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#1
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Turbo boost guage advice needed
I'm gonna buy a boost guage but have come across some that have a range I'm not familiar with.
Some of these offer a range where the needle goes from X in Hg to 0 to X PSI. Would having this 'dual' range type guage be of ANY benefit to me? I figured on just getting a 0-15 PSI guage and being done with it.
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Chris 1985 300SD - 'Grace' (198K mi.) 2018 Honda Civic Sport 2018 Honda CRV LX 2010 Honda Fit Sport (RIP) 2013 Honda Accord Sport (Sold) 1996 Lexus LS400 (Retired) 1995 Ford Contour SE (Retired) 1976 Porsche 914 (Sold) 1972 Datsun 240Z (RIP) |
#2
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The part of the range labeled inches of Hg is the vacuum part of the gauge. It could be used with a switching valve to check vacuum points. Probably intended for a gasser originally.
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1961 190Db retired 1968 220D/8 325,000 1983 300D 164,150 |
#3
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I'd go with the cheapest 0-30psi pressure gage you can find. If you know of anyone who works with pneumatic controls they would have plenty. All you need is a 1/4" barbed fitting and some 1/4" poly tubing. Standard stuff in the world of pneumatic controls. I'd say 0-15 psi is ok also. You probably won't see any boost pressures on your benz over 10psi or so if its original. The combination gage of Inches of Mercury and Pressure in psi is perfectly fine also. We're not building a watch, just checking turbo boost pressures here.
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Orland Park, IL 1985 300SD 215,000 miles |
#4
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Actually, I think the vacuum reading can be used to determine how clean the air filter is...like, if you're seeing very much of a vacuum at idle, that means the engine's working harder to pull air in. Just a thought...
Also, where are you planning to mount this? I would like to put in a boost gauge along with a pyrometer, but I don't knwo where to locate the gauges where they would fit in with the rest of the interior...?
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2001 VW Jetta TDI, 5 speed, daily driver 1991 Ford F-350, work in progress 1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D Spark-free since 1999 |
#5
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I'm *wanting* to mount it in the ashtray. Anywhere where it would be seen, it would look out of place I think.
The idea of seeing vacuum levels while the turbo is not producing boost is an interesting thought.
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Chris 1985 300SD - 'Grace' (198K mi.) 2018 Honda Civic Sport 2018 Honda CRV LX 2010 Honda Fit Sport (RIP) 2013 Honda Accord Sport (Sold) 1996 Lexus LS400 (Retired) 1995 Ford Contour SE (Retired) 1976 Porsche 914 (Sold) 1972 Datsun 240Z (RIP) |
#6
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I wouls suggest that you try and get a scale that would allow you to see it in a glance. If the range is to high you would need to focus on it to know the boost level.
I wonder if anyone make a digital unit (3/4" by 1 1/2") , that way it would be clean no matter where you put it.
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1980 300TD-T (82 Turbo and Trans) 159,000 Miles "Jackie-O" 1983 300SD 272,000 Miles "Aristotle" 1987 Jeep Wagoneer Limited - keeps the MB's off the ice and out of the snow 1994 BMW 530it |
#7
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Hey, how does this gauge look? That's from Isspro...I can't rememebr exactly what the max boost is on these engines...
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#8
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Here's what I installed:
16.99 boost gauge! Also, why T? There are additional ports in the intake manifold into which the boost gauge line can be tapped. |
#9
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I would buy a gauge without the vacuum section and the smallest psi range possible, a 0-15psi would be perfect as these engines shouldn't be over 14psi anyway. A 0-30+psi gauge or one that has a vacuum scale on it reduces its readability and adds nothing for our application. Check this gauge out: http://www.dieselpage.com/iss14.htm
or this: http://www.dieselpage.com/issev2.htm For digital, check out: http://www.speedshop.org/store/Scripts/prodView.asp?idproduct=20 Have fun! RT
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When all else fails, vote from the rooftops! 84' Mercedes Benz 300D Anthracite/black, 171K 03' Volkswagen Jetta TDI blue/black, 93K 93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K |
#10
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Check out egauges.com, they have a pretty impressive selection of VDO gauges that are suprisilngly inexpensive. I will be adding a 15 psi boost gauge to my 123 as soon as I get time. Haven't decided on a mounting place yet. I will post pics as soon as it is completed.
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#11
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jhal: Jep...already been looking at egauges.
Let me know if you think of any good places to put the gauge. I plan on *trying* to fit it into the ash tray.
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Chris 1985 300SD - 'Grace' (198K mi.) 2018 Honda Civic Sport 2018 Honda CRV LX 2010 Honda Fit Sport (RIP) 2013 Honda Accord Sport (Sold) 1996 Lexus LS400 (Retired) 1995 Ford Contour SE (Retired) 1976 Porsche 914 (Sold) 1972 Datsun 240Z (RIP) |
#12
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I did put mine ( voltmeter and boost ) on the pilar pod and it looks very sportiv
I whant to post picture but i do not now how to on this site , please somebody can teach me step by step? thanks |
#13
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Just attach a file. It's above the submit button. On the page where you type your message.
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1984 190D 2.2 Auto 220k 2001 Jeep Cherokee Sport 70K 2004 Lexus RX-330 ??K 2005 Chrylser Crossfire LTD 6K Play guitar? Go to www.cyberfret.com for free online lessons! |
#14
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0.5 bar
my booste Gage is in Bar. It was installed in Germany. Turbo sits at about 0.5 bar which works out to 7.252 psi. How is this for a 617A, about right, good, performance setting, low setting?
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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 |
#15
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I hope this picture help
My boost shows at 4000RPM 10psi and i will whant to change to 13psi My question to you guys is "do i have to alter ALDA to, when i will reach 13PSI OR NOT? |
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