that doesn't sound right, most overdrives should provide about 27% gearing increase when engaged, but if the engine is tiered I suppose it mightn't have the puff to push it.
Sounds like it might have been a bit of a sloppy install. None/few of the army fitted holdens seemed to be done "nicely" See if you can tidy it up somehow.
Mines a 73 SWB s3 with a 186. I added a toro overdrive, and it sounds better at over 50 km/h however the top speed hasn't really changed. I got 91 km/h without OD, and 94 km/h with.
Mind you - my engine is tired too.
that doesn't sound right, most overdrives should provide about 27% gearing increase when engaged, but if the engine is tiered I suppose it mightn't have the puff to push it.
1994 Discovery TDi
2004 Discovery 2 TD5
2010 Discovery 4 TDV6
1961, Series 2 Ambulance. 108-098 - Eden
Registry of Ex Military Land Rovers Mem. 129
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I'm being a little off thread with this post. However I recently had Inc. upload the original booklet supplied with the Johnson's Holden Engine Conversion kit.
The .pdf file is in the downloads section under Technical Manuals.
http://www.aulro.com/afvb/local_link...&id=53&catid=7
Although that said - I wouldn't be using the Johnson modification for the clutch, I would be going a completely different route by changing the pressure plate.
C Ya
Diana
You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
It's maths, Phoenix. Gearing changes torque but not power (power = torque x rpm. Use a gear to increase RPM by 25% and you also decrease torque by 25%). So adding overdrive only moves the RPM down, to a more economical point It would only give increased speed if gearing was the limit - and in reality it's lack of power and lack of aerodynamics. You'd get more speed out of removing the roof, folding the window flat and fitting a cover over the unused seats and load space - like a 30's sports car. Just add leather helmet and goggles.
Steve
2003 Discovery 2a
In better care:
1992 Defender
1963 Series IIa Ambulance
1977 Series III Ex-Army
1988 County V8
1981 V8 Series 3 "Stage 1"
REMLR No. 215
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