[TPR] Asa's Engine rebuild update - eggs
David in Durango
adin at frontier.net
Sat Jul 21 10:05:18 PDT 2012
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
To: Asa Jay Laughton ; 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.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.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> 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.teampanteraracing.com
>>>> http://facebook.com/racingagainstautism
>>>>
>>>> _______________________________________________
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