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peter t

Drilled camshafts.

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Posted (edited)

Hi does a drilled camshaft have a plug in the end and if so what sort of plug is used.  I have a spray bar but the engine builder originally  stuff my cam as he used silicon and blocked the spray bar. He fitted a new cam that is drilled but I have just noticed there is no plug in the end. The spray bar  is still fitted. I also change the oil every twelve months but it is really black in there. Thanks in advance for any advice.

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Edited by peter t

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5 hours ago, peter t said:

Hi does a drilled camshaft have a plug in the end and if so what sort of plug is used.  I have a spray bar but the engine builder originally  stuff my cam as he used silicon and blocked the spray bar. He fitted a new cam that is drilled but I have just noticed there is no plug in the end. The spray bar  is still fitted. I also change the oil every twelve months but it is really black in there. Thanks in advance for any advice.

To clarify the test in bold above: there is NO gallery plug in the back of the internally oiled camshaft?
If it is indeed not there, that is NOT CORRECT - your camshaft and rockers (actually finger followers) will run dry due to lack of oil pressure coming from the camshaft oil gallery holes.
The plug is available from Nissan.

And I suggest you sack your engine builder...

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Thanks I still have the spray bar fitted so I guess it would be getting some oil.

 

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10 minutes ago, peter t said:

Thanks I still have the spray bar fitted so I guess it would be getting some oil.

 

Barley... With little to no oil pressure to the cam lobes, I wouldn't be running the engine for long.
BTW, the spray bar should not be used - the block-up easily and have a tendency to crack.

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