Super VXer
Hey Joe....you wanna argue radials vs. inlines.....vs. Vs? The P51's aero played a bigger part than its engine. You couldn't stay on boost long, before you grenaded the thing anyway. I've read a few pieces about using the alcohol as a cooling charge, instead of fuel...lots of potential there. P.S. P38's were blown till their head bolts trembled......same deal....you got it for 32 seconds.
Super VXer
Well, we went from 265 to 305 on the dyno this afternoon on a supercharged RX-8. The throttlbody on back tends to get so cold it sweats on the outside. Seriosly if you bring intake temps down that low in a high heat atmosphere shouldnt it in theary gain power and bringing total head and exaust temps down increasing durabuility under high stress applications.
Super VXer
I love the round engines moreso than the inlines, although there's a little fondness for the inverted inlines like the Bf-109's Benz and the Fi-156's Argus (okay, it's an inverted V). Even the Fw-190's BMW radial had methanol injection for brief high altitude boosting, as you mentioned for only brief periods before the excessive compression made things looser than intended. Never was a fan of the Merlins, got two here that roar around the pattern fairly regular (P51 and a Spit) but they're nothing compared to the occasional B-25 or A-26. Took my Dad up in a B-17 couple years back and I wouldn't trade that for two rides in a Lancaster!Originally Posted by Chopper
Basic physics and mechanics at work there. You're pulling a lot of air through a venturi at high velocity, and if you know anything about basic aviation as well that's a recipe for icing which is why most recip aircraft have carb heat. Show me a hot carburetor or throttle body and I'll show you an engine that isn't running.Well, we went from 265 to 305 on the dyno this afternoon on a supercharged RX-8. The throttlbody on back tends to get so cold it sweats on the outside.
Over 20 years of Isuzu enjoyment...
Super VXer
Well the A/I did drop the charge temps alot, 40 F. The intake and throttlebody are very hot because of underhood temps without the meth, if it wernt for the water to air IC the charge temps would be way to high. Im not trying to argue with ya. But with the testing ive done sofar ive gotten nothing but postive results, better then I expected, way better, come on -(40 F). We already ordered 10 more kits, 1 is going on the VX and im going to see if I can pull more power but even better, extend the life of a tank of gas. Ill tell ya how far down it pulls the air temps in N/A form, touch your plentum, that thing gets dam hot. Might unplug the FWD and strap it down to the dyno for giggles. On the air fuel reading stock at wide open throttle it was reading 12.5, with the meth/water injection we fattened the air/fuel all the way to 11.5 and it cleaned the plugs like it was runnung leaner and even the exaust cleaned up. Temps dropped all the way around, even the the engine water temps at full load. I also see it helping keep oil temps down but we wont now till more testing is finished. Weve only had this system working for 3 days. Im sure were going to see more to come.
Super VXer
Just talked to our test guy for the meth, he said he got 30 more miles out of his tank then he usualy gets, this is on a RX-8 with a supercharger kit with the meth tuned to come on under high load over 4000 RPM. He burned through 2 quarts 50/50 mix and ran out about 50 miles short of the end of the tank. Were installing a 5 gallon tank in his trunk next week and im going to work on a cruzing spray tune to see how well that works. Ill keep you posted, I might just install it this week on the VX. At the moment im getting 280 to 310 per tank on the highway.
Last edited by MoonRaker : 11/04/2007 at 01:27 AM Reason: adding content
Super VXer
Considering methanol is about $5 - $6 a quart ($20 - $30 a gallon) the mileage increase is more a step backward from the economy standpoint. Heck, at least in the VX you could put the DI drivetrain from an '04 Axiom or Rodeo in and get an increase in HP, torque and mileage plus a better tranny. LOL, if he'd stayed off meth he could've afforded another fill-up!
Knock yourself out Moonraker, I can get you some genuine ground plane isolators that should net you another 5HP by freeing up bound electron isotopes trapped in your chassis.
Looking forward to your Baja report.
Super VXer
Na, $2 a gallon, We buy it 55 gallons at a time and not at the track.
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