I may have a spare one laying around I could measure. I can check tomorrow.

 

Thank you, I’m going to be making a more affordable multi pump hanger, before I get too deep into it I wanted to make sure it could be done on my cnc machine. So OD of the top is all I need to start.

 

I’m going to be making a more affordable multi pump hanger

Cool.

If a single Hellcat pump (around 500 LPH) would provide the flow you need, here is how I fitted one to the stock hanger assembly:

Walbro 450 or 480 or 525 or Hellcat fuel pump in IS300...

This post covers how to install a big Walbro 450/470/480/525/535/Hellcat (they're all the same, externally) fuel pump into the stock hanger assembly in the IS300. Later, it covers how to implement a solid state relay for controlling fuel pump speed - so you don't simply need to have that big...

www.my.is

 

What other measurements do you need?

 

I’d say the OD is 110mm (4.331 inches)

 

I only need to run 1 pump, my buddy has been having fuel leakage issues with his stock hanger with a AEM 340 in it. I just thought this would be a pretty fun project since he needs one and I need one and I won’t be putting my motor in for an other month or two. But on the measurement size I need a munch more stuff like the height of the float body from the top of the hanger and the size of the seal. I didn’t realize that it was that small, I was thinking the OD of the top plate with the screw holes in it, I thought that was part of the hanger.

 

Here are some pictures. Sorry for the crudeness of the pictures. Just took them quick.

 

Your the best! I’m going to get this together in CAD later. I’ll let you know on anything else

 

The thickness of the top hat (what the seal rests on) would be appreciated as well

 

I will have to get that measurement a little later on. I left my house.

 

 

You are the best man. I’ll send the CAD drawings when I get off work

 

Here is a STEP file of the lid itself. I had to change the file extension to .pdf for the forum to allow the attachment.

 

Thanks but i have it in CAD already, this is the top of the hanger with the dimensions above correct? I wanted to make it similar to other aftermarket hangers on the market with the top plate that screws into the tank part of the hanger. I still need to source dimensions for that. Probably pulling my back seat to measure unless someone is there already.

 

The aftermarket ones I've seen integrate the bezel/retaining ring and the hanger itself into one unit. Personally I see no reason to do that unless you're trying to make it look fancier and are willing to use more material and more machinework than is necessary.

But you do you.

 

Yeah I see what your saying, not gonna lie I do wanna integrate it bc obviously it looks sweet, but material cost and all of that ill leave it like stock

 

This is how I'd fabricate a mutipump hanger if I were to do it. It consists of the lid I posted prior, two laser-cut 1/8" plates to hold the the pumps in proper orientation, some oetiker ear clamps to retain the pumps and some generic fittings.

The most complicated part is the fuel header, which would need to be bent/fabricated/welded from 3/8" stainless tubing:

 

This is how I'd fabricate a mutipump hanger if I were to do it. It consists of the lid I posted prior, two laser-cut 1/8" plates to hold the the pumps in proper orientation, some oetiker ear clamps to retain the pumps and some generic fittings.

The most complicated part is the fuel header, which would need to be bent/fabricated/welded from 3/8" stainless tubing:

Just downloading those AN fittings online?

 

here it is so far, two holes for -8 bulkheads, 1 for -6, the middle is for the actual rod that will hold the pumps and I will toss another hole for the wire bulkhead. not how i am going to mount the sending unit yet any ideas will be appreciated. Planning on grounding it to the tophat with some type of rivnut like PHR, but honestly could just run it through a wire bulkhead and it will be a lot easier, unless if someone has another idea of course.

 

here it is so far, two holes for -8 bulkheads

not how i am going to mount the sending unit yet

Why are there two 8AN fittings?

For the level sensor, I think the only practical approach is re-using the OEM piece. It'll probably have to be a machined part. I think you'll need to measure the OEM piece and imagineer a simple means of mechanically interfacing with it.

 

I have the stock cover plate as well I could measure white you need. Pretty sure I have it laying around. I bought an extra hanger and cover to modify when I do the return setup. So that way in case I mess something up I still have the original one that’s in my car now.

 

oh yeah forgot to mention, stock "jet valve" too. Just to save some more money. But I believe radium makes a good piece for around 70 bucks.

 

I don't see it being worthwhile for anything less than 600whp on E85. You can direct-fit a 255 pump which will take you to ~400whp on E85; and you can fit a 525 hellcat pump to the original assembly with a little finagling.

Spend your effort on something that nets an actual improvement for your car.

 

Maybe I will call it, been fun modeling everything tho. Since I’ve come this far might still end up making one just cause 🤷‍♂️. I’ve got other things that I need to deal with first so I will put this on pause.

Solidworks is never the way if you have access to the good stuff. Fusion 360 is hard to get used to as a Solidworks guy but the transition isn't that difficult. And for all intents and purposes, they're the same. Fusion is free though and more capable in my opinion.

For the fuel level sensor, a vertical float style would be a much better choice if you can make it work. No need to snake the stock one into the tank. There's several options out there but they're primarily for fuel cell use. Thy're based on a series of reed switches. (Magnet in float, float floats, trips reed switch when in vicinity) Shouldn't be too hard to fit since you're completely redoing the hanger. A capacitive fluid level sensor is another option.

Doing dedicated outlets for each pump is truly something else. there's not that much space in that area with the cover on.

I like your thinking. But fusion gave me a headache I didn’t put much time or effort into it… but hey I know solidworks and I’m no engineer just use it for random stuff when I need it. I probably won’t end up switching anytime soon. I do like that it is free, I do not pay for my solidworks so it is no change for me but it definitely allows smaller names to enter the business. ++

The free license technically allows for small business commercial use. Key word on small. Under 100k gross revenue.

No watermarks far as I know.

It does has FEA but has to be ran on their cloud on the free version.

I’ve never had success working with STLs, point clouds, and surfaces in Solidworks. I’m sure it’s possible but it’s all a little easier with Fusion.

Now, to be clear, I use Solidworks almost exclusively. My impression of Fusion is very basic so I could be completely wrong but that’s my impression so far. I’m also viewing this from a hobbyist standpoint.

 

Solidworks is never the way if you have access to the good stuff. Fusion 360 is hard to get used to as a Solidworks guy but the transition isn't that difficult. And for all intents and purposes, they're the same. Fusion is free though and more capable in my opinion.

For the fuel level sensor, a vertical float style would be a much better choice if you can make it work. No need to snake the stock one into the tank. There's several options out there but they're primarily for fuel cell use. Thy're based on a series of reed switches. (Magnet in float, float floats, trips reed switch when in vicinity) Shouldn't be too hard to fit since you're completely redoing the hanger. A capacitive fluid level sensor is another option.

Doing dedicated outlets for each pump is truly something else. there's not that much space in that area with the cover on.

 

Fusion is free though and more capable in my opinion.

Are you allowed to profit off your use of free Fusion? Is there a watermark left on models and drawings done in free Fusion? Does it have FEA? How is it more capable than SW?