Spray meth before the intercooler?
04-02-2009, 06:30 PM
#22
Teching In
Join Date: May 2008
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Imagine 70* boost before it even hits the intercooler
Any cons to spraying pre-compressor? Increased impeller erosion, slower spool (mass of liquid added), slower peak impeller speed (turbo), increased transmission & belt load (blower), increased load on impeller possible exceeding design limitations?
Not sure how significant any of that would be. Has it been considered?
Thanks,
Scott.
04-02-2009, 07:18 PM
#23
10 Second Club
iTrader: (27)
Join Date: Sep 2008
Location: Lake Tapps, WA
Posts: 2,229
Likes: 0
Received 0 Likes
on
0 Posts
Is there a place in the front half of the car to mount a tank? Also does water/methanol injection add horsepower or is it the advance in timing that gives the power increase?
04-02-2009, 09:06 PM
#24
8 Second Club
iTrader: (43)
Join Date: May 2007
Location: texas
Posts: 988
Likes: 0
Received 0 Likes
on
0 Posts
it's methanol (alcohol) dip you're finger in it then hold in the air. you can feel it's cooling effect by evaporation.
I start my spray at 5 pounds of boost & it is spraying 100 percent by 15 pounds of boost with the largest nozzle that came with my kit.
2 quarts will last me maybe 4 or 5 1/4 mile runs.
I start my spray at 5 pounds of boost & it is spraying 100 percent by 15 pounds of boost with the largest nozzle that came with my kit.
2 quarts will last me maybe 4 or 5 1/4 mile runs.
04-03-2010, 04:14 AM
#25
Launching!
Join Date: Apr 2005
Location: CAIRNS QLD AUST
Posts: 208
Likes: 0
Received 0 Likes
on
0 Posts
i have a harrop pd on top of my ls3 IT HAS A water to air INTERCOOLER mounted underneath it in the manifold
if i spray 50/50 water meth in to the throttle body
it could damage the water to air inter cooler
and leak water in to the engine
im i wright in assuming this
if i spray 50/50 water meth in to the throttle body
it could damage the water to air inter cooler
and leak water in to the engine
im i wright in assuming this
04-03-2010, 04:13 PM
#26
Consider the lowest temp possible to achieve with the Meth and intercooler.
The Methanol can easily cool the boost to sub-ambient temps.
The intercooler will be limited to cooling to ambient temps.
So, you can use the intercooler to get the boost to approach ambient, THEN spray in the Meth to get the boost sub-ambient.
On my car, I was getting IAT's 10 - 20 deg colder than ambient at 20+ psi boost. Had I put an intercooler after the Meth, it would have been actually adding heat to the boost.
The Methanol can easily cool the boost to sub-ambient temps.
The intercooler will be limited to cooling to ambient temps.
So, you can use the intercooler to get the boost to approach ambient, THEN spray in the Meth to get the boost sub-ambient.
On my car, I was getting IAT's 10 - 20 deg colder than ambient at 20+ psi boost. Had I put an intercooler after the Meth, it would have been actually adding heat to the boost.
04-04-2010, 03:46 AM
#27
When we were data logging my car on the dyno at CMS the IAT's were around 88* give or take on a high 60* night. Thats the D1 with a 3.70 pulley through a big 31x12x4 intercooler. Once we started spraying meth we saw a IAT decrease into the high 30* range. I think on average it was around 37-38*. The nice thing was that it was very consistant run after run.
04-04-2010, 02:07 PM
#28
TECH Regular
iTrader: (3)
Join Date: Nov 2005
Location: NoCal
Posts: 430
Likes: 0
Received 0 Likes
on
0 Posts
How much of a problem is then to run aluminum charge piping after the intercooler if you have it plumbled post intercooler? would stainless steel be the better route? Only problem then is finding a stainless steel tail 50mm weldable flange.
