Jump to content


Photo
- - - - -

998 Bore Clearence


  • Please log in to reply
19 replies to this topic

#16 Moke Spider

Moke Spider

    Crazy About Mini's

  • TMF Team
  • PipPipPipPipPipPipPipPipPipPip
  • 9,227 posts
  • Location: NSW
  • Local Club: South Australian Moke Club

Posted 18 September 2019 - 10:19 AM

The Bore will not wear evenly and so is no longer round.

 

Honing them won't correct this.

 

New Rings won't seal to a bore that's not round.

 

Bore it the next over size and fit new pistons.



#17 gaspen

gaspen

    Stage One Kit Fitted

  • TMF+ Member
  • PipPipPip
  • 97 posts
  • Location: Budapest

Posted 20 September 2019 - 09:00 PM

The Bore will not wear evenly and so is no longer round.

 

Honing them won't correct this.

 

New Rings won't seal to a bore that's not round.

 

Bore it the next over size and fit new pistons.

 

In case of re-boring to +20, may I fit flat-top pistons ? For example ADU3490-20 by MiniSpares

 

Head is a 2A609E



#18 DeadSquare

DeadSquare

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 1,491 posts
  • Location: Herefordshire
  • Local Club: Herefordshire Motor Club

Posted 20 September 2019 - 09:24 PM

The short answer is "YES", but use the best fuel and make sure the ignition is set correctly.



#19 Moke Spider

Moke Spider

    Crazy About Mini's

  • TMF Team
  • PipPipPipPipPipPipPipPipPipPip
  • 9,227 posts
  • Location: NSW
  • Local Club: South Australian Moke Club

Posted 20 September 2019 - 10:41 PM

 

The Bore will not wear evenly and so is no longer round.

 

Honing them won't correct this.

 

New Rings won't seal to a bore that's not round.

 

Bore it the next over size and fit new pistons.

 

In case of re-boring to +20, may I fit flat-top pistons ? For example ADU3490-20 by MiniSpares

 

Head is a 2A609E

 

 

 

The short answer is "YES", but use the best fuel and make sure the ignition is set correctly.

 

What he said ^



#20 gaspen

gaspen

    Stage One Kit Fitted

  • TMF+ Member
  • PipPipPip
  • 97 posts
  • Location: Budapest

Posted 21 September 2019 - 11:01 AM

I suppose I should fit electronic ignition also.

 

What are the pros/cons of flat pistons if there is any ?






1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users

Mini Spares