Clunkung from right front Mustang II front end - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Handfull 54 · 08-31-2011, 10:26 PM

My truck has a clunking sound comming from the front end passenger side. I notice it when I release the brakes. It looks like the fender is dropping down at the time of the clunk. Any ideas on where to start? I have 325 miles on it. It has all new bushings,springs and shocks and uses Chevy rotors and brakes on the mustang spindle.

50adrod · 08-31-2011, 11:27 PM

if it has strut rods one may be loose, definitley check it out sounds unsafe

solidaxel · 09-01-2011, 01:33 AM

I would NOT drive it until you replaced or tightened the problem>
.

Place a jack under the shock and take the weight off the wheel and try and move things around, look at all the connections, including the upper shock bolt

dwcsr · 09-01-2011, 06:26 AM

Quote:

Originally Posted by Handfull 54

My truck has a clunking sound comming from the front end passenger side. I notice it when I release the brakes. It looks like the fender is dropping down at the time of the clunk. Any ideas on where to start? I have 325 miles on it. It has all new bushings,springs and shocks and uses Chevy rotors and brakes on the mustang spindle.

Take a look at the disc pads to make sure they are not slopping around in the caliper. The tabs on the outer pad need to be bend tightly against the calipers. You can do it with water pump (channel Lock) pliers

Handfull 54 · 09-01-2011, 04:37 PM

I found the problem. I jacked up the truck and began checking the bolts from top to bottom. I noticed the upper A frame "hat" was shiny from the upper A arm rubbing back and forth on it. I tightened the top bolts which were very loose and worked my way down. I used a torque wrench as some of those bolts need to be tightened to 120 ft. lbs. Anyway I did both sides and got everything tight. I just road tested it and the clunk is GONE. Thanks to all of you who responded, it was good information. And yes the strut rod bolts were loose also. Thanks again.

parkwood · 09-02-2011, 01:17 AM

Quote:

Originally Posted by Handfull 54

I found the problem. I jacked up the truck and began checking the bolts from top to bottom. I noticed the upper A frame "hat" was shiny from the upper A arm rubbing back and forth on it. I tightened the top bolts which were very loose and worked my way down. I used a torque wrench as some of those bolts need to be tightened to 120 ft. lbs. Anyway I did both sides and got everything tight. I just road tested it and the clunk is GONE. Thanks to all of you who responded, it was good information. And yes the strut rod bolts were loose also. Thanks again.

Hope you plan on getting the front end re-alined... your camber will be off if the top a-arms moved... just saying..

Handfull 54 · 09-02-2011, 09:33 AM

Thanks Parkwood. I plan on doing that next week. I found a guy who has an alignment shop and also has a shop at his house. He told me to come over to his house shop where he can spend more time and get everything alined and torqued.

55dude · 09-01-2011, 04:46 PM

i have seen this before and recomend a drop of loc-tite and retorque the bolts to specs.

gearheads78 · 09-01-2011, 05:53 PM

I like to use mechanical lock nuts instead of lock-tite. Lock-tite can melt with the heat the brakes generate.

08-31-2011, 10:26 PM	#1
Handfull 54 Registered User Join Date: Jul 2011 Location: Moorpark, California Posts: 159	Clunkung from right front Mustang II front end My truck has a clunking sound comming from the front end passenger side. I notice it when I release the brakes. It looks like the fender is dropping down at the time of the clunk. Any ideas on where to start? I have 325 miles on it. It has all new bushings,springs and shocks and uses Chevy rotors and brakes on the mustang spindle.

08-31-2011, 11:27 PM	#2
50adrod Registered User Join Date: Jun 2008 Location: Louisiana Posts: 493	Re: Clunkung from right front Mustang II front end if it has strut rods one may be loose, definitley check it out sounds unsafe __________________ 1971 Corvette convertible 454@ 525 hp 1936 Chevy Truck street rod 1952 Chevy truck hot rod build http://www.killbillet.com/showthread...2-Chevy-Cut-up 1964 F 100 custom street rod http://www.ford-trucks.com/forums/12...mark-viii.html 1950 custom Chevy Truck

09-01-2011, 01:33 AM	#3
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: Clunkung from right front Mustang II front end I would NOT drive it until you replaced or tightened the problem> . Place a jack under the shock and take the weight off the wheel and try and move things around, look at all the connections, including the upper shock bolt __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

09-01-2011, 04:37 PM	#5
Handfull 54 Registered User Join Date: Jul 2011 Location: Moorpark, California Posts: 159	Re: Clunkung from right front Mustang II front end I found the problem. I jacked up the truck and began checking the bolts from top to bottom. I noticed the upper A frame "hat" was shiny from the upper A arm rubbing back and forth on it. I tightened the top bolts which were very loose and worked my way down. I used a torque wrench as some of those bolts need to be tightened to 120 ft. lbs. Anyway I did both sides and got everything tight. I just road tested it and the clunk is GONE. Thanks to all of you who responded, it was good information. And yes the strut rod bolts were loose also. Thanks again.

09-02-2011, 09:33 AM	#7
Handfull 54 Registered User Join Date: Jul 2011 Location: Moorpark, California Posts: 159	Re: Clunkung from right front Mustang II front end Thanks Parkwood. I plan on doing that next week. I found a guy who has an alignment shop and also has a shop at his house. He told me to come over to his house shop where he can spend more time and get everything alined and torqued.

09-01-2011, 04:46 PM	#8
55dude Registered User Join Date: Jan 2007 Location: tacoma wa. Posts: 1,037	Re: Clunkung from right front Mustang II front end i have seen this before and recomend a drop of loc-tite and retorque the bolts to specs.

09-01-2011, 05:53 PM	#9
gearheads78 Registered User Join Date: Aug 2011 Location: Dallas TX Posts: 563	Re: Clunkung from right front Mustang II front end I like to use mechanical lock nuts instead of lock-tite. Lock-tite can melt with the heat the brakes generate.



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