Valve sweep position not changing ??

[5.0calypso93lx]

Ricky came over and gave me a hand on checking my PTV as well as pushrod length tonight.

One issue we did run into was the inability to move the valve pattern closer to the center of the valve. The sweep looks great and is very thin, but it seems like it's too far out on the valve:

http://i446.photobucket.com/albums/qq188/bad306lx/424840_10150615509121847_736166846_9701652_3373612 05_n.jpg
http://i446.photobucket.com/albums/qq188/bad306lx/420103_10150615508716847_736166846_9701650_1571039 194_n.jpg

We tried a 6.250 pushrod (rocker arm bolt would tighten before push rod would contact the rocker), 6.60 pushrod which put the pattern where you see it in the pics above and tried just about every length in between with an adjustable pushrod. No changes. Yes we did use a stock lifter made "solid" to make all measurements.

We then tried shimming the pedestal up with 1 shim at first, then added a second. Still no changes.

Any ideas? Anyone have a 1.7 pedestal mount rocker I can borrow to eliminate my rockers?

[redfirepearlgt]

This was a good video I thought. Maybe help out in case you are overlooking something. Just trying to help. I want to see that green foxbody running. good luck.

http://www.youtube.com/watch?v=z8NW0R0kDiY

[Gearhead]

James,

Are those the Steeda rockers ?? If they are, thinking back, I think for some reason the rocker stand on those is taller than the normal pedestal rockers, which I think would move the pattern farther out on the valve tip. Let me check tonight when I get home, I'm pretty sure I have a set of the shorter rocker stands. If I don't have a set, I will refund your money or buy you a set of the shorter stands.

I'm going by memory on this from years ago, so I could be wrong....

6.60 seems like a way too long pushrod, should be in the 6.25-6.40 range I would think.

Edit: Looking at the pics again, that stand looks too tall, I think the normal ones are only about 2/3's that height.

[5.0calypso93lx]

Scott, yes these are the Steeda rockers. I didn't even know they made different size stands lol. I've got a set of 6.250 pushrods and the bolt holding the rocker down would tighten long before the rocker would touch the pushrod. Let me know if you find anything, I'd appreciate it.

[5.0calypso93lx]

Now that I see the pic of the crane cams stands better, I really don't think I see that much of a difference between those and what I have now. I've got the part number for the crane stands and I'm going to give them a call later today and see if they can't tell me the height of their stands. I'll compare that to the ones I have.

It has me thinking now, if the stands I have are too tall wouldn't that also affect how far the valve could potentially be opened? If that's true, that might explain why we got a strangely huge number for the amount of clearance I have with this cam and these rockers even without a head gasket. We measured .106 and .187 without a head gasket. Granted the head wasn't fully torqued down.

[bobtsgt]

If the rocker is too tall then yes you will increase your PTV clearance. I say your on the right track with the height problem. Maybe they will exchange them out if they aren't used. Or worse case get those cut down on a lathe to the proper height and file down the groove til it matches haha

[Walter]

Now that I see the pic of the crane cams stands better, I really don't think I see that much of a difference between those and what I have now. I've got the part number for the crane stands and I'm going to give them a call later today and see if they can't tell me the height of their stands. I'll compare that to the ones I have.

It has me thinking now, if the stands I have are too tall wouldn't that also affect how far the valve could potentially be opened? If that's true, that might explain why we got a strangely huge number for the amount of clearance I have with this cam and these rockers even without a head gasket. We measured .106 and .187 without a head gasket. Granted the head wasn't fully torqued down.

Why are you measuring for pushrod length with no head gasket anyhow???

[bkstang95]

Easy fix...just part it out! Problem solved!

[Walter]

Easy fix...just part it out! Problem solved!

:):popcorn:

[5.0calypso93lx]

Why are you measuring for pushrod length with no head gasket anyhow???

Don't have a junk 9333 laying around and I know what the compressed gasket thickness is.

[Walter]

Alrighty then.

[Steves LX]

You can check it without the head gasket. Just make sure you add the compressed thickness difference. Don't get so tied up on the location of the mark. You want the mark to be as tight as possible. Obviously you dont want it to be to far back or forward but it doesn't have to be centered.

[5.0calypso93lx]

You can check it without the head gasket. Just make sure you add the compressed thickness difference. Don't get so tied up on the location of the mark. You want the mark to be as tight as possible. Obviously you dont want it to be to far back or forward but it doesn't have to be centered.

I agree with you, but with all the different pushrod lengths and shimming the rocker up with no changes whatsoever does have me concerned. The sweep location is really far on the outside of the valve too. I think I may pick up some new rockers.

[Stangman]

James, I have some Ford Racing/Crane Cobra rockers you could borrow to check.... lmk

[5.0calypso93lx]

James, I have some Ford Racing/Crane Cobra rockers you could borrow to check.... lmk

1.7 pedestal mounts?

[Stangman]

Yep, not stud mounts, and yes 1.7's

[5.0calypso93lx]

Yep, not stud mounts, and yes 1.7's

Jesse, can you do me a huge favor and measure the height of the rocker stands from the bottom where they touch that crossover bracket to the top where the bottom of the rocker rests?

[Stangman]

That small round pedistal?

[5.0calypso93lx]

That small round pedistal?

These thingys LOL:

http://www.summitracing.com/parts/CRN-36758PS-16

[Gearhead]

James,

I have a set of the pedestal rocker stands that measure 5/8" from the bottom to the top, total overall length.

I can measure the distance from the base to the bottom where the rocker rests when I get home.

Is the overall length on yours longer than 5/8" ??

[Gearhead]

measure the height of the rocker stands from the bottom where they touch that crossover bracket to the top where the bottom of the rocker rests?

I came up with about 1/2" for the ones I have, let me know if you want 'em.
Or if you want a refund on the rockers....sorry about the confusion.

[5.0calypso93lx]

I came up with about 1/2" for the ones I have, let me know if you want 'em.
Or if you want a refund on the rockers....sorry about the confusion.

I'm guessing that's the problem then! :) I measured the ones I have now and they're about .750".

[Gearhead]

Just curious if you got everything worked out ??

[5.0calypso93lx]

Just curious if you got everything worked out ??

Scott, everything went great today except for that I think 4 of those crossover pieces that the stands go inside are missing. Would you mind checking to see if you don't have those laying around somewhere LOL?

I did check pushrod length for the final time tonight and my favorite length on the adjustable pushrod is 6.375". I'm not even sure if there is a pushrod out there in that length. If they don't I'll probably go with a 6.350". Here's what the valve looks like with the 6.375":

http://i446.photobucket.com/albums/qq188/bad306lx/538103_10150628550306847_736166846_9748119_3715401 15_n.jpg

[Mista Bone]

Question, have the heads been milled?

I know I had fits (over 20 years ago!) when a valve job was done the heads were decked .020" or so. Thats no fun on stock valve train!

[5.0calypso93lx]

Question, have the heads been milled?

I know I had fits (over 20 years ago!) when a valve job was done the heads were decked .020" or so. Thats no fun on stock valve train!

Don't believe they have. Scott let me know that they had had a little bit taken off just to get them cleaned up. Either way, all looks to be good now.

[TurboNG]

So did you keep them and get it figured out then?

[Gearhead]

Scott, everything went great today except for that I think 4 of those crossover pieces that the stands go inside are missing. Would you mind checking to see if you don't have those laying around somewhere LOL?

Let me check tonight, I'll let ya know.....