Results 1 to 11 of 11

Thread: big boost with pump gas & meth/H2O

  1. #1
    Hybrid booster
    Join Date
    Apr 2006
    Location
    Bushkill, PA
    Posts
    700

    big boost with pump gas & meth/H2O

    For those of you running high boost with pump gas & meth/H2O. What is your set up and how far have you pushed it. I'm asking because on my way to work this morning, I did a forth gear pull and sent the boost gauge past the 30 psi mark (I'm guessing 32 psi) Wide band showed 11.2 for the A/F. This was with a 5 GPH nozzle 2/3 meth, 1/3 water mix.

  2. #2
    Hybrid booster
    Join Date
    Apr 2006
    Location
    Bushkill, PA
    Posts
    700

    Re: big boost with pump gas & meth/H2O


  3. #3
    See me ride out of the sunset... Turbo Mopar Staff BadAssPerformance's Avatar
    Join Date
    Dec 2005
    Location
    Chicagoland!
    Posts
    27,310

    Re: big boost with pump gas & meth/H2O

    I'm not a meth user, but 11.2:1 sounds ok

    JT
    SDAC Director
    SDAC-Chicago President
    JOIN SDAC and your local Chapter TODAY! - SUPPORT the CLUB that supports YOUR HOBBY!
    87 Shelby Z - 10.50@141.66mph
    87 CSX #751 Clone - 12.88@102.88mph

    www.badassperformance.com
    Check out Turbo-Mopar Times!
    Submit your 1/4 mile times HERE!!

    Support SDAC! Join Today!
    "I'm not some pro athlete with a bajillion dollars, I'm just an every man"
    Note: The information and any images provided in this post are not for distribution outside this forum without the author's permission.

  4. #4
    Banned Turbo Mopar Contributor
    Join Date
    Dec 2005
    Location
    Windsor, Ont CANADA
    Posts
    3,805

    Re: big boost with pump gas & meth/H2O

    im running 26psi on PUMP gas no meth

  5. #5
    Supporting Member Turbo Mopar Contributor 2.216VTurbo's Avatar
    Join Date
    Dec 2005
    Location
    SoCal the OC
    Posts
    6,660

    Re: big boost with pump gas & meth/H2O

    Not running Meth on my cars but my neighbor with the 8 second Fast Fiat and I have been messing with it on his car the last 4 years. He runs SDS and 96PPH injectors. What we found by looking at the wideband AFR's is that once the meth comes on, the readings are totally unreliable We would get this huge lean 'spike' as soon as the meth started spraying for the first season we tried to adjust for it, IIRC we were up to 20GPH nozzles, the motor was laying down it was so over fueled but the AFR still showed lean. We kept cutting back the meth over the next two seasons (I think were at 12GPH nozzles) and the car got faster and faster. His doesn't come on till 22PSI, are you able to look at AFR's just before the spray starts? IMO, that's the only reliable way to read them.

    AJ (no More Alan) 84 Rampage RT TIII/568 Quaife 87 GLHS dealer optioned Red 16V Masi/568/Quaife
    90 Masi 16V White/Ginger/Black
    89 TC Masi 16V Red/Ginger/Black
    86 GLHS #110 RoadRace Built 89 CSX-VNT Recaro Car
    89 Turbo Mini 'Woody' 85 GLHT 'RedBox'
    2014 Explorer DD'r 3.5Twin Turbo Ecoboost AWD and 500HP
    My profile page has over 20,000 views, I'm somebody LOL

  6. #6
    Supporting Member Turbo Mopar Contributor Ondonti's Avatar
    Join Date
    Dec 2005
    Location
    Seattle
    Posts
    7,031

    Re: big boost with pump gas & meth/H2O

    stop using water, o2 sensor problem solved, 4 years wasted.

  7. #7
    ...if you know what I mean... Turbo Mopar Contributor csxtra's Avatar
    Join Date
    Dec 2005
    Location
    Cincinnati OH
    Posts
    791

    Re: big boost with pump gas & meth/H2O

    I was running pump gas/100% meth at the track for a while, but I ran into a detonation limit at around 32psi.

    This is on a 2.5, G-head (Menegon +1mm with enlarged combustion chamber for reduced knock sensitivity), T3/T4-Stage3-.63AR-50Trim-T4Cover, AlkyControl progressive system with 12gph nozzle, set to come on at 23psi, and ramping up to max pressure @29psi (where 3-bar map goes blind).
    My AFRs were always in the low to mid 11s. I was using the alky system as an "anti-knock kit".

    I tried cutting fuel and increasing meth (with a custom "alky" cal) at high boost, but the head kept lifting from detonation in the front (cometic HG, ARP studs @ 95lb-ft). My theory is that even though the combined effective knock resistance of the pump/meth is high, the pump gas is still autoigniting, causing the knock.

