[TPR] Asa's Engine rebuild update - eggs
Asa Jay Laughton
asajay at asajay.com
Sat Jul 21 10:30:32 PDT 2012
Journals are still round. Mic'd in six places.
Crank already turned 0.010 under.
You can readily get bearings in 0.001 and 0.002 oversize for mildly worn
or simply polished stock cranks.
But you -can't- readily get bearings in 0.011 or 0.012 oversize for a
Ford, much less a 351C. They go from .001 and .002 to 0.010, those
available in a 0.011 oversize are apparently for other small block Fords...
... and they are -damn- expensive. Much easier to shim, unfortunately,
finding tapered shim stock (the better to use) is also difficult. I've
only found one supplier and it too is very expensive.
I can find 0.001 shim stock which if used on both bearing halves would
reduce the clearance by 0.002. I would simply have to trim for the oil
hole on the block side. I'm not really fond of this idea, but don't
like the idea of shimming only one half even more.
For the 0.0002" difference, maybe I shouldn't worry about it. In fact,
looking at the photos again, all the plastigage is actually a bit wider
than the 0.003 mark, so most likely the clearance is -less- than 0.003.
I don't think I'll worry about it.
I'll upload photos in a little while.
Asa Jay
Asa Jay Laughton, MSgt, USAFR, Retired
& Shelley Marie
Spokane, WA
******************************
http://www.racingagainstautism.com
http://www.teampanteraracing.com
http://facebook.com/racingagainstautism
On 7/21/2012 10:05 AM, David in Durango wrote:
> Some thoughts:
> So, we are shimmng 1/2 or .001" ?????? Hmmmmm.
> DANGERDANGERDANGER
> called my machinist (John) - you owe him a 12 pack of Modelo Especial
> . . .
> First, John said one used to be able to buy .001 bearings. Shimming
> is from Model A days and he didn't recommend. What John would
> recommend is to mic the journals at least four different places to
> determine if the journals are egg-shaped for some reason. If still
> round, look for the .001 tighter bearings. Alex at Moneymaker or Russ
> should know if these are available. If you have egg shaped journals
> (I'd check the rods, too) turn the crank. Hope you found a good
> machine shop!
> Note: John and I plastigauged my brgs dry - I've never heard of oil .
> . . .
> I trust John's experience way more than my personal opinion - and
> always call when I'm not sure.
> Good luck!
> David
>
> ----- Original Message -----
> *From:* John Bentley <mailto:gndplne at yahoo.com>
> *To:* Asa Jay Laughton <mailto:asajay at asajay.com> ;
> tpr at teampanteraracing.com <mailto:tpr at teampanteraracing.com>
> *Sent:* Saturday, July 21, 2012 9:54 AM
> *Subject:* Re: [TPR] Asa's Engine rebuild update
>
> Asa, I've never done that (shimming), so not sure. I've always
> checked clearance with oil (operating conditions) on all bearing
> surfaces (not dry) so not sure if that makes any difference. I
> also use oil or grease to hold the plastigauge where I wanted it.
>
> http://www.plastigaugeusa.com/how.html
>
> Hopefully you'll hear from Russ or some other knowledgeable engine
> guy.
>
> JB
>
> ------------------------------------------------------------------------
> *From:* Asa Jay Laughton <asajay at asajay.com>
> *To:* tpr at teampanteraracing.com
> *Sent:* Saturday, July 21, 2012 8:05 AM
> *Subject:* Re: [TPR] Asa's Engine rebuild update
>
> Anyone?
> JB, any opinion on the use of shim stock to tighten up the
> tolerance on
> the main bearings?
>
> Asa Jay
>
> Asa Jay Laughton, MSgt, USAFR, Retired
> & Shelley Marie
> Spokane, WA
> ******************************
> http://www.racingagainstautism.com
> http://www.teampanteraracing.com
> http://facebook.com/racingagainstautism
>
>
> On 7/20/2012 8:29 PM, Asa Jay Laughton wrote:
> > Not much done tonight.
> >
> > - Reviewed the Plastigage. 0.003 clearance on all mains. Spec
> calls
> > for 0.001-0.0015 Desired, with 0.0028 being max allowable.
> Sounds like
> > I should probably shim and can get it from Napa.
> >
> > Alrighty then, it's been over 25 years since I shimmed a crank.
> I've
> > lost the knowledge, but know it can be done. I'm looking for expert
> > pointers on this... Russ???
> > - Shim both bearing halves or just one?
