O-ring Upper Plenum

[STOUT74]

Here's a couple of pics of my upper intake plenum that we o-ring'd today. This is a new service we'll be offering to the SyTy community. We can o-ring your upper intake for $75.00 plus shipping, for those that are interested. This does not include removing the webbing like in the pics, I just did that for mine. If interested, just PM me.:tup:

 

[Throws]

Re: O-ring Upper Plenum

Here's a couple of pics of my upper intake plenum that we o-ring'd today. This is a new service we'll be offering to the SyTy community. We can o-ring your upper intake for $75.00 plus shipping, for those that are interested. This does not include removing the webbing like in the pics, I just did that for mine. If interested, just PM me.:tup:

Curious.... what the benefit in removing the webbing?

-P

 

[STOUT74]

Re: O-ring Upper Plenum

Better flow across all the cylinders in theory, we'll see if it works. Plus I wanted to keep a "somewhat" stock look:roll:.

 

[0966Sy]

Very cool! What is the OD of that o-ring? Must be huge!

 

[SyTyAddict]

Re: O-ring Upper Plenum

I like the idea of o-ringing the intake plenum, (IIRC) especially since the the intake gasket was discontinued, and having less places to form leaks. :tup:

Better flow across all the cylinders in theory, we'll see if it works. Plus I wanted to keep a "somewhat" stock look:roll:.

Did you knife edge the dividers in the lower intake? I know there was someone talking about removing the dividers in the upper plenum a while back, better never saw anything happen. I'm curious if this help air distribution in a real world application, it theoretically should help in to even airflow in if pushing lots of boost.

 

[sy605]

Re: O-ring Upper Plenum

Get with RENZ and O-ring his spacers. Then we can keep our intake OEM and just bolt on a double O-ringed spacer.

How much for that? That's what I want.

 

[sytyguy]

Re: O-ring Upper Plenum

I like the idea of o-ringing the intake plenum, (IIRC) especially since the the intake gasket was discontinued, and having less places to form leaks.

I too like this idea, but let me clear up one piece of misinformation....the lower intake to head gaskets were discontinued from VR, but NOT the plenum gasket. Not yet.

 

[MikeRenz]

Re: O-ring Upper Plenum

this is sweet....how are you going to form the o-ring itself? Or do you just plan on using straight piping and fuse the ends together somehow?

 

[i8av8]

Re: O-ring Upper Plenum

nice werk!

was curious about the webbing, tho. since you removed the webbing on the upper intake do you think it would help to file down to a point or round off the walls on the lower webbing for even better flow? in theory, of course.

 

[STOUT74]

Re: O-ring Upper Plenum

Very cool! What is the OD of that o-ring? Must be huge!

I used .110 o-ring material. Just cut it to length. The o-ring groove has a -.015 fit, so the o-ring fits in there nice & tight. I don't see any need to glue or fuse the ends together, I cut mine just a hair long & squeezed it into the groove. I may put a dab of some black gasket maker at the seam when I install it just for a little insurance, but I don't think it'll really need it.

Did you knife edge the dividers in the lower intake? I know there was someone talking about removing the dividers in the upper plenum a while back, better never saw anything happen. I'm curious if this help air distribution in a real world application, it theoretically should help in to even airflow in if pushing lots of boost.

I rounded the dividers on the lower intake rather than making it like a knife edge, I was trying to think more like hydrodynamics, trying to make the air "flow" as easy as possible. The idea is to try & help out those back two cylinders when running max boost, somewhere north of 25 psi

 

[i8av8]

Re: O-ring Upper Plenum

sorry, i missed that completely.

 

[Don W.]

Re: O-ring Upper Plenum

I used .110 o-ring material. Just cut it to length. The o-ring groove has a -.015 fit, so the o-ring fits in there nice & tight. I don't see any need to glue or fuse the ends together, I cut mine just a hair long & squeezed it into the groove. I may put a dab of some black gasket maker at the seam when I install it just for a little insurance, but I don't think it'll really need it.

Now that you have the length find a bearing/hydraulic supply house, they should be able to order a continuous ring. Probably not a lot of $$ either. Otherwise a dab of stuff will work. Any leak would be real tiny anyway. Neat project.:tup:

 

[0966Sy]

this is sweet....how are you going to form the o-ring itself? Or do you just plan on using straight piping and fuse the ends together somehow?

I would assume he choose an o-ring the length and thickness required to sit inside his groove. I'm curious as to how much the o-ring cost is for a replacement? I would guess around 5$.

I like this because using a high temp buna o ring will last over and over with the plenum being removed. Unlike tearing up a gasket every other time