Injector testing - Page 5 - PeachParts Mercedes-Benz Forum

rs899 · #61 12-24-2005, 06:21 AM

Ah yes, the age-old shim source issue.....

OK , you pop-tester cognoscenti-

will these work for our applications?

Quote:

Shims and Shim Stock
5 products match your selections
DIN Specification DIN 988
Type Round Shims
Shim Type Standard
Material Plain Steel
Material Type 1010 Carbon Steel
System of Measurement Metric
Inside Diameter 5 mm
Outside Diameter 10 mm
Specifications Met Deutsche Industrie Normen (DIN)

Thickness
.1 mm | .2 mm | .3 mm | .5 mm | 1.0 mm

These 5 products match your selections
Thickness
.1 mm 98055A095 $6.25 per Pack of 50

.2 mm 98055A096 6.33 per Pack of 50

.3 mm 98055A097 7.03 per Pack of 50

.5 mm 98055A098 7.81 per Pack of 50

1.0 mm 98055A099 7.91 per Pack of 50

These are on the Mcmaster-carr catalog. My buddy ,who is an amateur machinist and GM dieselhead , thinks they may be hard enough (DIN 988).

Waddaya think?

Rick

#62 12-24-2005, 08:45 AM

Me thinks they would be perfect but be aware you cant stack shims to make your desired thickness IE: you cant use 5 1mm shims to make a 5mm this I think would be very bad but I for one would give these a try if they had the thickness I needed for a injector. However, you need a much larger supply of different size shims they very from paper thin to almost as thick as a penny. It is a real pain to take apart the injectors at the junkyard hoping to get lucky and find a shim size you need. A source that was off the shelf instead of custom-made minimum order 500 would be nice. If you rebuild a thousand sets a year, you can afford to buy a hundred sets of 500 shims if you do 50 sets it is to expensive . However, when you have 38 sets of good injectors that just need the right shims something has to give and it cannot be quality catch 22
Dave S

Brian Carlton · #63 12-24-2005, 11:01 AM

Quote:

Originally Posted by rs899

Ah yes, the age-old shim source issue.....

OK , you pop-tester cognoscenti-

will these work for our applications?

These are on the Mcmaster-carr catalog. My buddy ,who is an amateur machinist and GM dieselhead , thinks they may be hard enough (DIN 988).

Waddaya think?

Rick

1010 is a low carbon steel. It cannot be hardened.

whunter · #64 12-24-2005, 12:39 PM

Quote:

Originally Posted by mattdave

RE Jewelry ultrasonic cleaner and carburetor cleaner don’t try it my wife almost killed me when the carburetor cleaner melted her jewelry ultrasonic cleaner. I used acetone in an industrial cleaner and sent up such a fire ball the neighbors called the fire department I hope that is enough to discourage you from using flammable liquids in an electronic cleaner. I knew it was stupid and thank god I was doing it out back just in case or it would have blown the garage up and burnt the house down as it was I just got blown 2 feet in the air and 3 feet back. We won’t talk about the fireman’s response to a man with badly singed hairs telling them fire what fire sir. STUPID stuff makes me wiser the hard way though. I recommend just reading about such things and not trying them you’re self.
DHS

This needs to be a WARNING DANGER thread!!!
As a topic (Ultrasonic Jewelry Cleaner) keeps popping up in threads.
You may prevent a forum member injury/death with this information.

whunter · #65 05-12-2008, 12:41 AM

Quote:

Originally Posted by Brian Carlton

One of our new members has setup an injector testor and has graciously offered to test injectors for members at a cost of $3. per injector .

His contact name is buyabsellonebay.

I've added this to the tool rental program for future reference.

Is he still doing injector service Brian ???

Brian Carlton · #66 05-12-2008, 12:45 AM

Quote:

Originally Posted by whunter

Is he still doing injector service Brian ???

1) View public profile

2) Read "last activity".

3) Draw conclusion.

#67 05-12-2008, 12:47 AM

Last Activity: 01-01-2006

That does not mean he is no longer doing it, only that he stopped coming here.

TomJ stopped coming here too, but I still contact him through the ShopForum PM system.

bgkast · #68 11-19-2008, 05:40 PM

Now that I have all the tools and am comfortable with the process I am offering a pop test/balance/spray pattern check for members here. I will match the original poster's $3/injector to pop test and spray pattern check them if that is all you want done.

Injector disassembly, cleaning and balancing and rebuilding will be $10/injector plus the cost of a nozzle if you want the injector rebuilt. As a comparison my local injection shop wanted $24/injector for this service.

I will also offer rebuilt injectors with heat shields on a core exchange basis for $32/each plus a $15 core charge that will be refunded on receipt of a rebuildable core.

I will also include a printout with each injector that shows pop pressure, shim thickness and spray pattern.

PM me if interested.

Edit: I had to raise my core charge. I have done several sets now and have not got any cores back.

