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Username Post: I need some front end HELP!        (Topic#276006)
karrz 
Forum Newbie
Posts: 75

Reg: 12-21-10
02-06-12 06:16 AM - Post#2187723    

I have owned my 62 Corvette 327/340 for over 32 years. I was told my kingpins were worn and needed to be replaced. While i was away on business my father had a friend of his replace the kingpins.I wasn't happy about it. Now when i drive the car the front shimmys like crazy when I hit 30MPH.The steering wheel wobbles about 10 degrees . I took it to a frontend guy and he said the front end was okay.Could the steering box need to be rebuilt/adjusted? Or how can I check the frontend myself to see if the friend messed up Thanks



 




427SS65 
"13th Year" Platinum Supporting Member & Moderator
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427SS65
Age: 71
Loc: St. Louis, MO
Reg: 12-11-03
02-06-12 07:57 AM - Post#2187761    
    In response to karrz

I imagine the pins are not fitted correctly into the bushings. Probably a sloppy fit!

Tom 65-70 Full Size Team Moderator

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wagonmaster 
Senior Member
Posts: 8789
wagonmaster
Age: 68
Loc: Loganville, Ga.
Reg: 04-28-00
02-06-12 11:36 AM - Post#2187822    
    In response to 427SS65

Did you get it re-aligned after the king pin job?? Might check that...

Hey T @!


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karrz 
Forum Newbie
Posts: 75

Reg: 12-21-10
02-06-12 05:25 PM - Post#2187955    
    In response to 427SS65

Thanks, how can i check the fit? The guy that aligned the front end said everything was good. But not sure what he checked



 
karrz 
Forum Newbie
Posts: 75

Reg: 12-21-10
02-06-12 05:27 PM - Post#2187957    
    In response to wagonmaster

Yup I had it aligned and the service guy said all was well. Thats what puzzles me



 
427SS65 
"13th Year" Platinum Supporting Member & Moderator
Posts: 14453
427SS65
Age: 71
Loc: St. Louis, MO
Reg: 12-11-03
02-06-12 06:25 PM - Post#2187987    
    In response to karrz

That's a classic sign that the king pins are worn out - when the wheels flip flop (shimmy). New king pin and their associated bearings (bronze or ball) are machined as a set.

The bronze ones are reamed with a pin reamer to match the O.D. of the pin (plus an excess amount to allow the pin to turn without binding).

Something is wrong with the work done to the car. Take it to someone who specializes in king pins to get a second opinion.

Tom 65-70 Full Size Team Moderator

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wagonmaster 
Senior Member
Posts: 8789
wagonmaster
Age: 68
Loc: Loganville, Ga.
Reg: 04-28-00
02-06-12 08:12 PM - Post#2188021    
    In response to 427SS65

The only thing I can figure (sight unseen) is that the axle may be worn and the kingpin holes could be worn beyond tolerance or "eggshaped". You can bush the axle to correct this, if that is indeed the case.....Sold a '58 pickup that was wrecked to a guy that had a '57 with a bad axle (my front axle had new pins and bushings, brakes, etc.....) That fixed his problem!

Hey T @!


In Memory of Mike McVeigh- The "Mad Spring Wacker" He roams the Forums of CT forever in our hearts and minds!

http://www.picturetrail.com/wagonmaster55

Joe


 
427SS65 
"13th Year" Platinum Supporting Member & Moderator
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427SS65
Age: 71
Loc: St. Louis, MO
Reg: 12-11-03
02-07-12 06:05 AM - Post#2188104    
    In response to wagonmaster

I thought it was standard procedure to rebush on all kingpin replacements? How could the bushing not be worn if the pin is worn? I think the pin is hardened steel and the bushing is only a lubricated bronze material. I watched a professional do my Dad's 58 Chevy Apache that had kingpins. He worked real hard - and so was the steering!

