FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: wayne on January 06, 2014, 03:33:10 PM
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Can you run hyd roller lifters on a solid roller cam its .700-710 and 306-314 if that matters .
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Ask your cam manufacturer. Most say you can run Mechanical roller lifters on a hydraulic roller cam if you tighten up the lash to about .004-.006", but not hydraulic rollers on mechanical camshaft. You need to get the advice of the manufacturer. Joe-JDC
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I've done it on a few engines. Not sure if it's the "best idea" but they ran pretty well when I crush the lifter down to within .010 of the base.
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Why mess with the girly man lifters on a big solid cam? Just use solid rollers like the EZ-Roll Max lifters:
http://www.iskycams.com/ISKYExtremeZoneComboFlyer6.pdf
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"Girly man lifters" LMAO ;D ;D ;D
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With that much duration and lift, I would be leery about spring pressures and the effects on the hydraulic lifters. There are ways around it, but by the time you research the options and set up the engine to work like that, it would just be easier to go with a quality set of solid roller lifters like bushed Morels, Isky's, or Crowers.
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Thank you for the replies I just thought I would ask someone who knows for sure I have the solids.
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How long would solid roller s live on the street , street motor wise ? Thinking about options on the 463 stroker - hydraulic roller vs solid roller .. spring pressure differences and parts , i e the T @ D edelbrock street rocker s setup and or head mods required for either ? .. Bud
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I've run solid rollers on the street for a long time. Used to have problems periodically, but since the solid roller lifters became available with the pin oiling feature I've never had an issue. I think you just have to make sure you have the right springs to keep the rollers on the cam lobes, and don't overrev the engine, and they will last a really long time. I never keep my engines together long enough to really get good longevity data (can't seem to resist taking them apart and trying something else LOL!), but 10K miles has been no problem, with some very aggressive cam lobes...
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anybody have the Isky part # for the Ford FE (roller lifters) ?
I could not find it in the download link.
Question, I have comp mech roller in the motor now. Are these Isky the same size ? Or does this lead to new pushrods also ?
I just got a nice set from Manton last year.
Thank you,
Brian
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They didn't have a part number when I got a set before. They were planning to make up a part number but I don't know if they ever did. You just have to call them.
IIRC, the pushrod length that worked with Crower lifters were about the same with the Isky rollers. Never used Comp lifters so I guess this won't help much.
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Thanks Jay , any suggestion s on head mods for the T @ D street rocker s on the edelbrock heads mounting area ?.. Bud
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On the street rockers there are no mounting mods needed. Just decide if you want to oil through the pushrod or the head and plan appropriately.
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I never keep my engines together long enough to really get good longevity data (can't seem to resist taking them apart and trying something else LOL!),
It's pretty early in the year, but I'm pretty confident that that statement will make the top 10 list for "understatements of the year" ;)
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thanks Brent , but i was actually meaning do i need to look at different inserts on the heads for mounting - added spring pressures of a solid roller or even a hyd roller ? .. thanks Bud
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If you plan to approach the 600-625 lb open pressure ballpark, then yes, I would look hard at timeserts or another rocker setup. I run about 170/400 on hyd rollers and have never had a problem there.
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Ok thanks Brent , most likely it will be a hyd roller , on the stroker 28.. Bud
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Brent give me some specs on hyd roller s you have used on 427 , 428 , or 445 s , was thinking something in the 234-240 @ 50 and maybe in the 570 s on the lift , on a 110 - 112 lobe for the current 434 i have .. Bud