Bruceynz
Well-Known Member
what cam and heads are you running?
Have you ever verified TDC in number1?I use a straight filter with dougs headers. It's close but fits. My timing in 15 initial, 34, 8 vac. 42 total
FMJ’s without the 3-cat system – all came without the 90' adapter.
All FMJ’s with the 3-cat system did use that adapter system.
Headers are the wild-card – so can’t comment there.
Looking at these two photos, it “appears” the oil filter will be hard to get on/off if you do not use a 90’ adapter.
View attachment 27513
View attachment 27514
This photo is not applicable, per se, but shows the adapter difference, on engine. The picture on right has been flipped – so you are looking at the Right side of engine.
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View attachment 27516
The external filters use 3 gaskets – or two, depending on design. Some gaskets, the inner and larger and smaller inner gasket is made into one gasket. Most that I see now days are three gaskets.
The thicker one goes by bolt head.
The smaller/thinner one goes where bolt goes to block.
If you do not use the smaller/thinner one – you will not notice any difference – but part of the engine oil will not be filtered.
If you use the thicker gasket at block, then the larger diameter gasket will not be able to hold a good seal.
The non-90' adapter does not use the inner gasket.
View attachment 27517
BudW
Should be good (providing it is not defective or damaged).
yesHave you ever verified TDC in number1?