Pre Turbo Methanol injection. - Page 4 - 3000GT/Stealth International Message Center

TTGTOonSteroids · 12-16-2007, 12:12 PM

Quote:

Originally Posted by DoctorDex

If this works out well, I'm considering using either a second meth setup or a hobbs switch that would turn on the tiny pre-turbo injectors at/close to max boost.

One thing I'm curious about... Meth eats aluminum and our IC's are aluminum. Is this a reason to be concerned? Or is this risk, pretty much neglible so long as the meth is mixed with H20?

Well if u guys concerned about corrotion and are willing to use a secondar meth injection kit , why not just do a 30meth/70water mix u want to cool things off at the turbos anyway...

U can buy the pumps from shurflo and make your own kit http://www.shurflo.com/pages/home.html

GIL

Ondontii · 12-18-2007, 09:25 PM

I think meths problem is when it sits.

Your intake manifold is aluminum and big block motors that run 100% meth all have aluminum intakes for their carbs.

It also eats fuel lines because it absorbs water and rusts things out.

DoctorDex · 04-24-2008, 11:52 AM

Keithmac: Any progress?

keithmac · 04-24-2008, 03:05 PM

I got 1/2 way through making the jet adapters and figured they`d be too restictive in front of the 9b`s inlet,.

I went to plan B which was injecting after the MAF using a T in the bubble with 2 0.3mm jets (90cc/min to each turbo). I used 70% meth solution. This made little difference to the 6500 rpm WOT boost reading on the datalogger.

I then went to a 1mm jet each side of the T (500cc/min to each turbo) as these were what I had lying around and probably got a 1psi increase in boost at 6500rpm WOT. I deemed this of too little benefit to warrant any turbo blade pitting so removed the pre turbo jets.

Just after this I got a miracle buy on Ebay, 2 13G`s for £100 (approx $200), I`ve fitted the front and planning to do the back one soon. If these get close to 18psi at redline I`ll be happy enough at that for a while.

I think if you could make a system up to spray into the compressor point blank without restricting air flow you would see better gains, but the 9b intake is that small it would be difficult.

12-18-2007, 09:25 PM	#32 (permalink)
Ondontii SOHC you in the FACE Join Date: Feb 2005 Location: Seattle and SaltLake Trader Rating: (0)	Re: Pre Turbo Methanol injection. I think meths problem is when it sits. Your intake manifold is aluminum and big block motors that run 100% meth all have aluminum intakes for their carbs. It also eats fuel lines because it absorbs water and rusts things out. __________________ Brent 1992 Duster -13.0@104 - 8psi boost and slipping clutch -13.9@107.4 - 5psi - 6g72 3.13L "built" SOHC, Precision T67 P-trim, Tial 38mm open dump, 3" downpipe, 20x12x3" evo style intercooler, 7:1 compression, balanced, shot peened rods, heavily ported heads (+40% on flowbench), Ferrea Competition Plus +2 +1 stainless valves, Nielson Vintage 278 duration custom turbo cams, RPW Cam gears, Custom Ram Style short runner intake manifold, Walbro 255hp, 6*47# injectors, +0.096" Forged Venolias, Total Seal chrome gapless top rings, Fidandza Flywheel, Clutchnet 3 puck solid hub, OBX Helical LSD, Zeitronix wideband/EGT/Boost sensors, 100watt DevilsOwn Meth Kit. 1994 Spirit - 13.987@101.89 - 5psi- 6g72 SOHC, K27 Turbo

04-24-2008, 11:52 AM	#33 (permalink)
DoctorDex Forum Member Join Date: Jul 2005 Location: Edmonton, AB Drives: '91 VR4 Trader Rating: (13)	Re: Pre Turbo Methanol injection. Keithmac: Any progress? __________________ '91 VR4 - Modlist: DR650R turbos, Snow stage 2D alky kit, DSM SMICs, blowthrough ported LT1 MAS, Dejon Tool intakes & y-pipe, Blitz DSBC Spec R, HKS SSQV BOV, PTE 580cc injectors, Dual feed fuel system with Aeromotive FPR & filter, Hotwired Supra pump, ek2mfg plenum spacer, HKS DLI, MSD Wires, Apex'i S-AFC II, MAFTranslator, Turbobob ECU, Scanmaster III, LC-1 WBO2, ESP downpipe, Vac/EGR delete, Gutted precats and test pipe, Maximal solid mounts, 300m 18 spline output shaft, Centerforce Dual Friction clutch, RPS flywheel, GC coilover conversions with helper springs, Powerslot slotted rotors, Goodridge SS brake lines, Hawk pads (front), Stillen metal matrix pads (rear)

04-24-2008, 03:05 PM	#34 (permalink)
keithmac Forum Member Join Date: Sep 2006 Location: YORK / UK Trader Rating: (1)	Re: Pre Turbo Methanol injection. I got 1/2 way through making the jet adapters and figured they`d be too restictive in front of the 9b`s inlet,. I went to plan B which was injecting after the MAF using a T in the bubble with 2 0.3mm jets (90cc/min to each turbo). I used 70% meth solution. This made little difference to the 6500 rpm WOT boost reading on the datalogger. I then went to a 1mm jet each side of the T (500cc/min to each turbo) as these were what I had lying around and probably got a 1psi increase in boost at 6500rpm WOT. I deemed this of too little benefit to warrant any turbo blade pitting so removed the pre turbo jets. Just after this I got a miracle buy on Ebay, 2 13G`s for £100 (approx $200), I`ve fitted the front and planning to do the back one soon. If these get close to 18psi at redline I`ll be happy enough at that for a while. I think if you could make a system up to spray into the compressor point blank without restricting air flow you would see better gains, but the 9b intake is that small it would be difficult. __________________ JDM GTO TT, Emanage Blue - 450`s Hotwired Walbro - Gutted MAS - K&N Blitz SSBC - Aquamist Water Injection

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