paradigm shift

Well I was lucky it looks like no major block damage. If I have the lifter bores bushed what kind of hours can someone expect before replacing hydraulic roller lifters. Will solid rollers last any longer. Have a little over 100hrs on these. Crane cam 630 lift. 5600rpm max. Very frustating and flat tappets are looking pretty good right about now.

KAAMA

iTrader: (1)

The problems with solid roller lifters will most likely SOAR over the hydraulic rollers. Solid rollers will make more power over a hydraulic roller but they have too much spring pressures which is very hard on parts and they wear/break more than you'd most likely care to mess with.

If you're still thinking of replacing the hyd rollers, the flat tappet mechanical solid lifters will probably be the closest thing to the kind of power you were getting from the hyd rollers-------but you will STILL have to do the periodic valve adjustment thing!

Having the lifter bores bushed is probably a good idea as you may have to just to be able to use the block again. I would think you'd get more life out of the lifters by having them bushed.

Biggus

iTrader: (1)

I just went through the same headache

I`m going with Isky this time around. What brand are yours?

paradigm shift

Crane lifters. Springs are COMP that Teague reccomended. Don't remember number off hand. I still need to check spring pressures. I am unable to see any excess wear as for a side load on bars but I will have lifter bores bushed next go around if the block checks out.

Just have to find a way to make this thing last.
Wonder how many hrs the Isky lifter wil run?

Thanks for info guys I know I am not the only one going down this road.

PatriYacht

Budah, is that a good cam for a 540 that will be spun to 5600 now and then.

KAAMA

iTrader: (1)

Jack, Is that a solid roller cam you're talking about?

mr_velocity

So if I pull out my crane roller lifters can I just install the isky or do I need to change the cam as well?

VelocityMark

Mr velocity we put a 741 in a 280 velocity 496 inch with a blower (7 pounds boost)and old brodix heads and ran at 100 this past week-end FYI [/B][/QUOTE]

Jack if you are talking about mine, I don't know about 100, but it did turn a 30 pitch Bravo1 prop 5800 with 4.25 people and 3/4 tank of fuel.

VelocityMark

10lbs. and a nose cone who knows what may happen. And by the way welcome back

paradigm shift

What springs would you reccomend with the solid roller cam you are reccomending. I can handle adjusting valves every 40 or 50 hrs if it will live. Beats a full rebuild or more every 120 when they break.

Anyone running Shubeck (spelling?) treated solid flat tappet lifters? I know one of you are running the radius lifters but I was told by a pretty rebuitable source that I would not give up much with Schubeck solid lifters and they would outlast anything made? I know I will be running much lower lift than some.