Valve train noise: ST heavy double and Maruha SUB
#1
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Join Date: Dec 2015
Location: Brisbane, Queensland, Australia
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Valve train noise: ST heavy double and Maruha SUB
My newly build engine (dyno time only) has been set up with ST heavy double springs and SUB lifters.
At idle, it is substantially noisier than my stock NB. Valve train noise settles once off idle.
It was set up with factory clearances (which I have not checked myself).
Is increased noise to be expected with the heavy double springs?
At idle, it is substantially noisier than my stock NB. Valve train noise settles once off idle.
It was set up with factory clearances (which I have not checked myself).
Is increased noise to be expected with the heavy double springs?
#3
Agreed. Checking and changing lash can be done reasonably efficiently, especially if you are lucky enough to have the Mazda SST, but once you venture into SUB land, that goes out the window as any change requires removal of the cams, and then refitting, retorquing the cam caps each time to get the correct measurement. Very painful.
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