The Sophia Project

SS_Firehawk · 04-16-2014, 02:15 AM

So need an opinion. Review the video below. Does that driver side pulley making that terrible noise look a bit wobbly?

Jordo! · 04-16-2014, 02:28 AM

It looks to me like its slipping. Maybe bad tensioner or belt is a little too big/stretched.

SS_Firehawk · 04-17-2014, 01:59 PM

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)

Sent from my HTCONE using Tapatalk

SgtGoldy · 04-17-2014, 02:16 PM

yea, doesn't look right... only one way to find out! HARD PULLS! lol jk

Jordo! · 04-17-2014, 04:39 PM

Quote:

Originally Posted by SS_Firehawk

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)

Sent from my HTCONE using Tapatalk

Improving as the car warms up strikes me as something is expanding a bit to make it fit more snugly. A bad tensioner will sometimes put insufficient tension until everything warms up.

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.

Hotrodz · 04-17-2014, 09:03 PM

Yup, that was my call that the bearings on the SC may be the culprit!

SS_Firehawk · 04-18-2014, 09:58 PM

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?

SgtGoldy · 04-18-2014, 10:07 PM

ugh dude... i commend you on your patience...

tturbo370z · 04-18-2014, 10:26 PM

Quote:

Originally Posted by SS_Firehawk

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?

Hahaha I'm glad u enjoyed it dude. I sooo need drag radials lol .It's nice to finally get some type of reward from it being dead and gone so long. It's hella fun and stupid fast, but we won't tell my wife

I can't wait to ride in your car when it's boosted back up proper, it will be good fun. We will def have to get together again soon and hit some car shows and meets as they come up

Orestp · 04-22-2014, 12:41 AM

Quote:

Originally Posted by SS_Firehawk

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?

Looks like the ECU might be relearning how to idle - I think this might happen if certain parts of the system have been disconnected e.g.) like if the throttle bodies have been taken off / disconnected.

Jordo! · 04-22-2014, 01:00 AM

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?

SS_Firehawk · 04-22-2014, 01:37 PM

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.

Jordo! · 04-23-2014, 01:41 AM

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.

Masterbeatty · 04-23-2014, 09:26 AM

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.

SS_Firehawk · 04-23-2014, 01:47 PM

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 ;-)

04-16-2014, 02:15 AM	#376 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	So need an opinion. Review the video below. Does that driver side pulley making that terrible noise look a bit wobbly? __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

04-16-2014, 02:28 AM	#377 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	It looks to me like its slipping. Maybe bad tensioner or belt is a little too big/stretched. __________________ Enjoy it. Destroy it.

04-17-2014, 01:59 PM	#378 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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) Sent from my HTCONE using Tapatalk __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

04-17-2014, 02:16 PM	#379 (permalink)
SgtGoldy A True Z Fanatic Join Date: Feb 2009 Location: Orange County, CA Posts: 3,503 Drives: C63 AMG - LSD Rep Power: 650	yea, doesn't look right... only one way to find out! HARD PULLS! lol jk __________________ C63 AMG LSD - Straight Pipe - EuroCharge v5 - Vossen CV7 - IG: @SuperFastYo

04-17-2014, 09:03 PM	#381 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	Yup, that was my call that the bearings on the SC may be the culprit! __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

04-18-2014, 09:58 PM	#382 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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? Mr.Squeeze, warpeacelove and tturbo370z like this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

04-18-2014, 10:07 PM	#383 (permalink)
SgtGoldy A True Z Fanatic Join Date: Feb 2009 Location: Orange County, CA Posts: 3,503 Drives: C63 AMG - LSD Rep Power: 650	ugh dude... i commend you on your patience... __________________ C63 AMG LSD - Straight Pipe - EuroCharge v5 - Vossen CV7 - IG: @SuperFastYo

04-22-2014, 01:00 AM	#386 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	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? SS_Firehawk likes this. __________________ Enjoy it. Destroy it.

04-22-2014, 01:37 PM	#387 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

04-23-2014, 01:41 AM	#388 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	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. Masterbeatty likes this. __________________ Enjoy it. Destroy it. Last edited by Jordo!; 04-23-2014 at 04:48 PM.

04-23-2014, 09:26 AM	#389 (permalink)
Masterbeatty A True Z Fanatic Join Date: May 2012 Location: Whales Vagina Posts: 4,586 Drives: the speed limit... Rep Power: 122867	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. __________________ 2011 MB 6MT Masterbeatty journal

04-23-2014, 01:47 PM	#390 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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 ;-) Mr&Mrs, DEpointfive0 and Hotrodz like this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

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