welding balance weights

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welding balance weights

Post  rmk57 on September 18th 2014, 9:15 am

I've never seen a crank balanced like this before and would some expert opinions on using this up to 6500 rpm.
It's a 4.15 cast Scat crank.

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Re: welding balance weights

Post  DanH on September 18th 2014, 9:27 am

rmk57 wrote:I've never seen a crank balanced like this before and would some expert opinions on using this up to 6500 rpm.
It's a 4.15 cast Scat crank.

who to know without a picture, so I can say I never seen it done

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Re: welding balance weights

Post  rmk57 on September 18th 2014, 9:32 am


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Re: welding balance weights

Post  dfree383 on September 18th 2014, 9:42 am

You need to get a photo host like photobucket and link it.
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Re: welding balance weights

Post  rmk57 on September 18th 2014, 1:57 pm



Think I've got it!

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Re: welding balance weights

Post  dfree383 on September 18th 2014, 2:40 pm

That's very poor quality of a job you got right there.
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Re: welding balance weights

Post  FalconEh on September 18th 2014, 3:15 pm

So what happened to inserting a Mallory/tungsten slug... Must have been Friday afternoon Miller time Suspect
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Re: welding balance weights

Post  kim on September 18th 2014, 3:38 pm

That shop do a bunch of chevy engines????

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Re: welding balance weights

Post  Dark Horse of Apocalypse on September 18th 2014, 6:32 pm

FalconEh wrote:So what happened to inserting a Mallory/tungsten slug... Must have been Friday afternoon Miller time Suspect

kim wrote:That shop do a bunch of chevy engines????

Wow that even looks wrong to the eyes of a novice Exclamation Exclamation
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Re: welding balance weights

Post  Curt on September 18th 2014, 6:37 pm

You should have added "Please use Mallory if it is light on the throws" instead of "I'm on a budget and I need it done cheap".
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Re: welding balance weights

Post  kim on September 18th 2014, 6:50 pm

Looks like a decent weld.  So aside from the fact that its a little back yard.   Through 6500 shouldn't be an issue.  Once the pans on no-one knows if you have Mona Lisa or velvet elvis under the cover.

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Re: welding balance weights

Post  Rmk Boss9 on September 18th 2014, 7:06 pm

kim wrote:Looks like a decent weld.  So aside from the fact that its a little back yard.   Through 6500 shouldn't be an issue.  Once the pans on no-one knows if you have Mona Lisa or velvet elvis under the cover.

The weld on the other side is a better looking, flatter with more penetration from what I can see.
I'm going to go ahead an run it.
The balance was a flat rate cost, plus the price of the Mallory. I would have gladly paid an extra $100 and have it done right instead of this f#uck up.

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Re: welding balance weights

Post  bosshoss on September 18th 2014, 7:53 pm

I wouldn't run that if my life depended on it...

Bad experience from many years ago with a cast Cleveland crank...

when the weld breaks and the mallory comes off bad shit starts happening in a big hurry...

Hope you have a diaper on this car.

Shocked

dkp
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Re: welding balance weights

Post  bbfstanger on September 18th 2014, 9:45 pm

that is hidious dont run it!

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Re: welding balance weights

Post  FalconEh on September 18th 2014, 9:56 pm

bosshoss wrote:I wouldn't run that if my life depended on it...

Bad experience from many years ago with a cast Cleveland crank...

when the weld breaks and the mallory comes off bad shit starts happening in a big hurry...

Hope you have a diaper on this car.

Shocked

dkp

I believe they should only diaper the Chevy's (see general post) but X2 Without a diaper on this balance that projectile flying through the oil pan and the fender at my family is not cool...add in the cast welding is an art all things considered, a song comes to mind...I Want My Money Back! JMO
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Re: welding balance weights

Post  rmk57 on September 18th 2014, 10:11 pm

I'm going to contact the shop and see what they can do for me. If they say nothing, then I'll do some name dropping.

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Re: welding balance weights

Post  FalconEh on September 18th 2014, 10:13 pm

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Re: welding balance weights

Post  rmcomprandy on September 18th 2014, 11:47 pm

Rmk Boss9 wrote:
kim wrote:Looks like a decent weld.  So aside from the fact that its a little back yard.   Through 6500 shouldn't be an issue.  Once the pans on no-one knows if you have Mona Lisa or velvet elvis under the cover.

The weld on the other side is a better looking, flatter with more penetration from what I can see.
I'm going to go ahead an run it.
The balance was a flat rate cost, plus the price of the Mallory. I would have gladly paid an extra $100 and have it done right instead of this f#uck up.

"RIGHT" is a matter of opinion.  There is nothing mechanically wrong with how that is done except that  it doesn't look pretty.
Just as I replied to you on the other site.

EDIT:  Next time be sure to mention that you need it to look pretty, also. Then it can all get filled-in with weld and it can be ground pretty ... at the further expense of "time and material".


