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Oil Pan Reinforcement rail
Posted by: redone76 ()
Date: November 02, 2017 09:36AM

So I need to replace the oil pan on my FC and after reading some threads on here it seems a common problem is that the pan bolts come loose from under tightening or you over tighten them and it crushes the gasket and dimples the pan. I know there is oil pan reinforcement rail kits for V8 engines to help support the gasket and pan. I work with CNC lasers and decided to make one for the corvair pan. Its .100" thick 4130 steel. I hope to install it this weekend and see how it does. What are your guys thoughts? Am I trying to reinvent the wheel here???

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Re: Oil Pan Reinforcement rail
Posted by: viewmaster ()
Date: November 02, 2017 09:43AM

I Love the idea!!! I think you are on to something. Spreading out the pressure is a good idea, from stock.

-m



Mike
'65 '500' Sedan 110 PG
'65 Monza Sedan turbo'd 110 SU conversion
Fresno, CA

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Re: Oil Pan Reinforcement rail
Posted by: mguider ()
Date: November 02, 2017 09:46AM

Seems like a Vairy good idea to me smileys with beer

Mark
Choo Choo Corvair
63 a/c coupe Driven cross country.

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Re: Oil Pan Reinforcement rail
Posted by: BobV66Vair ()
Date: November 02, 2017 09:47AM

Very pretty and should actually work. Well done. Get Clark's to carry them and others can buy them too. Those bolts will cause leaks if over or under tightened. Your piece solves that issue.

Bob Vinnacombe
Sandy, Oregon
1965 Corsa 140 stock
1966 Monza Soon to be race car
1968 Monza Parts for now

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Re: Oil Pan Reinforcement rail
Posted by: redone76 ()
Date: November 02, 2017 09:48AM

viewmaster Wrote:
-------------------------------------------------------
> I Love the idea!!! I think you are on to
> something. Spreading out the pressure is a good
> idea, from stock.
>
> -m


Thanks man! That's exactly what I was thinking. Spread the load out. I know I could buy an aluminum pan but having access to a laser and material I figured I'd give this a shot first

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Re: Oil Pan Reinforcement rail
Posted by: coleslaw31 ()
Date: November 02, 2017 09:48AM

Let us know how it goes it maybe something of interest for others.

South Carolina Upstate



68 Monza convertible 140 4spd A/C (coming soon)
66 Corsa coupe 140 4spd

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Re: Oil Pan Reinforcement rail
Posted by: gnvair ()
Date: November 02, 2017 09:54AM

That is exactly what GM and Ford do on their modern engines that still used stamped steel oil pans. They do however use gaskets with stops in them in either the form of steel washers around the bolt holes or a neoprene coated steel pan gasket. Both styles are done because the typical neoprene and cork gaskets tend to squish out.

Lee J

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Re: Oil Pan Reinforcement rail
Posted by: redone76 ()
Date: November 02, 2017 09:57AM

I'll let you guys know how it does for sure! Has anybody tried to do something like this or is it just swap to an aluminum pan? I did order some bolts that are .250" longer and have the serrations to lock the bolt.

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Re: Oil Pan Reinforcement rail
Posted by: bbakerga ()
Date: November 02, 2017 10:09AM

Is there enough room in the threads for a bolt to go in .150" farther without bottoming out?

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Re: Oil Pan Reinforcement rail
Posted by: redone76 ()
Date: November 02, 2017 10:20AM

bbakerga Wrote:
-------------------------------------------------------
> Is there enough room in the threads for a bolt to
> go in .150" farther without bottoming out?


I looked at a spare block I have and the outer bolts holes are through holes and some of the interior bolts are 1" deep. What I measured should leave .500" of thread into the block

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Re: Oil Pan Reinforcement rail
Posted by: flat_six ()
Date: November 02, 2017 10:51AM

First - this is awesome! Need to make sure the pan you are using is nice and flat. Don't rely on your plate to do that job.

Clark's may not want to offer this since it might dilute sales of their own design aluminum pan (which is excellent, by the way).

I'd consider buying one or two of these at a reasonable price. Maybe $30?

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Re: Oil Pan Reinforcement rail
Posted by: Brizo ()
Date: November 02, 2017 10:55AM

redone76, The reinforcement rail looks great and it would help, but with the early style steel pan shown, there would be a void under each bolt that the rail would bend into when the bolts are tightened. To spread the pressure evenly, the rail would need to very hard steel, spring steel, or thicker. And even then, the main cause of pan leaks - gasket compression leaving the bolts loose - would still occur. I've always thought a conical spring washer on the bolts might help keep the pan sealed longer. Most modern engine oil pans are cast aluminum with nothing but a RTV sealer/adhesive that seals so well the pan can be tough to remove with the bolts out! Some new engines with steel pans have stop spacers in viton rubber gaskets or a viton seal strip held on an aluminum gasket. It works because the set-resistant viton maintains the seal while the spacers keep it compressed just right, but not crushed. The only long term leak free combination I've found for a Corvair (no re-tightening required) is a very straight late steel pan, RTV, a paper gasket, and tight bolts.

