FJ40 Mark/Downey Header

[65swb45]

If anyone is interested in picking up the torch on this, I have approximately 30 new manifold flanges sitting on the shelf I had laser cut before I pulled back on production.

More like 20

 

[brian]

how much for one or two of the flanges?

 

[Green Bean]

More like 20View attachment 2833360

Mark: Nice rabbet joints on your shelf units.

 

[65swb45]

how much for one or two of the flanges?

Seriously? If you are serious about taking this on, you should buy them all.

 

[brian]

ok how much for all of them?
i have the means to cut my own once i draw the program.

 

[65swb45]

Mark: Nice rabbet joints on your shelf units.

Thanks, but I can’t take credit for those. My best friend from college, the one I wrote the Elephant Man essay about, made those shelves for my mother in law.

A small footnote of history: when I bought the property across the street from my shop 42 years ago, the original plan was to open a cabinetry business with him.

 

[gonzopancho]

Seriously? If you are serious about taking this on, you should buy them all.

Did these sell? If not, I’d like a price (DM) on all of them.

Then I just have to find a Downey header, and get a few prototypes done to work out the kinks and get it quoted.

Then the rest is working with Mark on getting the other pieces made. (Not clear if he makes them or I make them under license or what.)

We do a lot of work with a couple metal shops, and bringing back NLA stuff is what I love.

This is the most recent design to head to small volume production. It’s replacements for the NLA parts on an 80-series dual filler neck. Not shown: the machined shaft.

 

[65swb45]

To ANYONE who is seriously interested in moving this forward, please honor my signature line and my four decade commitment to the old school by reaching out to me via the telephone.

 

[gonzopancho]

called, left message.

 

[Brian/99uzj100]

These headers are the best seat-of-the-pants bolt on mod I've installed, along with a 2.5" exhaust.
20 years old and still going strong.

Here's the engine being pulled for a rebuild

I keep paper copies of the smog exemption and the sticker for the smog shops.

 

[Brian/99uzj100]

Here's a kit I found in my photo library

parts list from original installation instructuons:

 

[EWheeler]

This is a Marks header on a 1970 F motor

View attachment 2818885

Im curious how you got your F intake to work with your marks header. I tried to install a used one on my ‘69 today and the intake interfered with the header tubes....
I had to use a 2f intake to make it work.

First pic shows where header tube hits F intake, next two pics show misalignment of holes due to interference, and last is just a photo of header mocked up setting on the fresh manifold studs.

 

[kevos37]

Mark: Nice rabbet joints on your shelf units.

I saw the joint you referred to. Those look to be a dado joint not a rabbett . With possibly a half lap joint thrown in, would need a different perspective. But a meticulously crafty joint to say the least.

KevO

 

[gonzopancho]

More Gee Whiz information:
If someone can move forward with using their existing Downey Header as the pattern for a Header manufacturing shop, they then could buy Marks remaining top Header flanges to build the first batch, keeping in mind that many a stainless steel Header does NOT have a stainless steel top flange. Then Mark or I could develop the necessary kit/pieces (including the exemption decal) to make those Headers smog legal. Harder than finding a shop who is willing to build the Headers is finding a shop who is willing to build the Headers in smaller affordable batches.

I think the easy path to re-activating the CARB exception is going to require you or Mark to lend a hand, as it were.
See 6(c) on page 24 of https://ww3.arb.ca.gov/board/15day/ampts/proceduresfinal.pdf

I think the rest of this is now doable, and in-progress. (We can go PM or phone to discuss details.)

 

[65swb45]

The deal is done! Gonzopancho has purchased the flanges and the rights to the header. I look forward to seeing them on the market again.

 

[Firemedic831]

Will Buy one when they are ready

 

[FineWynsFJ40]

Count me in for one on my '74 F.

 

[zidaro]

Id love to be added to the purchase list! @gonzopancho Stoked your picking up the torch!!

and also looking for more info on the conversion required to run this header with a stock intake '68 1F . What may be needed for fitment?

 

[EWheeler]

Id love to be added to the purchase list! @gonzopancho Stoked your picking up the torch!!

and also looking for more info on the conversion required to run this header with a stock intake '68 1F . What may be needed for fitment?

Post 20 sheds a little light:

71 FJ40: what is this port too

Hey guys! I’m trying to figure what this post goes too. This is off my 71 FJ40 with the F engine in it. Any suggestions?

forum.ih8mud.com

 

[peesalot]

I am interested in how the manifolds fit, as pictured above there seems to be an issue, is it a BFH solution or are the manifolds in pic not supposed to play together ?