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oil filler neck question

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Old 07-04-2014, 04:03 PM
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MjRocket
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Default oil filler neck question

What is the difference between a metal oil filler neck and the plastic ones?

Why did they switch material?

Which is better and why so?
Old 07-04-2014, 04:28 PM
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joejoe
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Probably cost. The newer (plastic) ones seem to split and leak on the seams. At least the one stuck on my '86.5 leaked.
Old 07-04-2014, 06:38 PM
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worf928
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Metal us better if you are staying stock and pre-GTS. The plastic ones warp at the corners after a while and have to be replaced.
Old 07-04-2014, 07:30 PM
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Crumpler
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Interesting.
In my 86.5 I had a metal baffle and metal filler neck.
Wonder how and when they transitioned to plastic.

Last edited by Crumpler; 07-04-2014 at 08:45 PM.
Old 07-04-2014, 07:40 PM
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MjRocket
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Originally Posted by Crumpler
Interesting.
In my 86.5 I had a metal baffle.
Wonder how and when they transitioned to plastic.
Probably right between the 86.5 and 87...As my 87 has the plastic one which is now leaking.

Thinking of switching to the metal one.
Old 07-04-2014, 08:01 PM
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Adamant1971
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My 87 has a metal one, and it was original. Perhaps it depended on how deep they dug in the parts bin.
Old 07-04-2014, 10:36 PM
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Bertrand Daoust
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Originally Posted by MjRocket
Probably right between the 86.5 and 87...As my 87 has the plastic one which is now leaking.

Thinking of switching to the metal one.
You can still use your plastic one but use the paper gasket that the metal one takes and/or some Hondabond.
I just re-insatalled mine using the o-ring, paper gasket and Hondabond.
With all this, it should not leak. Hope so!
Old 07-05-2014, 10:32 AM
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worf928
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AFAIK, some time in MY'87 is when the metal necks ran out. Some early '87s have them. Usually, a metal neck comes with the early S4 intake.



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