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using the turbo booste port ; need tech. help
Anyone know if the port on the 5cyl 300 turbo Diesel (1984 era) for the booste gauge is metric threads orrr? .
ok, after some talk with an engineer about an LP booste setup the desision is to use the port where the turbo booste gauge gets it's pressure. I want to put a Y into this port. ONe side of the Y will be the booste gauge and the other side the LP injection. Anyone see a reason to NOT use this port. If so... please have handy a suggestion on another port usable for LP injection. Why LP injection? Load up ur car or waggon with the 5cyl 300 turbo in it untill it weighs 5 1/2 tons then try driving up long upgrades and you'll understand why. You'll understand even better if you change the gear rations to LOW tractor like power. Thats my set up.. a Unimog w/the 617 925 LP will only be used on hills.. sorta like a nitrous kick in a gasser.
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
#2
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my 83 does not have a boost guage, the only port would be the port for the waste gate and it is a puch on with a hose clamp
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Quote:
Then again maybe my port was added by the previous owner?
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
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the waste gate is to set the boost of the turbo and the line that I was talking about tells the waste gate to open or close by the pressure
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I found this pic while doing a search here on this BB. This is not my engine but it is a good sample shot. I labled it to show where my boost gauge line is installed. It is a standard SAE pipe thread I discovered today.
Here is what the engineer who designed the LP set up I have comming to me said about using this port for serveral purposes, including the boost gauge. Quote:
My wonder is; is not pressure is going OUT this port to the boost gauge. So would that not mean that anything (or some of anything) that is injected here,go out toward the gauge and not into the intake? Im also little concerned of LP leaking out into my cab at the gauge. NO SMOKING. The LP is intended to only be used for up hill climbs in my 5.5ton MB Any comments on my wonderings and concers will be greatly appreciated
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels Last edited by coachgeo; 06-13-2003 at 11:07 PM. |
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at the other end of the manifold is a vacuum port that might work better, unless your propane inj. is greater pressure than the turbo, if it is higher pressure than the turbo your boost gage will reflect this. on the plus side if you inj. at the turbo the cooler propane should really help.
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#7
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hihosilver, there is no vacuum port in a Diesel manifold because there is no vacuum to speak of in an engine that doesn't throttle air.
coachgeo, check with folks who use water injection on turbocharged gassers. They know how to build water injection systems with higher pressure than max boost so it does spray under boost. There might be a way to fashion a squirter like a pitot tube so it sprays with the airflow rather than across the airflow. But maybe spraying across the airflow is better for mixing. Check out: http://www.utterpower.com/waterinj.htm http://www.racetep.com/wik.html http://www.duramax.bizhosting.com/My_Truck/water_injection.htm Sixto 95 S420 91 300SE 87 300SDL 83 300SD |
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Quote:
I have already spoke with the designer of the system I'm using and this area is not good for injecting cause it is at the end of the air flow and wont evenly distribute the vaporized gas. BUTTTTTTTTTTTTT It has other use potential to me if their is a port back there, AKA --> wastegate controller! Can you give me more detail of where the port you speak of is? PS... yes, I know they are not vacume ports. and Yes both injectors are greater pressure than the turbo.
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels Last edited by coachgeo; 06-14-2003 at 11:30 AM. |
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Quote:
I think your second thought is right though. It should vaporize better and maybe get distributed better injected perpendicular to the flow of air. Both injectors comming to me are greater than the turbo boost.
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
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A pitot tube usually points against the flow to catch a sample of airflow. In this case it points the other way as you surmised. There might even be beneftis from the Bernoulli effect.
Sixto 95 S420 91 300SE 87 300SDL 83 300SD |
#11
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upping the questions
Ok... so here is my new reviesed questions
1. Is there a port below the banjo bolt in the back of the intake? Mine has another bolt there that looks simular. 2. Can I use that or a different port (besides the usual one) for the Wastegate pressure.? 3. Does anyone see a reason to NOT use the ports I have now for boost and the port that is now used for wastegate pressure as points for LP and or water/alcohol injection? THANX.
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
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