Oversize 340 Cyclone Pistons

For Sale/Wanted topics - John Deere only!
Forum rules
Classified Posting Guidelines:
#1: JD snowmobile and related items only.
#2: Please do not post negative opinion comments about an item or PRICE. The only replies should be legitimate questions from interested parties.
Post Reply
Liquify
Posts: 17
Joined: Mon Jul 12, 2010 12:20 am
Location: Mn

Oversize 340 Cyclone Pistons

Post by Liquify »

WTB .040 oversize pistons for a '78 340 Cyclone. Need pistons for a vintage oval race project. Would appreciate any leads.
Thanks
Dick
User avatar
HoosierDeereMan
Posts: 1089
Joined: Thu Feb 01, 2007 1:00 am
Real Name: Troy Miley
Location: Oakland City, IN

Re: Oversize 340 Cyclone Pistons

Post by HoosierDeereMan »

Piston availability in over bore sizes for the 340 are usually .010" and .020" over. I don't know that I have ever seen .040" over pistons for a 340 even in aftermarket.

Are your cylinders worn that bad or are you looking to overbore to a max allowable CC for a race class?

Troy
'72 400
'73 400, (2)500's, 600
'74 295/S (restored) 2010 HOF poker run survivor.
'75 800, JDX8,
'75 340/S 2011 & 2012 Vintage Challenge finisher.
'76 (2)400's
'78 Liquifire 340,440
'79 Spitfire
"If it has Tits, Tires, or Tracks it's gonna cost you money!"
Liquify
Posts: 17
Joined: Mon Jul 12, 2010 12:20 am
Location: Mn

Re: Oversize 340 Cyclone Pistons

Post by Liquify »

We purchased several sets of .040 over aftermarket pistons for our 340 Cyclone last year. Thought we had enough for our needs, but, a bad batch of race fuel wiped out a set so we are looking for another set as a backup. The .040 over pistons bring us closer to the class cc limit.
Thanks
Post Reply