Unofficial Royal Enfield Community Forum

Royal Enfield Motorcycles => Bullet Electra & AVL => Topic started by: mattjohnson207 on January 27, 2014, 10:49:28 pm

Title: AVL piston ring gap specs
Post by: mattjohnson207 on January 27, 2014, 10:49:28 pm

Installing my new piston, rings, newly honed barrel...couldn't find specs for ring gap
        First timer, tips gladly accepted.   Planning on heating the piston with a hot rag to . Just watched an excellent vid on YouTube  for the 350 re,  guess this is going to take longer than I thought
       
         
         Thanks, Matt in Glendale
          09 AVL
       Edit...used IB specs, .018".   Went together fast, even having to take it apart three times
    Now, awaiting the mailman for a valve guide!

Title: Re: AVL piston ring gap specs
Post by: Adrian on February 05, 2014, 01:36:14 am

Matt,

sorry, this is a bit late for your reassembly, but this is what I found in the service manual, piston ring end gap, compression rings min 0.25mm, max 0.45mm, oil ring min 0.20, max 0.70mm.

In my BSA days we called it 0.010"!

Regards,

A.

Title: Re: AVL piston ring gap specs
Post by: mattjohnson207 on February 05, 2014, 04:35:44 pm

Great! Good to know.  Sent the head out for a three angle valve job...but the machinist is on vacation up in Montana
     Matt