RE: Time For Tea? Hennessey's 263mph Ford GT...

[frogy6]

Big gains to be gotten from being tuned to race fuel isn't there?

[CraigyMc]

frogy6 said:

Big gains to be gotten from being tuned to race fuel isn't there?

Cooling isn't much of a factor given the distance these guys are running, so the only real problems are boost levels (detonation) - cured by ever higher octane fuels, and a pretty solid transmission -- which the GT seems to have.

How long before one of them is using 150 octane to get up near 5 bar of boost?

C

[Auxois]

The world record was set PRIOR to this event @ 283.232 mph, also in a Ford GT (with much nicer track conditions than the stty Texas mile:



http://www.performancepowerracing.com/portfolio-vi...

Edited by Auxois on Tuesday 30th October 20:06

[405dogvan]

The Ford GT is still - in my eyes - the greatest supercar ever made...

It's not only drop-dead gorgeous to look at, it not only sounds fantastic but it appears to be the tuner's ultimate dream with people achieving power outputs which make a Veyron look staid...

and then they made the GTX1 which had even better looks, could be accessed without contortionism and had EVER MORE POWAH

Everyone else packed-up their design tools and went home at that point...

[Krikkit]

405dogvan said:

The Ford GT is still - in my eyes - the greatest supercar ever made...

It's not only drop-dead gorgeous to look at, it not only sounds fantastic but it appears to be the tuner's ultimate dream with people achieving power outputs which make a Veyron look staid...

and then they made the GTX1 which had even better looks, could be accessed without contortionism and had EVER MORE POWAH

Everyone else packed-up their design tools and went home at that point...

That's a big claim! It's pretty, I won't deny.

I reckon that if the tuners had the money and time to get to grips with a Veyron I can imagine they'd screw rather larger power from it - but it's rather pricey to lunch a couple of engines with 117 octane and mental boost.

[exocet ape]

Auxois said:

The world record was set PRIOR to this event @ 283.232 mph, also in a Ford GT (with much nicer track conditions than the stty Texas mile:



http://www.performancepowerracing.com/portfolio-vi...

Edited by Auxois on Tuesday 30th October 20:06

So that means Hennessey has a Texas 'world record'? This makes the World Series look positively cosmopolitan!

[chuntington101]

CraigyMc said:

Cooling isn't much of a factor given the distance these guys are running, so the only real problems are boost levels (detonation) - cured by ever higher octane fuels, and a pretty solid transmission -- which the GT seems to have.

How long before one of them is using 150 octane to get up near 5 bar of boost?

C

Cooling is a massive factor! The team use a massive (much bigger than the stock GT) chargecooler mounted directly above the intake manifold, which is a comtom joby ofering muvh better flow than stock. Through this they pass ice water throgug it. One of the engineers form accurfab was on here and sttred that the intake temps are sub ambient for the full mile run. THis technique is tried and tested in both mile and 1/4 mile racing.

Think the hgihest octane you can get for fuel is about 120 these days. And its getting these engines to hold together that the issue. Think this motor is making about 1600bhp (again form what the accurfab engineer said on here). They might have eaked a little more power out of it now. next step would be to convert to methanol and fill the block with block filler (coling on for the heads). think there aere drag racing cars using the same modular Ford engine making around 2000bhp. however even with the extra power its going to be hard getting it to the ground. you can already hear in the vid its not until well into 3rd before full power is down.

Chris.

[pagani1]

New V8 in next year's Corvette promises much too. Imagine a ZR1 spec on that.

[scubadude]

Auxois said:

The world record was set PRIOR to this event @ 283.232 mph, also in a Ford GT (with much nicer track conditions than the stty Texas mile:


http://www.performancepowerracing.com/portfolio-vi...

Edited by Auxois on Tuesday 30th October 20:06

Was going to post the same link (shockingly saw this in the Daily Mail yesterday!)

283 isn't far off the magic 300, seems perfectly doable if you throw enough money at the car.

[CraigyMc]

chuntington101 said:

Cooling is a massive factor!

I meant in terms of radiators for coolant and so on - drag engines quite often don't even have water passages because they are adiabatically cooled. I take the point about cooling the charge down.

