[TPR] Mach I engine progress

[cengles at cox.net]

Dear Asa,


               I agree with your approach.  After my engine building 
education based on my own mis-adventures and the help of mentors, I 
first make my own best measurements, but I depend on my professional 
machinist's measurements and judgment.    It does sound like after the 
engine has had a thorough cleaning and sonic check that is hopefully 
favorable, then the other points you raised should be checked by the 
pro.  Progress.


                       Warmest regards,  Chuck Engles




On Tue, Nov 21, 2017 at 9:45 PM, Asa Jay Laughton via TPR wrote:

I'm using a bore micrometer similar to this:

      Image result for bore micrometer



      I won't swear on my quick measurements (they were quick and dirty) 
and I agree it doesn't seem like a lot of wear.  BUT, I can see this 
engine certainly has some miles.  Several cam lobes show wear, 
though the lifters seemed okay (but flat).  One of the cam bearings 
was split and broken in two.  I'm wondering if the cam bore is 
misaligned; something I'll need the machine shop to check.  (I guess 
it could be a crooked cam but probably not so much)



      Agree, first thing to do is have block checked for bore thickness 
(sonic check) and cracks, etc.  I'm not buying any parts yet.  At 
the same time I'll probably have the shop measure the bores to see 
what they get.  I'll have to start calling around to different 
machine shops shortly.



      We all know Mad Dawg's tool is short, so that may be why I'm 
getting     an inaccurate measurement.  ;)



      Welcome home Dawg,

      Asa  Jay



      Asa Jay Laughton - W7TSC, MSgt, USAFR, Retired
Spokane County ARES-RACES Net Manager
******************************
http://w7tsc.org <http://w7tsc.org>
http://www.teampanteraracing.com <http://www.teampanteraracing.com>


      On 11/21/2017 2:26 PM, John Bentley via TPR wrote:



maybe its a really low time engine, who knows.  It is 
difficult to make accurate inside bore measurements.







Before getting too far into it I'd want to do a sonic check 
and a mag.







JB





















  On Tuesday, November 21, 2017, 2:20:19 PM PST, DENNIS 
ANTENUCCI <TEAMPANTERA at yahoo.com> <mailto:TEAMPANTERA at yahoo.com>  wrote:
















He borrowed my equipment





Sent                       from my iPhone






                          On Nov 21, 2017, at 2:17 PM, John Bentley via 
TPR <tpr at teampanteraracing.com <mailto:tpr at teampanteraracing.com> > 
wrote:















well that's interesting since the                               original 
factory bore is 4..000 ! :)







How are you measuring ?  What type of                               tool 
are you using?







JB





















  On Tuesday, November 21, 2017, 
1:48:50 PM PST, Asa Jay Laughton via 
TPR <tpr at teampanteraracing.com <mailto:tpr at teampanteraracing.com> > 
wrote:
















  A quick mic check of all 
cylinders just under the ridge 
shows between 4.003 and 4.006, 
depending on the hole.



                                        Asa  Jay

                                        Asa Jay Laughton - W7TSC, MSgt, 
USAFR, Retired
Spokane County ARES-RACES Net Manager
******************************
http://w7tsc.org <http://w7tsc.org>
http://www.teampanteraracing.com <http://www.teampanteraracing.com>



                                          On 11/21/2017 12:12 PM, John 
Bentley via TPR wrote:



I would say that stock 
nodular iron crank is good 
for 500 hp for sure.  I 
would use it.







John













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