roller lifter feed holes

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roller lifter feed holes

Post  hbstang on August 17th 2017, 11:06 pm

i am getting close to completing a 557 with a kaase spec roller and crower lifters with pin oiling.the rockers are WW.my question is should i put a small notch in the lifter body to feed the rockers more or leave them stock.block is C AND C block,did have dyno time on it before i got it.lifters are new.the only oil feed to the rockers is the lifter to block clearance.not really getting the answers from engine builders.
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Re: roller lifter feed holes

Post  BOSS 429 on August 17th 2017, 11:10 pm

yes, just a little scratch tho
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Post  hbstang on August 17th 2017, 11:27 pm

OK,what what would be best?a small linear groove .01-.02 wide,maybe .005-.010 deep?or a small flat area,.005 deep?i know if its to big it will junk my new lifters!
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Re: roller lifter feed holes

Post  BOSS 429 on August 18th 2017, 12:16 am

hbstang wrote:OK,what what would be best?a small linear groove .01-.02 wide,maybe .005-.010 deep?or a small flat area,.005 deep?i know if its to big it will junk my new lifters!


what works great is buy a dremel and use the little cut off wheels, just a slit down into the under cut area

1 pass is all you need
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Re: roller lifter feed holes

Post  rmcomprandy on August 18th 2017, 5:15 pm

hbstang wrote: OK,what what would be best?a small linear groove .01-.02 wide,maybe .005-.010 deep?or a small flat area,.005 deep?i know if its to big it will junk my new lifters!

To deep ... use a small hand held file and flatten the surface between the hole and the oil groove about .002"/.003"; that is all which is needed.

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Post  hbstang on August 19th 2017, 5:06 pm

thank you both for your reply.yes,you can get a lot of oil at pressure thru a small hole.so i think a small flat spot should be enough.
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