Iron 421 ET 255 Dyno Results, what's wrong with it?
08-24-2006, 08:28 PM
#21
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Originally Posted by beardWS6
Did you try it? Let us know the results. Thanks!~
no i havent touched it yet, actually i dont know when i will get to it being that i sprained my ankle and stretched tendons in it today.
08-24-2006, 08:33 PM
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Originally Posted by SStrokerAce
Well lets stop guessing on this and just give the lobe numbers on the cam out or tell me the .200" duration and then it could be a easy, ah HA it's not enoug nose pressure. Hell what's the installed height and coil bind, maybe it's a unrecoverable spring surge issue as well. If the spring can't control the valve when the lifter goes over the nose it's going to go into the toilet really fast even if it has crazy seated pressure.
I doubt you have a pushrod problem just because of the parts list, you are running some good pushrods correct?
Bret
I doubt you have a pushrod problem just because of the parts list, you are running some good pushrods correct?
Bret
pushrods are lunati's they are not the problem.
08-25-2006, 03:42 PM
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Originally Posted by beardWS6
When do you think you might work on it. I`m curious what you find. Thanks!
08-26-2006, 12:50 AM
#25
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Are you running Ti retainers and Keepers? Valves type? All of this comes into play. Also any reason your running those jessels?
spring options you may consider. I have never seen a little extra spring pressure rob power but will help control spring surge.
921's:
O.D: 1.300
I.D: .870 (outer spring)
I.D: .655 (inner spring)
135 LBS @ 1.770
400 LBS @ 1.220
COIL BIND @ 1.040
MAX LIFT .650
Patriot Golds:
O.D 1.29
135lbs @ 1.800
385lbs open
coil bind @ 1.08
.650 lift
spring options you may consider. I have never seen a little extra spring pressure rob power but will help control spring surge.
921's:
O.D: 1.300
I.D: .870 (outer spring)
I.D: .655 (inner spring)
135 LBS @ 1.770
400 LBS @ 1.220
COIL BIND @ 1.040
MAX LIFT .650
Patriot Golds:
O.D 1.29
135lbs @ 1.800
385lbs open
coil bind @ 1.08
.650 lift
Last edited by SILVERZZ28; 08-26-2006 at 02:22 AM.
08-29-2006, 06:50 PM
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sorry guys i havent posted in a couple days but work has been insane and i really dont think i'm gonna get to the car before next weekend.
08-29-2006, 07:44 PM
#34
Originally Posted by Spinmonster
I dont know what you mean by that but it is costing you 20+rwtq
08-30-2006, 03:44 PM
#36
Originally Posted by Beast96Z
Down low maybe, but he can rev it higher (intake permitting) and make more peak power. Just depends on what he is wanting to do with the car. If he got a better intake, he could lower the camshaft size and possibally do better, hence the cam vs. cubes in my sig. It's all about efficency, and some times you have to overcam to overcome a intake crutch.
08-30-2006, 06:19 PM
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Originally Posted by Spinmonster
He can run 8.7 dcr and it will make more power up top also 12-14rwhp more and add in 20rwtq too. He could still run 7k rpms. At a minimum he should advance the cam 2 degrees.
cam was degreed in straight up and came in at just under 113
08-30-2006, 06:38 PM
#38
Originally Posted by antz01ta
cam was degreed in straight up and came in at just under 113
The peak you are trying to force beyond 6300 is past where the FAST peaks so the cam advance will coincide with the FAST peak so you would gain both a TQ peak down low and a HP peak at 6300 or so.
Last edited by Spinmonster; 08-30-2006 at 06:59 PM.
09-03-2006, 10:43 AM
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well i tore into it today and the lifters were at .035 preload. i set them to .010, and the valve wipe looked perfect. hopefully this will solve the problem, i am just about ready to start putting it back together. i'll let you guys know how it feels.