Diesel911 · #69 11-20-2008, 12:15 AM

Quote:

Originally Posted by sdparizona

the PO of my 617 turbo installed rebuilt injectors and each one has the rubber band on it covering the original marking on the injector. Each one of these rubber bands has NA34X typed on them. what does this mean?? seems to me NA could stand for Naturally Aspirated and so therefore are the wrong injectors for my turbo??!?, hmmm. a good decifer would be great,
Scott

The Plastic/Rubber band is put there whe Bosch rebuilts the Injector and they give it a new part number indicating it was rebuilt.
I also believe the band covers up the stamped numbers on the upper Injector Body so that they can use any body that fits that they have on hand to build them into Injectors with what ever opening pressure they want reguardless what is stamped on the body.

Go to several internet parts sources and look at the rebuilt injectors for a 78 200D and a 84 300d; often they will give you the Bosch NA**X number and you can compare them.

Cr from Texas · #70 02-26-2009, 07:29 PM

Quote:

Originally Posted by bgkast

Now that I have all the tools and am comfortable with the process I am offering a pop test/balance/spray pattern check for members here. I will match the original poster's $3/injector to pop test and spray pattern check them if that is all you want done.

Injector disassembly, cleaning and balancing and rebuilding will be $10/injector plus the cost of a nozzle if you want the injector rebuilt. As a comparison my local injection shop wanted $24/injector for this service.

I will also offer rebuilt injectors with heat shields on a core exchange basis for $32/each plus a $15 core charge that will be refunded on receipt of a rebuildable core.

I will also include a printout with each injector that shows pop pressure, shim thickness and spray pattern.

PM me if interested.

Edit: I had to raise my core charge. I have done several sets now and have not got any cores back.

What does the forum recommend. I'd like to get my 83 300D to idle smoother. It's the worst after a highway run when the engine is really warmed up good. Motor mounts are new. Should I do injectors? One was replaced about two years ago. The other 4 are originals that have never been removed.

Tenative plan:
A local guy is parting out an 85 300D and will sell me the injectors for $60 (all 5). Buy these and send to bgkast to clean, test, etc. Should I also have the Monarch nozzels put on? What do I watch for to be sure the parted out ones are rebuildable? This would leave me with a drivable car while bgkast does his majic. My total cost:
$60 for the used injectors + ? Monark nozzles + bgkast magic = ?

bgkast · #71 02-26-2009, 08:29 PM

What color is your rack damper pin?

Cr from Texas · #72 02-26-2009, 08:38 PM

You'll have to tell me where to look or I'll have to search the forum for a picture. I'll be searching while I wait for a reply.

whunter · #73 02-26-2009, 09:18 PM

Quote:

Originally Posted by Cr from Texas

You'll have to tell me where to look or I'll have to search the forum for a picture. I'll be searching while I wait for a reply.

so, what does that rack damper bolt (617) actually do?
http://www.peachparts.com/shopforum/diesel-discussion/183139-so-what-does-rack-damper-bolt-617-actually-do.html#post1458468

Part# rack dampener pin for 1985 300SD
http://www.peachparts.com/shopforum/diesel-discussion/120005-part-rack-damper-pin-1985-300sd.html#post858324

Adjusting the Rack Damper Bolt
http://articles.mbz.org/engine/diesel/rackbolt/

Have a great day

Cr from Texas · #74 02-26-2009, 10:03 PM

Quote:

Originally Posted by whunter

so, what does that rack damper bolt (617) actually do?
http://www.peachparts.com/shopforum/showthread.php?p=1458468

Part# rack dampener pin for 1985 300SD
http://www.peachparts.com/shopforum/showthread.php?p=858324

Adjusting the Rack Damper Bolt
http://articles.mbz.org/engine/diesel/rackbolt/

Have a great day

Thanks Hunter, That last link has the picture that identifies the bolt. I had also gone out to take some pictures of mine. The first picture is the dampener bolt, right - it is silver. It doesn't look like there would be much room to get it out because of the oil filter housing but apparently there is.

What's this bolt in the second picture? This is what I thought I was looking for until I saw the picture in Hunter's post. It's on the driver side of the injection pump and looks like it is some kind of adjustment bolt.

First time to post pictures - hope it works

Diesel911 · #75 02-27-2009, 12:55 AM

Quote:

Originally Posted by Cr from Texas

What does the forum recommend. I'd like to get my 83 300D to idle smoother. It's the worst after a highway run when the engine is really warmed up good. Motor mounts are new. Should I do injectors? One was replaced about two years ago. The other 4 are originals that have never been removed.

Tenative plan:
A local guy is parting out an 85 300D and will sell me the injectors for $60 (all 5). Buy these and send to bgkast to clean, test, etc. Should I also have the Monarch nozzels put on? What do I watch for to be sure the parted out ones are rebuildable? This would leave me with a drivable car while bgkast does his majic. My total cost:
$60 for the used injectors + ? Monark nozzles + bgkast magic = ?

I do not know what the cost in your area; but, if you go to the Junk Yard and pull the Injectors yourself out here in CA the Injectors are $4.99.
$25 for 5 Injectors verses $60.
This would be if you were going to use the Injectors as Cores to put on new Nozzles.

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