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Post Info TOPIC: Tire mounting help needed---427Carl,are you here?


A Poncho Legend!

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Tire mounting help needed---427Carl,are you here?


I'm putting new rubber on the 16" Firebird rims. All goes well but the last 3-4"  of the bead won't pop on. It is holding air and everything but I have 45 pounds in there and the first two won't pop for nothing.

Ideas???  confuse



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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



Canadian Poncho Superstar!

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lubed? or dry fit?



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sTevE

55 GMC, 70 Pontiac 2+2 rag



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You've got it well lubed?

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A Poncho Legend!

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Lubed with tire mounting slip soap. Went on nice and all, rest of the bead popped nice, both back beads went on nice but both front ones leave a couple of inches about 1/4" from the edge not pushed tight.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



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Always in the same spot on the rim? You've checked for small scuffs and rotated the tire on the rim to make sure it isn't a tire issue?

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yes, must be rim

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A Poncho Legend!

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I haven't tried removing it and starting over, just broke the bead and retried. It seems it will happen anywhere on the rim, depending on where I pull up to make it seal.

Just trying my third one, we'll see how that goes in a minute.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



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47 pounds in number 3 tire, same thing.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



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I'm not familiar with new mounting. Can you flip the whole thing upside down and use the air blast on the side you are having problems with so that it pops first? .......or...more lube? You lube both the tire and the rim, right?

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A Poncho Legend!

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Yes, all lubed up very well.

The rims are the original rims, they are not new and the old ones were fine.

I am thinking I might put all four on the car and drive the car a bit, very slowly to see if they'll pop. I'm not sure whether to have 45 pounds or 20 pounds to do that. Low pressure would flex the sidewall a lot more than high pressure.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



A Poncho Legend!

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And when I mount them, it takes no effort at all to get them on the bead. They almost seal up right off the hop.



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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



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Good luck.......hope you get it figured out. I've never tired that idea. I think I have inflated to more psi, but it was many years ago and can't recall for sure. Don't do anything unsafe.

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Poncho Master!

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Hit it with a hammer on either side of the part that wont seat.

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Stony Mountain, MB

65 Impala SS 2dr HT
65 Impala convert.
59 Impala 2dr HT
67 Acadian Canso 2dr HT

 

 

 



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DANO65 wrote:

Hit it with a hammer on either side of the part that wont seat.


 Right.......we used to have a rubber mallet for doing that. I forgot about that.

 



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Poncho Master!

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tire not rim


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Stony Mountain, MB

65 Impala SS 2dr HT
65 Impala convert.
59 Impala 2dr HT
67 Acadian Canso 2dr HT

 

 

 



Canadian Poncho Superstar!

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vaguely i recall that we used to fill without the Schrader valve in, till the tire seated then let the air run out as we threader the valve in. 100 lbs is what it took sometimes, remember safety goggles and gloves



-- Edited by Stephenzone on Monday 28th of March 2011 09:22:19 PM

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sTevE

55 GMC, 70 Pontiac 2+2 rag



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Carl, are you doing this in a non heated garage?



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A Poncho Legend!

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Nope, nice warm dealership service bay, tires are nice and warm.

Drove around on them inflated a 50 psi, no go, drove a bit, gently, at 15 psi, no go.

Came in, took one off, popped the front bead, soaped the crap out of it and at 50 pounds, POW, so got one done. Hope the next 3 work like that.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



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GOT 'EM!

Next three took almost 55 pounds and one played the waiting game with me! Almost 10 minutes later while I was balancing the others, bang, we're off to the races.

Thanks for the help guys.

 



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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



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Do what you did  wink       next time  air up with valve cores out



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Poncho Master!

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it's a bugger trying to get those D78-14 from the 65 on their eh... LOL



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pontiax- (canadian pontiac X frame)1964 Parisienne 2dr. Hardtop ,lagoon aqua metallic (Q) ,421 cid Dart Industries block and heads. 550 hp. 575 ft lb  of torque.

 



Poncho Master!

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Go on u-tube and see how they mount tires with starting fluid...

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1966 Acadian Canso Sport Deluxe

1968 Beaumont 2dr post project



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crazyj wrote:

Go on u-tube and see how they mount tires with starting fluid...


 

Use to do that all the time when we were changing semi tires. Works great.



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67 Beaumonts Rule!!



A Poncho Legend!

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I wasn't having any trouble getting air into the tire. The bead sealed right away, that was the funny part. It was sealed at 5 pounds but the last few inches one random spot around the rim wouldn't pop the final ka-bang for nuttin'...

One I got them installed, I took them out and "tested" them... laughing.gif

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



Guru

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Starter fluid? Good way to get killed if not done right

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