javier1730

iTrader: (16)

hey guys,, i came across a good deal on one of lifters set, part number Comp #15956-16, and i just want to get some feedback from those using them...i tried a search but didnt find much on them, most people are using morel,..now how's the quality on these lifters ,and how do they perform...what are the advantage of going this route other than being able to spin the motor at higher RPM's. thanks in advance for any input.

Rickenbackerman

iTrader: (1)

I'm running them as well as a handful of others. They're a relatively new concept (the short travel deal), but I think more and more people will start using them as time goes on. FWIW I did have one collapse on the dyno, but I installed a new pair and everything seems to be fine so far. See my build thread here:

https://ls1tech.com/forums/generatio...stly-done.html

javier1730

iTrader: (16)

Im going with a mamofied top end, like you, and I guess ill give these lifters a try and see how it plays out....nice numbers by way the and it sucks to hear about the collapse lifter.

javier1730

iTrader: (16)

hey man, thanks for the input...what did you set your preload to on those lifters?, and i read in your thread that you use 3 different push rod length? will i need to buy 3 sets of push rods as well? thanks

SweetS10V8

iTrader: (4)

There is only about .050" of total travel in these lifters. I set them in the .020-.025" range

Rickenbackerman

iTrader: (1)

If you're running Mamofied heads like me, then your installed valve tip heights will vary and you'll need custom length pushrods, too. You won't know how many different lengths you'll need 'till you measure.

I'm running mine at .030" per Tony's instruction. I think he told me the total travel is .060" FYI.

EDIT: I remembered I'm actually running .040" preload. Due to thermal expansion of the motor, that translates to about .030" hot. Right in the middle of the range.

therabidweasel

iTrader: (5)

I will add that when you install them dry they should go in AND back out smoothly, with no hanging and no pressure needed other than gravity. Make sure they will go all the way down on the base circle.

javier1730

iTrader: (16)

did yours have a fitment problem?, i know these are coated and they are supposed to be like .002" thicker....also before install should i leave them dipped in oil over night?

therabidweasel

iTrader: (5)

before you soak them you should dry fit them for sure. and I recommend that you dry fit every single one in every single cylinder. I did have issues, but rickenbackerman has shown they are solvable. I think both of our motors are on the tight side.