Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-18-2003, 10:30 PM
ck42's Avatar
Registered User
 
Join Date: Nov 2001
Location: Holly Springs, GA
Posts: 874
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.

__________________
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)
Reply With Quote
  #2  
Old 04-18-2003, 10:35 PM
Registered User
 
Join Date: Aug 2002
Location: NE Okla
Posts: 1,104
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.
__________________
1961 190Db retired
1968 220D/8 325,000
1983 300D 164,150
Reply With Quote
  #3  
Old 04-18-2003, 10:43 PM
billrok's Avatar
Registered User
 
Join Date: Dec 2001
Location: Chicago area
Posts: 242
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.
__________________
Orland Park, IL
1985 300SD 215,000 miles
Reply With Quote
  #4  
Old 04-18-2003, 11:24 PM
The Warden's Avatar
Certified diesel nut
 
Join Date: Mar 2002
Location: Pacifica (SF Bay Area), CA
Posts: 2,946
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...?
__________________
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
Reply With Quote
  #5  
Old 04-19-2003, 12:51 AM
ck42's Avatar
Registered User
 
Join Date: Nov 2001
Location: Holly Springs, GA
Posts: 874
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.
__________________
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)
Reply With Quote
  #6  
Old 04-19-2003, 01:04 AM
BIGRED's Avatar
Registered User
 
Join Date: Mar 2003
Location: Coarsegold Ca
Posts: 694
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.
__________________
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
Reply With Quote
  #7  
Old 04-19-2003, 03:25 AM
The Warden's Avatar
Certified diesel nut
 
Join Date: Mar 2002
Location: Pacifica (SF Bay Area), CA
Posts: 2,946
Hey, how does this gauge look? That's from Isspro...I can't rememebr exactly what the max boost is on these engines...
Reply With Quote
  #8  
Old 04-19-2003, 04:18 AM
dzldog
Guest
 
Posts: n/a
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.
Reply With Quote
  #9  
Old 04-19-2003, 09:39 AM
Registered User
 
Join Date: Nov 2002
Location: Wakefield, RI
Posts: 2,145
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
__________________
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
Reply With Quote
  #10  
Old 04-19-2003, 02:46 PM
jhal's Avatar
Registered User
 
Join Date: Dec 2002
Location: Brooksville Fl
Posts: 226
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.
Reply With Quote
  #11  
Old 04-19-2003, 04:04 PM
ck42's Avatar
Registered User
 
Join Date: Nov 2001
Location: Holly Springs, GA
Posts: 874
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.
__________________
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)
Reply With Quote
  #12  
Old 04-19-2003, 07:03 PM
Registered User
 
Join Date: Dec 2002
Location: NY
Posts: 61
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
Reply With Quote
  #13  
Old 04-20-2003, 12:57 AM
190D22's Avatar
Driver's Side lights
 
Join Date: Apr 2002
Location: Columbus, Ohio
Posts: 876
Just attach a file. It's above the submit button. On the page where you type your message.
__________________
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!
Reply With Quote
  #14  
Old 04-20-2003, 01:11 AM
coachgeo's Avatar
Registered User
 
Join Date: Jan 2003
Location: Southern OH
Posts: 1,800
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?
__________________
"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
Reply With Quote
  #15  
Old 04-20-2003, 10:01 AM
Registered User
 
Join Date: Dec 2002
Location: NY
Posts: 61
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?
Attached Thumbnails
Turbo boost guage advice needed-p4200004.jpg  

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 01:17 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page