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Old 02-15-2012, 01:32 PM   #12 (permalink)
oil pan 4
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Location: NewMexico (USA)
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Sub - '84 Chevy Diesel Suburban C10
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Lately I am putting together one of the simplest and most consistant and tuneable water methanol injection systems any one has ever seen.

I have a steady local source of 80 proof water methanol. I ran some numbers and figured out that for constant spary I want no more than 3gph and no more than 10% alcohol.
DIY Water Mist Injection system install, w/pics (MPG Boost Project) - Page 27 - Diesel Place : Chevrolet and GMC Diesel Truck Forums
Go back a few pages for my water injection system pics.

Water injection - EcoModder

Built an intake adaptor to try and use what I believe is the more efficient of the 5 factory intake manifolds made for the 6.2L/6.5T engine serries.
The problem is that intake manifold is set up for N/A use and I am trying to run a turbo ready intake for testing.
F-code/J-code adaptor - Diesel Place : Chevrolet and GMC Diesel Truck Forums

I removed dirty stained 2nd row seats, 75lb.

And I bought some .100'' aluminum dimond plate to do a 7 inch air dam just below the bumper.
Edit: cancel that Idea, I'm putting a peterbilt bumper on.

And I have come to the conclusion I need to trade my brand new 31'' yokohama AT-S tires for some 31'' General LLR HT-S (highway tires).
Edit: I am going run all 5 of my yoko AT-S tires till they are smooth.

I am down 7mpg from my all time high. This is where I think I am losing MPGs:
Winter -2 to -3 mpg
Going from sea level to 4400ft, -1 to -2 MPG (nothing can fix that)
Going from worn 31inch good year RT-S tires to new yoko 31inch AT-S tires -2mpg (confirmed by friend who did the same swap)
Switching from my ram air fed J-code intake manifold to the turbo ready F-code intake manifold. -2mpg (didn't know what was going to happen when I did this)
Edit: I hand made an adaptor plate to put the pennsular upper plenum on a non turbo J-code intake.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.

Last edited by oil pan 4; 02-01-2013 at 07:01 PM..
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