JOHNSON limited travel lifter question
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Teching In
Joined: Jul 2011
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JOHNSON limited travel lifter question how much preload do i run on this lifter? part number 2116LSR. I sincerely hope that they do a better job of making a lifter than they do answering either phone number that they have......because the customer service sucks *****.
On The Tree
Joined: May 2011
Posts: 157
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Lol...well there's a 1st for everything. Typically we do very well on the customer service side of things. Can't win them all I guess. Sorry nobody answered when you called....
Anyway, I responded to your email. Every lifter we make is designed to operate at the same preload of .035". The margin for error changes depending on total travel and intended use. For the 2116's stay around +/- .010".
Anyway, I responded to your email. Every lifter we make is designed to operate at the same preload of .035". The margin for error changes depending on total travel and intended use. For the 2116's stay around +/- .010".
Could they be run as low as .015? My zero lash on intake was 7.450. Exhaust was 7.460.
I elected to run 7.500 pushrods giving me .050 and .040 preload, because I didn't want the exhaust to be so tight on preload (I didn't measure all 16 valves, so some could have been even tighter).
Is .050" too much? Seems I was caught in between but I only had 3 sets of pushrods on hand in .025" increments.
I elected to run 7.500 pushrods giving me .050 and .040 preload, because I didn't want the exhaust to be so tight on preload (I didn't measure all 16 valves, so some could have been even tighter).
Is .050" too much? Seems I was caught in between but I only had 3 sets of pushrods on hand in .025" increments.
On The Tree
Joined: May 2011
Posts: 157
Likes: 2
Could they be run as low as .015? My zero lash on intake was 7.450. Exhaust was 7.460.
I elected to run 7.500 pushrods giving me .050 and .040 preload, because I didn't want the exhaust to be so tight on preload (I didn't measure all 16 valves, so some could have been even tighter).
Is .050" too much? Seems I was caught in between but I only had 3 sets of pushrods on hand in .025" increments.
I elected to run 7.500 pushrods giving me .050 and .040 preload, because I didn't want the exhaust to be so tight on preload (I didn't measure all 16 valves, so some could have been even tighter).
Is .050" too much? Seems I was caught in between but I only had 3 sets of pushrods on hand in .025" increments.
I'll respond with a little more detail tomorrow, when I'm not using my cell phone. Short answer...running @ .040-.050" preload will not hurt anything! The .015" preload question takes a little more explanation, as it isn't necessarily a "bad" thing either (I'd probably elect to go with .018" which is tough with .025" increments). There are some trade offs, though.
I'll respond with a little more detail tomorrow, when I'm not using my cell phone. Short answer...running @ .040-.050" preload will not hurt anything! The .015" preload question takes a little more explanation, as it isn't necessarily a "bad" thing either (I'd probably elect to go with .018" which is tough with .025" increments). There are some trade offs, though.
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Me too. Im pretty much in the same boat at Mchicia1 with my 2116lsr's. my zero lash is 7.500 intake and 7.510 exhaust. So I went with 7.550 since that's what my local speed shop had in stock.
But if I cut down to the 7.525 my preload would by .025 and .015, So Im curious about the trade off's too. Is there a greater chance of valve float running .050 and .040 preload?
Is there a chance I could possibly be hanging valves open with this preload? I know my ptv is prob. getting close since Im running milled heads.
Am I leaving any power on the table running alittle more preload? Is my little heavier preload wearing out my 2116 lsr lifters quicker?
Thanks for any info.
But if I cut down to the 7.525 my preload would by .025 and .015, So Im curious about the trade off's too. Is there a greater chance of valve float running .050 and .040 preload?
Is there a chance I could possibly be hanging valves open with this preload? I know my ptv is prob. getting close since Im running milled heads.
Am I leaving any power on the table running alittle more preload? Is my little heavier preload wearing out my 2116 lsr lifters quicker?
Thanks for any info.
Last edited by 06blackGTO; Feb 24, 2016 at 10:21 AM.
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Verdad Gallardo Me too. Im pretty much in the same boat at Mchicia1 with my 2116lsr's. my zero lash is 7.500 intake and 7.510 exhaust. So I went with 7.550 since that's what my local speed shop had in stock.
But if I cut down to the 7.525 my preload would by .025 and .015, So Im curious about the trade off's too. Is there a greater chance of valve float running .050 and .040 preload?
Is there a chance I could possibly hanging valves open with this preload? I know my ptv is prob. getting close since Im running milled heads.
Am I leaving any power on the table running alittle more preload? Is my little heavier preload wearing out my 2116 lsr lifters quicker?
Thanks for any info.
But if I cut down to the 7.525 my preload would by .025 and .015, So Im curious about the trade off's too. Is there a greater chance of valve float running .050 and .040 preload?
Is there a chance I could possibly hanging valves open with this preload? I know my ptv is prob. getting close since Im running milled heads.
Am I leaving any power on the table running alittle more preload? Is my little heavier preload wearing out my 2116 lsr lifters quicker?
Thanks for any info.
I'll respond with a little more detail tomorrow, when I'm not using my cell phone. Short answer...running @ .040-.050" preload will not hurt anything! The .015" preload question takes a little more explanation, as it isn't necessarily a "bad" thing either (I'd probably elect to go with .018" which is tough with .025" increments). There are some trade offs, though.
These from my thread about pushrod and getting it accurate with limited travel lifters
https://ls1tech.com/forums/generatio...l#post19161232
https://ls1tech.com/forums/generatio...l#post19162511
https://ls1tech.com/forums/generatio...l#post19162525
https://ls1tech.com/forums/generatio...l#post19161232
https://ls1tech.com/forums/generatio...l#post19162511
https://ls1tech.com/forums/generatio...l#post19162525
Never got to installing the shorter rods since my dial indicator needs some repairs. The car has been running great with the 7.500 ones, so it may be a while, sorry. I got a bit burnt out from changing bad seals for the 3rd time, so VCs staying on for a while 
.
If anyone is interested in the 5/16 7.475" pushrods, $60 shipped.
.If anyone is interested in the 5/16 7.475" pushrods, $60 shipped.
So I have the short travel lifters. They only have .058" of travel. I have my cold preload set to an average of .034" that will grow to about .028" hot. You want to try to be in the middle of the preload range for the lifter. So Around .045" hot with yours would be fine.
I'd be interested to see what the lighter preload does. I suspect it aids in top-end stability to counteract oil aeration and pump-up issues.
I'd be interested to see what the lighter preload does. I suspect it aids in top-end stability to counteract oil aeration and pump-up issues.
So I want to bump this. I swapped cams... and I had an extra set of Mantons laying around.
I had .034" avg with 7.557" pushrods before... and now it looks like I'm around .015" avg with 7.572s I had... so instead of buying a 3rd set of Mantons, I was wondering what the trade off was for the .015" preload.
I had .034" avg with 7.557" pushrods before... and now it looks like I'm around .015" avg with 7.572s I had... so instead of buying a 3rd set of Mantons, I was wondering what the trade off was for the .015" preload.