    Now it could be alky distribution issues (I'm running a single nozzle upstream of the throttlebody), but I'm not going to investigate further.

    From now on, I'll be running C16 with no alky for safety at "all of it" boost levels at the track, and pump gas and straight meth for 24-29psi on the street.

    Just another datapoint for your investigation, hope this helps.
    Warren Hall
    "My Name is Warren and my car is an alcoholic..."
    OVC - SDAC "Our Sh*t Rolls!"
    Cincinnati, OH
    87 CSX # 741
    317WHP - 380 WFt-Lbs (STD-5)
    12.460 @ 113.2 - Race Gas + Methanol Injection
    12.749 @ 109.84 - 91 octane + Methanol Injection (Still tuning...)
    "Illegitimi non carborundum."
    -General Joseph Stillwell
    TD Runlogger Page Has Moved...

  8. #8
    Supporting Member Turbo Mopar Contributor 2.216VTurbo's Avatar
    Join Date
    Dec 2005
    Location
    SoCal the OC
    Posts
    6,660

    Re: big boost with pump gas & meth/H2O

    Quote Originally Posted by Ondonti View Post
    stop using water, o2 sensor problem solved, 4 years wasted.
    No water anywhere near that motor, it's aircooled with strait Meth...

    AJ (no More Alan) 84 Rampage RT TIII/568 Quaife 87 GLHS dealer optioned Red 16V Masi/568/Quaife
    90 Masi 16V White/Ginger/Black
    89 TC Masi 16V Red/Ginger/Black
    86 GLHS #110 RoadRace Built 89 CSX-VNT Recaro Car
    89 Turbo Mini 'Woody' 85 GLHT 'RedBox'
    2014 Explorer DD'r 3.5Twin Turbo Ecoboost AWD and 500HP
    My profile page has over 20,000 views, I'm somebody LOL

  9. #9
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanman²'s Avatar
    Join Date
    Dec 2005
    Location
    Abbotsford, BC
    Posts
    44,167

    Re: big boost with pump gas & meth/H2O

    Quote Originally Posted by csxtra View Post


    From now on, I'll be running C16 with no alky for safety at "all of it" boost levels at the track, and pump gas and straight meth for 24-29psi on the street.

    Just another datapoint for your investigation, hope this helps.
    I agree, my Rotary guys are using boat loads of meth on there cars now-turbo 4's and 6's too, using real fuel injectors, these guys are dumping huge amounts in and still use race gas.

    I use alky for the street as i can run lower octane gas and keep a nice fat spark curve, but for the track, $$40-$100 for C16 is worth keeping my engine together. I know the AF reading changes but buy how much, I am not sure.

    I guess if you have the knock sensor hooked up to flash the CEL light and its not, your still safe.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  10. #10
    Hybrid booster
    Join Date
    Apr 2006
    Location
    Bushkill, PA
    Posts
    700

    Re: big boost with pump gas & meth/H2O

    Thanks for the input everyone. I had not planed on going above 30 psi, but this new to me turbo has a mind of it's own. In the lower gears it's fine but when I put a load on the motor it wants to shoot to the moon.

  11. #11
    Super Moderator Turbo Mopar Staff contraption22's Avatar
    Join Date
    Dec 2005
    Location
    Havertown, PA
    Posts
    9,432

    Re: big boost with pump gas & meth/H2O

    Ive run up to 30psi on pump using Blue Washer fluid on a 3gph nozzle.... but the car is faster on ravce gas with the injection off.
    Mike Marra
    1986 Plymouth Horizon GLMF "The Contraption" < entertaining sponsorship offers
    Project Log:
    http://www.turbo-mopar.com/forums/showthread.php?69708-The-Contraption-2013-14&highlight=

Similar Threads

  1. Turbonator SMEC codebase
    By ShelGame in forum ECU Code Repository
    Replies: 1972
    Last Post: 05-31-2018, 02:57 PM
  2. Another Holset TIII..
    By rx2mazda in forum Project Log
    Replies: 399
    Last Post: 02-01-2010, 12:43 AM
  3. Boost issues
    By moparbob in forum Turbos & Intercoolers!
    Replies: 6
    Last Post: 05-14-2009, 08:16 AM
  4. Any reason to not hook FPR up to boost only source?
    By SebringLX in forum Electrical & Fuel System
    Replies: 14
    Last Post: 04-15-2009, 09:16 AM
  5. Crazy boost!!!
    By Mopar_Nutz in forum Turbos & Intercoolers!
    Replies: 12
    Last Post: 07-20-2006, 02:30 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •