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04-22-2013, 10:29 AM
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#101
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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I set the pinion angle at the rear to -1. but I didn't account for the trans. I think thats the culprit. Hopefully this friday I will get a chance to take it to my uncle's garage in Lebanon and set it on the alignment rack to check everything
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1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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04-22-2013, 07:45 PM
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#102
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Join Date: May 2009
Location: Williamstown
Posts: 91
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Let is know how u make out
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04-22-2013, 09:25 PM
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#103
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Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,634
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Did you set the pinion angle *in relation to the engine angle*?
When they say -1*, they don't mean -1* in relation to the ground. It's -1* in relation to the engine angle.
Say, if your engine is tilted back 4*, and you set your pinion angle at the same 4* back, you are at 0. If you set your pinion at 3* back, you are at -1*.
__________________
1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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04-22-2013, 10:21 PM
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#104
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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Quote:
Originally Posted by The_Bishop
Did you set the pinion angle *in relation to the engine angle*?
When they say -1*, they don't mean -1* in relation to the ground. It's -1* in relation to the engine angle.
Say, if your engine is tilted back 4*, and you set your pinion angle at the same 4* back, you are at 0. If you set your pinion at 3* back, you are at -1*.
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That is exactly what I DIDNT do in the first place. I just set the rear to -1* and I thought I was golden. Like an idiot, I didn't do digging. 3-4 years later, I now know what to do. Hopefully Friday I will be able to measure the engine angle and the rear, and do exactly like you said.
I'm so mad at myself right now. I am pretty convinced it is the driveline angle. Especially after reading through LS1 tech horror stories with vibrations and driveline angles fixing vibration issues.
Im so anxious for friday. I WANT THIS FIXED.
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
Last edited by ThoR294; 04-22-2013 at 10:34 PM.
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04-22-2013, 11:43 PM
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#105
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Join Date: Nov 2012
Location: Millstone, NJ
Posts: 641
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I just used a pinion angle measurer thing (can be found in tool section of homedepot) and put it on my driveshaft. Only use that because u want alittle deflection in the drive shaft for the u joints.
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94 TA GT. Stock 350, cam, exhaust
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04-23-2013, 03:45 AM
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#106
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Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,634
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Thor, the reason I know about it is I was chasing down a drive line vibration, too.
__________________
1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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04-26-2013, 03:48 PM
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#107
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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Measured it as best as I could. Trans was pointing down 3* and rear was down 1*. so I shimmed the trans mount so it was pointing down 1* and rear pointing up 1* (as what my UMI angle finder said...)
It's still there, but its not as bad. I wonder if the angle finder just sucks and it's not getting an accurate reading... or my driveshaft may be too short since the car is lowered?
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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04-26-2013, 05:21 PM
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#108
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Join Date: Sep 2008
Location: Howell,NJ
Posts: 536
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I feel your frustration and anger. I had a vibration problem a couple years back and kept a diary of things that I checked and replaced. Similar to what you are going through. It ended up being the exhaust system. The combination of the rubber hangers hardening and the alignment was off from lowering the car. The noise would change when I shifted from drive to reverse. The way I discovered it was tapping the pipes with a rubber mallet from front to back with the suspension loaded and heard this loud vibration towards the rear.
I replaced all the rubber hangars and realigned everything and the vibration was gone.
__________________
94 CAMARO
TURBO 3.5 LITER
12.573 @ 107.29 1/4 MILE
8.021 @ 86.38 1/8 MILE
BEST 60' 1.781
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04-26-2013, 06:37 PM
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#109
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Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,634
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Wait, if you have an adjustable torque arm, you adjust *that* and forego the shims on the stock trans mount.
__________________
1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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04-26-2013, 08:00 PM
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#110
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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Quote:
Originally Posted by The_Bishop
Wait, if you have an adjustable torque arm, you adjust *that* and forego the shims on the stock trans mount.
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From what I read, everyone's transmission was pointing up... and mine was pointing down. So I didn't know if its because of the UMI relocation crossmember was making it point down. I can always remove the shims and go again.
