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09-07-2009, 08:41 AM
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#1 |
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Olds rocker ?
Hey guys how or what do you drill the (i guess their steel) rocker arm fulcums with? My car has 3/8 studs & factory is 5/16....A regular bit just polishes it!!!!! HELP!!!!!
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Greg Fulk 308 308X P/SA "ALL AMERICAN" |
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09-07-2009, 08:43 AM
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#2 |
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Re: Olds rocker ?
probably hafta use Titanium nitride coated OR Carbide bit--run it at low speed in a drill press and flood the drill tip with coolant---water-oil --cutting flluid
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09-07-2009, 11:33 AM
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#3 | |
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Re: Olds rocker ?
xxxxxxxxxxx
Quote:
Last edited by GLEN DEMENGE; 09-09-2009 at 08:48 AM. Reason: i put in the wrong phone numer |
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09-07-2009, 04:06 PM
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#4 |
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Re: Olds rocker ?
I broke 1 @ Columbus Div race... I went & found an Alum. 1 from Judi Bureski's husband & we (dad & i ) drilled it out in the trailer... All the others I have are the steel ones & rockauto.com has them for $5.40 a pair so I got 3 pair just 2 be safe. I don't like having the steel ones on all cyl but one...mine is set up as adjustable with 3/8 studs & sb chevy push rods... I guess spinning one of these 307 6800 in the traps is a bit much?
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Greg Fulk 308 308X P/SA "ALL AMERICAN" |
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09-07-2009, 04:36 PM
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#5 |
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Re: Olds rocker ?
Greg
I had to use a reamer to take mine out to 3/8.Just use lots of coolant when reaming them out.
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Alan Warman STK 4107 |
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09-07-2009, 04:49 PM
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#6 |
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Re: Olds rocker ?
Greg,
Set them up in a vertical mill and use a carbide end mill. The end mill is a bit expensive. But it will tear thru those rockers like they are butter.  Chris |
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09-07-2009, 04:51 PM
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#7 |
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Re: Olds rocker ?
Would an American Motors rocker arm bridge work here? I had one apart once( a 304 powered Jeep) and they looked real close. I don't remember the brand name part we used on the engine rebuild for the Jeep, or whether it was aluminum or hard steel.
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09-07-2009, 07:37 PM
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#8 |
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Re: Olds rocker ?
Thanks Guys! Hope to have it flying for the Northern Sports Nationals!
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Greg Fulk 308 308X P/SA "ALL AMERICAN" |
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09-08-2009, 09:13 PM
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#9 |
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Re: Olds rocker ?
Olds and AMC pivets will interchange. ......I use an end mill to take them out to .375"
[and LOTS of coolant]. ......Tom
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Tom Goldman 1500 SG , 1506 STK |
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