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I'm giving a huge shout to Jenz and Ryan for helping. Ryan was able to get my car covered under my warranty and saved me a lot of money, hassle and heart ache. I owe them huge! Thank you again, it was a very selfless act to help me out. Car should be ready by the end of the week. I'm hoping to find a sliver of time to run some tests and strap it down again to see if there is anything else that needs taken care of.
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So let me blow your minds. I called GTM, got an answer from Pablo in two rings. I needed the acc belt size they're using. I had a message in 5 minutes with belt sizes, pictures and diagrams. There was a follow up call 5 minutes after that to confirm I got everything. Because of his prompt service, I was able to get all that info to the techs at Nissan and get the belt ordered in time to get it delivered by Friday. Car should be ready for me when I get in town. Sorry everyone, but my post sales service has been awesome.
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If Sam was like Pablo... Pablo won't last long at GTM, either he leaves soon or he's going to have a stroke for the amount of stress he gets from upset customers...
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Everything is put back together and running. Now the bad news... Ryan found the culprit to the low power numbers. It's only making 4lbs of boost. Now my call to GTM.
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Well at least you can start the diagnostics in earnest now! Let's hope they can find the problem and fix it once and for all cause unless you, Sam and Pablo are best friends....well I'm not sure why you need spend so much time talking to them. :wtf2:
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If you go turbo you won't ever want a supercharger again especially on this platform. |
I'm hoping we can fix it without having to get it back to GTM. I need two cars right now. I have zero time for the forseeable future. This only sheds light on the fact that I need a DD now.
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Hmm. Maybe the seals in one of the compressors are blown -- did you say one was spinning freely, as in with no resistance at all?
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The Superchargers felt fine. The traction drive system could be the reason they felt different.
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I know I'm machine gunning updates. I'll clean it later. Ryan is running a smoke test to check for boost leaks tomorrow
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Update. Ryan couldn't find any boost leaks. I'm going to pick it up tonight and drop it off to GTM before the end of the month. I'm not taking it back until that $hit is perfect. I'm not waiting more than several days either.
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I hope GTM can find and repair the problems :tup:
I like the premise and potential of the dual supercharger kit from GTM but your problems are tarnishing my enthusiasm for the kit Good luck in your repairs and I hope you'll be back on the road in no time |
Good luck! :tup:
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Car made it down to PHX. Definitely nice having balls to pass cars. I even managed 18-19mpg averaging 80mph. I found another squealing pulley. Driver side SC pulley makes a lot of noise when cold. Oil temps were170-180 the whole way except a couple time when I was passing 3-4 cars at a time. No more rubber smell either. Sam really wants the car back in the shop to take care of it. Now it's on me to get it to him.
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So need an opinion. Review the video below. Does that driver side pulley making that terrible noise look a bit wobbly?
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It looks to me like its slipping. Maybe bad tensioner or belt is a little too big/stretched.
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The belt seems really tight. The tensioner for that pulley was replaced in December. The belt should only have 2k miles on it It also goes away after the car is thoroughly warmed up (over 160)
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yea, doesn't look right... only one way to find out! HARD PULLS! lol jk
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Slipping belt would also be consistent with lower boost output. If its squealing, that also suggests slipping belt. If the pulley itself is out of round or wobbly in the center, I'd get it off of there before it wrenches itself too much... Are they aluminum pulleys? It is certainly possible for them to warp. Another possibility is bad bearings on the SC, which could also cause all of your symptoms. |
Yup, that was my call that the bearings on the SC may be the culprit!
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So........ I rode in TTurboZ's car. It may be 3 different colors (4 if you include CF), but it's so f@cking violently fast, I was absolutely stunned. I admit it John, your car is frighteningly fast in the full literal sense of the word. There was a few seconds after 3rd started hooking that my @ss puckered tight enough to uncork a wine bottle. Mine of course was less impressive given the issues I'm working with, but hey; She didn't break! I do have another video I posted below that is showing what happens with very light throttle under 1.5krpm when at rest. Not sure what to blame it on, maybe the tune needs tightened up?
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ugh dude... i commend you on your patience...
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Idle surge is kinda odd -- might be a relearning thing. But, could also be slipping belt/bad bearings too...
That's in neutral -- what does it do in gear? |
In gear and moving, it's okay. That is with just a tad bit of throttle at idle. Below is a video of idle and a couple throttle taps. Just before I started recording, the engine died and I had to restart.
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I'm not as familiar with centrifugal blowers, but I assume you have a bypass valve of some sort? If so, the bypass may be sticking. Do you see some boost at idle?
If not, could also be a vac leak somewhere. |
My wife's Altima did that exact thing on the 2nd video. It was a vacuum hose. I would rev alittle then it would almost die, then idle rough. Maybe the boost popped a hose or a leak on a connector some where. borrow a vac tester from autozone and do a quick test.
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Man, have I had a string of bad luck. So my AC hasn't been working and I went to get it fixed. I was quoted $1200 because my compressor was leaking. I shat my self quietly on that news. He asked me if my car was still under warranty. Technically it is,so he asked midway Nissan in PHX if they would work on it under warranty and basically said no way. Henderson Nissan in Vegas area offered to as well as Desert Nissan, also in Vegas (where Ryan [Jenz bf] works). Haboob came through in miraculous fashion. He has a friend who knows the GTR master tech at Avondale Nissan in the PHX area and was able to verify with them fixing it under warranty isn't a problem. Big thank you to everyone who helped, tried to help, and dealers willing to take care of me. F@ck Midway Nissan svc dept ;-)
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I would also leave a nice steaming pile of scat on GTM's door step also because it's probably from break down and reassembly of you're S/C kit. But that's good everything worked out with the A/C compressor getting repaired.
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Sweet...did you ask him about there being a possible vacuum leak?
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Met a guy at the pavilions who has a shop that focuses on Z's and G's. He offered to look at my car for free this past Sunday. I showed up and he was true to his word. Unfortunately they couldn't find the problem either. He mentioned the car looking fine under vacuum and couldn't find any leaks. We also went through all the maps. He went for a ride along and confirmed power was definitely down.lol. they said if I wanted to bring it in Wednesday or Thursday, they will take the bumper off and start looking at the BPV's and everything up front. For 75 an hour, that beats the gas and time to take it to GTM. One thing I did notice was when I floored it and looking at the boost gauge, it would get to the 4-5 psi mark and not move. The was no progressive rise after, it just stopped.
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Very cool...hopefully they can find the issue quickly and cheaply!!!
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I'm still thinking leaking bypas -- probably not fully closing (I think I incorrectly said sticking open -- but really it's probably not closing all the way, so boost is bypasssing the IM entirely, which I'm guessing is where you measure it (or at the IC?).
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BPV's set to softest setting. How in the blu f@cking horse balls does that happen? No one touched it since I took delivery. Will have more info soon.
Edit: driver side BPV tube was loose as well. They're telling me definitely over 450whp, but not for sure on if it's over 500whp on a mustang Dyno. This is of course using a butt dyno Edit: car picked up. Oil temps were sitting at 240 and not really dropping. My oil is full, albeit needs a change. My fans were kicked on. Maybe they thoroughly tested it. I'll have to wait till tonight or tomorrow morning to gauge improvement. |
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So glad this sounds to be a cheap fix and you can enjoy your car again. Chuck I have had BPVs stick but never noticed any significant spring tension loss. Not saying it can't happen but I don't think to this extent this quick.
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