HELP! XR8 Roller Rockers - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

EDXR8 · 11-24-2001, 03:12

I have just installed Yella Terra 1.73 ratio roller rockers in my ED XR8. Now it dosen't want to idle and is very rough on acceleration. It seems like it is running on 6cy not 8. Before I dismantle the engine again, I was wondering if anyone here has had any probs with this installation. Also could this be the computer trying to relearn and how long does it usually take. Any help would be great.

Aussie Pete · 11-24-2001, 15:59

You need to make sure you preloaded the lifters correctly during assembly. Also, the rocker covers on the engines (standard) will foul 1.7+ rockers and require modification of the oil baffle. Finally, have you worked out what your overlap is in the valve timing now you have gone 1.73 ratio?

ebxr8240 · 11-24-2001, 16:19

I take it you have checked pistin to valve clarence ? Need atleast 80 thou.

Go www.corral.net / windsor they go in great depth on this...May have to go back a few pages...

Aussie Pete · 11-24-2001, 16:31

Quote:

Originally posted by ebxr8240
I take it you have checked pistin to valve clarence ? Need atleast 80 thou.

Go www.corral.net / windsor they go in great depth on this...May have to go back a few pages...

Yeah! Forgot that one. I hope we're not seeing the damage???? :dead:

EDXR8 · 11-25-2001, 03:37

Thanks for the help guy's. I found out what it was. One of the pushrods didn't want to stay where it should :) Now its running much better.

XR8chic · 11-25-2001, 15:34

Hi,

just curious.... which rockers did you get (I got Yella Terra ST2027)

:s6: :s6: :s6:

EDXR8 · 11-25-2001, 20:25

Yeah I got the ST2027's as well.

ebxr8240 · 11-26-2001, 20:24

Phew That made you feel better ha? Sorry to scare ya:
Rockers etc can make a whole heap of noise on first start up until they pump up. Glad to hear it was a pushrod not seated right..

EDxr8EBgt · 11-26-2001, 22:10

You might have just adjusted them incorrectly? The computer would have learnt by now. Check ignition system i.e firing order lead set.
Set idle as per manufacturers spec.

A set of 1.7:1 rockers would not upset the eecIV on there own.

XR8chic · 11-28-2001, 14:59

Quote:

Originally posted by Aussie Pete
You need to make sure you preloaded the lifters correctly during assembly. Also, the rocker covers on the engines (standard) will foul 1.7+ rockers and require modification of the oil baffle. Finally, have you worked out what your overlap is in the valve timing now you have gone 1.73 ratio?

Hi,

I am running standard rocker cover, with the 1.72 ratio rockers and did not have to remove the baffle at all... They fit!!!

[yawn] I am going back to bed now... tooo early in morning...