Isky red zone lifters

[masracingtd1167]

Matt what do you think about the new Isky red zone lifters ? I broke a lifter last year a Jessel but they were very old . I am going to replace all of my lifters this year and I like the idea of no needle bearings . Thanks  Bill Masiello

[Blind Mule]

Bill you gonna run T/D this year?

    Randy!

[Frontenginedragsters]

Bill:
 Isky makes a very good product.
I have not used any of the new lifters without needle bearings yet.
For many years I have used Crower rollers with the Hi-Po oil option.
Many years ago I spent weekends on nitro funny cars. At that time Crower and Crane were the only
lifters to hold up when those motors dropped a cylinder.
Since then I have used Crowers in engines we build and had zero problems.
Crower now also has a lifter without bearings and Im sure the Iskys are just as good.
They charge more money for those but I think they are a good investment in the long run.
Matt

[masracingtd1167]

Matt thank's for the quick reply . I forgot to mention that these are the .937 keyway lifters . I don't think that Crower makes one so I think that I am limited to the Jessel or Isky and the Jessel's are just so much money . Randy yes we are going to run a few Top Dragster races this year . It's kind of fun to show up at these races with a small block F.E.D. and out qualify some of those mega cube big block's

[coupemerc]

Bill, I got a free pair of custom red zone keyway lifters today. I have not gotten to play with them much yet but I believe that they are actually .936" diameter. Mine have a custom smaller wheel and they weigh 92 grams. I like the fact that they have no needle bearings and my understanding is that they have been extensively tested. Not sure if I am going to use them yet. See ya

[masracingtd1167]

I think that's the way I am going to go . I still have some problems that I have to address . The Isky's have an .850 roller and the Jessel's that I ran before were a .785 wheel so now I have to change cam's If I use too big of a base circle of a cam it hits the rods . Going to call Bullet this week and see if we can work this out.

[coupemerc]

I got a pair of Iskys with custom .750 wheels. They are prototypes. I looked at the difference in cam timing using a .750 wheel Isky verses a .850 wheel Jesel on the same cam. Duration measured at .013" lifter lift is 2 crank degrees more using the .850 wheel. Duration measured at .050" lifter lift looked to be the same between the two wheels. Total lift is the same. There is slightly more "area under the curve" with the bigger wheel. I'm a bit nervous about the Iskys during start up with high seat pressure (>400).

[coupemerc]

Bill, Did you end up going with the Isky's?