BBC running Hydraulic roller cam with solid roller lifters
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BBC running Hydraulic roller cam with solid roller lifters

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    Default BBC running Hydraulic roller cam with solid roller lifters

    Hi
    Has anyone run BBC Hydraulic roller cam with solid roller lifters. I understand you need to set valve lashes to 0.08-0.10" run them tighter

    iron head and block
    Duration 0.050": 230/242
    Valve lift: 0.537/0.540
    113 lobe separation

    why as my heads are setup to run 200lbs @ 2.05" of seat, and have 500lbs open pressure, and camshaft installed in motor
    To run CC 854 Hydraulic lifters would need to reduce the seat pressure to approx. 160 lbs,385lbs open pressure. I have both hyd roller and solid roller lifters (crower and Isky)

    another question:
    when your running solid roller lifters in marine applications, do you experience any problems with failure from lack of oil when you idling around. When engine is running mid range expect there is no issue with oiling,
    Im running NO oil restricters

    cheers
    Brett

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    Senior Member racinjason65's Avatar
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    When I got my boat the original owner as well as the original engine builder had passed away so I didn't have a lot of info on my motor. Last year I took it apart and found that it had a hydraulic cam and solid lifters, at the time the engine had 150 hrs of it (40 by me) and ran well with no issues. It now has a solid cam and solid lifters.

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    Quote Originally Posted by bjf66 View Post
    Hi
    Has anyone run BBC Hydraulic roller cam with solid roller lifters. I understand you need to set valve lashes to 0.08-0.10" run them tighter

    iron head and block
    Duration 0.050": 230/242
    Valve lift: 0.537/0.540
    113 lobe separation

    why as my heads are setup to run 200lbs @ 2.05" of seat, and have 500lbs open pressure, and camshaft installed in motor
    To run CC 854 Hydraulic lifters would need to reduce the seat pressure to approx. 160 lbs,385lbs open pressure. I have both hyd roller and solid roller lifters (crower and Isky)

    another question:
    when your running solid roller lifters in marine applications, do you experience any problems with failure from lack of oil when you idling around. When engine is running mid range expect there is no issue with oiling,
    Im running NO oil restricters

    cheers
    Brett
    Brett,
    You can run solids on a hyd roller cam as you describe, but you'll lose some lift and duration.
    Those spring pressures are fine for Morel hyd roller lifters. I have three builds with those lifters and spring pressures and any of those engines will turn 7000+ rpm.
    With the solids and low rpm, there is a risk of lifter damage due to lack of oiling, but there are pressure fed lifters (like the Morels) which address the problem. With the pressure fed axles the problem is all but eliminated.
    To add: The Isky hyd roller lifters will handle your spring pressure. The Crowers will not.
    Last edited by steelcomp; 03-29-2013 at 08:28 AM.
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    Quote Originally Posted by steelcomp View Post
    Brett,
    You can run hyd rollers on a solid cam as you describe, but you'll lose some lift and duration.
    Those spring pressures are fine for Morel hyd roller lifters. I have three builds with those lifters and spring pressures and any of those engines will turn 7000+ rpm.
    With the solids and low rpm, there is a risk of lifter damage due to lack of oiling, but there are pressure fed lifters (like the Morels) which address the problem. With the pressure fed axles the problem is all but eliminated.
    To add: Isky hyd roller lifters are Morel, Crowers are not (they're Johnson). The Crowers will not take the spring pressure the Morels will.
    Not being smart@**, but He was asking about the setup of solid rollers on a Hydraulic roller cam.

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    Quote Originally Posted by Jspeeddemon View Post
    Not being smart@**, but He was asking about the setup of solid rollers on a Hydraulic roller cam.
    Yep...I wrote that assbackwards. Thanks.
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    HOT lash it should be .008" and .010".
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    To clarify...Crower hyd will not and Isky solid will handle that much spring pressure? No issue with Crower solid, correct?

    As for idling issues...mine sees 1050 rpm for as long as 1/2 hr. at a time with more cam and a little more spring and had the cam in my hand a few weeks ago and it still has the barely used look it had when i first put it in.
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    Quote Originally Posted by SoldHondaBoughtHondo View Post
    To clarify...Crower hyd will not and Isky solid will handle that much spring pressure? No issue with Crower solid, correct?
    The Crower hyd. roller will not handle 200# seat/500# open spring pressures. The Isky hyd. roller will.
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    Default Hot lash

    So if hot lash is 0.08-0.10 then cold lash should be around 0.05-0.07???
    cheers
    Brett

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    Quote Originally Posted by bjf66 View Post
    So if hot lash is 0.08-0.10 then cold lash should be around 0.05-0.07???
    cheers
    Brett
    .002/.004. Allow .006" for cold settings (for alum. heads), then re-check hot.
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    Quote Originally Posted by steelcomp View Post
    .002/.004. Allow .006" for cold settings (for alum. heads), then re-check hot.
    Not to confuse the issue here, but the OP has iron heads. Its still .008 and .010 HOT, but the cold will probably not be the .002/.004 that an alum head is.
    I have never run a solid with iron heads on a BBC in my entire life so I have no clue what the cold/hot difference is. But if its anything like a SBC, it less differential than with alum heads for sure.
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    Quote Originally Posted by gn7 View Post
    Not to confuse the issue here, but the OP has iron heads. Its still .008 and .010 HOT, but the cold will probably not be the .002/.004 that an alum head is.
    I have never run a solid with iron heads on a BBC in my entire life so I have no clue what the cold/hot difference is. But if its anything like a SBC, it less differential than with alum heads for sure.
    well, there is a way to figure that out. set 'em cold, get it nice and toasty, pull a vc real quick and check 'em hot. quickly while it's still toasty.

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    thanks guys
    I set them @ 0.07" and see how we get on
    cheers
    Brett

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    Quote Originally Posted by bp298 View Post
    well, there is a way to figure that out. set 'em cold, get it nice and toasty, pull a vc real quick and check 'em hot. quickly while it's still toasty.
    remember these? Ah, the good ole days.
    Hot oil burns, lashing on the fly. I'm amazed I'm not blind and partially maimed with some of the stuff we use to do.

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