MO
Expert Class
Posts: 128
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posted November 21, 2001 11:11 PM
1361rpm vs stock rpm
Just a thougt is any one ajusting the rev limiter when building stroker motors? could this lead to bearing failure?I think I will try the 1270. I see super bike mike has a 1320 kit but theres no info on the the web page any body seen one?
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KW
   
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krexken
Zone Head
Posts: 732
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posted November 22, 2001 10:34 PM
Rod or crank failure is more likely. Carpenter Racing bores the stock block to 1290. Lowering the rev limit would be a good idea but other than a Muzzy ECU, I'm not sure how you could do it. I suppose an MSD or Dyna limiter could be wired to the stock ECU but I'm not sure.
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MO
Expert Class
Posts: 128
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posted November 23, 2001 01:29 PM
a big bore 1270 1290 1320? should be fine with the stock red line but a stroker motor has a lower red line I would think hitting the stock rev limiter with a stroked motor is red lining hard! the extra force ceated by excesive piston speed could stretch a rod bolt and spin a bearing. just something to think about
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KW
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krexken
Zone Head
Posts: 732
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posted November 23, 2001 06:17 PM
Yep, rod stretch is a factor but it's the big kablooey that scares me worse. I'm in the process of installing Muzzys 1361 kit in mine right now. I'm kinda regretting getting the stroker kit. It's definitely not going to be as rev happy as before and it's lifespan will probably(alright, surely) be reduced. The Dyna DLR300 rev limiter is only $80 and will be good insurance on my investment(assuming it will work on this bike). I looked at aftermarket rods but the guys at Muzzys assured me if the engine is kept near it reduced peak hp, rods aren't a problem. We'll see.
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