sharky47

Would this be possible/feasible in a 944? My dad's '70 Mach-1 had it and one of our cargo planes had it, and I was wondering if it would work in a 944N/A? For those wondering what this is, you inject water and methanol alcohol into the intake and lower the air temp as well as make it denser to get a HP boost. On a R-2800, generating 2000hp it gave us a 200hp boost. Any ideas?

Mr. Avionics

Good question,
I know having water/alchy injection is great with a turbo to keep from detonating with low octane gas, also was popular years ago with high compression muscle cars with standard ignition systems when the unleaded gas came out. Don't know how much help it would be with the DME controled motors tho. Intresting thought tho, not hard to cobble something together either. Years ago in a magazine I saw an article about making water injection using a replacement wind shield washer pump and a vacume switch, Stewart Warner makes em, when the manafold pressure dropped below a certain level the pump would come on and squirt water into the carb, happened at wide open throttle. Helped prevent knock and ping.
Any body out there know if this would be of any advantage?
Ohoooo R-2800's Nice motors....Real Airplanes have Round Motors.....

Bill

sharky47

No kidding on the 2800's we had a Convair 340 and a DC-3. The "3" didn't have water meth injection though. Are you an aircraft mech?, I am!

nine-44

I would assume that the plane uses it for low altitude(denser air down low, high comp for low desity up high, thus detonation). According to my dad, he heard it does some weird sh*t with combustion(it's a good thing).
Cooler air charge, liquid filling space(less compressable than gasses)It might (in theory)raise the compression slightlydue to this. Dunno, requires intensive testing to prove. Still might be worth a shot though.

Mr. Avionics

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by sharky47:
<strong>No kidding on the 2800's we had a Convair 340 and a DC-3. The "3" didn't have water meth injection though. Are you an aircraft mech?, I am!</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Hi Sharky,
Yea, sorta aircraft mech, actually avionics tech,install and bench, quite a bit of sheet metal too. Also have worked as mech, mostly small planes, now working for shop that does alot of biz jets on down to piston singles.
This water injection think might just be something to look into for us N/A drivers.?
Bill

turbo944

There was a big recent post (and group buy) for water injection kits (and with alcohol if wanted) on the 951 list. For the 951s it does help, consensus was that for the NA cars it wouldn't do as much. The 951 benefits a lot with the cooling that the water injection provides to the intake air which is much hotter than it would be coming into an NA car.

Cheers!