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Awesome build. Keep the pics coming. Funny I was just looking on FB marketplace to see if any of those QS Suburbans were on there. Several of the trucks were.
Awesome build. Keep the pics coming. Funny I was just looking on FB marketplace to see if any of those QS Suburbans were on there. Several of the trucks were.
There's one in Houston on FB, just coincidentally noticed it last night while cruising other trucks. Ehhh, tried to post the link but it's not working, so.. anyway
If only it were a 2004 with a returnless fuel system a few things would have been easier. My 2003 has a return style fuel system, so I decided to try the Corvette fuel filter / regulator since I need a provision to return fuel to the tank. The “NNBS” fuel rails I got from the junkyard were cut on the metal fuel rail side, opposed to the fuel supply line. I cut the fuel rail metal supply flush, right before a little jaunt. Hopefully my 3/8 compression to -6AN doesn’t leak!
With the Corvette regulator filter the fuel supply and return lines get pushed towards the firewall and would kink them, so I had to do something different. This is what I ended up with.
Well, good news and bad news. My plumbing leading to the rail doesn’t leak, but the rail does! It’s leaking right where the inlet tube meets the upright to the rail and cross over. I suppose while I was wrestling to get the tube cut and the compression fitting on I tweaked the joint. The OEM design had a support for this tube, but since mine was cut right at the support, I had to cut it right after the support (leaving it unsupported).
Anyone know if these OEM stainless steel rails are constructed using brazing or a silver solder? I may try to fix and build a support. One day at a time!
Took way to long to fabricate a bracket for the degas / intercooler reservoir and pump bracket. I’ve seen other “NBS” owners mount it over on the passenger side between the fender and the a/c plumbing, but I was trying to keep it near where the NNBS location is / as designed, not that it really matters. The idea was to not have to cut up the hoses and to repurpose everything the best I could, and I probably should have mentioned I had this kit on my 2010 Silverado about 10 years ago.
Hopefully things don’t get too toasty up there. If so I’ll have to whip up some radiant heat mitigation of some sorts.
Intercooler reservoir, pump, and heat exchanger plumbed and ready to go. E-fan from 2007 Yukon installed as well, just need to wire power, ground, and PCM control.
It’s alive! Had to pop one of the intercooler / heat exchanger lines off since it was air locked and not circulating. Other than that it purrs like a kitten. Need to get my BAP and wideband installed, and also work on the IAT transfer function in the tune. I ended up using a Bosch 1 bar TMAP sensor and it has an S shaped curve opposed to a typical non-linear curve. Oh also ordered a NNBS VMV and that needs be in stalled.
Nov 10, 2022 | 02:18 PM
