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Plastic engine part: bonding

edsnovaedsnovaBaltimore - BCW 52 MG TD Supporting Member

Since several of you men are deeply knowledgeable in arcane fields of technical endeavor, please to chew on this: 

 

1. What is the oil fill tube on my Subaru engine made of; and

2. How do I re-shape that tube so it fits in my engine bay?

 

This thing is black plastic with a high melting point & I suspect is it a variant of Dupont Zytel (on looks and spec), but haven't yet found the Soob spec sheet that says for sure.

 

I did cut it. A 90-degree twist could put the filler hole right where it needs to be, but

 

--my stand-by marine epoxy does not really like this stuff & vice-versa

 

--fitting a metal tube or pipe in it looks like it will be more work than I want (or should need) to do (and will still require bonding)

 

I know I can't leave it like this

 

as PVC melts circa 140F.

 

If it is Zytel, a Resorcinol-Ethanol solvent would appear to be the easiest, DIY-way to stick it together...but all the Resorcinol-based adhesives I've seen so far are marketed to wood workers. Not sure if that's the stuff at all.

 

And so I turn to the hive mind of the Speedster Brotherhood. Any plastics engineers or polymer chemists in the house?

Last edited by edsnova
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Jim KellyJim Kelly2013 SAS coupe-Fiji

Ed,

 

Here's another option: Killer B Motorsports makes high-quality accessories for EJ engines.  They offer an oil fill relocation tube for guys who are adding a different top mount intercooler that hits the original tube.  Pro's: made of aluminum, so can be cut/welded if needed.  Con's: cost is $109, and you may have to modify it, adding to cost. 

 

More plusses: No worries about engine heat delaminating your fix.  It bolts to the manifold in the stock location.  I bought headers from Killer B, and they are works of art.

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