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-   -   Fuel strategy for endurance racing (https://www.miataturbo.net/race-prep-75/fuel-strategy-endurance-racing-63760/)

emilio700 03-08-2012 06:42 PM


Originally Posted by bellwilliam (Post 845496)
next time. during one of the track day. drive the car till fuel light comes on (if you have a NB), start your count. next drive till car hiccups...write down how many laps that was. then drive till the car stutters so bad that you are losing 5+ seconds. write that down.

my point is, ignore the fuel level gauge...it really is irrelevant...

+1

What matters is how far you can go at race speed. Find out. Record it carefully. Keep track of distance traveled on track during race. OEM dash gauge is useless.

Bagel 03-08-2012 10:52 PM

Dang, This discussion is still going on....Good to know that no one else knows our secret:fawk:

bellwilliam 03-09-2012 12:15 AM


Originally Posted by Bagel (Post 845636)
Dang, This discussion is still going on....Good to know that no one else knows our secret:fawk:

Let me take a guess. Run a bigger fuel cell ? Chump allow stock capacity +2 gallons (more depending on tank size, but for Miata it is 2).

Bagel 03-09-2012 12:17 AM


Originally Posted by bellwilliam (Post 845656)
Let me take a guess. Run a bigger fuel cell ? Chump allow stock capacity +2 gallons (more depending on tank size, but for Miata it is 2).

Nope, we run a completely stock fuel tank...for that matter, a completely stock car.

IcantDo55 03-09-2012 01:21 PM

Enlighten us oh wise one.

blaen99 03-09-2012 01:30 PM

1. Hide aftermarket ECU (I.e. megasquirt) in stock ECU box.
2. Lean out
3. ???
4. Profit

Stein 03-09-2012 03:59 PM

Just put one of those magnet pill things around the fuel line. Supposed to increase mileage by up to 30%. That should do it.

rharris19 03-09-2012 04:14 PM


Originally Posted by bellwilliam (Post 845496)
next time. during one of the track day. drive the car till fuel light comes on (if you have a NB), start your count. next drive till car hiccups...write down how many laps that was. then drive till the car stutters so bad that you are losing 5+ seconds. write that down.

my point is, ignore the fuel level gauge...it really is irrelevant...

That is what I was looking for.



Originally Posted by Stein (Post 845924)
Just put one of those magnet pill things around the fuel line. Supposed to increase mileage by up to 30%. That should do it.

Combine that with a Tornado and I am golden.

Bagel 03-09-2012 10:24 PM


Originally Posted by IcantDo55 (Post 845850)
Enlighten us oh wise one.

Well I would, but mr.harris is one of our competitors.

triple88a 03-09-2012 11:29 PM

2 Attachment(s)

Originally Posted by rharris19 (Post 840423)
That's too lean for my liking in an endurance car. If I could find a way to stay around 12.5 on the oem ecu I would be golden.

You dont have to use that big of a crystal...
The other way to do it is to get the ecu reflashed.


Originally Posted by IcantDo55 (Post 845850)
Enlighten us oh wise one.

https://www.miataturbo.net/attachmen...ine=1331353986

and and and and

https://www.miataturbo.net/attachmen...ine=1331353986


LIKE A BAUSSS

guzerone 03-10-2012 01:16 PM

We run a 95 325i in Chump.
With the stock diff (3.46 gears), we can go 2 hours. We changed the rear end to a 3.73 from the junkyard and the car started sputtering through turn 4+5 in Portland after 1:20h.
While it was the perfect ration for that track (just hit redline at the end of the straight), not being able to run the full 2 h cost us.

So slightly lower gearing might get you through 2h.

hustler 03-11-2012 04:01 PM


Originally Posted by Bagel (Post 839377)
I have some secrets that I just cant tell you:hustler:

Tell him your secrets or you will be banned. Severely.

Bagel 03-11-2012 09:55 PM


Originally Posted by hustler (Post 846594)
Tell him your secrets or you will be banned. Severely.

Let the banning commence! :jerkit:

miata_racer 03-12-2012 12:44 AM

We calculated it the easy and safe way....fill the tank to the brim....run like hell for 20 min straight...flat out 7000rpm shifts...etc....

fill with fuel...

do maths

assume the shitty miata will only run down to 10-11 gallons...

The run it till it hicups hard has run us out of fuel on track before...which sucks in the summer.



Originally Posted by emilio700 (Post 845531)
+1

What matters is how far you can go at race speed. Find out. Record it carefully. Keep track of distance traveled on track during race. OEM dash gauge is useless.


miata_racer 03-12-2012 12:47 AM

The secret is Eric and John are cheatin turds who have a team full of drivers who are better than everyone.

BOOOOOOO!!! :p


Originally Posted by Bagel (Post 846746)
Let the banning commence! :jerkit:


Bagel 03-12-2012 10:49 AM


Originally Posted by miata_racer (Post 846806)
The secret is Eric and John are cheatin turds who have a team full of drivers who are better than everyone.

BOOOOOOO!!! :p

I like your thinking David.:idea:

Except for the fact that we have NEVER truly cheated a Lemons/Chump Car event ever.

hustler 03-12-2012 10:54 AM

1 Attachment(s)

Originally Posted by miata_racer (Post 846803)
We calculated it the easy and safe way....fill the tank to the brim....run like hell for 20 min straight...flat out 7000rpm shifts...etc....

fill with fuel...

do maths

assume the shitty miata will only run down to 10-11 gallons...

The run it till it hicups hard has run us out of fuel on track before...which sucks in the summer.

Weigh-In-Motion?


Originally Posted by miata_racer (Post 846806)
The secret is Eric and John are cheatin turds who have a team full of drivers who are better than everyone.

BOOOOOOO!!! :p

Attachment 240060

miata_racer 03-13-2012 10:27 PM

Your cheat IS the better drivers....we're screwed. The cheatin car i hear (though legal by the rules) is the SHO motor 2nd gen RX7


Originally Posted by Bagel (Post 846917)
I like your thinking David.:idea:

Except for the fact that we have NEVER truly cheated a Lemons/Chump Car event ever.



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