On the point of fuel - 115/145 avgas is still made for things like the reno air races. It's not impossible to get hold of.

ETA: linkie: http://www.vpracingfuels.com/page469679.html

C

Edited by CraigyMc on Wednesday 31st October 12:40

[WCZ]

did he release a parachute?

[slinky]

It wasn't an Accufab tuner that commented on here, it was Shane Tecklenburg, the MoTeC tuner on the car and also RedVictor3.. The GT would have gone quicker but the lambda wires melted on the headers and massively leaned out one bank causing engine damage..

[soad]

WCZ said:

did he release a parachute?

I thought so (34seconds in the video).

[chuntington101]

slinky said:

It wasn't an Accufab tuner that commented on here, it was Shane Tecklenburg, the MoTeC tuner on the car and also RedVictor3.. The GT would have gone quicker but the lambda wires melted on the headers and massively leaned out one bank causing engine damage..

yeah i think that was the guy. very nice chap from what he put on here!

[slinky]

chuntington101 said:

yeah i think that was the guy. very nice chap from what he put on here!

It was, I asked him to come and comment.. and yes, he's a lovely chap..

[chuntington101]

CraigyMc said:

I meant in terms of radiators for coolant and so on - drag engines quite often don't even have water passages because they are adiabatically cooled. I take the point about cooling the charge down.

On the point of fuel - 115/145 avgas is still made for things like the reno air races. It's not impossible to get hold of.

ETA: linkie: http://www.vpracingfuels.com/page469679.html

C

Yeah i hear you can still get avgas. but i thought it was for restricted use due to the chemical content of the fuel (lead based? could be wrong).

Using methanol will take the engine futher than the internals / block can take. Plus as meth burns cool it reduces the need / stress on the engine cooling system.

On cooling mile event are MUCH harder than 1/4 form what i have heard. You are WOT for probably twice the time and at high rpm for extended periods. This puts a lot more heat in the system than what happens in the 1/4mile.

Chris.

[rgw2012]

This just leaves me a bit unexcited I'm afraid. To call something road legal when it is obviously something that would never be a usable road vehicle is just playing with rules. This is a race tuned car that would be undriveable under everyday conditions, so other than rule compliance there is no point in calling it a road legal vehicle. It has lights and indicators etc - whoopee!

I appreciate the tuning effort and achievement to a certain extent but when you have the world of top fuel pro stock, funny cars and dragsters doing 320mph plus in a quarter of the distance, this just pales into the back stories of what is being achieved at the pinnacle of combustion engine achievements.

Each to their own though and I'm glad people enjoy this and strive to push boundaries. Just wanted to have some iced cake along with my tea rather than the plain wafer that got served up!

[CraigyMc]

chuntington101 said:

CraigyMc said:

I meant in terms of radiators for coolant and so on - drag engines quite often don't even have water passages because they are adiabatically cooled. I take the point about cooling the charge down.

On the point of fuel - 115/145 avgas is still made for things like the reno air races. It's not impossible to get hold of.

ETA: linkie: http://www.vpracingfuels.com/page469679.html

C

Yeah i hear you can still get avgas. but i thought it was for restricted use due to the chemical content of the fuel (lead based? could be wrong).

Using methanol will take the engine futher than the internals / block can take. Plus as meth burns cool it reduces the need / stress on the engine cooling system.

On cooling mile event are MUCH harder than 1/4 form what i have heard. You are WOT for probably twice the time and at high rpm for extended periods. This puts a lot more heat in the system than what happens in the 1/4mile.

Chris.

Yep - it's leaded, and isn't for road use - but of course the texas mile isn't done on a road...

[frogy6]

I agree, it's not really road legal. If ya can't pop through town to the shops and back its not road legal.

And cooling is a huge issue. Even 1/4 mile runs with high boost produce huge heat, most can do 2, maybe 3 runs before a long cool down.

And on the veyronI'd say you could do 2000hp no problem. Difference between this and the veyron is the veryon 100k miles later will be the exact same. This will be after about 15 rebuilds.

Edited by frogy6 on Wednesday 31st October 17:25

[greggy50]

With the right gearing surely this could run up to over 300mph if it can hit over 280mph in a mile?

Mighty impressive eitherway however