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Registered
Join Date: Aug 2006
Location: Cincinnati, Ohio
Posts: 1,019
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There are issues with both...
Methanol: What happens when the bottle runs out? You tune the car for max power with this octane increaser and water spray combo...then under boost the bottle runs dry. Add for icing on the cake, but as a primary source for charge air cooling it is an inherently bad idea. Ethanol: It has a high octane rating out of the pump (105), but you have to spray 30% more fuel to match the BTU of Gasoline. That requires a larger pump and possibly lines and a very big injector. In addition, it is hard to find in most places. One exception would be Minnesota. We have it here in Cincinnati, but only at like 4 stations.
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Kuhn Performance Technologies, LLC Big Gun: 1988 928S4 Twin Turbo, 5-SPD/LSD 572 RWHP, 579 RW ft-lbs, 12 psig manifold pressure. Stock Internals, 93 octane. Little Gun: 1981 928 Competition Package Twin Turbo, 375 RWHP, 415 RW ft-lbs, 10psig manifold pressure. Nikasil Block, JE2618 Pistons, 93 octane. |
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11-06-2008, 03:39 AM
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RicerSchnitzzzle
Join Date: Jun 2008
Posts: 385
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THat's why I mentioned it, however even a 3 gallon tank up front with Meth will last a long time. Not likely you'd empty it on one outing. The tuner guys run EVO's all the time on meth at 600rwhp out of a tiny 4 cylinder with high compression.
Keeping the tank of meth full may seem like a pain, but it's the price for more power. And in our cars where aftermarket parts are rare, it's a much cheaper alternative. And honestly, it's like toping off windshield washer fluid prior to a long trip. Pretty easy. Worst case when your gauge tells you, you're low on Meth, you turn off the pump and switch the MAP to a lower boost, turn down the turbo and you're back to where you would be with out it. Most big boost ricers run dual MAPs for dual boost levels. And lets be honest, higher boost is addictive, but at top levels most cars are not drivable. It's seldom you would want to go that high, but when needed, a flick a couple switches and you're on high boost and meth injection. Kind of like my using nitrous, except your baseline HP would be a lot higher. My N2O gets used seldom on the street, very seldom. I use it most at Montgomery Motor Speedway and Holt 1/4 mile tracks.
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'81 Euro 'S' 928 5-Speed 5.0L Hybrid "Ricerschnitzzzle" Wish list: RollBar, New Helmet and driving lessons  Wishes Done: Body kit, seats, No cat, Headers, X, Afterburners, 3" exhaust, short shifter , 17" TT Rims, 250HP N2O, MSD ignition w/retard+rev limit, MSD billet distributor, Accel Coil. 5.0L block, ported heads, JE race springs + .503 "S+" cams Last edited by N2O-SHARK; 11-06-2008 at 06:31 AM.. |
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11-06-2008, 06:28 AM
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Registered
Join Date: Oct 2008
Posts: 135
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Quote:
Put THIS pump gas in (I have two stations - one south, one north, and I can order it as well) and boost is limited to the structure of the engine itself. And since, with proper tuning (most important), I know that 30psi is perfectly safe on the stock block with forged pistons - WITH PUMP GAS, I know that ethanol would be even safer, and create even more power. Yes, you need -10 lines to and from, and very large pump. Also, a large non-plastic tank. I am doing a tank in Aluminum, and will coat it. FYI |
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11-06-2008, 10:30 AM
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Registered
Join Date: Oct 2008
Posts: 135
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N20 - the reason I said ethanol is because when designed into the system as a whole, unless you run out of gas, you don't run out of "ethanol" and it can allow much more power-prodcuing parameters for the entire build.
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11-06-2008, 10:32 AM
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