308 Plenum Install

I Have reused them and had no issues but I would not reuse them if they felt brittle or were deformed to the point were they did not match the ports. As far as torquing them I went by feel using new lock washers.

 

The gaskets can be reused, but I would recommend to replace it. Take care that the bushings drop not in the intakes, otherwise you will be in deep s...t, lol
Regarding the torque, if Ferrari can torque it, you should be able as well.

 

You can reuse as long as the rubber is in good condition and the holes aren't squeezed permanently into polygons. As mentioned, be aware of the spacers and the pins, and the alignment of the gaskets with the pins.

 

The correct answer is....that's depends. The rubber gaskets seal based on the "crush." In that with a new rubber gasket, the thickness of the gasket is greater than the limiting crush collar, all seals up nicely. So, measure your crush collars and then measure your rubber gasket. If the difference is great than say .020", you're all set. If both the spacer and the gasket are near equal in thickness, get new ones.

Regarding tightening the eight "under plenum" nut. If they are tight, very tight or kind of tight, the gasket crush remains the same. So, by hand and experience, snug is good enough. As clearance is tight around some of these nuts, I make it a habit to replace them with new. The factory never used lock washers on these nuts; convectional flat washers will do just fine.

What you don't want to do is proceed, presume that the gaskets are OK....then spend months tracking done that elusive vacuum leak that you created by reusing parts that looked "OK".

 

Four gaskets Glass. Replace one, do um all.

 

A wise decision

 

£8.40 each at Superformance....not too bad.

 

£8.40 UK Pound = $11.02 US Dollar

Air Intake Housing Gasket (114983), here:

http://www.superformance.co.uk/a-308/carb.htm

They can set up whatever shipping you require. I get parts from them all the time, great service. Those gaskets will fit in a regular padded mailing envelope, so shipping shouldn't be too bad.

 

(IMAGE Borrowed from SF, UK)


Glass,

I wonder if we are getting confused here. I now am.

Are we talking about the singular thin gaskets that go BETWEEN the intake manifolds (one each for a total of two) and engine block, or the one of the four (pic'd below) that go BETWEEN the plenum box and top of the intakes?



If it is the below, that is what everybody has been giving you advice on. And if you replace one, just replace them all. It is good ju-ju and good karma to do so.
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When you said the plenum gaskets I assume you mean the gaskets between the upper part of the manifold and the runners. If you mean the gasket between the head and the runners, absolutely need new gaskets. I recommend the green ones from t rutlands and not the black ones from superformance (they are not as good and a pain to remove again)

 

Superformance is a good group; they ship fast and shipping price is fair. You will save $$$ when buying 4 and shipping to USA.