Recent Purchase 87 CR500/CR250 tank install

TTperra
Posts
280
Joined
9/15/2015
Location
SE
2/8/2018 10:21am
wolfy0067 wrote:
Cylinder head is a temporary setup, have all my specs. figuring on sending it to Gorr for decompression and dome volume and angle reshaping. I see...
Cylinder head is a temporary setup, have all my specs. figuring on sending it to Gorr for decompression and dome volume and angle reshaping. I see a lot of info on this, however my piston protrudes above the cylinder surface.

Would love to find a spacer plate for the cylinder base, allowing me to have the cylinder flush with the deck and allowing the transfer ports to align properly, any input would be appreciated
Maby the cylinderbase is milled to get lower portduration?
How much is the piston over cylinder?
If its much the cylinderhead would have been reworked.
wolfy0067
Posts
487
Joined
8/14/2014
Location
Wernersville, PA US
2/8/2018 12:53pm
TT, I don't think so I was thinking it may have been an 86 short stroke with an 87 crankshaft, taking this enging apart, it was looking all original, never been disassembled.

I did the squish clearances 1.4mm, pretty tight for a 500, Gorr is in the process of doing a compression release for me. I would like to get the ports at BDC corrected by raising the cylinder to the proper height. I plan on making a spacer plate in the near future.

My goal will be to smooth the power delivery, may end up detuning to go faster.

Thanks!
wolfy0067
Posts
487
Joined
8/14/2014
Location
Wernersville, PA US
2/18/2018 5:58pm
Received cylinder head back from Eric Gorr, decompression valve and re shaped the squish to dome angle.



The Shop

wolfy0067
Posts
487
Joined
8/14/2014
Location
Wernersville, PA US
2/18/2018 6:14pm
Also had thine to work on the fuel tank and side panel, sanded and polished both, still working on finial figment of the tank, mounts are still about 10mm off. Tank sits so much lower, fuel valve to carb inlet are almost the same height.


out





wolfy0067
Posts
487
Joined
8/14/2014
Location
Wernersville, PA US
4/12/2018 2:57pm
Finished up the CR500, the 250

tank and radiator install was a bit more than it may look, made it for easy removal to convert back to origional tank radiators and shroudes, the last part will be replacing the outter clutch cover, plastic is mostly original and in great condition






xnewmanx
Posts
23
Joined
11/4/2020
Location
Buffalo, NY US
11/4/2020 9:14am Edited Date/Time 11/4/2020 9:14am
Bumping up this old thread:
I'm trying to bring an 87 cr500 back to life as well. I'm coming up short on a tank, though.

1) do you have the 87 tank? If so, would you sell it?


2) If I was to fit a cr250 tank (i think it looks good) what needs to be modified? I see the radiator mounts you made. You didn't appear to modify the actual radiators at all, right? What did you wind up doing for the gas tank mounts?

Hope you can take a minute to help me out. Thanks!
wolfy0067
Posts
487
Joined
8/14/2014
Location
Wernersville, PA US
11/4/2020 12:33pm
No tank available for sale, just added brackets to fit the origin mounts, no mods to the radiators,just lowering brackets, just can,t remember if I put 250 radiators on this build. I hated the bulky 500 tank, look at it you,lol figure it out. Not a big deal
MaxPower
Posts
2383
Joined
8/15/2006
Location
NJ US
11/7/2020 5:47pm
Its not until you see a 87 cr500 (or any of the early water cooled Honda 500s) do you realize how big the stock tank is. I don't know why they didn't seem so massive back in the day. Since motos are rarely more than 10 minutes long I might even consider trying a 125 tank if I had a 500. But I wouldn't have a 500 because I don't like riding them enough to deal with trying to start them. All your builds are super clean Wolfy.
1

Pit Row

  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image
  • Image

Post a reply to: Recent Purchase 87 CR500/CR250 tank install

The Latest

The Latest