Author Topic: ESR Power Valve (Read 14319 times)

rablack21 · « **Reply #30 on:** March 02, 2016, 09:07:37 PM »

If the engine is running fine, I wouldn't replace the piston. The damage has already been done. As long as it was holding good compression, run it until it needs new rings. Then get the cylinder honed at your cylinder shop just enough to clean up the scuffing, and sand the piston slightly with a fine grit sand paper until smooth.

Also next time you get the cylinder bored, have them set the piston clearance to .003 or a tad over. My 310 cylinder with a forged piston didn't like anything less without getting the old 4 corner seizure marks.

tylermx71 · « **Reply #31 on:** March 03, 2016, 10:24:39 AM »

Quote from: rablack21;65133

If the engine is running fine, I wouldn't replace the piston. The damage has already been done. As long as it was holding good compression, run it until it needs new rings. Then get the cylinder honed at your cylinder shop just enough to clean up the scuffing, and sand the piston slightly with a fine grit sand paper until smooth.

Also next time you get the cylinder bored, have them set the piston clearance to .003 or a tad over. My 310 cylinder with a forged piston didn't like anything less without getting the old 4 corner seizure marks.

Thanks ill remember that when I do the top end again. I It runs great, im not sure on the compression but when I kick it over it feels pretty healthy.

hontrx265r · « **Reply #32 on:** March 04, 2016, 12:49:25 AM »

Try a different needle diameter. Like a dgj or dgk. My 310 ran 42-48 pilot.

tylermx71 · « **Reply #33 on:** March 05, 2016, 12:19:26 AM »

I just installed the powervalve and wow what a difference! I havent taken it in the dirt but it feels way more powerful down low. It feels like it has more torque and pulls harder everywhere. Thanks for the help everyone

FerrinMotorsports · « **Reply #34 on:** March 06, 2016, 03:25:26 PM »

And another believer in the power valve.......lol

kb250r · « **Reply #35 on:** March 06, 2016, 05:32:25 PM »

Quote from: FerrinMotorsports;65205

And another believer in the power valve.......lol

Man that's good it give you what u wanted and worked out...how did you adjust it/set it up? did Eddie send instructions for set up and dialing in the PV?

Michael88R · « **Reply #36 on:** March 06, 2016, 11:48:44 PM »

Glad u r happy with it. It's good that ur cylinder can go both ways to really get a good comparison. I always thought my PV wasn't doing much but it must be doing more than I thought.

rablack21 · « **Reply #37 on:** March 08, 2016, 08:18:50 AM »

Quote from: kb250r;65208

Man that's good it give you what u wanted and worked out...how did you adjust it/set it up? did Eddie send instructions for set up and dialing in the PV?

I spoke with Eddie in detail about this in the past. This is what he told me. He typically like to set them where they are just barely compressing the spring. If he wanted a touch more bottom end, he will turn it up to about 5 turns in, but that's it. He said they typically tend to perform the best for all around balance power just compressing the spring a couple turns.

tylermx71 · « **Reply #38 on:** March 10, 2016, 10:41:19 AM »

Quote from: rablack21;65268

I spoke with Eddie in detail about this in the past. This is what he told me. He typically like to set them where they are just barely compressing the spring. If he wanted a touch more bottom end, he will turn it up to about 5 turns in, but that's it. He said they typically tend to perform the best for all around balance power just compressing the spring a couple turns.

Thanks guys. Yes this is pretty much what he told me also. I got the powervalve already assembled and everything red locktited ready to go. I turned in the adjuster a couple turns and it works great the way it is, perfect balance of low end grunt and top end.