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Re: SB 4125 K1 CRANKSHAFT [Re: Quicktree] #866560 11/29/10 11:31 PM 11/29/10 11:31 PM
Joined: Jul 2010 Posts: 2,091 Delray beach, Florida P Performance Only top fuel
Performance Only top fuel P Joined: Jul 2010 Posts: 2,091 Delray beach, Florida	Quote: Quote: Quote: I have one, I think ask Dan he should be setting mine up to fit my block yes, i have yours and a couple others. we've already had yours in the grinder to check index, stroke, taper and out of round. i don't see how any crank could measure any better than this one did. K-1 is doing an outstanding job on their stuff. aside from a litle extra time to check it all out, they really make my job a lot easier when it comes to putting all the pieces together. thats great but im still not messing with your pinion angle thank goodness for that. machine shop owner and engine builder

Re: SB 4125 K1 CRANKSHAFT [Re: Performance Only] #866561 11/30/10 12:58 AM 11/30/10 12:58 AM
Joined: Nov 2006 Posts: 370 Queensland Australia M moparmacka OP enthusiast
moparmacka OP enthusiast M Joined: Nov 2006 Posts: 370 Queensland Australia	Leon, why do you prefer to have the oil rings at the pin height. Will it matter that this engine will see alot of street miles also....I heard that the 4.125 doesn't offer the duarbility of a 4.000??????

Re: SB 4125 K1 CRANKSHAFT [Re: AndyF] #866562 11/30/10 01:01 AM 11/30/10 01:01 AM
Joined: Nov 2006 Posts: 370 Queensland Australia M moparmacka OP enthusiast
moparmacka OP enthusiast M Joined: Nov 2006 Posts: 370 Queensland Australia	Andy can you point me in the direction of that info? Macka

Re: SB 4125 K1 CRANKSHAFT [Re: moparmacka] #866563 11/30/10 02:32 AM 11/30/10 02:32 AM
Joined: Jan 2003 Posts: 31,042 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,042 Oregon	Quote: Andy can you point me in the direction of that info? Macka http://www.moparts.org/Tech/Archive/smallblock.html

Re: SB 4125 K1 CRANKSHAFT [Re: moparmacka] #866564 11/30/10 02:38 AM 11/30/10 02:38 AM
Joined: Jan 2003 Posts: 31,042 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,042 Oregon	Quote: Andy can you point me in the direction of that info? Macka Search is your friend! https://board.moparts.org/ubbthreads/show...part=1&vc=1

Re: SB 4125 K1 CRANKSHAFT [Re: AndyF] #866565 11/30/10 03:18 AM 11/30/10 03:18 AM
Joined: Nov 2004 Posts: 354 K kielbasa enthusiast
kielbasa enthusiast K Joined: Nov 2004 Posts: 354	Yes, I've also been curious as to how durable these strokers will be for street life. 5K, 10K, 50K miles?????? I understand there are a ton of variables to answer that question, but if one is to drive these for 5k street miles a year (along with the occasional blast down the strip), how long before the piston skirts etc. get clapped out and time for a rebuild? Anybody here with firsthand experience that's run one for a few miles?

Re: SB 4125 K1 CRANKSHAFT [Re: AndyF] #866566 11/30/10 04:02 AM 11/30/10 04:02 AM
Joined: Nov 2006 Posts: 370 Queensland Australia M moparmacka OP enthusiast
moparmacka OP enthusiast M Joined: Nov 2006 Posts: 370 Queensland Australia	Thanks, I will have a read

Re: SB 4125 K1 CRANKSHAFT [Re: AndyF] #866567 11/30/10 04:09 AM 11/30/10 04:09 AM
Joined: Nov 2006 Posts: 370 Queensland Australia M moparmacka OP enthusiast
moparmacka OP enthusiast M Joined: Nov 2006 Posts: 370 Queensland Australia	Do you think durability may be an issue with the long arm??? Again a fair few street miles will in order with this too. I'm starting lean toward the 4.125 stroke and 4.125 OR possibly bigger bore with 6.200 rod. What is the absolute max with these siamese blocks? i like the idea of oil pump and pick up clearing the 4.125 with the chev journal too.

Re: SB 4125 K1 CRANKSHAFT [Re: moparmacka] #866568 11/30/10 01:18 PM 11/30/10 01:18 PM
Joined: Jan 2003 Posts: 31,042 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,042 Oregon	I don't see why durability should be much of a factor. What you're building is similiar in dimensions to a Chevy 454. That Chevy 454 combination was used for millions of vehicles ranging from street cars to pickup trucks.

Re: SB 4125 K1 CRANKSHAFT [Re: AndyF] #866569 11/30/10 03:23 PM 11/30/10 03:23 PM
Joined: Nov 2004 Posts: 354 K kielbasa enthusiast
kielbasa enthusiast K Joined: Nov 2004 Posts: 354	454 has either 9.8 or 10.2" of deck height vs 9.6 for sbm, throw in a 6.2 rod (vs the 454's 6.135) - i would think the 454 will have a taller, more stable piston, yes?

Re: SB 4125 K1 CRANKSHAFT [Re: AndyF] #866570 11/30/10 05:31 PM 11/30/10 05:31 PM
Joined: Nov 2006 Posts: 370 Queensland Australia M moparmacka OP enthusiast
moparmacka OP enthusiast M Joined: Nov 2006 Posts: 370 Queensland Australia	That is exactly what friend said to me yesterday!!! I was thinking along the lines of the smaller piston though. Thanks Macka

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