Bad one

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wwmtlineman
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Re: Bad one

Post by wwmtlineman »

Nothing that JB Weld cant handle
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Dave Koehler
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Re: Bad one

Post by Dave Koehler »

exhaustgases wrote: Sat Aug 18, 2018 7:47 pm
midnightbluS10 wrote: Sat Aug 18, 2018 4:21 am
exhaustgases wrote: Fri Aug 17, 2018 9:12 pm 540 Rat was right.
About?
I- Beam versus H- Beam.
You managed to diagnosis this as the first problem just like that? Come on.
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Re: Bad one

Post by Warp Speed »

Dave Koehler wrote: Sat Aug 18, 2018 8:09 pm
exhaustgases wrote: Sat Aug 18, 2018 7:47 pm
midnightbluS10 wrote: Sat Aug 18, 2018 4:21 am

About?
I- Beam versus H- Beam.
You managed to diagnosis this as the first problem just like that? Come on.
He did refer to Rat540........LOL
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Re: Bad one

Post by pdq67 »

Back in HS, my B-i-L's brother under him had the prettiest '56 Chevy 4-dr sedan with a 265 and a PG(Sp?) in it.

The sucker always had a knock in it .

Well, he was coming home late one Sat. night running down the Hwy at 55 to 60 mph or so and she went BOOM!!

He pulls her over and crawls under it and he see's a hole in the block.

Well he just gets back in her, cranks her up and drives it home about 7 or 8 miles! Sucker ran fine on 7 cylinders but it never ran again after he parked it.

Later we all figured that the constant knock was a broken piston skirt??? And it finally came unglued...

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Re: Bad one

Post by fordified »

Weren't we talking about the advantages of steel rods versus aluminum rods recently? :shock:
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Re: Bad one

Post by af2 »

Warp Speed wrote: Sat Aug 18, 2018 10:35 pm
Dave Koehler wrote: Sat Aug 18, 2018 8:09 pm
exhaustgases wrote: Sat Aug 18, 2018 7:47 pm

I- Beam versus H- Beam.
You managed to diagnosis this as the first problem just like that? Come on.
He did refer to Rat540........LOL
Damn H beam rods!!!!!!!!!!!
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Re: Bad one

Post by Keith Morganstein »

Worst I’ve seen ( connecting rod carnage) was on a 3406 CAT. A fleet truck was towed in, flipped the hood open and the block was about completely cut in half, just what was left of the cylinder head was holding the front and back of the the block together. Most of the twisted, bent connecting rod was sitting in the frame rail. It is an I-beam rod, and beefy.

The driver said he shut it right off.... after driving down a steep, two mile down grade. #-o
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Re: Bad one

Post by swampbuggy »

ExhaustGases....Surely you don't REALLY believe that an I-Beam connecting rod is absolutely, positively, for SURE a superior design to an H-Beam do you ?? Mark H. :-k
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Re: Bad one

Post by Keith Morganstein »

swampbuggy wrote: Sun Aug 19, 2018 9:00 pm ExhaustGases....Surely you don't REALLY believe that an I-Beam connecting rod is absolutely, positively, for SURE a superior design to an H-Beam do you ?? Mark H. :-k
It was an old “debate” on this site. Prob best left in the archives.
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Re: Bad one

Post by swampbuggy »

I know Keith, LOL Mark H. :lol:
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Re: Bad one

Post by Warp Speed »

Wiseco, that's who I'd go to for my connecting rod data! Hahaha
Seriously, people that don't know, or won't listen to the difference in designs, and their various merits, are at a loss. This has been beaten to death. Each design has it's strong and weak points. Similar to the aluminum vs steel deal. You can go on about bridges or cranes ect., but engines have far differing needs, and I've never seen either go down the strip or around the track. Lol
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Re: Bad one

Post by Geoff2 »

Warp,
Which do Nascar engines use, H or I beam or both? Reasons why one type might be used over another?
Thanks.
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Re: Bad one

Post by Warp Speed »

Geoff2 wrote: Wed Aug 22, 2018 5:44 am Warp,
Which do Nascar engines use, H or I beam or both? Reasons why one type might be used over another?
Thanks.
H beam, or a hybrid to lessen edge loading at the bores.
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Re: Bad one

Post by RevTheory »

Warp Speed wrote: Wed Aug 22, 2018 6:58 am H beam, or a hybrid to lessen edge loading at the bores.
Is there a crossover point in hp or maybe rpm where you'd want to switch over to an h-beam? Nothing I'm doing at the moment needs more than a SCAT i-beam but I'm always curious about future stuff.
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Re: Bad one

Post by n2xlr8n »

I'm not a ME, but in my mind, comparing the forces on a crane bridge I beam to any style connecting rod in an engine is not a viable comparison.

FWIW- I build cranes for a living :)

Back on topic, sorry.
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