I just fine tuned it by just winging the Torque Arm adjustment. It is not noticeable at ALL in gear/under throttle. but if you push the clutch in you can feel it. No where near as bad as before, though.
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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04-26-2013, 08:16 PM
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#111
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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http://www.stevesnovasite.com/forums...d.php?t=211270
Read up. The two guys in here are very tuned in to this type of thing. One's a senior guy at Chris Alston's.
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04-28-2013, 10:18 PM
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#112
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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I have the relocation crossmember for the Torque Arm... I wonder if the bushing placement for the T/A has anything to do with a vibration
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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04-29-2013, 03:38 PM
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#113
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Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,634
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The transmission *should* point down. The engine/trans angles towards the rear.
__________________
1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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05-02-2013, 07:46 AM
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#114
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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I guess now that I think about it, that does make sense... The rear is lower so it should be down. duhh.
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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05-02-2013, 08:42 AM
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#115
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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The rear will rotate under acceleration thus aligning the driveline angles to 0* or so I have read on le internets.
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05-02-2013, 09:08 AM
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#116
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by sweetbmxrider
The rear will rotate under acceleration thus aligning the driveline angles to 0* or so I have read on le internets.
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This is why traction bars exist
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05-02-2013, 04:18 PM
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#117
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Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,634
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Rotation is *much* lower on our torque arm cars. At stock(ish) power levels and with an aftermarket arm, I'd be surprised if it was more than .5*, and I'd be willing to bet it's closer to 0*.
__________________
1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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05-03-2013, 11:24 AM
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#118
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Join Date: May 2010
Location: Brick, NJ
Posts: 1,868
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I had a vibration too. turned out to be a combo of bad bushings in both the stock LCA's and the stock Panhard rod. just saying what my issue was. yours could be totally unrelated
__________________
Formerly known as blk95formula
86t/a_ram_air on TGO
2018 Silverado 1500
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05-05-2013, 10:56 PM
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#119
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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I think it had it when i swapped the panhard out as well. I am going to put in poly/rod LCAs at some point. I was silly and bought them a long time ago
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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06-07-2013, 07:25 PM
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#120
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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Finally figured it out. I bought this angle finder:
http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
I re-installed my poly transmission mount. Transmission was pointing down 3 degrees. I set the rear to point UP 2.65-2.75 degrees. Vibration is now GONE. I have a slight vibration at 90mph.... but that is probably from everything being solid, and it is NO WHERE NEAR as bad as it used to be. THANK GOD I can't believe it took me this long to do this research and figure out how to properly set the angle. I was just setting the rear before *sigh*
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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06-07-2013, 07:40 PM
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#121
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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This is how you learn.
Last edited by sweetbmxrider; 06-07-2013 at 07:40 PM.
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06-08-2013, 11:26 AM
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#122
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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Quote:
Originally Posted by sweetbmxrider
This is how you learn.
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Indeed. Lesson learnt :P
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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05-16-2014, 04:24 PM
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#123
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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so Im bringing this back up. It is still there, and I have moved the angle everywhere I am pretty sure. Still stumped on how to squash this. I am wondering if its the relocation X member that is giving me the wicked vibe
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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05-26-2014, 08:13 PM
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#124
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,132
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I didn't read the whole thread but I see you have an adjustable phb listed in your sig. Have you ever had it on an alignment rack to check if your rear axle is centered?
__________________
01 SS 383 stroker, Magnum F, 9in.
86 Trans-Am 355 t56
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05-27-2014, 11:21 AM
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#125
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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I did the whole pendulum thing to center the rear when I first installed that bar.
On LS1TECH, I was told to try and measure the transmission angle from the shifter plate. i may be getting a bad reading from the transmission under the output shaft. Also, was told to have -2 total angle... so if the trans is -3 the rear should be -1 and that should work for me. so I am going to try to pull the console out on my uncles alignment rack and do it AGAIN... and pray to the vibration gods
__________________
1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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