what's acceptable for wrist pin clearance on a floating
#1104321
10/30/11 09:18 PM
10/30/11 09:18 PM
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Joined: Jan 2009
Posts: 813
Ontario,Canada
brads70
OP
super stock
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OP
super stock
Joined: Jan 2009
Posts: 813
Ontario,Canada
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Re: what's acceptable for wrist pin clearance on a floating
[Re: brads70]
#1104322
10/30/11 09:21 PM
10/30/11 09:21 PM
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Joined: Jan 2003
Posts: 3,623
Millinocket, Maine
JonC
master
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master
Joined: Jan 2003
Posts: 3,623
Millinocket, Maine
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I'm no expert for sure, but I don't see a really good place to grind for balance on those rods. That's probably the best spot. But I think I would take a little off both sides and not a lot on one side.
Last edited by JonC; 10/30/11 09:23 PM.
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Re: what's acceptable for wrist pin clearance on a floating
[Re: brads70]
#1104323
10/30/11 09:25 PM
10/30/11 09:25 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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No good. Call em up & request a return authorization.
live every 24 hour block of time like it's your last day on earth
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Re: what's acceptable for wrist pin clearance on a floating
[Re: brads70]
#1104325
10/31/11 02:37 AM
10/31/11 02:37 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Brad who was the source of those rods? I'm in the market for some 7.1's and dont wanna to get burnt
live every 24 hour block of time like it's your last day on earth
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Re: what's acceptable for wrist pin clearance on a floating
[Re: RapidRobert]
#1104328
10/31/11 08:16 AM
10/31/11 08:16 AM
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Joined: Jan 2009
Posts: 813
Ontario,Canada
brads70
OP
super stock
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OP
super stock
Joined: Jan 2009
Posts: 813
Ontario,Canada
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Quote:
Brad who was the source of those rods? I'm in the market for some 7.1's and dont wanna to get burnt
I don't want to " throw them under the bus" as they said they will replace them. I figure everyone screws up now and then. The difference is admiting it and making it right. That seperates the men from the boys! 
Off to the post office today....
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Re: what's acceptable for wrist pin clearance on a floating
[Re: brads70]
#1104329
10/31/11 10:16 AM
10/31/11 10:16 AM
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Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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I don't want to " throw them under the bus" as they said they will replace them. I figure everyone screws up now and then. The difference is admiting it and making it right. That seperates the men from the boys! Off to the post office today....
There is a big difference in " screwing up every now and then" and just plain horrible workmanship. They performed the latter on that job. Not only that, but if they had a clue, they would NEVER balance a rod like that, putting hundreds of stress risers right down the side of a bolt hole on a connecting rod. Thats work of a 10 year old. They simply didnt care, hoped you wouldnt notice ( or knpow the difference) or just hired a 10 year old in their shop. Ok, so they dont know how to balance, THEN they decide to send rod pins out with almost DOUBLE the accepted and needed clearance? Why you would protect them I dont know, but thats your call. I'd get my money back and deal with someone who actually knows what they are doing, unless of course, " best price" was what this purchase was about.
Good luck on the next set. 
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: what's acceptable for wrist pin clearance on a floating
[Re: brads70]
#1104331
11/28/11 11:00 PM
11/28/11 11:00 PM
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Joined: Jan 2003
Posts: 3,504
DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,504
DFW
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I wouldn't grind on the sides of the caps like that to balance them. My machinist is balancing a set of Manley I-beam rods for me and I ran a simplified Hemi rod under tension. I found the cap area at the parting line and 90 degrees to that on the center of the cap to have high stress areas. I found similar results in a technical paper online on rod stresses.
Floyd Lippencott IV
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Re: what's acceptable for wrist pin clearance on a floating
[Re: Cab_Burge]
#1104333
11/29/11 01:22 AM
11/29/11 01:22 AM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
I would much rather see .0008 to .0012 than .0005  I have seen wrist pins galled up due to to little clearances ,never saw a wrist pin galled up due to excessive clearances, bent yes, but not galled up .....
There was a post(with pics  ) here 4 or 5 months ago with the bushing BEAT OUT of the small end ....probably due to Xcess clearance.
I have put together a couple of floaters ... NOTHING looser than .0009.
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Re: what's acceptable for wrist pin clearance on a floating
[Re: brads70]
#1104337
11/29/11 06:24 PM
11/29/11 06:24 PM
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Joined: May 2007
Posts: 701
Northern California
lilcuda
super stock
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super stock
Joined: May 2007
Posts: 701
Northern California
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Quote:
Well I got my new replacement rods. Muscle Motors came through in the end! I'll fit the pins myself as they don't quite fit the new rods. I weighted them and they are all within 1.5 grams , so I have no idea why the ground the sides like that? 
I wouldn't let MM work on my lawnmower engine. Long story...
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Re: what's acceptable for wrist pin clearance on a floating
[Re: lahatte]
#1104338
11/29/11 06:28 PM
11/29/11 06:28 PM
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Joined: May 2007
Posts: 701
Northern California
lilcuda
super stock
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super stock
Joined: May 2007
Posts: 701
Northern California
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Quote:
Rick, is that thumb push with oil or without?
And who's thumb are we talking about? That kind of "spec" is great for a backyard guy with stock parts, but in a performance application you have to measure the clearance with the proper equipment.
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Re: what's acceptable for wrist pin clearance on a floating
[Re: lilcuda]
#1104339
11/29/11 09:33 PM
11/29/11 09:33 PM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
Quote:
Rick, is that thumb push with oil or without?
And who's thumb are we talking about? That kind of "spec" is great for a backyard guy with stock parts, but in a performance application you have to measure the clearance with the proper equipment.
So right ...
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I gotta eat the postage , but better that than a new set of rods.
I would much rather see .0008 to .0012 than .0005 
When it comes to clearances in a Hi Po motor a little bit looser is usually way better than a tiny bit to tight 