Tom 65-70 Full Size Team Moderator

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65 Impala SS Tahitian Turquoise


 
wagonmaster 
Senior Member
Posts: 8789
wagonmaster
Age: 68
Loc: Loganville, Ga.
Reg: 04-28-00
02-08-12 01:18 PM - Post#2188567    
    In response to 427SS65

Tom,
I'm not speaking of the bushing, but the axle itself.....If the axle is worn beyond specs, the bushings won't help all that much....The hole will need to be machined and fitted with a sleeve so that the king pin and bushings can provide the fit that is necessary.

Hey T @!


In Memory of Mike McVeigh- The "Mad Spring Wacker" He roams the Forums of CT forever in our hearts and minds!

http://www.picturetrail.com/wagonmaster55

Joe


 
427SS65 
"13th Year" Platinum Supporting Member & Moderator
Posts: 14453
427SS65
Age: 71
Loc: St. Louis, MO
Reg: 12-11-03
02-15-12 09:46 AM - Post#2190908    
    In response to wagonmaster

OK, Joe! I guess we were thinking of the same part. I've never seen an axle worn. Usually the bushing (or the Moog replacement bearing) is all it takes.

How could the axle get that worn?

Tom 65-70 Full Size Team Moderator

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65 Impala SS Tahitian Turquoise


 
WagonMan 
"7th Year" Silver Supporting Member
Posts: 1613
WagonMan
Age: 69
Loc: Las Vegas, NV
Reg: 10-26-04
02-15-12 11:53 AM - Post#2190948    
    In response to karrz

Have you ruled out that the tires are out of balance also as well as the rest of the steering linkage?



Charles

57 210 4dr. Wagon(bought '82)
-350/700r4 Mild Custom
56 BA 4dr. ht.(bought '98)
-265/TH350 Mostly Stock
29 Ford Sedan(bought '75)
-4.3L/TH350(in progress)


 
wagonmaster 
Senior Member
Posts: 8789
wagonmaster
Age: 68
Loc: Loganville, Ga.
Reg: 04-28-00
02-15-12 03:02 PM - Post#2191010    
    In response to 427SS65

  • Quote:
How could the axle get that worn?



I sold the front axle off of my wrecked 1958 Chevy p/u to a guy that had a '57 with terribly worn king pin holes. Lack of lubrication advances the wear of those components dramatically!! The trucks are usually much worse than the Corvettes, because we take/took a little better care than some truck owners did, especially back in the day.

Hey T @!


In Memory of Mike McVeigh- The "Mad Spring Wacker" He roams the Forums of CT forever in our hearts and minds!

http://www.picturetrail.com/wagonmaster55

Joe


 
TAT_2 
"16th Year" Silver Supporting Member, and Official CT Grim Reaper
Posts: 34851
TAT_2
Loc: "UNDER THE BOARDWALK"
Reg: 10-29-00
02-21-12 03:32 PM - Post#2193501    
    In response to wagonmaster

GOOD READ ,WITH PICS,FROM 1 OF OUR OWN

http://www.chevytalk.org/fusionbb/showtopic.php?ti...

IM MORE AKIN TO BUS & TRUCK KING PINS,BEEN OUT FOR AWHILE BUT WE DONT EVEN REBUSH,WE USE A SPIRAL WOUND SPRING INSTALLED WITH T HANDLE,THEN BREAK OFF THE TAB.

09 PONTIAC- VIBE
08 PONTIAC- G6
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93 VETTE - 40TH ANIV RUBY RED LT1/6SPD/RAG TOP
NEXT ?


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Hugomiller 
Forum Newbie
Posts: 45

Age: 67
Loc: Florida and UK
Reg: 05-02-17
12-02-17 02:38 AM - Post#2716620    
    In response to karrz

Don't rule out bizarre co-incidences. The first thing I would try is to swap the wheels front to back. It might be possible that the guy who did the work road-tested it & hit a kerb. Or maybe one of the tires chose that precise moment to develop a bulge or other irregularity that would throw it out of balance.
Then just check everything for play - king pins; steering joints; shock absorbers & bushings - everything.
There are only so many things it can be, so shouldn't be hard to find with a methodical approach and an open mind. Don't just assume it must be because of the king pin work that's been done - strange things do happen!



 




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