Meth vs nitrous on a roots
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The Lysholm twinscrew is not derived from the Roots. They are a totally different animal. The twinscrews are air movers that actually have some internal compression while the Roots are simply air movers. That's what makes the twinscrews more efficient (a simplified description). You made a good choice.
Jim
Jim
Ill look into plumbing a meth kit into the bottom of the KB
Teching In
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It does work with the roots in cooling the air temps, but theres the factor of the pump failing which has happend before under a good amount of boost nitrous would be a safer way.
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Then have the nitrous and meth hit on the side. Nitrous cant engage unless the meth pump engages. Failsafe setup.
And I looked at the cost difference and an LSX block with 4.125 bore seems likely to handle the power better
On The Tree
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From: St. Petersburg, Florida
Different animals all together.
Meth will only cool air going into the blower not coming out of it. Every PSi boost is approx 11 degree's. 10 PSI is 110 degree's above ambient. So if its 100 degree's and you run 10 PSI you have 210 coming out of the blower. If you shoot meth pre throttle, its temperature drops to 70 degree's and out let temps drops from 210 to 180. See where this is going. The bonus is if you run straight meth, you get the octane bump from running it. Like throwing 110 in your tank. this bump and how much depends on how much you spray. So if you spray .1 ounce per second or spray 2 ounces per second.. the 2 ounce per second yields a whole lot higher octane.
Nitrous is a power adder. It does not reduce outlet temps on the blower either. It adds air basically.
You want cool IAT's.. place the nozzles after blower. But not all apps is this possible. Or needed.
Most roots style blowers motors that use meth do it for a bump in octane and help with heat soak. So instead of running 14 degree's on pump gas, you run 18-20 and a few more PSI boost and not hit the knock sensor. This is how it makes power.
HTH
Meth will only cool air going into the blower not coming out of it. Every PSi boost is approx 11 degree's. 10 PSI is 110 degree's above ambient. So if its 100 degree's and you run 10 PSI you have 210 coming out of the blower. If you shoot meth pre throttle, its temperature drops to 70 degree's and out let temps drops from 210 to 180. See where this is going. The bonus is if you run straight meth, you get the octane bump from running it. Like throwing 110 in your tank. this bump and how much depends on how much you spray. So if you spray .1 ounce per second or spray 2 ounces per second.. the 2 ounce per second yields a whole lot higher octane.
Nitrous is a power adder. It does not reduce outlet temps on the blower either. It adds air basically.
You want cool IAT's.. place the nozzles after blower. But not all apps is this possible. Or needed.
Most roots style blowers motors that use meth do it for a bump in octane and help with heat soak. So instead of running 14 degree's on pump gas, you run 18-20 and a few more PSI boost and not hit the knock sensor. This is how it makes power.
HTH
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Thats why larger HP shots of nitrous are done using race fuel. boost or not.
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What is a rule of thumb on boost for octane?
say 8.0-8.5 cr what psi can I run at 13-15* timing?
Im hoping for 20-22psi then when I really want to win hit it with meth and nitrous.
say 8.0-8.5 cr what psi can I run at 13-15* timing?
Im hoping for 20-22psi then when I really want to win hit it with meth and nitrous.
On The Tree
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Nitrous is a power adder.
Ssee the point is you run 20 PSI boost. Run the meth and bump the timing to 20 degree's. Easy. Thats how you make power with meth.
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I want BOTH meth and nitrous for the extra bump. Add 1-2* timing and shoot a 50-75shot and get 100-200hp jump
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Verdad Gallardo On The Tree
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From: St. Petersburg, Florida
Yyou wont be able and keep stable pressure with a meth system. Easier to make a standalone fuel setup for nitrous. Small fuel cell, walbro 255, return line, use C16.. and watch your bottle pressure. Problem is pump, regulator, methanol, fittings, etc. Unless you washout your meth system every week.
Meth is for 99% boosted applications. On NA applications it wont work.. well waste your money. Only if you run really high compression will meth work on an NA setup. Where you can barely run on pump gas.. the meth will allow higher timing and power. Example 12:1 motor
Teching In
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From: Bremerton, WA
My brother tried a snow performance kit and a cheater kit on his roots blower. The car obviously went faster on the 175 shot. IAT's went down with the N20. So did EGT's. We left the water/meth on for street use, and switched to nitrous at the track.
