Jump to content


Photo
- - - - -

Tappets... What clearance??????


  • Please log in to reply
3 replies to this topic

#1 biggav

biggav

    Crazy About Mini's

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 5,830 posts
  • Local Club: South Central

Posted 25 October 2006 - 01:10 PM

What settings will i need for a 1380 stage 4 with 286 cam and standard rockers???

#2 The Matt

The Matt

    You don't escape that easily.....

  • Admin
  • PipPipPipPipPipPipPipPipPipPipPip
  • 17,229 posts
  • Name: Matt
  • Location: Overton, North Wales
  • Local Club: Welsh Border Minis

Posted 25 October 2006 - 01:29 PM

Looking here Kent recommend 0.40mm valve clearance for a Megadyne 286

#3 biggav

biggav

    Crazy About Mini's

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 5,830 posts
  • Local Club: South Central

Posted 25 October 2006 - 01:34 PM

Looking here Kent recommend 0.40mm valve clearance for a Megadyne 286



DOH!!! i meant 296!!!!!

#4 The Matt

The Matt

    You don't escape that easily.....

  • Admin
  • PipPipPipPipPipPipPipPipPipPipPip
  • 17,229 posts
  • Name: Matt
  • Location: Overton, North Wales
  • Local Club: Welsh Border Minis

Posted 25 October 2006 - 01:51 PM

Same clearance. If you look on their site, search for product, by car type etc.

It gives you a list of cams and components, click on 296 and it gives you the spec and also recommended valve clearances. Most cam manufacturers will list the recommended valve clearance for their cam either on the paperwork with the cam, or on their website I'd think.

That will assume standard rockers, for higher lift rockers you need to divide the Recommended Valve Clearance by the standard ratio (which I think is 1.23) then times by your rocker ratio. Or, to make it easier

for 1.3:1's = RVC x 1.057

for 1.5:1's = RVC x 1.219

for 1.6:1's = RVC x 1.3

for 1.7:1's = RVC x 1.38

Could do with someone else checking that, as it is only my take on it! :genius:

EDIT: by the way 0.40mm is 0.0157" (16 thou). :dontgetit:

Edited by mini mad me, 25 October 2006 - 01:54 PM.





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users