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Anyone have trouble filling up gas with SRM fuel system?

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Old Sep 21, 2015 | 08:11 AM
  #16  
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my new vent was installed however at the same time Garth found that the wiring SRM used was not Ethanol safe and the outside of the wire was literally coming apart and leaving exposed wire. so SRM made a new plug for me with different wire and sent it over. we just received it Saturday so hopefully today i can have my car up and running again. Once again yet another issue that would have been caught if this was properly tested.

I appreciated the billet fixtures they made but at this point i really regret dealing with them and buying into this thing. I wanted to spend the money and not have to deal with figuring crap out, get a box and have it installed, not waste time assembling my own fuel kit. Been there, done that in my 996tt too many times. Instead a dropped the $$$ on the fuel kit and still had to deal with headaches and about a month of overall downtime due to this system and waiting for parts to fix it, or making parts to fix it, or testing parts that fix it.

If it wasn't for Garth handling this on day to day basis I would have melted all that billet crap into phallic objects and auctioned it off in this thread with a SRM logo stamped into them.
 
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Old Sep 21, 2015 | 09:03 AM
  #17  
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Originally Posted by prodigymb
my new vent was installed however at the same time Garth found that the wiring SRM used was not Ethanol safe and the outside of the wire was literally coming apart and leaving exposed wire. so SRM made a new plug for me with different wire and sent it over. we just received it Saturday so hopefully today i can have my car up and running again. Once again yet another issue that would have been caught if this was properly tested.

I appreciated the billet fixtures they made but at this point i really regret dealing with them and buying into this thing. I wanted to spend the money and not have to deal with figuring crap out, get a box and have it installed, not waste time assembling my own fuel kit. Been there, done that in my 996tt too many times. Instead a dropped the $$$ on the fuel kit and still had to deal with headaches and about a month of overall downtime due to this system and waiting for parts to fix it, or making parts to fix it, or testing parts that fix it.

If it wasn't for Garth handling this on day to day basis I would have melted all that billet crap into phallic objects and auctioned it off in this thread with a SRM logo stamped into them.
well that sucks bro
 
Old Sep 21, 2015 | 10:07 AM
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Originally Posted by prodigymb
my new vent was installed however at the same time Garth found that the wiring SRM used was not Ethanol safe and the outside of the wire was literally coming apart and leaving exposed wire. so SRM made a new plug for me with different wire and sent it over. we just received it Saturday so hopefully today i can have my car up and running again. Once again yet another issue that would have been caught if this was properly tested.
Same thing happened to my SRM kit on my 996. When I initially installed it in April, the rollover valve was a faulty design and caused massive tank overpressure issues. Just a few weeks ago the fuel pump stopped working and after we pulled everything out of the tank we traced the problem to the in tank wiring which had insulation on it that was soft, shriveled up, and literally "melting" away thus causing a short in the pump connector. I was lucky as the short occurred with a full tank of fuel as opposed to a partially empty tank where a spark could have ignited fuel vapor that would have been present (kind of brought back memories of TWA 400). I only run street gas which is not nearly as corrosive as E85 and the wiring was shot after 5 months submersed in fuel. I also had a fuel line in the kit that was beginning to swell as it was not submersible. We ended up rewiring everything with aerospace quality submersible wires, replaced the fuel lines with Gates submersible lines, and everything is working perfectly again. In both cases Sean stepped up to the plate and went back to the drawing board working to make things right. Back in April, he shipped everyone new (better quality) valves and also last week sent me a new pump on the house so now I have a spare. Yes it's annoying to spend a bunch of money on a system only to find out there are issues with and than have to spend more time and money making it right. However, I have learned over the years that is just the nature of the beast when dealing with aftermarket stuff. I tend to always go with OEM parts whenever possible as I've learned my lessons with aftermarket stuff repeatedly. With that said, hopefully everything is now upgraded on the latest SRM kits, current kits out there are retrofitted, and others can benefit from our headaches with a better and improved product.

[url=https://flic.kr/p/yUN1uH]

[url=https://flic.kr/p/xXUeyz]

[url=https://flic.kr/p/xXKGx3]
 

Last edited by pwdrhound; Sep 21, 2015 at 06:41 PM.
Old Sep 21, 2015 | 10:30 AM
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I checked on my wiring on the weekend as well. It's not looking great - as I run e85.

What wire did you use specifically and how did you re-wire the connector in the hat? I'm going to have to redo mine.
 
Old Sep 21, 2015 | 10:52 AM
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Originally Posted by LQQK
I checked on my wiring on the weekend as well. It's not looking great - as I run e85.

What wire did you use specifically and how did you re-wire the connector in the hat? I'm going to have to redo mine.
My shop rewired it. They build MoTec harnesses and have high quality fuel compatible wiring that they use. They have a special tool to form the wire ends that go in the round connector. After they rewired the connector in the hat, they used fuel resistant heat shrink tubing (the type that contains hot glue on the inside) to seal the rubber connector from fuel exposure. The rubber piece that is part of the connector under the hat is not fuel compatible either and will swell with fuel exposure (when the tank is full fuel can easily splash up onto it). Mine was beginning to show signs of very light swelling so we sealed it up. You can see in the picture below the rubber piece on the outside of the hat and then the same piece slightly swollen underneath the hat in the tank. Also check the two short 3" rubber fuel lines (one connects to the fuel pump and one to the jet pump pick up in the top of the basket) that form the upside down "V". One of mine was heavily swollen and in an advanced state of deterioration with a soft spongy outer layer. I replaced it with Gates 5/16" submersible fuel line. It's expensive at $30/foot but works great.

