel rails to suit. Because they are flat, u will need to locate a fuel rail with a flat side that u can mate the pelzier tiles to it. Like a heat sink on a transistor. This will really be the best way to do it, plus the heat will only aid in the cooling of the other side.

[wraith]

What a waste of time. I'm sure Holden engineers would of went through and figured all this out when they were designing it.

[VR38]

just to put it out there.
the colder it is the more dense right?

No. The air is more dense the cooler it is.
The cooler the fuel is the harder it is to vaporise.
As I said before, this is the reason fuel companies supply summer and winter mixes.

[VR38]

You would, IMO, be better off running the fuel warm but not hot so you suffering vapour lock.
Anything cooler than the engine it's self would work so you don't get condensation.
Again this would depend on the type and blend of fuel as some fuels work better cooled such as methanol and alcohol.

[78_torana]

Yeah I am running e85 and bp98 tunes, I'm thinking of using my old tranny cooler with a couple of CPU fans on it wired in series with my thermos so I can switch them on whenever. Holden engineers wernt thinking about it I would say because they don't consider aftermarket performance. I'm gonna try it on my l67 current has 320hp at the treads and uncooled so heat in the bay is an issue hence why I asked.

[VR38]

Would be great to hear the results. I suppose an increase in Hp would be good but to make any real comparisons you would have to record engine temp, fuel temp, manifold (induction) temp and ambient temperature.

[78_torana]

I'm always up for a bit of r&d. Already dropped intake temps by 10-15 by fitting injectors In the blower. I've got a tot cooler kit on the way too. Shud make some good numbers and improve track times a fair bit

[one_and_only2004]

Yeah I am running e85 and bp98 tunes, I'm thinking of using my old tranny cooler with a couple of CPU fans on it wired in series with my thermos so I can switch them on whenever. Holden engineers wernt thinking about it I would say because they don't consider aftermarket performance. I'm gonna try it on my l67 current has 320hp at the treads and uncooled so heat in the bay is an issue hence why I asked.

So where is this cooler going to go? regardless of how you do this the fuel is still going to heat up when it hits the fuel rails. You could maybe glue a heap of heatsinks like the ones found on VZ power steering coolers to the rails but I doubt you're going to achieve any noticeable temperature drop without CO2 or something like that.

[78_torana]

I might get the rails hpc coated

[one_and_only2004]

just re-rout the air conditioner to blow on your fuel rails.

[Munz]

surely the fuel is moving quick enough through the rails and not getting too hot


50/50 water/methanol mix FTW

[78_torana]

Torana. Aircon ? Lol

[VR38]

Torana. Aircon ? Lol

That would do a good job of heating haha.