Dan Brizendine,
'64 8door Greenbrier 140 PG. "In beautiful Wanamaker Indiana...with one stop light and 5 pizza shops"

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Re: Oil Pan Reinforcement rail
Posted by: redone76 ()
Date: November 02, 2017 11:02AM

flat_six Wrote:
-------------------------------------------------------
> First - this is awesome! Need to make sure the
> pan you are using is nice and flat. Don't rely on
> your plate to do that job.
>
> Clark's may not want to offer this since it might
> dilute sales of their own design aluminum pan
> (which is excellent, by the way).
>
> I'd consider buying one or two of these at a
> reasonable price. Maybe $30?

Pan is nice and flat. Let me see how it works on my FC and I'll get back to you on that!

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Re: Oil Pan Reinforcement rail
Posted by: redone76 ()
Date: November 02, 2017 11:05AM

Brizo Wrote:
-------------------------------------------------------
> redone76, The reinforcement rail looks great and
> it would help, but with the early style steel pan
> shown, there would be a void under each bolt that
> the rail would bend into when the bolts are
> tightened. To spread the pressure evenly, the rail
> would need to very hard steel, spring steel, or
> thicker.
I get what you're saying. The way I looked at it was that it would spread the load over the entire surface area of the pan instead of directly under the bolts. The steel I'm using is 4130...pretty hard stuff. Tighten the bolts in an even fashion with equal torque so as not to bend anything

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Re: Oil Pan Reinforcement rail
Posted by: The Stig ()
Date: November 02, 2017 11:19AM

Cool idea! I'm interested to see how it works!
Nice work.

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Re: Oil Pan Reinforcement rail
Posted by: redone76 ()
Date: November 02, 2017 11:35AM

The Stig Wrote:
-------------------------------------------------------
> Cool idea! I'm interested to see how it works!
> Nice work.


Thanks! I'll keep everyone posted

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Re: Oil Pan Reinforcement rail
Posted by: 63turbo ()
Date: November 02, 2017 11:53AM

redone76 Wrote:
-------------------------------------------------------
> Has
> anybody tried to do something like this or is it
> just swap to an aluminum pan?
>
I seem to recall a picture that was in the fastvair archives from years ago
where someone did something similar, but it was not a single reinforcement piece like you did... what I remember seeing was rectangular blocks under
each bolt... they would have been long enough to fill in the area between each
bolt. Your way is much simpler, and ought to work quite well!

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



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Re: Oil Pan Reinforcement rail
Posted by: redone76 ()
Date: November 02, 2017 12:07PM

63turbo Wrote:
-------------------------------------------------------
> redone76 Wrote:
> --------------------------------------------------
> -----
> > Has
> > anybody tried to do something like this or is
> it
> > just swap to an aluminum pan?
> >
> I seem to recall a picture that was in the
> fastvair archives from years ago
> where someone did something similar, but it was
> not a single reinforcement piece like you did...
> what I remember seeing was rectangular blocks
> under
> each bolt... they would have been long enough to
> fill in the area between each
> bolt. Your way is much simpler, and ought to work
> quite well!

Hmmm. I'd like to see that. Thanks also!

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Re: Oil Pan Reinforcement rail
Posted by: glivorsi ()
Date: November 02, 2017 02:08PM

63turbo Wrote:
-------------------------------------------------------
> redone76 Wrote:
> --------------------------------------------------
> -----
> > Has
> > anybody tried to do something like this or is
> it
> > just swap to an aluminum pan?
> >
> I seem to recall a picture that was in the
> fastvair archives from years ago
> where someone did something similar, but it was
> not a single reinforcement piece like you did...
> what I remember seeing was rectangular blocks
> under
> each bolt... they would have been long enough to
> fill in the area between each
> bolt. Your way is much simpler, and ought to work
> quite well!

Clarks sells a kit exactly like you described for the PG oil pan.

Greg in Wildwood, MO (part of the St. Louis urban sprawl)

1965 Monza Vert 110PG, Crocus Yellow with black interior and top

2006 Mazdaspeed 6
1997 Honda CBR1100XX

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Re: Oil Pan Reinforcement rail
Posted by: 2ragtops ()
Date: November 02, 2017 03:02PM

Hey redone


Put me on the list to buy one, great idea.

Bob Bauer

Show-Me Corvairs

1966 Monza Convert 140 P/G with A/C, plastic wheel with tele-column am-fm posi-traction
1966 Corsa Convert 180 wood wheel tele-column am-fm sport steering posi-traction
1965 Corsa Coupe Crown V8 mounted mid-body temporarily red lined for repair
House Springs, Missouri

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