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#31
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shims
I ordered shims from the local stealership - about $2 each. They are called washers or spacers, I think that's what he said.
Anyway, he said they come in 0.05 mm increments starting at 1.0 mm. That didn't sound right to me - I thought I saw a post about the shims being .2 mm starting size (or was it the FSM). So for shims, before you mail order, it might be worth getting them straight from the dealer. |
#32
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1.00 to 2.00 mm. is correct. The ones in the 1.60 mm. range are sorta, kinda, ~, approximately the most common. 0.05 mm change in thickness equals ~ 3 bar change in pressure.
__________________
The Golden Rule 1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later) |
#33
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Thicker shims equalling a raise in pop pressure, right? I got my tester set up and working today and I need a source of shims to start balancing them.
__________________
Seth 1984 300D 225K 1985 300D Donor body 1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!! 1980 300SD 311K My New Baby. 1979 BMW 633csi 62K+++? Dead odo |
#34
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You can lower pop pressure by sanding/lapping the spring and zero in very precisely on a pop pressure. That method requires that one set all of the injectors slightly above the desired pressure and then drop them down to the exact pressure desired. I have adjusted injectors to within 10 psi on a set of four. I usually opt for 30 psi as closer than that takes a whole lot more time and I cannot notice a difference in performance. I also opt for the high spec on pop pressures and the advanced spec for timing as that combo assists economy and cold starts due to bettter atomization.
Andrew |
#35
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There is a pedantic and unhealthy obsession on this board with balancing injectors. Get them within the range specified in the factory shop manual and call them perfect.
The priorities in injector work are cleanliness, sealing and spray patterns. Read the book. If you want to spend your time and money balancing injectors to the nth degree, you have nothing to lose but your time and money. Don't expect any real results. You do get bragging rights, anyone who knows what you are talking about will only be impressed that you wasted your time and money. Read the book. Last edited by TwitchKitty; 04-21-2006 at 08:42 AM. |
#36
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achtung!!!
__________________
michael cole 1980 300SD gone now but not forgotten,87tdt,90 300te 4matic 95 e320 wagon Last edited by michael cole; 04-24-2006 at 12:05 PM. |
#37
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Does Autozone not carry a pop tester in their rental tools? Seems it would be easier to rent one.
__________________
2005 Accord Hybrid (Wifes) 1995 Subaru Impreza L AWD (Snow car) 1984 GMC Sierra 1500 (Mine) 1983 300CD Best $ I ever spent. (Mine) 1984 190D (sold and glad I did) 1983 300D (sold and wished I hadn't) |
#38
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The pop tester is a highly precise and delicate instrument. Not your ordinary run of the mill rental tool.
__________________
Closing the store Benzbonz.biz on your smart phone or tablet. |
#39
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Firm, sharp strokes.....
Quote:
If you bring the pressure up slowly, you can find dribblers.... But....if you are testing your spray pattern, you need to operate the pumping handle with a firm, sharp motion.....the camshaft within the FI Pump operates very quickly.......use a piece of paper to determine spray pattern... However.....the type of Injector used in these 617 Engines makes a buzzing sound....that sound is very important in the setting of your injectors......also the spray pattern is different, it is designed to impinge upon the little ball in the pre-combustion chamber..... I'll see if I can find some info in one of my old textbooks...and post them here..... SB
__________________
Diesels: '85 300D, "Max, Blue Benz", 155K, 27.0 MPG '84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG '77 240D (parts car) '67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP) Gassers: '94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG '85 190E 2.3, 148K....Parts Car '58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG |
#40
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Here's a list of all the parts I ordered for mine from mcmaster.com. It includes the more expensive max pressure needle gauge. All you need to add to this list to have a pop tester is a grease gun, grease extenstion hose and an old injector line
Line Part Number Description 1 5269K311 General Purpose Steel Metric Tube Fitting Male Straight Adapter For 6 Mm Tube Od, 1/8" Npt 2 50925K121 Compact Extreme-Pressure Steel Thrd Fitting 1/8" Pipe, Female Tee, 5000 Psi 3 50925K251 Compact Extreme-Pressure Steel Thrd Fitting 1/4"X1/8"PIPE,1-7/32"L,FEM X Male ADAPTER,6000 Psi 4 3842K63 Max-Indicating Glycerin-Filled Gauge 1.5% ACCURACY,2-1/2" Dial, 1/4" Bottom, 0-3000 Psi
__________________
1983 240D Silver/Blue "Sadie", unknown miles. 100k miles on WVO single tank, converted to 2 tank about 10k miles ago, FPHE, Injector Heaters, Aux Fuel pump. Alcohol/Water injection. Frantz oil bypass filter 1992 300D 2.5 Turbo Green/Tan "Jade" 267K miles Stock. 1992 300D 2.5 tan/tan "Rocky" on 2 tank WVO. Pressure actuated Turbo "rat's nest" surgery completed. 197k miles |
#41
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Proper Pattern?
I need to work on some injectors and I have forgotten where I found a picture of the proper spray pattern. Could someone please post a pic of what a proper pattern for the 617 would look like? Thanks
bb
__________________
For Sale: 1982 MB 300TD 1995 Chevrolet Suburban 6.5TD Sold: 1980 IH Scout Traveler- Nissan SD33T Diesel |
#42
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So, no pics out there? I have searched and searched, but can't find anything beyond "no pee streams". So, is that the most important thing to look for, any little streamers (a uniform mist)?
bb
__________________
For Sale: 1982 MB 300TD 1995 Chevrolet Suburban 6.5TD Sold: 1980 IH Scout Traveler- Nissan SD33T Diesel |
#43
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bump?
__________________
http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42 |
#44
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Some work I did with my tester in bosch injectors for my GM 6.5 here http://asnowsquall.smugmug.com/gallery/1424687#67645826
Some pictures and some video.
__________________
Currently driving a very clean 1985 300SD from the West Coast. |
#45
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Quote:
__________________
84 300D, 82 Volvo 244Gl Diesel |
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