My friend has a 02 edge 156 snow check 800. He has blown 1 motor every year for the last 3 years. so far its been rod bearings every time. granted the shop only put one rod bearing in each time, not replacing both at the same time. so last season they gave him a good running 800 motor in trade for his blown motor that they had rebuilt twice before. my question is could the psi single pipe that he has on his sled be hard on rod bearings? Each motor had around 300-400 mile and boom, this last motor only has 3 rides on it.
02 V-Edge
- Thread starter Mnt.Tamer
- Start date
Rod bearings getting trashed says to me there is a detonation issue (need better fuel). Is this a stock motor with a PSI single or are there other mods?
stock motor
It has reeds and a psi pipe, always run 91 octane E free. May be we should run it with a gallon or 2 of race fuel. or is there a better pipe like slp?
It has reeds and a psi pipe, always run 91 octane E free. May be we should run it with a gallon or 2 of race fuel. or is there a better pipe like slp?
jetting
400 pto and 410 on the mag 3-6K feet.
400 pto and 410 on the mag 3-6K feet.
??
I don't know, I will try to find out
I don't know, I will try to find out
I've never heard of PSI and reliability used together in a positive way. In my opinion over priced junk sold by a snake oil sales man with good marketing skills. The unfortunate fact is that there is no way their stuff can be made to back up their claims, regardless of setup, elevation or any of the excuses they offer up when it falls short of even stock performance.
Maybe he lets the sled sit outside in those cold Montana temperatures and then fails to warm it up properly, before going WOT. 430's or fatter would be a better main jet size, considering the Montana temperatures.
both
1st it was the mag side then the pto then the mag side again, We could try and go up on the jet size, but piston wash looks good now. I have a 03 VE and I run the slp pipe and reeds. I have never had any issues, That is why I was wondering if the pipe could cause this or not
1st it was the mag side then the pto then the mag side again, We could try and go up on the jet size, but piston wash looks good now. I have a 03 VE and I run the slp pipe and reeds. I have never had any issues, That is why I was wondering if the pipe could cause this or not
For the sake of discussion, lets say oiling is good.
I can't imagine a single pipe and reeds pushing the motor over the edge to needing race fuel, but maybe if the ignition timing is over advanced? Just because a motor has a deto sensor doesn't mean deto can't kill it. Deto has to happen to be detected, so while each occurrence on its own may not cause much damage, repeated cycle of: [deto, detecting of deto, and the resulting timing retardation the PCM initiates to save the motor] will add up and could eventually be beating out the rod pin bearings.
My PTO side rod bearing was flattened last spring. Throughout last season, maybe every 3rd ride, I'd see the deto sensor flash at me at some point during the day. I kept riding it, didn't really change anything except some jetting. This was with SLP race twins, but otherwise stock motor, 29* BTDC timing at 8-12'k. It was difficult to see, but there were little tiny indentations around the edge of that PTO piston, further confirming the deto.
Take a very close look at the pistons, especially around the perimeter, and look for small pits/indents. May need a magnifying lens if your eyes aren't as sharp as they once were. If you see these indents on both you may have had deto in both cylinders and its just chance which once breaks first.
As stated, check oiling. Check timing. Could go with a better designed head than stock, or a gallon/two of 110 per tank.
Disclaimer!: Just so you're aware, I'm just a guy that reads too much, not a real expert.
Edit: Just saw your buddies sled is an 02, so not det sensor. Look real close at the pistons.
I can't imagine a single pipe and reeds pushing the motor over the edge to needing race fuel, but maybe if the ignition timing is over advanced? Just because a motor has a deto sensor doesn't mean deto can't kill it. Deto has to happen to be detected, so while each occurrence on its own may not cause much damage, repeated cycle of: [deto, detecting of deto, and the resulting timing retardation the PCM initiates to save the motor] will add up and could eventually be beating out the rod pin bearings.
My PTO side rod bearing was flattened last spring. Throughout last season, maybe every 3rd ride, I'd see the deto sensor flash at me at some point during the day. I kept riding it, didn't really change anything except some jetting. This was with SLP race twins, but otherwise stock motor, 29* BTDC timing at 8-12'k. It was difficult to see, but there were little tiny indentations around the edge of that PTO piston, further confirming the deto.
Take a very close look at the pistons, especially around the perimeter, and look for small pits/indents. May need a magnifying lens if your eyes aren't as sharp as they once were. If you see these indents on both you may have had deto in both cylinders and its just chance which once breaks first.
As stated, check oiling. Check timing. Could go with a better designed head than stock, or a gallon/two of 110 per tank.
Disclaimer!: Just so you're aware, I'm just a guy that reads too much, not a real expert.
Edit: Just saw your buddies sled is an 02, so not det sensor. Look real close at the pistons.
Thanks
Will do, I will check the oil and I think I will add 2 gallons of race fuel for now to be safe, he has not had it out this year (Blowing a motor every year, for 3 years has a way of sucking the fun out of riding) I will also check the pistons for dings.
Will do, I will check the oil and I think I will add 2 gallons of race fuel for now to be safe, he has not had it out this year (Blowing a motor every year, for 3 years has a way of sucking the fun out of riding) I will also check the pistons for dings.
