Dodge SRT Viper Forums : ViperAlley banner
1 - 9 of 9 Posts

·
Registered
Joined
·
270 Posts
Discussion Starter · #1 ·
Who here has used the water/methanol injection system on their cars? Is the one Roe making a good one or is one better than the other? Are they only good for S/C motors or will they work with nitrous and/or N/A motors?
 

·
Registered
Joined
·
3,999 Posts
Macedo has me on the list for Sean's right now. Not sure if Larry got any yet, but Roe's kit is a modified version of the Snow Performance kit.
 

·
Registered
Joined
·
270 Posts
Discussion Starter · #4 ·
So is the Roe's kit better than the snow kit or what exactly is Roe doing different to make it better or will the snow kit not work on a Viper? Has anybody actually used one of these on their diesel trucks??
 

·
Vipers should be DRIVEN !
Joined
·
4,287 Posts
Seans will be controlled by the Vec2 .....

Snow's will cost more and can be controlled by a Mass Air Flow Variable Controller.

I looked into for my diesel, but have not put on the truck ....still thinking about it.

Cudaman:flag:
 

·
Registered
Joined
·
7,340 Posts
You don't need it with my setup. It has a fuel cell that is filled with race gas. The fuel pump comes on when the nitrous is engaged. Water/methanol is better suited for a blower/turbo application.
 

·
Registered
Joined
·
4,011 Posts
Sean's also has a water/methanol tank that fits the Viper specifically, behind the right rear wheel with the filler in the trunk. Its size should be that it needs as much of a refill as the gas tank. Straight distilled water can be run in it - the methanol only provides a partial improvement in cooling (but not enough to change the timing) and the methanol also prevents the water tank from freezing in cold weather. I'm in the first group to be getting one. Dyno test will follow shortly after the instalation.
 

·
Registered
Joined
·
3,999 Posts
Per Sean Roe on the VCA site,


"Without going into a lot of detail about testing, suffice it to say that it provides a very noticeable improvement in the power and makes the car even more fun to drive. We did all our testing on the runways here, and then went on the dyno to verify the results. On the dyno, our peak numbers went from 667 RWHP to 702, while torque went from 697 to 722. At low RPM’s, the torque gain is very good. We picked up 76 RWTQ and 31 RWHP at 2,200 RPM, which is really easy to feel when driving on the street.

This will allow ALL the people with our blower kits to increase their timing, and / or boost, including the cast piston cars. The people running the lower boost pulleys and 91 octane will probably gain the most benefit, as they can increase the boost to 6.5 and run more timing advance. The additional benefit on the cast piston cars will be keeping the top of the piston cooler, which helps make it more stable and stronger."

"Here are the drivetrain specs on the shop 1996 GTS:
93 octane pump gas, standard SC kit with 2.5" pulley yielding 9 psi boost (we call it a 10 lb pulley, but the better the engine flows, the lower the boost), 1.7 roller rockers, our cylinder heads (chambers left larger to reduce compression to approximately 9.1), B&B 1&3/4" headers, high flow cats, B&B cat-back, 70 mm throttle bodies, stock airbox punched to 3" outlet, S&B air filters, aluminum flywheel, stock bottom end - clutch - trans - diff and fuel pump (with voltage booster). Other than the heads, it's a pretty standard set of mods. With stock heads, the torque would be the same to slightly higher, but with less high RPM HP.
The tune with the water / methanol was done while driving, then verified on the dyno. The tune and boost pressure were not "to the max" as this was a street test and tune project, where you could get far more aggressive on race gas.

For price, I think we'll probably end up in the $400 area.

To prototype the water / methanol kit, we started with an upgraded kit from Snow Performance. In the end, the difference will be that the kit has been reworked to be Viper specific, with a proper sized reservoir, correct sized nozzles, wiring harness and installation instructions. It will be controlled by the VEC2 and will come with a recommended tuning setup. Basically, we're doing the R&D and leg work to make this an easy install for people who have a Roe Supercharger on their car, so they can get more power and enjoyment out of their mods without spending much."

The nice thing is see is guys can run a 10lb pulley (forged piston cars) with the water/meth kit and not have to upgrade their fuel system if they don't want to (beyond the voltage booster). So must be slightly adding a small shot of fuel rather than just cooling. Tony Armour has a similar setup as well running a 10lb pulley with water/meth.
 

·
Registered
Joined
·
52 Posts
Anyone considering water/meth inj. should get Sean's kit as everything will be already designed for ease of installation and tuning. I installed Snow's components three months ago and had to figure a lot of stuff out myself. With stock heads I dynoed 668rwhp / 726 tq, 91 octane, 10 lb, tuned on the street.
 
1 - 9 of 9 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top