Last edited by rmcomprandy on September 18th 2014, 11:55 pm; edited 3 times in total

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Re: welding balance weights

Post  FalconEh on September 18th 2014, 11:50 pm

rmcomprandy wrote:
Rmk Boss9 wrote:
kim wrote:Looks like a decent weld.  So aside from the fact that its a little back yard.   Through 6500 shouldn't be an issue.  Once the pans on no-one knows if you have Mona Lisa or velvet elvis under the cover.

The weld on the other side is a better looking, flatter with more penetration from what I can see.
I'm going to go ahead an run it.
The balance was a flat rate cost, plus the price of the Mallory. I would have gladly paid an extra $100 and have it done right instead of this f#uck up.

"RIGHT" is a matter of opinion.  There is nothing mechanically wrong with how that is done except that  it doesn't look pretty.

With this response I retact my previous comment, as he Definately knows more about the functionality of that picture than I Do Embarassed
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Re: welding balance weights

Post  FalconEh on September 19th 2014, 12:00 am

Get what you ask for...and pay for.
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Re: welding balance weights

Post  Rmk Boss9 on September 19th 2014, 12:14 am

rmcomprandy wrote:
Rmk Boss9 wrote:
kim wrote:Looks like a decent weld.  So aside from the fact that its a little back yard.   Through 6500 shouldn't be an issue.  Once the pans on no-one knows if you have Mona Lisa or velvet elvis under the cover.

The weld on the other side is a better looking, flatter with more penetration from what I can see.
I'm going to go ahead an run it.
The balance was a flat rate cost, plus the price of the Mallory. I would have gladly paid an extra $100 and have it done right instead of this f#uck up.

"RIGHT" is a matter of opinion.  There is nothing mechanically wrong with how that is done except that  it doesn't look pretty.
Just as I replied to you on the other site.

EDIT:  Next time be sure to mention that you need it to look pretty, also. Then it can all get filled-in with weld and it can be ground pretty ... at the further expense of "time and material".


It's definitely a time saver! Maybe they should all be does this way. I wanted it done like the other 99% of the shops do, that's all.



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Re: welding balance weights

Post  kjett on September 19th 2014, 7:21 am

rmcomprandy wrote:
Rmk Boss9 wrote:
kim wrote:Looks like a decent weld.  So aside from the fact that its a little back yard.   Through 6500 shouldn't be an issue.  Once the pans on no-one knows if you have Mona Lisa or velvet elvis under the cover.

The weld on the other side is a better looking, flatter with more penetration from what I can see.
I'm going to go ahead an run it.
The balance was a flat rate cost, plus the price of the Mallory. I would have gladly paid an extra $100 and have it done right instead of this f#uck up.

"RIGHT" is a matter of opinion.  There is nothing mechanically wrong with how that is done except that  it doesn't look pretty.
Just as I replied to you on the other site.

EDIT:  Next time be sure to mention that you need it to look pretty, also. Then it can all get filled-in with weld and it can be ground pretty ... at the further expense of "time and material".

x2 on what Randy said. I'm no pro, but I do spend massive amounts of time in my engine builders shop and do some of the balance jobs that come through (got to pay my machine shop bills homehow!). Sometimes the crank needs weight added where there really isnt an area to add weight. There are tricks where you remove or add in other areas to try to get the balance to move to add/remove weight back where there is material. Looking that this is on the very edge of a throw, this may have been the case. Since this was a "flat rate" job, if this was a small shop, time is money so they did the job to make it mechanically correct and not have an excessive amount of time wasted to make it "pretty".
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Re: welding balance weights

Post  bbf-falcon on September 19th 2014, 8:32 am

I also agree with Randy,ive seen some cranks and other parts back in the day that would scare you to death,but they did the job.

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Re: welding balance weights

Post  rmcomprandy on September 19th 2014, 10:06 am

bbf-falcon wrote:I also agree with Randy,ive seen some cranks and other parts back in the day that would scare you to death,but they did the job.

Years ago, we would get a piece of mallory and drill a 7/16 hole through the middle. Then drill and tap the side of the crankshaft counterweight and bolt the weight in place.
Realistically, that was more unsightly but, those all worked just fine. It takes a bunch of deteriorating circumstances to break an alloy rod bolt and the weight attached to those is a whole lot more.

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Re: welding balance weights

Post  Paul Kane on September 19th 2014, 11:28 am

rmk57 wrote:I've never seen a crank balanced like this before and would some expert opinions on using this up to 6500 rpm.  It's a 4.15 cast Scat crank.
If it's correctly balanced and that's where the weight was needed then it's perfectly fine for your appplication and a complete non-issue.


Which parts (piston/rod) were used for the rest of the rotating assembly, and exactly how old is the crankshaft?
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