valve clearance - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland Tech
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 03-27-2006, 03:42   #1 (permalink)
Registered User
 
krusty's Avatar
 
Join Date: Aug 2005
Posts: 163
valve clearance

i need help setting my valve clearance , ive bleed down the lifters and im getting around 6.5mm gap , what should the gap be , and how can i adjust the clearance , do i need different push rods or can i shimm the pedestal to get the desired clearance ,,

im using standard rocker arms ,
the heads and block have been shaved too
the push rods im using are crow cams 8.400"

any help appreciated
krusty is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-27-2006, 03:47   #2 (permalink)
GEARBOX WRECKER
 
GT-P 738's Avatar
 
Join Date: Oct 2003
Location: Pretty Quick GT-P
Age: 45
Posts: 475
Re: valve clearance

Quote:
Originally Posted by krusty
i need help setting my valve clearance , ive bleed down the lifters and im getting around 6.5mm gap , what should the gap be , and how can i adjust the clearance , do i need different push rods or can i shimm the pedestal to get the desired clearance ,,

im using standard rocker arms ,
the heads and block have been shaved too
the push rods im using are crow cams 8.400"

any help appreciated
What do you mean you need help setting valve clearances,if you are using hydraulic lifters then it will self adjust,on the other hand if you are using solid lifters then have you got an adjuster on the rocker.

The 6.5 mm you talk about is just the amount of internal travel the lifter has.

More info required.
__________________
GT-P Blood Orange Manual
13.17@106.38 271.9 RWKW'S Tuned by Simon from
Xtreme Ford Tuning

"Hate it or love it,the underdog's on top"
Standard Headers and Rubber & More to Come.
04 Focus Zetec R
YELLOW GLOW XB GT
GT-P 738 is offline   Reply With Quote
Old 03-27-2006, 04:05   #3 (permalink)
Registered User
 
xdclevo's Avatar
 
Join Date: Mar 2004
Location: Cairns
Posts: 1,946
Re: valve clearance

Don't measure the gap, but rather how far it presses or preloads the plunger in the lifter after the rocker is bolted on. Just bolt the rocker down when the lobe is on the base circle, then the pushrod should push into the lifter between 20 and 60thou or 1/2 to 1.5mm. Don't worry how much play it has afterwards, but how much "preload" it has into the lifter. If you have between 20 & 60 thou preload, all is good and it will sort itself from there.
xdclevo is offline   Reply With Quote
Old 03-27-2006, 04:42   #4 (permalink)
Registered User
 
krusty's Avatar
 
Join Date: Aug 2005
Posts: 163
Re: valve clearance

im actually having a bit of air blowing back through the carb , no its not back firing , in the factory manual it says that when you shave the heads or regrind the valves that an adjustment has to be made or the valves can stay open
krusty is offline   Reply With Quote
Old 03-27-2006, 05:07   #5 (permalink)
Registered User
 
xdclevo's Avatar
 
Join Date: Mar 2004
Location: Cairns
Posts: 1,946
Re: valve clearance

Quote:
Originally Posted by krusty
in the factory manual it says that when you shave the heads or regrind the valves that an adjustment has to be made or the valves can stay open
Thats why you check the PRELOAD and make sure it is between the allowed specs, then it can't be wrong. What is your preload into the lifter??
xdclevo is offline   Reply With Quote
Old 03-27-2006, 06:10   #6 (permalink)
Registered User
 
krusty's Avatar
 
Join Date: Aug 2005
Posts: 163
Re: valve clearance

sorry about the dumbass questions , but how do you check the preload and what actually is preload
krusty is offline   Reply With Quote
Old 03-27-2006, 13:42   #7 (permalink)
Registered User
 
xdclevo's Avatar
 
Join Date: Mar 2004
Location: Cairns
Posts: 1,946
Re: valve clearance

Quote:
Originally Posted by krusty
sorry about the dumbass questions , but how do you check the preload and what actually is preload
Read post #3 as it gives a basic idea.
xdclevo is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 03:30.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.