HarleyTechTalk

Cut away of an S&S lifter shows the oil feed hole in the plunger at the top, so I doubt oil flow to pushrods would be effected throughout its travel.

This is their older lifter. Their new "Precision Tappets" changed the internal valving and have a flow metering disc at the bottom.

Quote from: HD Street Performance on July 17, 2020, 07:06:09 AM
This is their older lifter. Their new "Precision Tappets" changed the internal valving and have a flow metering disc at the bottom.

His image shows a metering disc.


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The new lifters have the disc on the bottom. Internal dimensions remain unchanged. AKA Crane design

Quote from: HD Street Performance on July 17, 2020, 07:23:31 AM
The new lifters have the disc on the bottom. Internal dimensions remain unchanged. AKA Crane design

How long since the new design was released?
If new design has a metering disc at the bottom, do you mean the check ball end and is there still a metering disc at the top or is it free flow now?

Got a cut away or pictures of the new design to share.

I have nothing, S&S tech told me the details. Sorry.

Here's an update.

Re-set lifters at .110" and seems to quiet things down, however still have the 2600-2800rpm rocker shaft knock. Not really concerned about that.

Didn't think it would make any difference from .130" to .110" but it did.
All I can hear is the top end valve train noises, a constant light clatter like a sewing machine if you know what I mean.

Listening from the air filter side cannot hear a thing, lifters are dead quiet.
From the primary side the valve train can be heard.

Quote from: Ohio HD on July 14, 2020, 08:02:15 AM
I don't know, I've been using Larry's lifters.

Call your S&S rep, I'm sure he can tell you. If they didn't change inside dimensions, then yes they will fit.

I pretty sure the new lifters from SS , are just one lifter now and no limiters . . I going with the lifters that Larry sells also with limiters . I was going to set them with a half turn of clearance . Is that ok thanks

I'd follow Larry's recommendations as he lays out here.


http://harleytechtalk.com/htt/index.php/topic,107431.0.html

Jim, Larry's adjustment description is exactly how we discussed it before.   

See attachment. Someone posted this some time ago and I have kept it around for reference.