Slant Six Forum :: S.P.M. connecting rods

7.5"

The amount of work was a bit more than Tony expected. They came out at $469 Shipped/Insured. Each.
I don't think he'd build them for that again.

They came out at $469 Shipped/Insured. Each.

The other question: Why? $3k goes a long way... Not trying to be a snot, just askin'...

Lou

My concern was the 7.5" length. That long of a rod will kill any torque this thing was thinking about making

K-1 refused, and from the crap they've sent out I'm lucky.

Too long of a rod overleverages the motor and actually creates friction instead of diminishing it.

Many of the K-1 rod sets had machining issues. When asked about the origin of his rods Tom at K-1 assured everyone that even though the forgings were Chinese, all the machining was done in country to the highest standards. Some have had the bearing tang slot on the wrong side, others had too small of a slot.

Author:	MJF [ Tue Jan 31, 2012 2:37 am ]
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How long are these? 7,2"? 7,5"?

Author:	ceej [ Tue Jan 31, 2012 6:13 am ]
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7.5" The amount of work was a bit more than Tony expected. They came out at $469 Shipped/Insured. Each. I don't think he'd build them for that again. CJ

Author:	Dart270 [ Tue Jan 31, 2012 7:40 am ]
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Aluminum or titanium? Alum I bet, but just checking... Lou

Author:	Shaker223 [ Tue Jan 31, 2012 7:44 am ]
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Quote: 7.5" The amount of work was a bit more than Tony expected. They came out at $469 Shipped/Insured. Each. I don't think he'd build them for that again. CJ Each = per rod?

Author:	raPoM [ Tue Jan 31, 2012 7:48 am ]
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Quote: 7.5" The amount of work was a bit more than Tony expected. They came out at $469 Shipped/Insured. Each. I don't think he'd build them for that again. CJ Not bad for a custom set,now people cant say that all of us slant six guys are cheap

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Author:	SlantSixDan [ Tue Jan 31, 2012 9:27 am ]
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Quote: They came out at $469 Shipped/Insured. Each. (Wellnow. It appears my automatic choke is working.)

Author:	ceej [ Tue Jan 31, 2012 12:34 pm ]
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That would be Titanium. Each. Per rod. CJ

Author:	MJF [ Tue Jan 31, 2012 1:12 pm ]
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Thats crazy Where are these going?

Author:	Dart270 [ Tue Jan 31, 2012 2:20 pm ]
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The other question: Why? $3k goes a long way... Not trying to be a snot, just askin'... Lou

Author:	slantzilla [ Tue Jan 31, 2012 2:43 pm ]
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Quote: The other question: Why? $3k goes a long way... Not trying to be a snot, just askin'... Lou I had that conversation with him before he bought them Lou. I didn't do any good. My concern was the 7.5" length. That long of a rod will kill any torque this thing was thinking about making, but I think he's gonna put a blower on it, so that will help. Ceej, will he do rods in steel? I kinda want a set of 6.7" steel rods. K-1 refused, and from the crap they've sent out I'm lucky.

Author:	SlantSixDan [ Tue Jan 31, 2012 2:51 pm ]
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Quote: My concern was the 7.5" length. That long of a rod will kill any torque this thing was thinking about making How? I'm not trying to challenge you, I'm just curious on the operational theory you have in mind. Quote: K-1 refused, and from the crap they've sent out I'm lucky. More info, plee-uzâ€¦have their been quality problems with the K-1 rods?

Author:	slantzilla [ Tue Jan 31, 2012 3:03 pm ]
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Too long of a rod overleverages the motor and actually creates friction instead of diminishing it. (That's one of the supposed advantages of the longer rod builds) Will it be an issue? Maybe, maybe not. Rod angularity is a topic that has just about as much room for argument as an aluminum head thread. Many of the K-1 rod sets had machining issues. When asked about the origin of his rods Tom at K-1 assured everyone that even though the forgings were Chinese, all the machining was done in country to the highest standards. Some have had the bearing tang slot on the wrong side, others had too small of a slot. Kinda sad, because K-1 does have a very good reputation with a lot of premier engine shops.

Author:	MJF [ Tue Jan 31, 2012 3:12 pm ]
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It's not that long rod for 4.125" stroke. Stock 170 still has higher rod/stroke ratio, 198 even higher.

Author:	SlantSixDan [ Tue Jan 31, 2012 3:50 pm ]
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Quote: Too long of a rod overleverages the motor and actually creates friction instead of diminishing it. Yeah, I just haven't done the math to figure out if that would be a problem with this build. Maybe Ceej has. I guess it would also depend on whether the piston pins are offset, too, and by how much. Quote: Many of the K-1 rod sets had machining issues. When asked about the origin of his rods Tom at K-1 assured everyone that even though the forgings were Chinese, all the machining was done in country to the highest standards. Some have had the bearing tang slot on the wrong side, others had too small of a slot. Yuck. Nothing to go neener-neener-neener about, though I do seem to recall raising my eyebrow to the upright-and-quality-from-China position back when the K-1 rods were first announced, and my concerns being dismissed as nothing but baseless racist bigotry. Guess there musta been more to it than that.

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Author:	slantzilla [ Tue Jan 31, 2012 5:28 pm ]
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Dan, the China part seems to be fine, it the US machining that seems to be the issue.