Gernot writes:
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Folks,
I am sure this subject has been beaten to death, but I either have slept
deeply or didn't pay attention. But today I took the oportunity to
purchase a (more less complete?) injection system for 70 ukp. Thus I
need some advice.
my car is a 74 left hooker with 175 strombergs, all emmission stuff
removed, tubular exhaust manifold.
It consists of three manifolds (of course) including injectors, lines,
dizzy and metering unit and airbox.
Now, question, a) what else do I need apart form a high pressure pump.
petrol tank? blanking plug for mechanical pump?
different throttle linkage?
b) what do I need to check the system for while it is out? I checked the
throttle linkage for wear but there is no play whatsoever. Can I take
the injectors apart and clean them or whatsoever and if so how, same
applies to the metering unit.
c) I suspect that it is a 130 bhp system coming from a saloon or estate,
anything I need to change and how do I see if its this, may be part
number for the inlet manifolds?
Thanks, Gernot
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Gernot,
You will want to pop off the head and have it shaved down. Your
car has about 7.75:1 compression ratio. The PI is designed to
work with a CR of closer to 9:1. You'll get more power, too.
Beyond that, I know nothing about PI. Good luck
Dave Massey
St. Louis, MO
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Gernot Vonhoegen <gernot.vonhoegen@stir.ac.uk>
Subject: water pipes TR6, which one where?
When I removed the old cast manifold to fit a tubular exhaust, I
realized once more, that the dpo had closed off the pipe that is coming
out of the water pump and goes to the rear of the engine. Now my
question is, what hose should be connected to this pipe and if it goes
to the heater, where else go the other hoses? Right now the heater hose
goes to the tap and the other one to the manifold. As I want to change
the car over to injection, there is no heating of the injection
manifolds afaik.
Is that too confusing?
Gernot
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Gernot,
There is a piece of steel tubing connected to the rear of the water
pump that runs the length of the engine and ends at the back with a
double connection. One connection recieves the hose from the heater
core, and the other connection recieves a hose from the intake
manifold. Of course the other hose from the heater core connects to
the valve and the other hose from the intake manifold connects to a
fitting on the water pump near the thermostat.
There are two water circuits, one for the heater core and one to warm
the intake manifold. The water comes from the engine through the valve
to the heater core, then the water returns to the engine via the metal
tubing to the back side of the water pump. The warm water for heating
the manifold comes from the fitting on the pump near the thermostat,
runs through the manifold and returns to the engine in the same way as
the heater core water does.
Since you will be removing that manifold the above discussion is
acedemic. There is probably another style of tube for the PI
applications, but as I said I know nothing about PI.
Dave
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