Powervalve trimming?
-
- Supporting Member
- Posts: 739
- Joined: 08:28 am Apr 21 2019
- Country: United States
- Location: North Cackalack
Powervalve trimming?
I’m considering getting a box ‘87. Guy has everything in boxes, and the bottom end is rebuilt already.
Here’s my question. The cylinder is sleeved and needs work. If you bore one of these, do you need to trim the power valves? How much would that cost? Is it better to just resleeve? Should I even bother?
Thanks for any insight on this. I’m almost hoping I don’t end up with another project.
Here’s my question. The cylinder is sleeved and needs work. If you bore one of these, do you need to trim the power valves? How much would that cost? Is it better to just resleeve? Should I even bother?
Thanks for any insight on this. I’m almost hoping I don’t end up with another project.
I like turtles
- KDXGarage
- KDXRider.net
- Posts: 14119
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Powervalve trimming?
OMG. The one on Facebook Marketplace in SC for $900?!
1986 - 1988 don't have a flapper valve or middle drum / valve, so that would not apply, I don't think.
How bad is the sleeve?? It might can be bored and honed (and ports chamfered).
Hopefully it does not need a new sleeve.
1986 - 1988 don't have a flapper valve or middle drum / valve, so that would not apply, I don't think.
How bad is the sleeve?? It might can be bored and honed (and ports chamfered).
Hopefully it does not need a new sleeve.
Thank you for participating on kdxrider.net.
To post pictures from a device: viewtopic.php?f=88&t=24128
To post pictures from a device: viewtopic.php?f=88&t=24128
-
- Supporting Member
- Posts: 739
- Joined: 08:28 am Apr 21 2019
- Country: United States
- Location: North Cackalack
Re: Powervalve trimming?
KDXGarage wrote: ↑09:37 pm Jul 02 2019 OMG. The one on Facebook Marketplace in SC for $900?!
1986 - 1988 don't have a flapper valve or middle drum / valve, so that would not apply, I don't think.
How bad is the sleeve?? It might can be bored and honed (and ports chamfered).
Hopefully it does not need a new sleeve.
Is this what you saw?
The sleeve looks really good. Half a mm should do the job. I’m just not familiar with the powervalves. Crank was rebuilt, no up and down rod play, and the bottom was already put together. Something stopped this guy from rebuilding though. Did he find another good deal? Are the flywheel magnets thrown?
I like turtles
- KDXGarage
- KDXRider.net
- Posts: 14119
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Powervalve trimming?
Same one! HA HA!
Look on eBay at the 1986 - 1988 cylinders. You can see how the holes are a little bit away from the cylinder.
No way I would pay $900 for it. If you decide against it, I will rip it apart (nit pick it to death). If you get it, I will just say good luck!
Look on eBay at the 1986 - 1988 cylinders. You can see how the holes are a little bit away from the cylinder.
No way I would pay $900 for it. If you decide against it, I will rip it apart (nit pick it to death). If you get it, I will just say good luck!
Thank you for participating on kdxrider.net.
To post pictures from a device: viewtopic.php?f=88&t=24128
To post pictures from a device: viewtopic.php?f=88&t=24128
-
- Supporting Member
- Posts: 739
- Joined: 08:28 am Apr 21 2019
- Country: United States
- Location: North Cackalack
Re: Powervalve trimming?
He told me 600. I wouldn’t pay a dime over 400 for it, if everything is really there and nothing important is screwed up. Might have to use the ol’ bad flywheel magnets trick.KDXGarage wrote: ↑10:43 pm Jul 02 2019 Same one! HA HA!
Look on eBay at the 1986 - 1988 cylinders. You can see how the holes are a little bit away from the cylinder.
No way I would pay $900 for it. If you decide against it, I will rip it apart (nit pick it to death). If you get it, I will just say good luck!
I like turtles
- KDXGarage
- KDXRider.net
- Posts: 14119
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Powervalve trimming?
You can get one that runs for $1,000.
People have lost their minds on parts bikes. Bike in a box for $900. HELL NO
People have lost their minds on parts bikes. Bike in a box for $900. HELL NO
Thank you for participating on kdxrider.net.
To post pictures from a device: viewtopic.php?f=88&t=24128
To post pictures from a device: viewtopic.php?f=88&t=24128
-
- Supporting Member
- Posts: 739
- Joined: 08:28 am Apr 21 2019
- Country: United States
- Location: North Cackalack
Re: Powervalve trimming?