Connector seal outside the top hat (no swelling)
[url=https://flic.kr/p/yVFHEH]

Connector seal in the tank (slight swelling)
[url=https://flic.kr/p/yCocE6]
 

Last edited by pwdrhound; Sep 21, 2015 at 11:04 AM.
Old Sep 21, 2015 | 06:49 PM
  #21  
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Originally Posted by iTune
Just wanted to touch base with everybody as Sean an I have been discussing all this fiasco and trying to come up with something that will make everybody happy.

A little background if I may; When we first designed the 996 fuel kit we had a vehicle to test its operation prior to releasing it to the public. Obviously we wanted to make sure everything worked as we had imagined as well as test the limits before simply putting it out there. We have used the same pieces as originally installed on that vehicle since the start, and haven't even modified any of the pieces with some of the enhancements as per some of our customers requests. Sean's personal car has the same wiring, same pumps, same pieces that came on all our kits, and also has no issues with any of the above. We ran the car hard while constantly checking and monitoring all aspects of the fuel system for over a month before we manufactured or sold a kit to anyone else.

Once a few kits were out there, we had it brought to our attention that the Dorman (aftermarket) fuel vent valves we were using were intermittently faulty. They were working as intended most of the time, but there was one thing that could make them fail. We immediately switched to an OEM supplier of the same piece and have had no more reported issues. We didn't actually have any of these issues on Sean's personal car however we still attempted to recreate the problem once it was brought to our attention. We were able to get to the root cause of why it was happening and replaced all of the defective ones that were out there at our cost. John was more than helpful and patient during the process of figuring that out, and we thank him for that. We also added a separate pressure relief valve to the tank should the vent become blocked and all of the kits made from that point came with said modification.

The venting of the 997 system seems to be a problem as Mark has reported. From the day he brought it to our attention we have been trying to replicate the conditions and come up with a solution. We sent a replacement valve which we tested on a stationary car we have here, but it has no engine, so there is no way we could test it at a gas pump. I'm still waiting to hear back from Garth about whether that worked for good or not. I feel that we handled it as quickly as possible given the scenario, however I completely understand Mark's frustration.

Next up, the wiring. We purchase the wiring from a reseller who has it listed as compatible with gasoline/ethanol as well as most solvents, other fuels, oil, and high temperatures as well. This same type of wire (Cross-Linked Polyethylene TXL wire) is used on almost all OEM wiring. I've personally been building cars for the past 10 years, and using this same wiring from the same reseller with no issues. What I believe happened is that they recently switched their suppliers of wiring to an inferior one that obviously has some issue with gas/e85, as we still do have many kits out there for Audi/Porsche with no issues. We have contacted several customers and had a few who were willing to dive into the tank and check, and reported back with no issues. We are still waiting to hear back from our supplier regarding this.

Regardless, there is definitely a problem. We have decided to change the in-tank wiring to MIL-Spec tefzel aviation grade wire to alleviate the issue. For anybody who has one of our kits and has not already been contacted by us, please reach out to me via the contact info I will provide at the end of this message. There will be no cost to you and we will expedite ship it to you as well.

We want to be known as proactive when it comes to handling a situation like this. So if there are any questions or issues with anything at all, please don't hesitate to contact myself or Sean (itguy)

Kyle LeBlanc
CNC Machinist and EFI Calibrator @ Silly Rabbit Motorsport
702-502-8562 (cell)
kyle@sillyrabbitmotorsport.com

Thumbs up for being proactive on this guys. Growing pains are to be expected. Quick question Kyle. I do have the new style rollover valve that Sean sent me but have not installed it yet as I still have the "gutted" original valve that had the check valve portion removed. I did not receive the separate "over pressure" valve but would like to install that along with the new rollover valve. I did not feel comfortable installing any check valve in the top hat without the overpressure protection valve present. Can you send me the overpressure valve please?

Thank you!
 
Old Sep 22, 2015 | 09:17 AM
  #22  
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Originally Posted by iTune
I feel that we handled it as quickly as possible given the scenario, however I completely understand Mark's frustration.
as i have expressed - i do not feel that it was handled quickly at all. you told me the valve shipped express September 2nd ( 3 weeks ago ), valve arrived here last week, new connector arrived here September 20th ( 2 days ago) and it wasn't actually shipped until September 18th.

so that is 3 weeks my car sat waiting for these parts alone well actually more like 4 because Sean told me the valve shipped a week before you told me it shipped, not to mention the waiting for the other stuff.

you claim your car has been using this wiring for a while - well i don't believe that it looks any different than mine if its the same wire. given I only used it for a few weeks, before i got fed up with not being able to fill my car with gas.

also backing out that small allen pressure relief bolt didn't do anything except make it smell like gas in the car.
 
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997TT SilverSpool - 210.8 mph 1/2 Mile WR Apr 2019, 9.2 @ 168 mph 1/4 Mile Manual World Record , 3.15 60-130 mph , 2.72 100-150 mph , 1400whp E85
996TT SpoolBus - 204.6 mph 1/2 Mile 996TT WR Aug 2018, 9.5 @ 154 mph, 3.23 60-130 mph, 2.5 100-150 mph Manual Porsche World Record, 1400whp E85
997TT SlowBerry - 205.0 mph 1/2 Mile WR Nov 2018, 9.7 @ 170 mph 1/4 Mile , 3.2 60-130 mph , 2.4 100-150 mph , 1420whp E85
ESMOTOR | DO88 | TPC DSC | SYVECS | COBB | IPD | KLINE | XONA | AMS | ID | ERP | SACHS | TURBOSMART | CSF | DODSON |
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