Raylar- Nothing but problems
08-04-2010, 11:35 AM
#21
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Hawks, I would most definitely have someone re-torque your heads and check the adjustment on your valve train. Good luck going forward.
08-04-2010, 11:39 AM
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Gas was brand new. It was so low when we where having problems right after doing the kit that we took it and put 20 Gallons in to make sure it wasn't a problem, then filled it on the way to the river (no ethanol).
You guys talking about the cast pistons are making my point. Don't mess with the 496. Ray isn't going to tell you this.
You guys talking about the cast pistons are making my point. Don't mess with the 496. Ray isn't going to tell you this.
08-04-2010, 12:10 PM
#23
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Not picking sides. But going back to the first motor,I for one would never run a motor with the improper ecm,or ecm tune for that matter.The ecm that Ray provides is tuned to his particular kit.You stated how rich the motor was running and still choose to take it out. Just my 2 cents
08-04-2010, 12:20 PM
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Not picking sides. But going back to the first motor,I for one would never run a motor with the improper ecm,or ecm tune for that matter.The ecm that Ray provides is tuned to his particular kit.You stated how rich the motor was running and still choose to take it out. Just my 2 cents
Ray told me to. He also said that they were programmed the same.
08-04-2010, 12:23 PM
#25
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From the post-mortem done by Ray on the first motor, it sounds like the piston broke from over-speed. A chance you take when pushing a mass-produced, production motor spec'd hypereutic piston beyond its intended operating speed. As for the second motor, do some searches on Raylar valve springs and rocker arm retaining nuts.
08-04-2010, 12:37 PM
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from an old thread.
It sound like your upgrade kit is a good package,what brand rocker nuts are failing,do you have solid info on the time frame of the bad batch? The reason I ask is in first 15 hours of run time this year on the new motor I built I had several comp cam pro-magnum rocker nuts crack right below the adjuster hex and back off ,once it caused moderate damage. They were bought in march or april of 05. I tighten them by feel to around 15 foot lbs. I have used different versions of locking rocker nuts on at least 50 different motors Ive built and other than this motor I have only had a nut crack once in the past (It was a cheap imported looking harland- sharp). I ended up switching all the rocker nuts to arp's and haven't had any more breakage in 30 hours of run time,Smitty
08-04-2010, 01:28 PM
#27
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Interesting read, usually at this point Raylar chimes in for his version. I'd like to hear that side also.
<<Also it is my understanding that 8.1's come with hyper-eutectic pistons.>>
With regard to the weak hyper pathetic pistions (old term), could a guy put stronger pistons in to alleviate that problem?
Or, does this get you in to just rebuilding the thing top to bottom to make it stay together. ...which would also not really be a 'bolt on kit'
Great thread, keep it going.
<<Also it is my understanding that 8.1's come with hyper-eutectic pistons.>>
With regard to the weak hyper pathetic pistions (old term), could a guy put stronger pistons in to alleviate that problem?
Or, does this get you in to just rebuilding the thing top to bottom to make it stay together. ...which would also not really be a 'bolt on kit'
Great thread, keep it going.
08-04-2010, 03:28 PM
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