Unleaded, lead went by the way side here in 1986...
I think the equivelant to Shell V-max would be what is marketed as " Shell Optimax" here, and it is 98RON, regular is 91.
I only ever run mine on 98RON.

Have just installed a 140l (37gal) baffled fuel bladder to fit the fuel in, as was getting fuel starvation under full accel, also the range wasn't that great with the stock 68l (18gal) tank, getting less than 10mpg.

What do you get in terms of mileage?

 

I concur! Very well done, I have learned much.

 

I drive mainly on the highway to work, 62.5 miles each way at 70-75 MPH. A solid 12.3 MPG! I have several long runs at 60MPH or less at which I get a whopping 15.5 MPG.

98RON huh. Best we can get is 93, which is R+M/2, which I still think is way below 98.

 

hkiefus,
What kind of mpg have you seen? I know a new toy is hard not to play with, and power is a wonderful "toy" Just yesterday, a freind and I were talking about gas mileage in his Mach 1 and I made the statement, "drive a 79 4wd, 460 and a 4 barrel and see what your mileage is. Ofcourse, its better if you don't get in the 4 barrel, but who can own a 460 with 4V and not 'get in it'?"

Anyway, when not playing with it and killing GT's, have you seen any change in mileage?

 

I think I address that in the post above yours. Funny thing is I've had a 79 460 F250 too. A solid 8.5 MPG; uphill, downhill, load, unloaded. I wiped a cam lobe once, about 250 miles from home. Ran fine on seven cylinders and got the best mileage ever, just a hair under 10.

But to answer your specific question, yes there is a reduction in mileage of about 1.3 MPG. Of ALL the literature that Kenne Bell supplies, this is the ONLY thing I have not found to be true. They explicitly say that there should be no reduction in mileage. I didn't buy this of course as spinning the SC takes some energy. I've run in a number of configurations for my 'personal' testing and with the SC bypassed and the belt off I gain back almost all of the lost mileage.

 

I know this is a little late, but I don't entirely agree with that.

If we're talking about a Powedyne BD-11 or KB 1.5L then I can agree. Both compressors don't respond too well with smaller pulleys. They can actually consume almost all of the added power they make with a smaller pulley.

I highly doubt that a Novi, SQ or P-1 can be "maxed-out" on a stock/street driven truck. At 1/2 - 3/4 throttle and lower RPM's, my boost gauge will hang around 4psi. I see about 14psi through a Ford Powerstroke intercooler, and the blower is only spinning a little over 43,000 RPM's. The max for this unit is 53,000rpm, 20psi and 1000cfm. There is still more left in it, but I'd like my stock rotating assembly to last a while.

 

hkiefus,
I thought I might add, I saw a roots type supercharger on a 5.4 mod motor that was intercooled, can't find the link again though

Essentially what they had was another radiator mounted in the lower part of the grill, with a small water pump. Water was pumped through water jackets, which surrounded and passed through the intake manifold.
Was an impressive set up, they quoted that power went up 9%, and torque went up 13%, they said greater improvements could be had at higher speeds (greater airflow through "intercooler"), as they said the fan which was used to cool it on the dyno was providing insufficient airflow.

 

I suppose for kicks I could fab a custom intake (I really like the way the Lightnings do it) but I think I'm just going to spray Methanol-Water using a high side pressure from the SC to pressurize a bottle to shoot mixture into the low side ahead of the TB. It will do fine for me.

P.S. I just had a peek at your Falcon. Nice ride, just one more reason to like my friends from down under. Of course for me, the original (XB was it?) with a working Wieand; ever since I saw the movie almost 30 years ago...

 

The meth/water should do quite well to cool it.
I have a friend with a Nissan Skyline GTR (turbocharged, but the principle is the same) who bypasses the intercooler and injects Liquid Nitrogen directly into the intake manifold when drag racing, the only problem is the injectors have to run at quite a high pressure (they are off a Mercedes CDI diesel) to overcome the boost, it adds quite a lot of power though, and reduces the EGT's, as he also uses nitrous oxide when racing.

And yeah Mad Max's ride was an XB Falcon GT, I have always wanted an XB coupe with a clutch operated blower ever since I saw that movie.

 

I wouldn't use methanol for that its very corrosive on aluminum....Alls it does is blow the flame out anyways. You can run more boost but so what same hp...did it 15 years ago on a turbo motor cycle running 20 psi boost..

 

I think his block and heads should be cast iron. It does kind of reduce the flame, but the cooler intake more than compensates.
It is far more effective on Turbocharged cars where it is a balancing act of increasing internal combustion temps, but reducing EGT's...

A turbocharged motorcycle running 20psi boost
I have a friend running 6psi on a Hayabusa, and I though he was nuts...

 

I was thinking manifold and throttle body. Honda 500 cc made in 82 stock 17 psi @ 80 hp...Still have it...

 

Good point, my manifold is magnesium, not sure what my throttle body is made out of (quickly runs outside to check)... nope, they look aluminium .
I thought aluminium was corrosive resistant, and given that meth doesn't have any polarity (if I remember correctly from chem) how does it corrode Al?

Oh well, I am not going to run meth anyway - already gone through one transmission, a diff, and 2 driveshafts as it is...

Correction, on the boost I quoted for the Hayabusa, its actually 9psi (and it makes 270RWhp, the thing is nuts)
By the way you mentioned it, the Honda ran a turbo standard??? That is amazing...

 

Ya those bikes are amazing beasts. There's a video out with 3 or 4 bikes with a stealth viper or whatever running down the road..

Dick

 

Aluminum is corrosion resistant because it almost immediately forms a layer of aluminum oxide, which seals the aluminum underneath tightly, and the corrosion process stops.

This is why when you weld aluminum, you have to brush the weld area so much to get the aluminum oxide off.

Methanol however eats through aluminum oxide, removing the natural protective layer, then the airflow over the "nude" aluminum will help form more aluminum oxide which again, protects the aluminum from further corrosion.

Though, aluminum parts are only so thick and eventually you will run out of aluminum to be "eaten".