Turbo__Tim
One heck of a Tim!
- Joined
- May 25, 2001
Here is an idea that is worth looking at. Joritman and I have been discussing this in another thread (propane) And I didn't want to divert the thread off it's subject anymore so I'm transferring the thread to here.
Here is most of it:
joereitman
Junior Member
Registered: Sep 2002
Location:
Posts: 8
quote:
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Originally posted by Turbo__Tim
joereitman, Actually I tried injection with alchy (up-pipe) and didn't see any improvement to speak of in brief testing. I did get 1 more # of boost, but without actually timing this at the track, who knows if that was effective.
My plans are to inject 50-50 using about half size jets, pre-intercooler. You will cool the intercooler, no doubt about that at all.
It's worth a try, heck even if you only gain 25 HP. (2psi?) Also It's nice to have a sort of back up system should the propane fail.
I won't be doing mine until the spring. I'll post results then....Good Luck!
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Thanks Tim. I am also finding that the propane works much more effectively with some toluene in the tank (16-17% yesterday)- no suprise there, but also much better results than toluene alone, again no suprise. I will try with about 8-10% toluene and see if that will still let me run no knock.
But I need to address heat soak and I think 50/50 pre ic would do the trick, maybe with a 100 psi shurflo and an extra 250 psi propane solenoid laying on the workbench. I hope the propane solenoid holds up to the 50/50, I will probably let it soak in some ww fluid off and on for a week or so to ensure no corrosion. It is brass so I think it will be ok. Any thoughts?
I am considering a jet/nozzle from Mcmaster-carr. I will trigger the solenoid off the same hobbs that opens the propane solenoid, to keep things simple. The Impco has a low amp draw so 2 solenoids off the same wire should be fine I guess.
2 more psi would put me at 23psi, which is about the limit for stock dsm head bolts anyway.
thanks again.
Joe
My reply....
Joe I can't comment on the Solenoid, tho is seems that a 50-50 mix of isoprophol alchy should cause no harm....IMO
I've read 2 articles on pre-intercooler injection. In one a fellow on this board reported success and commented that he was able to spray a lot more alchy this way. (I suspect this is due to the finer atomization brought on from the mix beating it's way through the intercooler)
In the second article I found on the web the gains were substantial, and the guy said the intercooler was cool to the touch.
With your situation (combining the alchy and propane) I would try to use a windshield motor pump, and any old jet (like a windshield spray jet) that you could get next to nothing at a salvage yard. If that set-up squirts 4-6 ounces in 12 seconds you are in the ball park. If it squirts less, you may still be ok, because I don't think you are going to need very much spray to be effective along with the propane.
BTW liquid steel is fine for mounting the jet. Just a little is all you need, and easier to chisle off if things don't work out right.
As far as jets go, I would check with Brad at Aquamist (google search for tel#) Tho I am not sure the solenoid he has will not corrode with an alchy mix. The sure flow pump would work best with 1mm jet(s) and adding jets is really easy with the 'snap on' T connectors, using 10mm plastic line.
Aquamist reccomends injecting pure water only, which will not work in our cars, at the up-pipe, but may work pre-intercooler.
You may find that injecting pure water, in small, well atomized amounts, pre intercooler will work just fine.
Now you have some things to think about...
Here is most of it:
joereitman
Junior Member
Registered: Sep 2002
Location:
Posts: 8
quote:
--------------------------------------------------------------------------------
Originally posted by Turbo__Tim
joereitman, Actually I tried injection with alchy (up-pipe) and didn't see any improvement to speak of in brief testing. I did get 1 more # of boost, but without actually timing this at the track, who knows if that was effective.
My plans are to inject 50-50 using about half size jets, pre-intercooler. You will cool the intercooler, no doubt about that at all.
It's worth a try, heck even if you only gain 25 HP. (2psi?) Also It's nice to have a sort of back up system should the propane fail.
I won't be doing mine until the spring. I'll post results then....Good Luck!
--------------------------------------------------------------------------------
Thanks Tim. I am also finding that the propane works much more effectively with some toluene in the tank (16-17% yesterday)- no suprise there, but also much better results than toluene alone, again no suprise. I will try with about 8-10% toluene and see if that will still let me run no knock.
But I need to address heat soak and I think 50/50 pre ic would do the trick, maybe with a 100 psi shurflo and an extra 250 psi propane solenoid laying on the workbench. I hope the propane solenoid holds up to the 50/50, I will probably let it soak in some ww fluid off and on for a week or so to ensure no corrosion. It is brass so I think it will be ok. Any thoughts?
I am considering a jet/nozzle from Mcmaster-carr. I will trigger the solenoid off the same hobbs that opens the propane solenoid, to keep things simple. The Impco has a low amp draw so 2 solenoids off the same wire should be fine I guess.
2 more psi would put me at 23psi, which is about the limit for stock dsm head bolts anyway.
thanks again.
Joe
My reply....
Joe I can't comment on the Solenoid, tho is seems that a 50-50 mix of isoprophol alchy should cause no harm....IMO
I've read 2 articles on pre-intercooler injection. In one a fellow on this board reported success and commented that he was able to spray a lot more alchy this way. (I suspect this is due to the finer atomization brought on from the mix beating it's way through the intercooler)
In the second article I found on the web the gains were substantial, and the guy said the intercooler was cool to the touch.
With your situation (combining the alchy and propane) I would try to use a windshield motor pump, and any old jet (like a windshield spray jet) that you could get next to nothing at a salvage yard. If that set-up squirts 4-6 ounces in 12 seconds you are in the ball park. If it squirts less, you may still be ok, because I don't think you are going to need very much spray to be effective along with the propane.
BTW liquid steel is fine for mounting the jet. Just a little is all you need, and easier to chisle off if things don't work out right.
As far as jets go, I would check with Brad at Aquamist (google search for tel#) Tho I am not sure the solenoid he has will not corrode with an alchy mix. The sure flow pump would work best with 1mm jet(s) and adding jets is really easy with the 'snap on' T connectors, using 10mm plastic line.
Aquamist reccomends injecting pure water only, which will not work in our cars, at the up-pipe, but may work pre-intercooler.
You may find that injecting pure water, in small, well atomized amounts, pre intercooler will work just fine.
Now you have some things to think about...
