99 7.3l snow meth or propane - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by Robts, this thread has received 4 replies and been viewed 621 times.

LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 04-24-2006, 01:52 AM Thread Starter
Robts's Avatar
Join Date: Dec 2008
Location: Michigan
Posts: 1,342
Points: 50,580
Thanks: 102
Thanked 60 Times in 51 Posts
99 7.3l snow meth or propane

My buddy just got his 99 motor redone. He put injectors and now he is wondering what is a better combo. Snow meth or propane. He pulls his race car through the mountains and want one of these.

please help:shrug:

2004F-SVT Lariat 2005 Cummins 5.9 conversion

August 2007 TDG Truck of the Month

Septmeber 2009 TDG Truck of the Month

2008 TDG Truck of the Year

2005 CR Cummins conversion with destroked motor mounts and tach module.
ARP Studs;Hamilton springs and pushrods
WickedDiesel DragonSlayer CP3 and 5x10.5 inj
Tsperformance MP8; Smarty S06 TNT-R
Speraco Inercooler; Opie Water by-pass;DTT intake elbow
Twin turbos
Grand rock 7" stacks
ATS Stage V 48re Transmission with billet output shaft and Co-pilot
Ford transfer case with ATS input shaft. Thanks to Sogrand for that
4.56 gears with Detroit truetrac. Custom Oasis Diff covers
FarmboyFabrication Ladder bars
(10) Autometer Gauges
6.5" Explorer Procomp lift with Fox Shox
37x13.5x22 Toyos with 22x10 Eagle wheels
2005 front end conversion with McColluch HID lights
Randy Ellias light bar with 4 procomp 130watt lights
Heat exchanger hood; limo tint, recon lights up top and on the mirrors
Optima. Yellow Tops; BilletBadges; Big special thanks to Walley at FTE

My Cummins conversion:https://www.thedieselgarage.com/foru...read.php?t=933
Robts is offline  
Sponsored Links
post #2 of 5 (permalink) Old 04-24-2006, 02:20 AM
Join Date: Mar 2006
Posts: 1,592
Points: 52,896
Thanks: 0
Thanked 1 Time in 1 Post
I have not used it myself : but the msd propane looks like a nice setup.:Thumbup:
imported_diesel71 is offline  
post #3 of 5 (permalink) Old 04-24-2006, 05:09 AM
Join Date: Jan 2006
Posts: 18
Points: 43
Thanks: 0
Thanked 0 Times in 0 Posts
What kind of injectors did he put in? I've heard water and meth is safer than propane, and a few people have blown headgaskets/motors with propane. What about nitrous?
f250power is offline  
post #4 of 5 (permalink) Old 04-24-2006, 01:58 PM
Join Date: Mar 2006
Posts: 94
Points: 256
Thanks: 0
Thanked 4 Times in 4 Posts
Water injection may keep your EGT's from climbing, add meth though, and that reduction is reduced or in some instances, nullified. Methanol is a fuel and it is injected, somewhat uncontrolled, (only by nozzle size) and no one really knows or can tell you a "failsafe" mixture for the methanol(20/80. 30/70 50/50?) or exactly when is the best boost pressure to inject it at. It should be around 15-20 psi for diesels. But by the time you reach 15-20 psi, the EGT's are already up there. Water alone,could keep them from climbing higher.

Propane will not lower EGT's a great deal either only about 50-100 degrees, if your not dumping a ton of propane. For towing power, which is what you asked about, propane is hard to beat, especially in the mountains and can be shut off completely when the extra power is not needed.

Nitrous can not be used for towing power. It is good for short bursts of power for racing , dyno runs, etc. You'd quickly go broke if you tried as a bottle doesn't last long at the track, let alone climbing a steep grade.

Personally, I would tell him to break that engine in a bit, make sure nothing is wrong or rears it's ugly head, before adding anything that adds torque and horsepower.

BTW, don't believe everything you hear
powershotone is offline  
post #5 of 5 (permalink) Old 04-24-2006, 03:55 PM
Senior Member
CSIPSD's Avatar
Join Date: Sep 2005
Location: Bend OR
Posts: 6,337
Points: 55,142
Thanks: 19
Thanked 78 Times in 70 Posts
Been running water injection for about 20 months and 50,000 miles. Love it, use it daily and run a 20% meth when I want extra power... I have mine set to come on, first stage at 8psi and second stage at 13psi. I can not get the EGTs above 1200 when towing once the water starts spraying!

01 F-250 SC PSD,210k,16 Isspro Gauges, AFE-2,CCV Mod,IAH delete,map reg,Modded H2e, 6.0 IC, GTS Hybrid injectors, Studs, 910 Valve springs, Forged rods Water injection,Swamps tuned, MBRP 4" dual's, Aero, 6" tip's, 100 axl tank, 4" Revtek lift, 37-14.50-17 TOYO MT's 469hp and 1068tq...

Best Auto Insurance | Auto Protection Today | FREE Trade-In Quote
CSIPSD is offline  

Quick Reply

Register Now

In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome