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Aluminum Rod ? #1513771
10/07/13 10:05 PM
10/07/13 10:05 PM
Joined: Jan 2003
Posts: 2,155
Tucson, Arizona
clonestocker Offline OP
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clonestocker  Offline OP
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How many of you racers out there actually pull the pan and loosen the rod bolts during the off season? I'm asking this question based on the BME maintenance procedure. Needing some input. thx matt


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Re: Aluminum Rod ? [Re: clonestocker] #1513772
10/07/13 11:08 PM
10/07/13 11:08 PM
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Delray beach, Florida
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Performance Only Offline
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I've known people who didn't and then wished they did when the rods exited the block later on.
As far as I'm concerned, I don't want to use any self cracking connecting rods in anything I build. I'll stick to GRP rods, no BME for me, thank you.


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Re: Aluminum Rod ? [Re: clonestocker] #1513773
10/08/13 01:25 AM
10/08/13 01:25 AM
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Posts: 197
Nor-Cal
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loaderpro Offline
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I never have...30 years with Howards and never an issue. It does get freshened up each winter but goes right back together. There are a lot more reasons for having an aluminum rod failure than leaving the bolts torqued up.

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Re: Aluminum Rod ? [Re: loaderpro] #1513774
10/08/13 01:46 AM
10/08/13 01:46 AM
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SOUTH JERSEY
HEMIFRED Offline
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yes I did it the last time I loosened the valve springs. 30 seasons ago


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Re: Aluminum Rod ? [Re: clonestocker] #1513775
10/08/13 07:24 AM
10/08/13 07:24 AM
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MI, usa
dvw Offline
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Quote:

How many of you racers out there actually pull the pan and loosen the rod bolts during the off season? I'm asking this question based on the BME maintenance procedure. Needing some input. thx matt




I talked to Bill Miller himself about this issue. He told me what can happen is a type of corrosion that can cause a crack parallel to the bolt hole. I was told that there will be no partial or beginning crack. Either it will be cracked or nothing at all. That being said my short block sat for several years before I used it. I had no issues. This winter I'm going to check my rod bearings anyway. I'll just leave everything loose until spring.
Doug

Re: Aluminum Rod ? [Re: dvw] #1513776
10/08/13 07:43 AM
10/08/13 07:43 AM
Joined: May 2003
Posts: 6,569
Downtown Roebuck Ont
Twostick Offline
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Downtown Roebuck Ont
I would think if it was corrosion causing the problem, you wouldn't want the bolts or the bearings in the rod at all.

Kevin

Re: Aluminum Rod ? [Re: Twostick] #1513777
10/08/13 08:09 PM
10/08/13 08:09 PM
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MI, usa
dvw Offline
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Quote:

I would think if it was corrosion causing the problem, you wouldn't want the bolts or the bearings in the rod at all.

Kevin



That info was relayed to me from Mr. Miller himself.
Doug

Re: Aluminum Rod ? [Re: dvw] #1513778
10/08/13 08:15 PM
10/08/13 08:15 PM
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Akron, Ohio U.S.A.
roadhazard Offline
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So happy I read this thread
Mine have only been loosened once since '99
Never heard this before and hope it don't bring me bad ju-ju

Re: Aluminum Rod ? [Re: dvw] #1513779
10/08/13 08:23 PM
10/08/13 08:23 PM
Joined: May 2003
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Downtown Roebuck Ont
Twostick Offline
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I wasn't disagreeing just commenting. I think the reaction between dissimilar metals is called galvanic corrosion or something like that so steel rod bolts and bearing shells I suppose technically could cause a problem when in close contact with aluminum.

Kevin

Re: Aluminum Rod ? [Re: Twostick] #1513780
10/08/13 09:54 PM
10/08/13 09:54 PM
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MI, usa
dvw Offline
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Quote:

I wasn't disagreeing just commenting. I think the reaction between dissimilar metals is called galvanic corrosion or something like that so steel rod bolts and bearing shells I suppose technically could cause a problem when in close contact with aluminum.

The type of corrosion he mentioned had something to do with oil and the bolt material, not dissimiler metals.
Doug

Kevin



Re: Aluminum Rod ? [Re: dvw] #1513781
10/09/13 04:45 PM
10/09/13 04:45 PM
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Posts: 2,678
Stuttgart, Arkansas
rickseeman Offline
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I guess I've heard it all now. Back your rod bolts off during the off season. Yea right. What if you are somewhere they race year round? Are you supposed to back them off during the week?


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Re: Aluminum Rod ? [Re: rickseeman] #1513782
10/10/13 06:18 PM
10/10/13 06:18 PM
Joined: Apr 2005
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Salt Lake City
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camastomcat Offline
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Here's some food for thought.......what's worse, letting them stay connected and move with the material in the warm and the cold, or stretching the aluminum every time they are re-torqued? It sounds kinda ridiculous to me. I've been running aluminum for 12 years now, and no issues that didn't have another reason attached. Rule #1, never rev motor until it gets warmed up, and #2 don't roll it over or start it when the temp is below 20F.

Re: Aluminum Rod ? [Re: rickseeman] #1513783
10/11/13 04:13 PM
10/11/13 04:13 PM
Joined: Oct 2004
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Left Coast
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BobR Offline
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Left Coast
Quote:

I guess I've heard it all now. Back your rod bolts off during the off season. Yea right. What if you are somewhere they race year round? Are you supposed to back them off during the week?




We often go 2-3 months between races and have never backed anything off. We use Bill Miller rods because we think they work the best. I've seen and heard of others fail. The trick with aluminum rods is to count your runs and when they get to where you feel they should be changed then change them.

Re: Aluminum Rod ? [Re: BobR] #1513784
10/12/13 03:41 PM
10/12/13 03:41 PM
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Posts: 4,210
New York
polyspheric Offline
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New York
Wasn't it Bill Jenkins that said "We take them out of the motor every 60 runs even if they look good. Before you throw them away, hit them with a big hammer so you won't be tempted to take them out of the trash."


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Re: Aluminum Rod ? [Re: polyspheric] #1513785
10/13/13 04:07 AM
10/13/13 04:07 AM
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SOUTH JERSEY
HEMIFRED Offline
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Quote:

Wasn't it Bill Jenkins that said "We take them out of the motor every 60 runs even if they look good. Before you throw them away, hit them with a big hammer so you won't be tempted to take them out of the trash."




back the the metal was a much poorer quality and design improvments add to a longer life


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Re: Aluminum Rod ? [Re: HEMIFRED] #1513786
10/13/13 02:10 PM
10/13/13 02:10 PM
Joined: Aug 2003
Posts: 43,286
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Quote:

Quote:

Wasn't it Bill Jenkins that said "We take them out of the motor every 60 runs even if they look good. Before you throw them away, hit them with a big hammer so you won't be tempted to take them out of the trash."




back the the metal was a much poorer quality and design improvments add to a longer life




Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Aluminum Rod ? [Re: HEMIFRED] #1513787
10/13/13 02:25 PM
10/13/13 02:25 PM
Joined: Dec 2006
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Hot 340 Offline
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Quote:

Quote:

Wasn't it Bill Jenkins that said "We take them out of the motor every 60 runs even if they look good. Before you throw them away, hit them with a big hammer so you won't be tempted to take them out of the trash."




back the the metal was a much poorer quality and design improvments add to a longer life


I work with dozens of metals each week and I cant agree with this statement. But design improvements yes.

Re: Aluminum Rod ? [Re: Hot 340] #1513788
10/13/13 05:11 PM
10/13/13 05:11 PM
Joined: Jul 2010
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SOUTH JERSEY
HEMIFRED Offline
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HEMIFRED  Offline
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SOUTH JERSEY
Quote:

Quote:

Quote:

Wasn't it Bill Jenkins that said "We take them out of the motor every 60 runs even if they look good. Before you throw them away, hit them with a big hammer so you won't be tempted to take them out of the trash."




back the the metal was a much poorer quality and design improvments add to a longer life


I work with dozens of metals each week and I cant agree with this statement. But design improvements yes.




note :back then mostly forged rods vs current billet


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