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inlet restrictors
Posted: Sun Oct 11, 2009 6:55 pm
by Jules
I've been told and have read that the stage 1 3.5l engine was de-tuned considerably because LR thought it was too powerful. There is a restrictor in the inlet manifold. Is this part number RTC 2320 please?
Also, does anyone know what other things were done to de-tune the engine?
Cheers,
Jules
Posted: Sun Oct 11, 2009 8:55 pm
by map1275
There is restrictor in the manifold below each carburettor. Therefore two per vehicle.
Depending on precisely which model you have, the distributor advance maybe different. Needles are simply vehicle specific, as the Ser III weighs a lot more than a Range-rover etc. Otherwise that's all! However there was a concurrent range of engines in other vehicles with different outputs.
compression
Posted: Mon Oct 12, 2009 7:44 am
by sebking
Engine is also of a lower compression ratio so it runs ok on crappy fuel - eg two star!
Same as 101, RR was higher.
Seb
Posted: Mon Oct 12, 2009 11:18 am
by 5988
RR was higher
not entirely true , most of the rr's made around the same time, and defiantly most from the 70's also ran 8.13:1 CR
my engine is from a 1979 RR and is 8.13:1 , as is by dads 75RR
as said the carbs are probably jetted differently, and distributor advance may be different , but that's about it
Posted: Mon Oct 12, 2009 4:22 pm
by Jules
So the cams weren't designed to lift the valves less (as someone explained to me)?
Got a picture posted on the introductions page now!
rr's
Posted: Mon Oct 12, 2009 4:31 pm
by sebking
should have checked my list. some RRs were higher
Posted: Fri Oct 30, 2009 9:51 am
by landdani
Posted: Fri Oct 30, 2009 3:39 pm
by Jules
Those be them!!!!!
They're coming out next weekend ( I would do it this weekend but there's a beer festival on).
Posted: Sat Oct 31, 2009 5:18 am
by disco2hse
You will notice a significant increase in power, and I found a lower fuel consumption too but not sure if it is directly related to that.
