rocker problems

8

88mustang92

Member

Mar 1, 2008

105

0

16

Mar 20, 2009

#1

• Mar 20, 2009

• #1

Sooo i have been having problems with my rockers coming loose even with poly locks, so with that being said i want to make sure im doing this properly.
Work on 1 cylinder at a time, make sure each p-rod is at its lowest point, tight the poly lock until the p-rod has no more up and down movement (zero lash?). the go half turn past that, then tighten the poly lock hex nut on top. Please clarify. BTW i have screw in head studs along with comp cams 1.7 magnum roller rockers.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,265

17,952

224

Massachusetts

Mar 20, 2009

#2

• Mar 20, 2009

• #2

Are you using a solid lifter?

You need use a solid lifter or modify a stock lifter. If you take the lifter apart, remove the spring, and flip the internal body upside down, you will make a solid lifter. This however ruins the lifter so don't do it with one you intend to use in the engine

 

8

88mustang92

Member

Mar 1, 2008

105

0

16

Mar 20, 2009

#3

• Mar 20, 2009

• #3

Mustang5L5 said:

Are you using a solid lifter?

You need use a solid lifter or modify a stock lifter. If you take the lifter apart, remove the spring, and flip the internal body upside down, you will make a solid lifter. This however ruins the lifter so don't do it with one you intend to use in the engine

Click to expand...

No, hydraulic roller, what i m doing is cranking the engine until i have oil pressure (with ig. coil discon) then they should be filled up, so i go with that, move the p-rod up and down and tighten the nut until the is no more up down movement of the p-rod, go half turn past that, then tighten the hex on the nut.

 

3

347HO

Member

Jan 13, 2008

462

2

16

Seattle

Mar 20, 2009

#4

• Mar 20, 2009

• #4

Remove the nut and look down in that area for indication of wear or chaffing.
I've heard, but not personally witnessed people having issues with their polylock/nuts riding on the rocker body and not fully seating down on it's lands.

 

8

88mustang92

Member

Mar 1, 2008

105

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16

Mar 22, 2009

#5

• Mar 22, 2009

• #5

Sorry it took me a while to get back i found out the problem, apparently while replacing the cheap lock nuts from comp cams, i 4got to tighten 1 poly lock on the nut, no big found it, put it back together n runs again now! yay, but anyway, got a small idle problem wen cold, it doesnt like to stay running unless its warm, thats iac problem isnt it? or is it bc of the cam?

 

B

BYRDPE

Founding Member

Nov 4, 1998

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Memphis,Tn.

Mar 22, 2009

#6

• Mar 22, 2009

• #6

88mustang92 said:

Sorry it took me a while to get back i found out the problem, apparently while replacing the cheap lock nuts from comp cams, i 4got to tighten 1 poly lock on the nut, no big found it, put it back together n runs again now! yay, but anyway, got a small idle problem wen cold, it doesnt like to stay running unless its warm, thats iac problem isnt it? or is it bc of the cam?

Click to expand...

Yeah...check and clean your IAC.
What rpm does your car idle at? The "B" likes ~ 900-1000 rpms.

 

8

88mustang92

Member

Mar 1, 2008

105

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16

Mar 23, 2009

#7

• Mar 23, 2009

• #7

BYRDPE said:

Yeah...check and clean your IAC.
What rpm does your car idle at? The "B" likes ~ 900-1000 rpms.

Click to expand...

im gonna adjust it mechanically to 900 right now its about 750 - 800