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Old 08-11-2011, 01:15 AM   #16
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Default Re: SB2.2 Lifters, Who to use?

A lot!
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How much faster you trying to go?
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Old 10-13-2011, 12:52 AM   #17
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Default Re: SB2.2 Lifters, Who to use?

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no double offsets ,i've tried that with a handfull of engines and they all have had issues, scewing the lobes and cocking.. we try to use a straight exhaust on most of the sb.2 set ups. yes we have a 903"dia with .815" wheel on spl. bearing material. the key lock is even better for an extreme hi lift lobe. ... i also have a few rare sb.2 cam cores for std. block that are 55mm . 4/7 swap and 504"/500" lobe lift 288/305@ 050"... has made over 1000 hp on a single carb engine n/a.


What rocker ratio was used with this?
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Old 10-13-2011, 10:04 AM   #18
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Default Re: SB2.2 Lifters, Who to use?

2.0 / 1.9
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Old 10-13-2011, 11:51 AM   #19
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Default Re: SB2.2 Lifters, Who to use?

I run crower standard diameter double offsets in my motor with Trend 7/16 .165 wall pushrods, T & D rockers with a 1.75 and 1.85 ratio. I have had no issues and currently shift at 8400 rpms and the motor has seen 8600 rpms plenty of times.
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Old 11-21-2011, 07:20 AM   #20
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Default Re: SB2.2 Lifters, Who to use?

Just getting started with my SB2 topped aluminum Donovan.This motor is going in a motorcycle,so camshaft selection is a little different given the torque number is not important to me.Since these SB2's make a lot of torque looking to kill some of it off.The bike when done will weigh in the 900lb range anybody got any ideas on the .050 duration and lift? Been talked into 3.875 stroke,with it a 4.155 bore.Wanted a 4.00 stroke with 4.125 bore some do not like that stroke in a standard block. New to this site Mike Ross
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Old 11-21-2011, 08:29 AM   #21
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Default Re: SB2.2 Lifters, Who to use?

cool its a boss hoss ? im gonna build a similar bike but with differnt engine....
is it a sb2 block or head only on conventional block ? .. limited to what you can do here on cam cores. a small base sb2 core is rare with low lilft specs you require
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Old 11-23-2011, 02:55 PM   #22
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Default Re: SB2.2 Lifters, Who to use?

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Originally Posted by CROWER View Post
no double offsets ,i've tried that with a handfull of engines and they all have had issues, scewing the lobes and cocking.. we try to use a straight exhaust on most of the sb.2 set ups. yes we have a 903"dia with .815" wheel on spl. bearing material. the key lock is even better for an extreme hi lift lobe. ... i also have a few rare sb.2 cam cores for std. block that are 55mm . 4/7 swap and 504"/500" lobe lift 288/305@ 050"... has made over 1000 hp on a single carb engine n/a.
Dan.... does that core need the lifter bores bushed to deal with the oil hole location in the block?
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Old 11-25-2011, 09:20 AM   #23
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Default Re: SB2.2 Lifters, Who to use?

I run double offset Crower's, no problems at all so far.
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Old 12-01-2011, 07:20 PM   #24
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Default Re: SB2.2 Lifters, Who to use?

i run crower .874 double .180 offset tall lifters-----------never had a problem--------------sees 8100-8200 in the lights every pass
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Old 12-01-2011, 07:24 PM   #25
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Default Re: SB2.2 Lifters, Who to use?

this is a dart iron eagle raised cam block-----std. lifter location
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Old 12-02-2011, 09:06 AM   #26
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Default Re: SB2.2 Lifters, Who to use?

yes for sure .. bush it to 904 at least. lets do one ? i have 2 cores left for this monster

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Dan.... does that core need the lifter bores bushed to deal with the oil hole location in the block?
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Old 03-17-2012, 03:47 PM   #27
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Default Re: SB2.2 Lifters, Who to use?

Got the Donovan block home polished it had it finish decked ordered the pistons,checked the crank clearance.Once the bores are finished will get it balanced then can bolt it together.Checked valve spring pressure 240lb closed tad over 600lb open .715 lift.Seemed high with titanium valves and keepers,doubt this motor will see serious rpm,s .What do you guys think.
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Old 04-01-2012, 05:36 PM   #28
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Default Re: SB2.2 Lifters, Who to use?

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Originally Posted by CROWER View Post
cool its a boss hoss ? im gonna build a similar bike but with differnt engine....
is it a sb2 block or head only on conventional block ? .. limited to what you can do here on cam cores. a small base sb2 core is rare with low lilft specs you require
The Donovan SB2 is coming along pistons are being fit all that's left is balance assemble and dyno
What are you building for a bike Crower
Mike Ross
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Old 04-02-2012, 08:37 AM   #29
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Default Re: SB2.2 Lifters, Who to use?

been drawing up a 330 hp honda k series in alloy chassis with v tec !!
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Old 04-07-2012, 07:52 AM   #30
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Default Re: SB2.2 Lifters, Who to use?

That ought to get the job done, power to weight should make the G force plentyful.Might want to consider handlebar modification as in thicker walls
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