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First post here, I have tried searching but can't find anything relating to this query.
I have just removed the Exhaust Manifold off the GQ RB30 as it was leaking / noisey.
The what I think is the EGR pipe that goes into the end of the exhaust manifold was so tight / rusted that it was unable to be undone. I ended up cutting the pipe clean enough that I could rejoin it.
On inspection it looks like the exhaust manifold is cracked so I will need to replace with one from a wreckers or buy a set of extractors. Does any one know if this EGR pipe is needed for the engine to perform correctly and if extractors on the RB30 makes much difference?