piston sleeve question

[Mickey Sergeant]

For my Berkshire, aluminum head cylinder, I am on my last bore.49.5,were there after market oversized pistons or sleeves that were available, I have porting on my cylinder,so don't want to start from scratch on another cylinder,

thanks

[firstturn]

I may still have some 100 sleeves. Let me know if you need one.

Ron Carbaugh

[brian kirby]

Have the cylinder nicasil plated at the size you are at now.

Brian

[Mickey Sergeant]

more info Brian. The clearance is getting out of spec,mainly at the skirt area. piston starting to slap. Don't know how that works

[Mickey Sergeant]

I'm assuming then that wiseco didn't make oversized pistons then?

[Kip Kern]

Wiseco made .080 over, 50mm I believe.  Contact Bore Tech, vintage Wiseco Pistons.  100cc pistons are a dime a dozen, was giving them away 10 years ago as no one wanted a 100cc.  Or contact Jake Fischer, he still has tons of parts.  Good luck!

[brian kirby]

An iron liner can be nicasil coated right over the iron. It can not be coated thick enough to go down to 49mm but you can stay at 49.5mm forever.

Brian

[t20sl]

Brian:
Who are you using for the nicasil?  Do you know how much it costs?
Thanks, Ted

[brian kirby]

I use Millennium Technologies. I have not had a cylinder plated in a while but it was about $200.

//www.millennium-tech.net

Brian

[Mickey Sergeant]

thanks for all the info, this is going to be a winter project,

[454MRW]

There is a Wiseco P8 50mm piston on eBay right now http://m.ebay.com/itm/WISECO-162P8-2MM-OVERBORE-PISTON-SACHS-PENTON-100-BERKSHIRE-NEW-OLD-STOCK-/252260723043?hash=item3abbe92963%3Ag%3AeoAAAOSwqrtWoQyX&_trkparms=pageci%253Aee9d1883-864f-11e6-9658-74dbd1808598%257Cparentrq%253A7651cb691570a548a1b60717fffdd2f1%257Ciid%253A17

Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1978-1979 MX-6 175 & 250 KTM's
1976-78 125-400 RM's & 79 PE250 Suzuki & 2012 DR650
2007 CR125R Honda
1977 MC250 Maico

[Mickey Sergeant]

thanks Michael, piston ordered

Mickey