Nope

Found it... bolt on the back of the ip. It had backed off and was not putting inward pressure on the rack(?). duh...

Going back to the measuring rpm problem - assuming a tachometer is fitted to the car what would be the problem with hooking up to that (before the tach amp)?

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

I dont know if that works or i not .i know they can use reflective tape on the balancer with a optical sensor to pick it up. I believe some dyno software can actually just read it off the drum if you know what the gear ratio is.

I think the tachometer sensor is a magnetic proximity sensor which gives a pulse when the pin on the balancer lump goes past - these pulses could be counted - much like the optical equivalent - I'm just uncertain if the signal conditioning would be present or not on a dyno...

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Gotta ask someone who designs dyno's.

I do a dyno test for every major change I do to my cars. I've gone from 89whp stock to 107whp with a VNT turbo and other efficiency improvements (NO additional fuel), currently its at 120whp with the injection pump maxed out. I'll be doing another one in a few weeks after I get the compound turbo installed.

The energy is far too low for a conventional induction sensor to pick up. The place I go to uses reflective tape on the P/S pulley (0.9:1 overdrive) with an optical pick up.
Tape on the crank is easier but many places don't allow objects to be on the floor in front of the vehicle.

Most of us were about something or another.

__________________
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

Only on the 617s. On the om60x this signal can be picked up from the diag box.


Perhaps the OP should update his CP/sig to let us know what hes driving. Maybe even location. There are so many Dyno's near my its hard to spit without hitting one. I have yet to do anything but turn screws and am too cheap for dynoing them.

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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

Im in washington state, not many dyno's but we have them.

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1996 s10 zr2 with a 6.5 turbo diesel
1996 c2500 suburban with a 6.5 turbo diesel
1981 300sd with a turbo 617
Monte carlo figure 8 car

I had my 300DT dynoed a few months ago. My interest was to see the difference between dIesel and wvo. I don't remember the numbers at the moment other than a 7% difference. I will find the graph and post later.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked