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Measuring for pushrod length. #2246897
02/03/17 11:36 PM
02/03/17 11:36 PM
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Mt Morris Michigan
mopar dave Offline OP
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I have the new harland sharp rockers for victor head and will be measuring for pushrod length tomorrow. My question is do i need to torque head to spec or can i just snug it to 30ftlb with the marine gaskets. I still need to check piston to valve once i get the new p rods.

Re: Measuring for pushrod length. [Re: mopar dave] #2246903
02/03/17 11:44 PM
02/03/17 11:44 PM
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Ive always used a old gasket and snugged it but either way ya go, what your maybe .010 difference.

Id watch more for the pushrod travel and getting the length correct for the best geometry.

Do you have the dummy adjustable to go by?

Last edited by EV2Bird; 02/03/17 11:46 PM.
Re: Measuring for pushrod length. [Re: mopar dave] #2246905
02/03/17 11:46 PM
02/03/17 11:46 PM

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Dave just barely snug about three bolts with head gasket no big deal--with Harlands you will notice that the old two thread rule may have the adjusters a little deep--I would say one thread showing--The SECRET is do not try and figure the BS effective length--Just do a very simple overall length--the diff in cup depth between makes is negligible Smith Bros and an overall length is the key
You can screw up maybe .025 and still be aok but use a height gauge or a big caliper not a tape measure and just round it off don't order some crazy 9.316 stuff OK?
Also check first many Harland applications need lash caps to help ( not correct) geometry A Sharpie is your friend here--Sharpie up the tip or lash cap and then just slide the rocker across the tip several times-- adjust pushrod length to keep it as near center as possible - this is done with valve closed at rest never mind cycling it as your adjustable pushrod will just collapse under the spring pressure-while this is not perfect to make an A on a test it is for sure good enough to run the S%#@ out of any Mopar Now it is best to jimmy up some kind of pushrod near the correct length and check geometry but if it is whacked what ya gonna do--shims? lash caps? Let us know if you need more help

Re: Measuring for pushrod length. [Re: ] #2246926
02/04/17 12:10 AM
02/04/17 12:10 AM
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Mt Morris Michigan
mopar dave Offline OP
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They call for 0-2 threads out the bottom to get good oil flow to the fulcrum. Ordered these with cup adjusters. They are suppose to be a bit shorter than the rockers for the standard victor. I have the max wedge port. .725 offset as well. I will see where they set with valve closed. Wont know much more til i get some p rods to cycle.

Re: Measuring for pushrod length. [Re: mopar dave] #2246938
02/04/17 12:32 AM
02/04/17 12:32 AM
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Originally Posted By mopar dave
I have the new harland sharp rockers for victor head and will be measuring for pushrod length tomorrow. My question is do i need to torque head to spec or can i just snug it to 30ftlb with the marine gaskets. I still need to check piston to valve once i get the new p rods.
Snugs ok. A used gasket is better. After I get it where I want it with my adjustable pushrod ( using checking springs), I just send my checker in with my pushrod order and have them ( whom ever you use)send it back with the new pushrods. "I need 8 (or 16) this length".


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Re: Measuring for pushrod length. [Re: Crizila] #2246944
02/04/17 12:47 AM
02/04/17 12:47 AM
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Mt Morris Michigan
mopar dave Offline OP
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I dont have any old gaskets. My first BB build. The rockers are 1.6 and 1.5. Not sure that will require 2 differnt lenths. I would think only the cam would dictate that.

Re: Measuring for pushrod length. [Re: mopar dave] #2247044
02/04/17 03:51 AM
02/04/17 03:51 AM
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Bend,OR USA
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Are your heads Victors or the Super Victor M.W. port heads?
The S.V. M.W. use a different set of H.S. rockers than the Victors do shruggy I found that out the hard way whiney I ordered the ones for M.W. S.V though Summit and ended up with the regular Victor rocker set up, Summit screwed up that up runaway down
Harland Sharp took care of it for me no charge either way boogie up
Are you using offset intake roller lifters ? If so have 8 made for each of the intakes and 8 for the exhaust rockers up twocents
IHTHs thumbs

Last edited by Cab_Burge; 02/04/17 03:51 AM.

