Slant six intake manifold flanges, anyone got a cad file?

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Valvebounce

Valvebounce

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Im looking at building a custom three carb manfold for a 225. A mate of mine works at a place that can do wate jer cutting of the aluminuim for the flanges. Ive got gaskets for the carbs. But I don't have a spare manifold to copy the flanges off. (Its still on a running car)
They charge $100 to fire up The machine. (My mate is going to.try get a better deal) So it makes good sence to.get both lots of flanges done in one hit.

Does anyone have a cad file for the flanges? I could just buy a ready to go manifold. But theyre like $500. Im pretty sure i can build for half that
 
If someone can get me the critical dimensions, i can draft it for valvebounce.
 
but if your up to some water jetting, crank out a few LA intake flanges for me~!
 
That ebay listing doesn't state if they're made from steel, or aluminium.
Plus I'm in New Zealand. By the time I got them sent here and took a hit on the dismal exchange rate getting them cut locally will definitely work out cheaper.
Here's a picture of the carbs I'm. Going to use. Based on the engine they came off, they should be spot on size/jetting wise for a 225. Plus every Chrysler in line six (225, and the hem six) that I've ever run headers on has had an awful off idle.stumble due to the loss of the hotbox. Plus the Australian made Carters (made under license by email) were very hit and miss. The absence of an accelerator pump on these carbs also makes them very frugal on gas. (When they're driven nicely)

20180727_175232.jpg
 
Those look like SU carburetors. Nasty.
 
What size of SU? HS6? I have long thought that a triple SU setup would be very effective on a slant six.

Would a tracing of the manifold flanges help? I have one laying around -- I could trace it and scan the tracing.
 
There is a CAD-specific Forum on slantsix.org, but I believe only a pattern for a Manny gasket is there as of
now, no header or intake flanges yet....... there are a
few other items there as well, check it out and post there.........
 
Take a gasket to a community college CAD class and have a student do it up. My sis could do it but getting her to actually do it would require me to go over there and drink beer, and sit up on the roof patio 3 blocks from the beach, and probably go back under her 560SCE and see why her A/T wont go into D.....You could probably do it with some free CAD programs. I think you would just need to:
make a rectangle with polar coordinates (easiest) ,
then chop and radius the corners,
then do same for ports and clone them with a known offset taking into account that the offsets are different in the middle,
Then cut them up
its almost easier to draw it on a drafting board with a T-square but you cant get that into a DWG or DFX file....
 
I think the problem is he doesn't have one available to take measurements from. The flange dimensions are not the same as the gasket dimensions.
 
mvh said:
What size of SU? HS6? I have long thought that a triple SU setup would be very effective on a slant six.

Would a tracing of the manifold flanges help? I have one laying around -- I could trace it and scan the tracing.
Click to expand...

So long as they came out at 1:1 then that should.work. I not only don't have a manifold handy to trace, but also no scanner. (I'm a bit of a vege at technology)
If you were able to.do that and email it to me, that qould.be awesome!

I have no idea about which model.carbs are. They're all one and three quarter inch. And their original application was two of them feeding a 2500cc engine. Based.on that three of them should be damn near spot on for a 225. All three came off running engines. And the guy said these are the later model ones which utilise ball bearing slides on the dash pots. So they're a lot less inclined to get stuck.
Best part was the price. $60 for all three of them. Although the port spacing means equal runners would be hard to do, they should still.be more equal than the stock manifold.
 
1-3/4" is an HS6, I believe. Sounds like you got them off a Triumph TR6. I can confirm the scans are actual size by putting a scale bar on them -- check the scale bar on the printout to make sure it is at 100%. Of course, it will have to be tiled across multiple pieces of paper unless you have a large format printer, or you could take it to a copy shop and have it printed on a roll-feed printer. I can do the tracing this weekend.
 
mvh said:
1-3/4" is an HS6, I believe. Sounds like you got them off a Triumph TR6. I can confirm the scans are actual size by putting a scale bar on them -- check the scale bar on the printout to make sure it is at 100%. Of course, it will have to be tiled across multiple pieces of paper unless you have a large format printer, or you could take it to a copy shop and have it printed on a roll-feed printer. I can do the tracing this weekend.
Click to expand...

They're actually off a triumph 2500 sedan. (I'm not sure if you guys got them over there?) They were the top selling car here for a few years. (Pretty sad really)

I went and saw my mate with the water jet cutter last night. He said he can work with that scan.
I'll PM you my email.
 
I can do you one better. I have a cad file I created in cad when I was in highschool of a wire frame of a 3 barrel manifold. I have to dig through my email after work to see if I can find it. It has the flange profile you need.
 
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