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General Information => Smoke Tales => Topic started by: bgrunhaus on March 15, 2011, 05:16:52 pm
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Hey guys i believe this is something to share!
a few days ago i installed a water injection system on my AAZ.
i quickly noticed that there was no smoke! then i decided to crank the fuel screw a turn and a half and guess what? NO SMOKE!!!!
im impressed!
im only injecting water @ 10psi and up.
i recomend water injection to everyone out there! the car is faster and no smoke! does it mean i can crank the fuel screw even more?
im telling you, i cant believe it!!
two thumbs up for water injection! 100% water! WOW!!!
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how are you injecting it?
what were your EGTs before and after?
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im sorry, I dont have that kind of info, yet!
i have a very simple setup by Coolingmist, i had a VR6 3.0 SC corrado and i had the setup for that engine but i sold the car so i kept the kit and i installed it in my new car, the AAZ.
tha thing is a have HUGE nozzle, 300cc/min to be precise. from what i've been reading im injecting twice the amount needed but the car doesn't miss or anything.
the thing is it DOESN'T smoke so i'm really impressed!
i might get a and gauge and do a more scientific procedure to decide if the water injection is as good as i feel and of course post the effect on the EGT's
so far? AMAZED!
can anyone share their experience? any pointers?
thank you for your interest!
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if you shoot too much water, you are going to bend a rod..
it takes something like 2.5cc's of water to bend a rod..
be careful, dont run too much.. its just making your compression go thru the roof.. water displaces air in the combustion chamber.. and water does not compress..
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thanks for your concerns!
here are some numbers
im using a 300cc/min nozzle
that means 5cc/sec
divided by 4 (cylinders) is 1.25cc
if I start injecting @ 2000rpm that means 33revolutions per second, the intake valves open onces every two revs meaning a cylinder can only accept air and water(in this case) 16.5 times x second that means that every cylinder can accept the amount available per second divided by the amount of times the valve opens every second. number wise
1.5cc/16.5 times the valve opens, meaning every time the valves opens the cylinder accepts 0.09cc of water.
i believe im on the safe side!
something interesting: 1gram of water vapor takes 1600 times more space than the same weight of liquid water.more volume, more piston pressure, more torque. water in cylinder less temp. water injection ROCKS!!!!
what do you guys think?
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I'd say crank the s*it out of the fuel screw till you begin to see some smoke.. No smoke means basically your EGT's probably aren't even worth caring about. You need to be rolling coal to get high EGT's
This is very interesting.
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I'd say crank the s*it out of the fuel screw till you begin to see some smoke.. No smoke means basically your EGT's probably aren't even worth caring about. You need to be rolling coal to get high EGT's
This is very interesting.
LIES. LOL. My Giles pump has virtually no smoke, but I have had it up to 1450F....Get a GAUGE
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I'd say crank the s*it out of the fuel screw till you begin to see some smoke.. No smoke means basically your EGT's probably aren't even worth caring about. You need to be rolling coal to get high EGT's
This is very interesting.
LIES. LOL. My Giles pump has virtually no smoke, but I have had it up to 1450F....Get a GAUGE
LIES x2!!
i siezed my engine, and my car wont smoke.. dont have a gauge.. but tell me that my exhaust was cool since it was clear?
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I will rephrase. In my diesel travels over the last 3 years, I have not once seen anyone claim extraordinarily high egt's without smoke. How often are you making so much heat that it doesn't show by unburnt fuel?
Kev, maybe your engine seized for different reasons? If you didn't have a guage or smoke how do you know it was EGT related? There would be no evidence of high temps without the guage or smoke.
At this point am I safe to assume that you still are not running an intercooler Lucas? Maybe your high egts and no smoke are because the bottleneck of your engine is prior to the fuel being injected? Hot air being compressed in to hotter air?
I dunno, sorry for spreading nullified info, I was under the impression smoke meant high temps.
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No smoke = lower EGT's
But I guess with ULSD it doesn't matter either way.. ?
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I will rephrase. In my diesel travels over the last 3 years, I have not once seen anyone claim extraordinarily high egt's without smoke. How often are you making so much heat that it doesn't show by unburnt fuel?
Kev, maybe your engine seized for different reasons? If you didn't have a guage or smoke how do you know it was EGT related? There would be no evidence of high temps without the guage or smoke.
At this point am I safe to assume that you still are not running an intercooler Lucas? Maybe your high egts and no smoke are because the bottleneck of your engine is prior to the fuel being injected? Hot air being compressed in to hotter air?
I dunno, sorry for spreading nullified info, I was under the impression smoke meant high temps.
come up with an excuse better than the one i came up with?
i was running WOT for 2 miles, up hill. engine lost power at the top.. locked up.
what else, besides an overheated (over expanded) piston(s) would cause the engine to just lock up? then break free as soon as it cooled a bit?
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I dunno man, I don't see how you have high egt's without smoke. Lucas yours is completely different, you have a pump tuned for maximum power with as little loss as possible (smoke) on top of a free intake, and 3" exhaust. Kev I do believe you were running an n/a pump, on a diesel with stock exhaust? or was this the open DP?
I dunno what happened to your engine, without an EGT reading.. or smoke to even guess high egt.. We cannot say it was EGT related lol.
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I dunno man, I don't see how you have high egt's without smoke. Lucas yours is completely different, you have a pump tuned for maximum power with as little loss as possible (smoke) on top of a free intake, and 3" exhaust. Kev I do believe you were running an n/a pump, on a diesel with stock exhaust? or was this the open DP?
I dunno what happened to your engine, without an EGT reading.. or smoke to even guess high egt.. We cannot say it was EGT related lol.
n/a block, 25(ish)psi, cranked up fuel pump, no intercooler, open downpipe (>1' from the turbo outlet, to the end of the downpipe), yadda yadda...
anyway, yea, i figure that at 5200 rpms, i could be making 25psi with no smoke and still have dangerous (quite appearently) stack temps..
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This is all weird... I can see 600Degs C (1100 F?) with an AAZ, all standard, with a bit of extra fuel, 8-9psi, with no smoke??
???
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This is all weird... I can see 600Degs C (1100 F?) with an AAZ, all standard, with a bit of extra fuel, 8-9psi, with no smoke??
???
I'm with ROR and theman on this... I was running 10psi on my AAZ, fueling turned up so it was just a very slight haze at full boost, figuring I'd have no trouble with EGT's at that. I then put a gauge on and realized I would have been hitting 1400+ very regularly.
Advancing my timing brought the temps down a fair bit, so I'd check that, Vitwagen. I could still get it over 1200 though.
When I pulled my engine apart, I couldn't see any issues from running too hot... without a gauge is still playing with fire though
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I can hit 1450 without smoke on stock fueling.
I also seized a piston without smoke by slipping the water pump drive belt. I thought I was cool, because the temp gauge never went over 2/3ds :(
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I have a 1.6td running about 19psi with a K14. At WOT under boost, I don't smoke...but I do see EGTs up to 1350 if I hold it there...and it'll slowly climb if I Kept my foot on the floor (which I don't, I let off at those temps). A lot of factors involved with EGTs. In my case I'm running the turbo out of it's effeciency range, which make some heat. 2.5" down pipe and exhaust, and small intercooler, all helped to get it to where it is now...but I plan to try water injection, a K24, and more fuel this year...we'll see where the EGTs end up then.