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Old 08-04-2006, 05:52 PM   #1
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Loud Bang from rear 1-2 shift
My car has been out of commission for the last month or so. Just got it on the road last weekend, sure beats the 4 banger Sunfire beater I have been driving.. Anyway.

Tonight on my way home from work, there is a spot I have to do a U turn on a busy road. Got some room, and floored it. As the car shifter from fist to second, the car used to make the tires bark, well tonight instead I heard a loud metal to metal bang noise... My tranny does have a stage 2 shift kit.. So I'm wondering if I broke the rear gears, or something?

Anyone with any thoughts on the matter?? Thanks
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92 Camaro Z/28 Convertible
====================
Flowmaster Amnerican Thunder
Ported Plenum
KB Subframe Connectors
Moog Springs Front and Rear
KYB Shocks and Struts
Poly Bushings
-------------------------------
Mad Dog 700R4 Transmission
-------------------------------
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Corvette Servo
.500 Boost Valve
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-------------------------------
Brakes
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SSBC Quick Change Calipers a181
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Old 08-04-2006, 06:12 PM   #2
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Were you able to drive it home? Does is still shift up through the gears? What else can you tell us about how it behaved after the "thump"?
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Old 08-04-2006, 08:06 PM   #3
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Car: 92 Z/28 Convertible
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If I keep my foot out of it, IE drive it "normal" it is fine. If I floor it from a dead stop it makes that bang noise and "feels" like its slipping for just that moment, then it seems fine, until it shifts, then it does that again...

I just went out for dinner and a test drive. It seems that the noise and the "bump" I feel when this happens is only on the passenger rear. Could it be the axle slipping???
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Old 08-04-2006, 08:13 PM   #4
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Car: 89 Firebird
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Check the transmission mount first. They often break.
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Old 08-04-2006, 08:36 PM   #5
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It does look like it has seen better days. I will replace it tomorrow morning and report back..

Thanks
__________________
-----------------------------------
92 Camaro Z/28 Convertible
====================
Flowmaster Amnerican Thunder
Ported Plenum
KB Subframe Connectors
Moog Springs Front and Rear
KYB Shocks and Struts
Poly Bushings
-------------------------------
Mad Dog 700R4 Transmission
-------------------------------
Stage 2 Shift Kit
Corvette Servo
.500 Boost Valve
Downshift Kit
-------------------------------
Brakes
-------------------------------
Wilwood Prop valve
SSBC Quick Change Calipers a181
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Old 08-06-2006, 11:18 AM   #6
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Location: Palmetto, FL
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Car: 92 Z/28 Convertible
Engine: LB9
Transmission: Mad Dog Auto 700R4

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Yep, Busted Tranny mount. New one is in and all is well.. Thanks!!!

__________________
-----------------------------------
92 Camaro Z/28 Convertible
====================
Flowmaster Amnerican Thunder
Ported Plenum
KB Subframe Connectors
Moog Springs Front and Rear
KYB Shocks and Struts
Poly Bushings
-------------------------------
Mad Dog 700R4 Transmission
-------------------------------
Stage 2 Shift Kit
Corvette Servo
.500 Boost Valve
Downshift Kit
-------------------------------
Brakes
-------------------------------
Wilwood Prop valve
SSBC Quick Change Calipers a181
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Old 08-06-2006, 01:29 PM   #7
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http://i38.photobucket.com/albums/e1...n/PICT4461.jpg

It happens
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Old 08-06-2006, 03:54 PM   #8
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Yep. That's exactly what it looked like..
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Old 08-06-2006, 04:52 PM   #9
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Did you replace it with rubber or polyurathane?
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Old 08-06-2006, 06:09 PM   #10
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Replaced with just rubber..
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Old 09-02-2006, 05:30 AM   #11
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i put a new rubber mount just about every year. it's a PITA! my car is on it's third transmision. oh well... forgot how many mounts i killed.
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Old 09-04-2006, 11:17 AM   #12
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Quote:
Originally Posted by 1991Camaroz28 View Post
i put a new rubber mount just about every year. it's a PITA! my car is on it's third transmision. oh well... forgot how many mounts i killed.
Tsk, tsk, tsk! You coulda bought a poly mount by now with all the money you've spent on the worthless rubber ones! I managed to break the rubber ones with my anemic 305 TBI. Put a poly one in and haven't had a single problem since. Definitely a good upgrade!
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Old 09-04-2006, 11:55 AM   #13
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After replacing my rubber one with a poly one, and not liking the vibration, I went back to a rubber one. I broke it within 500 miles (WOT tuning)
I replaced it with a tougher LS1-style mount. Let's see how long this one
lasts.
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Old 09-05-2006, 07:21 AM   #14
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your right i coulda woulda and shoulda got a poly mount. oh well, thinking about things in retrospect for a moment... shoulda put in a 6 speed instead of a 700-r4
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Old 09-05-2006, 07:21 AM
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