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Hey Ken, the adhesive provided by Holley was CB200 which was expired via Summit Racing. I just replaced it with the same thing, trusting the Holley engineer's choice. I made some phone calls into ClickBond to try and verify ethanol compatibility but I was referred to one of their engineers and I...

Venting surge tank - The surge tank by design is suppose to always be full of fuel so trying to extract any air out of the top seems pretty futile to me. If anything it increases the risk of fuel leaks if the air/fuel separator fails. In a typical installation application for the Phantom there's...

Have a peek inside the tank from the sender hole to see if there are 2 cross through tubes. It almost looks like they built a complete left hand tank and then they welded up the original tube with end plates. If that's the case it would be an easy fix to open it back up. Either way you might...

Hey Kyle, let me know if you're missing any other misc parts after delivery. I have some left overs from my build that I don't need. Wiper motor, mirrors, steering wheel, first gen seats, etc And congrats! That's a nice score, the steering rack will be an easy fix. Interesting to see how you...

Neil, the way Hydramat is designed the micro orifices "close" when they're not sucking fluid so this design should work and Holley themselves recommend this configuration.

Wise modification Mason! Since you've probably done some digging into this I was wondering what you think is a reasonable lifespan is for your fuel cell?

Hey Alex, I forgot all about you, you're too OG. Probably the first guy to modify the tank. Thanks for sharing.

Thanks Joel, appreciate the compliment.

Here are a couple of shots of the build. The car is finally back on the road again. Before filling up the tank I took the opportunity to do a low fuel level test drive with 1.5 gallons in the tank. I did the hardest left turns I could do in a local parking lot, not quite high g driving but...

I've been held up for a couple of weeks waiting to get a hold of a non expired ClickBond tank adhesive system to fasten the HydraMat down onto the bottom of the tank. Summit sent me 2 bad ones and a Holley drop ship ended up in back order. I finally called around and found one at FlightShop.com...

Unless you have some amazing build skills you might want to consider used or cheap throwaway tires. New tires will spend the prime of their life just drying up while the build is in progress. You can then pop some fresh tires on when you're all done. Also concur with Joel but for a different...

I've been making some progress with the tank modifications. It's mostly done but before installing the HydraMat I thought it would be a good time to run some before/after tests with the new chamber+trap door to get a feel for the kind of improvement that can be expected in the real world. I...

Yes I agree Neil, need to put one of those items on the list.

I see what you're saying Howard. From a tank connection safety perspective that is really safe, you've only got a pickup and a vent connector both on top and both have rollover valves installed so if you go upside down the only fuel that can burn is what's left in the lines. The only improvement...

Awesome Frank, looking forward to seeing the finished product.

I think that's a really good plan Frank for the configuration you're describing. How do you plan to route the fuel line into engine compartment? For a more conventional SLC tank setup where the tank span leaves room on the side or the pumps are external I see a few issues with the sump in the...

Thanks for the input Howard. The tank is a little over 10" wide so that does cut down on the hydramat possibilities quite a bit.

Thanks Neil, I'll read up on 5052-H32. You can weld different aluminum alloys together right, is that a correct assumption?

Hey guys, I'm looking to modify my gas tank to improve scavenging performance for the primary/lift pump. I already have a really nice Radium all in one regulator/surge tank setup that works well and I'm also happy with the lift pump itself. I like the external serviceability I currently have...

My car was pre "crate" and came as a roller, the installed rear shock is the DD303 referred by QA1 as "Double adjustable proma star". Unless you're using a spring compressor I would not exceed 8" spring in the rear, you can almost barely get that one in by hand. Longer is technically better as...