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Fuel starvation in 3rd gen--solutions?

Old 04-14-07, 02:03 PM
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Originally Posted by ptrhahn
Chris,
I'd love to have one of these installed for my memorial day weekend event.... get those monkeys into production!
We're working on it!

The data from the beta test group is critical. Assuming that this comes back quickly enough, Memorial day should be possible. I'm keeping my fingers crossed.

-ch
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Old 04-14-07, 02:10 PM
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Hopefully the beta testers give some good feedback. I'll be keeping my eye on this thread. Thanks hyperion
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Old 04-14-07, 02:28 PM
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I havent read all of the thread so sorry if im off or dont know wut im talking about.

But shouldnt a fuel surge tank in the engine bay solve this?
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Old 04-14-07, 03:10 PM
  #179  
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Originally Posted by junito1
I havent read all of the thread so sorry if im off or dont know wut im talking about.

But shouldnt a fuel surge tank in the engine bay solve this?
You should read the whole thread.

A surge tank will solve the issue, but will require that you:

a) place it somewhere (IMHO, the engine bay is a bad idea)
b) plumb to it with -6 lines
c) use a secondary fuel pump w/wiring and relay

For full race cars it's a great idea. My hope is that I can achieve 80% of what a surge tank does at a fraction of the cost and complexity.

-ch
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Old 04-15-07, 07:56 AM
  #180  
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i c.

Well let us know wut u come up with.
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Old 04-24-07, 11:12 PM
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Okay, updates!

I've made a few design improvements during the beta test period (which is still ongoing) and I want to thank my testers for their input. We had a successful test of the cover in another car this weekend, and there will be a few more data points in the next week or so. The test car was able to run below 1/4 tank without starvation issues on a roadcourse.

I'm waiting on some parts from a supplier, but we're getting very close to the point where I can start a production run. I don't forsee any major issues so with that in mind, I'm going to contact the rx7club.com admins and get permission to do a group buy.

Again, there may be a few changes based on feedback from the beta test group, but I think we're pretty close.

-ch
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Old 04-25-07, 08:23 AM
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Just wanted to verify that some of the beta testers have significantly modded cars? Bigger injectors in particular? The reason I ask is that I was afraid that part of my fuel starvation problems stem from the box itself not really being big enough to cover the increased fuel requirements, in which case a cover wouldn't help.

Otherwise, that sounds FANTASTIC. I'd be thrilled just to get by the 3/4 full mark again......
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Old 04-25-07, 08:41 AM
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Put me on that list, Chris. I've got an event starting the 24th of May, I'd love as much advance time as possible to get it installed!




Originally Posted by hyperion
Okay, updates!

I've made a few design improvements during the beta test period (which is still ongoing) and I want to thank my testers for their input. We had a successful test of the cover in another car this weekend, and there will be a few more data points in the next week or so. The test car was able to run below 1/4 tank without starvation issues on a roadcourse.

I'm waiting on some parts from a supplier, but we're getting very close to the point where I can start a production run. I don't forsee any major issues so with that in mind, I'm going to contact the rx7club.com admins and get permission to do a group buy.

Again, there may be a few changes based on feedback from the beta test group, but I think we're pretty close.

-ch
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Old 04-25-07, 11:53 AM
  #184  
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Originally Posted by TailHappy
Just wanted to verify that some of the beta testers have significantly modded cars? Bigger injectors in particular? The reason I ask is that I was afraid that part of my fuel starvation problems stem from the box itself not really being big enough to cover the increased fuel requirements, in which case a cover wouldn't help.

Otherwise, that sounds FANTASTIC. I'd be thrilled just to get by the 3/4 full mark again......
Well, my car is a 421 RWHP V8 running on 285 Michelin PSCups (see sig). But a list of mods for other tested cars is a great idea; I'll post that info on the GB.

-ch
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Old 04-25-07, 12:00 PM
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Originally Posted by hyperion
Well, my car is a 421 RWHP V8 running on 285 Michelin PSCups (see sig). But a list of mods for other tested cars is a great idea; I'll post that info on the GB.

-ch
Excellent! (Not that I doubted) but just wanted to make sure you had it covered.
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Old 04-25-07, 12:22 PM
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That's great news! I was contacting Fuel Safe to see what an OEM drop-in tank with bladder and surge tank would cost. I'm sure it'll be tons more than this. But if this provides the same results then my prayers are answered.
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Old 04-25-07, 11:02 PM
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I am looking forward to this.

An easy, inexpensive solution to a problem doesn't happen every day.
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Old 04-26-07, 10:01 AM
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Thanks for taking the initiative to find a cost-effective solution to this problem. I'll definitely pick one of these up.
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Old 04-29-07, 06:06 PM
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Hey all,

I've gotten some positive feedback from the beta test group, and I've had quite a few requests for this so I'm posting the official group buy here:

https://www.rx7club.com/showthread.php?t=647708

See you there,

-ch
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Old 04-29-07, 06:15 PM
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Thanks for all your hard work.
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Old 04-01-19, 01:02 PM
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Im going to try to integrate a Holley hydramat with my cut 93 tank and Hyperion surge cover. Belts and suspenders and duct tape. Must run lighter. Must run less fuel.

Even with the tank cut Id need to run 6-8 gallons min and still at risk or starve if I pushed it. I had good luck with a hydra mat in an externally pumped road race car. Im going to try to adapt one to walbro 400 pump
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