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Re: Measuring for pushrod length. [Re: mopar dave] #2247142
02/04/17 01:05 PM
02/04/17 01:05 PM
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Clanton Offline
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Be clear of how you measure inside the cup with a ball bearing or other


GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: Measuring for pushrod length. [Re: Cab_Burge] #2247146
02/04/17 01:14 PM
02/04/17 01:14 PM
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Mt Morris Michigan
mopar dave Offline OP
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not sure, but I have the max wedge port. would that be the super victor? I hope so, because that's how the rockers were ordered. they are suppose to be a bit shorter than the standard victor.

Re: Measuring for pushrod length. [Re: Clanton] #2247147
02/04/17 01:14 PM
02/04/17 01:14 PM
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mopar dave Offline OP
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I'm using ball ball pushrods.

Re: Measuring for pushrod length. [Re: mopar dave] #2247643
02/05/17 12:04 PM
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mopar dave Offline OP
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Not sure why im getting two differnt measures but intake pushrod is 9.250 and ex. Is 9.200. Think ill just order all 9.225. Looks like i can only fit 5/16 pushrod in there.

Re: Measuring for pushrod length. [Re: mopar dave] #2247675
02/05/17 12:53 PM
02/05/17 12:53 PM
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Before you order push rods check the ones at stewardperformance.com


stewardperformance.com
Re: Measuring for pushrod length. [Re: gtea1901] #2247687
02/05/17 01:22 PM
02/05/17 01:22 PM
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Mt Morris Michigan
mopar dave Offline OP
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I will do that. Are they better priced or better quality?

Re: Measuring for pushrod length. [Re: mopar dave] #2247691
02/05/17 01:30 PM
02/05/17 01:30 PM
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RapidRobert Offline
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with some light springs & the adj (checking) pushrod I would check EVERYTHING: VP clearance/pushrod angle/threads showing/cup to rocker clearance/coil bind height of the regular springs/retainer to seal/WIPE PATTERN/rocker to retainer, all those clearances.


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Re: Measuring for pushrod length. [Re: mopar dave] #2247693
02/05/17 01:33 PM
02/05/17 01:33 PM
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New York
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The valve at zero lift and full lift should rest in the same place, close to the rocker (not centered). Half lift should pass across the stem tip and reach toward the far side.
The 25% and 75% lift points should be centered, but even this is less important than having the smallest possible sweep path.


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Re: Measuring for pushrod length. [Re: polyspheric] #2247716
02/05/17 02:08 PM
02/05/17 02:08 PM
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I think it was Andy, welded a dial indicator sideways on a retainer & used it to measure sweep. trick! I'm gonna make one.


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Re: Measuring for pushrod length. [Re: mopar dave] #2247725
02/05/17 02:20 PM
02/05/17 02:20 PM
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Clanton Offline
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Originally Posted By mopar dave
Not sure why im getting two differnt measures but intake pushrod is 9.250 and ex. Is 9.200. Think ill just order all 9.225. Looks like i can only fit 5/16 pushrod in there.
Shim the rockers side good.010 and I think you can run 3/8 with a good side wall thickness.Mine run close to the head but never touched but are std port.


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http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: Measuring for pushrod length. [Re: Clanton] #2247737
02/05/17 02:41 PM
02/05/17 02:41 PM
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Jeremiah Offline
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While the OAL of the valves is equal the margin on the exhaust has a little more area between the margin and the face. You should see this when checking valve spring installed height as well. I'm 99% sure that is why you are seeing a variation from intake to exhaust.

Re: Measuring for pushrod length. [Re: Clanton] #2247751
02/05/17 02:59 PM
02/05/17 02:59 PM
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Mt Morris Michigan
mopar dave Offline OP
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Not running much spring pressure with the solid flat tappet. Didnt think it would hurt to use a heavy wall 5/16 pushrod and skip all the clearancing issues. Been there done that. Heres where the rockers set on the stem.

20170204_232609.jpg
Re: Measuring for pushrod length. [Re: Jeremiah] #2247927
02/05/17 06:35 PM
02/05/17 06:35 PM
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your probably right, didn't think about that.

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