After talking to more than four cam
manufactures, I decided to go with
Iskenderian.
This will be the second cam I have owned from them. The one I got was a
special grind that only took 3 days to get after I ordered it.
|
|
|
Now this is a solid roller made out of
a solid piece of 8620 steel and then heat treated. I didn't want to go
with a hydraulic roller because a solid cam can RPM better. Plus I'm use
to a solid cam. The specs on the cam are: Lift - .645, duration @ .050
264 Intake and 272 Exhaust with a 110 degree lobe center. Now if you don't
know what the "@ .050" is, the older way to call it out is 298
degrees on the intake and 306 exhaust. If you still don't know what all
this means.....well......let's put it this way, it should have a rough
idle. The lobe center is how the cam works at certain RPM's. Say I had a
106 degree lobe center, this would have a really cool sounding idle but
would be very peaky. This means that the cam would work in a smaller RPM
range. The larger the lobe center, the larger the RPM range. They make
104 all the way to 114 degree lobe center so it just depends on what
your wanting to do with your car.
|
|
|
RED
ZONE Roller Lifters feature the new Marathon
Roller Bearing -- the bearing that keeps on rolling longer! Marathon
bearings utilize a larger diameter pin and a shock absorbing, thicker
outer race for higher fracture toughness! The resulting increased cross
sectional area helps prevent premature bearing failures even under the
sustained RPM red line abuse of professional endurance racing. In drag
racing, Marathon bearings withstand higher
(up to 1/2 ton) spring loads, delivering over twice the number of runs
between rebuilds!
|
|
|
After looking at these new lifters, I
had to have them. Why? Because of the way they oil. Now the way roller
lifters get oil on the rollers is by way of the splashing effect from
the crankshaft. The higher the RPM, the more splashing which means more
oiling. This is the big reason that you wouldn't want a solid roller on
the street but Iskenderian came up with a way of oiling the rollers and
cam lobes.
Notice the oil hole next to the dark ring. This oil hole goes to the top
to oil the rocker arms but doesn't stop there. Notice the small hole next to the
pin that goes through the roller? This gets some much needed oiling to some
critical places that others don't.
|
|
|
I got this picture from Isky's website
to show one other place they oil. Notice the two small holes where the
roller would sit. This has got to be one of the best features of this
lifter because this will oil the all critical cam lobes. With out this
kind of lifter, I would be chancing things.
|
|
|
|
1
2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25
26 27
28 29 |
|
30
31 32
33 34
35 36
37 38 39
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54
55 |
|
56 57
58 59
60 61
62 63 |