> > - How?
> >
> > Took inventory of gaskets. Need intake, front cover, oil pan, front
> > main seal, one head gasket (will probably buy two just for good
> > measure). Rest of rod bearings did -not- show up today (darnit).
> > Break-in oil did though. I also have three bottles of assembly
> lube,
> > will use it liberally on all parts, mains, rods, cylinders, cam,
> > lifters, etc.
> >
> > Gotta get'er done.
> > Asa Jay
> >
> > Asa Jay Laughton, MSgt, USAFR, Retired
> > & Shelley Marie
> > Spokane, WA
> > ******************************
> > http://www.racingagainstautism.com
> <http://www.racingagainstautism.com/>
> > http://www.teampanteraracing.com <http://www.teampanteraracing.com/>
> > http://facebook.com/racingagainstautism
> >
> >
> > On 7/20/2012 6:41 AM, Asa Jay Laughton wrote:
> >> Oh, you're way ahead of me... :) I'll have to move fast to
> catch up.
> >>
> >> Asa Jay
> >>
> >> Asa Jay Laughton, MSgt, USAFR, Retired
> >> & Shelley Marie
> >> Spokane, WA
> >> ******************************
> >> http://www.racingagainstautism.com
> <http://www.racingagainstautism.com/>
> >> http://www.teampanteraracing.com
> <http://www.teampanteraracing.com/>
> >> http://facebook.com/racingagainstautism
> >>
> >>
> >> On 7/19/2012 9:44 PM, David wrote:
> >>> Well, dang. Asa Jay may(?) catch and pass me.
> >>>
> >>> Since the lift debacle: flywheel installed, clutch installed,
> ZF mated to Cleveland (never thought I'd see that again, balance
> point determined ( pulled the ZF separately - not recommended).
> >>>
> >>> Still plenty to do before the stab.
> >>>
> >>> Cheers,
> >>>
> >>> On Jul 19, 2012, at 10:33 PM, Asa Jay
> Laughton<asajay at asajay.com <mailto:asajay at asajay.com>> wrote:
> >>>
> >>>> - Cleaned the crank with a 0.22 caliber boresnake. No
> residue. Blew
> >>>> out with compressed air.
> >>>> - Honed the cylinders, put a pretty good cross-hatch in there
> (amazing
> >>>> how smooth and shiny the cylinders actually were before honing.)
> >>>> - Cleaned, scrubbed the block with clean rags, brushes where
> possible
> >>>> and blew out with compressed air.
> >>>> - Placed main bearings -dry-, with crank and Plastigage.
> Torqued to
> >>>> spec using ARP assembly lube. Will let sit overnight and
> check readings
> >>>> tomorrow.
> >>>>
> >>>> - Waiting on balance of rod bearings.
> >>>> - Will probably assembly new rings to pistons tomorrow but
> may need to
> >>>> hold off piston insertion until rod bearings arrive.
> >>>> - May be able to install cam/lifters and spring/spider
> assembly (holds
> >>>> the roller lifters in place) this weekend.
> >>>> - May be able to assemble timing gear set (Pete Jackson quiet
> gear
> >>>> drive) and front cover too. We'll see how it goes.
> >>>>
> >>>> - I should really pull the radiator this weekend too, in
> order to see
> >>>> how bad it is or isn't.
> >>>>
> >>>> Everybody check your harnesses. The set Mad Dawg gave me a
> few years
> >>>> ago have now expired (was expected) so I need at least one
> new. Helmet
> >>>> is still good, SA 2010.
> >>>>
> >>>> Still need tires, waiting for budget to replenish. A little
> closer
> >>>> though... sold an old set of ARE wheels I used to run on the
> Mach I...
> >>>> since the Campy's look so much nicer on it now. :) ... and
> can runner
> >>>> a wider tire on the rear! Hoo rah!
> >>>>
> >>>> Photo uploads much later... trying to concentrate on the
> actual work but
> >>>> still taking photos.
> >>>>
> >>>> Asa Jay
> >>>>
> >>>> --
> >>>> Asa Jay Laughton, MSgt, USAFR, Retired
> >>>> & Shelley Marie
> >>>> Spokane, WA
> >>>> ******************************
> >>>> http://www.racingagainstautism.com
> <http://www.racingagainstautism.com/>
> >>>> http://www.teampanteraracing.com
> <http://www.teampanteraracing.com/>
> >>>> http://facebook.com/racingagainstautism
> >>>>
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