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Ebel
Samba Member
Joined: June 07, 2015
Posts: 564
Location: New york
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 Posted: Sun Jul 25, 2021 3:11 pm Post subject: Re: Lifters "feel" too tight after sleeving |
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| Yeah. I use reamers pretty regularly. They might be labeled to .0001” but even in a precise setup you can get the bore big or small depending on rpm and feed rate. And the amount of material left before reaming and the concentricity of the tool to the holder and bore. I’d probably take some off the lifters myself at that point. Can always get new lifters. Modify cheapest part first if possible. |
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mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
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| Posted: Sun Jul 25, 2021 5:37 pm Post subject: Re: Lifters "feel" too tight after sleeving |
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| nsracing wrote: |
IF you use a reamer, you will fuck it up. The flex hone is the best way to bring it to specs if tight.
Precision reamers are meant for machine tools. Not by hand. |
ding ding ding we have a winner!!!!
as for the cam lube use soft springs for all rocker geo testing & refining. yes the cam shield is very good I use it on the cam and the cam shield oil additive for the first back of oil only.as it can cause ash deposits in the chambers and detronation if used rong,.,,, rong is in the regular oil & filter changes. |
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RWK
Samba Member
Joined: June 24, 2009
Posts: 1349
Location: S.W. MI
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| Posted: Sun Jul 25, 2021 7:13 pm Post subject: Re: Lifters "feel" too tight after sleeving |
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Best to bore the hole then bore the bushing, maybe ream the hole, then bore and hone the bushing I.D., only way to get it on proper location to the cam. Reamer's always follow the previous hole, right or wrong.
_________________
73 Type 181
63 Type 113
63 Type 261- 428 071
62 Type 241-378 025 178 530 |
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nsracing
Samba Member
Joined: November 16, 2003
Posts: 9473
Location: NOVA
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| Posted: Mon Jul 26, 2021 8:01 pm Post subject: Re: Lifters "feel" too tight after sleeving |
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I have to bore a case this week. Been some time and I remember enjoying this stuff. 
Is that a Criterion boring head? |
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RWK
Samba Member
Joined: June 24, 2009
Posts: 1349
Location: S.W. MI
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| Posted: Tue Jul 27, 2021 6:30 am Post subject: Re: Lifters "feel" too tight after sleeving |
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Yes, and 3/4 dia. Everede bar, line up the cam bore straight, do the offset, takes about 2 min./hole, 3 passes each, rough and finish (CNC) then press the bushings in,( pre-made in the lathe while boring) and repeat, got to sneak up on the bushings, try to get those on size, then remove and drill oil hole, then hone for clearance, ( hone also de-burrs oil cross hole) lot of work, case must be good to warrant the work!
_________________
73 Type 181
63 Type 113
63 Type 261- 428 071
62 Type 241-378 025 178 530 |
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mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
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| Posted: Tue Jul 27, 2021 8:32 am Post subject: Re: Lifters "feel" too tight after sleeving |
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| I always deburr holes & edges before and after honing. how much press fit do you use on lifter bushings? |
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RWK
Samba Member
Joined: June 24, 2009
Posts: 1349
Location: S.W. MI
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| Posted: Wed Jul 28, 2021 4:25 am Post subject: Re: Lifters "feel" too tight after sleeving |
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Light press we call it in the T&D biz, about .001, gets tighter as it gets deeper of course 
_________________
73 Type 181
63 Type 113
63 Type 261- 428 071
62 Type 241-378 025 178 530 |
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