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spuggy spuggy is offline
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Join Date: Jul 2003
Location: Glorious Pac NW
Posts: 2,796
Quote:
Originally posted by RarlyL8
It's hard to read but it looks like if you pick 20*C from both graphs the ranges overlap. That is what I was refering to with my comment above.

I would expect the stock factory specs for cold pressure and system pressure might be significantly different but I do not know that for a fact and cannot read it from the pictures.
Brian, they sure were pretty hard to read.

The 930/5[13] and 930/66 graphs are quite close at some temperatures, but the slope's different - they give different values elsewhere.

You'd be roughly .4 bar too high @ 10 degrees using a 930/66 graph for a 930/51 or 53 WUR, for example, and at 35 degrees, you'd be .2 bar too low using the 930/66 graph.

Admittedly, they're pretty close around the middle of that range - guess it all depends where you live how significant that is...

Here's the data anyway:

Pump Delivery: min 1170 cm^3 per 30 seconds (both pumps together).

Cold Control Pressures for Part # 911.606.105.02 and 930.606.105.00

Bosch part # 0 438 140 016 and 0 438 140 022


Deg: Min Max

10: 0.45 0.825
15: 0.75 1.125
20: 1.05 1.45
25: 1.375 1.75
30: 1.675 2.075
35: 2.0 2.375

Control Pressure Warm: 2.6 - 3.0 bar (atm)

System Pressure: 6.0 - 6.7 bar (atm)

Leak Test:

Min after 10 minutes: 1.7 bar (1.8 atm)
Min after 20 minutes: 1.5 bat (1.6 atm)

Injector Opening Pressure: 2.1 - 3.2 bar (atm)

Idle Adjustments

Idle Speed: 900 - 950 RPM
950-1000 RPM (1977 model)

CO Level:

930/51 1 - 3 %*
930/53 2 - 4 %*

* air pump disconnected
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'77 S with '78 930 power and a few other things.
Old 04-27-2007, 01:01 PM
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