Not even 1000. And who knows what issues I’ll run into. I respect the rebuilt bottom end, but who just gives up on a project they’ve committed to and buys another bike? There’s a piece of this puzzle missing. I really want to buy it to rebuild it.
I like turtles
- Molly's 70
- Platinum Member
- Posts: 569
- Joined: 04:29 pm Jun 18 2017
- Country: USA
- Location: Wichita, Kansas USA
Re: Powervalve trimming?
I'd offer $100 & walk at $150. He can ebay it. I would gladly overpay for a well preserved KDX.
If you lend someone $20, and never see that person again, it was probably worth it.
- KDXGarage
- KDXRider.net
- Posts: 14119
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Powervalve trimming?
It needs the forks rebuilt, shock rebuilt, how old are the tires and tubes, new top end AND bore / hone, reeds?
chain and sprockets?
ON and ON and ON
EXPENSIVE linkage bearings?
chain and sprockets?
ON and ON and ON
EXPENSIVE linkage bearings?
Thank you for participating on kdxrider.net.
To post pictures from a device: viewtopic.php?f=88&t=24128
To post pictures from a device: viewtopic.php?f=88&t=24128
-
- Supporting Member
- Posts: 739
- Joined: 08:28 am Apr 21 2019
- Country: United States
- Location: North Cackalack
Re: Powervalve trimming?
THERE’S that puzzle piece I was talking about.
You guys are probably right about having to rebuild this stuff. I’m too optimistic in hoping he’s at least done something to it.
Lordy, those linkage bearings.
I like turtles
-
- Supporting Member
- Posts: 739
- Joined: 08:28 am Apr 21 2019
- Country: United States
- Location: North Cackalack
Re: Powervalve trimming?
Update: went back and forth with the poor guy. He won’t budge off of his 600 (he wants his money back). Not my fault he’s knee deep in shitake mushrooms. Oh well.
I like turtles
- KDXGarage
- KDXRider.net
- Posts: 14119
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Powervalve trimming?
YOU WON!!
I find it REALLY TOUGH to walk away from a bike, but I think you did the right thing on this one.
Congratulations on walking away from a too high price.
I find it REALLY TOUGH to walk away from a bike, but I think you did the right thing on this one.
Congratulations on walking away from a too high price.
Thank you for participating on kdxrider.net.
To post pictures from a device: viewtopic.php?f=88&t=24128
To post pictures from a device: viewtopic.php?f=88&t=24128
-
- Supporting Member
- Posts: 739
- Joined: 08:28 am Apr 21 2019
- Country: United States
- Location: North Cackalack
Re: Powervalve trimming?
I wish I could post our messages
He bought a bike in pieces, when I asked if it ran before it was torn down the guy said “PO rode it for years” (likely a bad thing)
He’s a clown. I can’t even confirm that it sparks. He’s bitten off more than he could chew.
I like turtles
- KDXGarage
- KDXRider.net
- Posts: 14119
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Powervalve trimming?
screenshot them. LOL
Bike in a box, $900. Still sounds silly.
Bike in a box, $900. Still sounds silly.
Thank you for participating on kdxrider.net.
To post pictures from a device: viewtopic.php?f=88&t=24128
To post pictures from a device: viewtopic.php?f=88&t=24128
-
- Supporting Member
- Posts: 739
- Joined: 08:28 am Apr 21 2019
- Country: United States
- Location: North Cackalack
Re: Powervalve trimming?
Nahh I don’t wanna put him out there like that. I will say some pretty silly stuff was said.
I like turtles
- KDXGarage
- KDXRider.net
- Posts: 14119
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Powervalve trimming?
HA HA HA HA!! Good enough to make me lough out loud!
Thank you for participating on kdxrider.net.
To post pictures from a device: viewtopic.php?f=88&t=24128
To post pictures from a device: viewtopic.php?f=88&t=24128
-
- Supporting Member
- Posts: 739
- Joined: 08:28 am Apr 21 2019
- Country: United States
- Location: North Cackalack
Re: Powervalve trimming?
This was the best one - He said there probably isn’t a big market for parts. I said that the flywheels can be sold for almost 200 in good condition because a lot of them break. He responds, “Well there ya go you’ve got a parts bike for 400!”
I like turtles
- KDXGarage
- KDXRider.net
- Posts: 14119
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Powervalve trimming?
I wouldn't have told him that. You only strengthened is resolve. :-)
Thank you for participating on kdxrider.net.
To post pictures from a device: viewtopic.php?f=88&t=24128
To post pictures from a device: viewtopic.php?f=88&t=24128