Has anybody used Pat McGivern's Break-in?

[Bravosarah]

Has anybody used Pat McGivern's Break-in secrets? What do you think about his method?

http://www.mototuneusa.com/break_in_secrets.htm

 

[JeepJeepster]

Thousands of PSI? huh?

How much pressure does he think is in the combustion chamber?

 

[tjkj2002]

On a mass produced engine that you want to last,break it in nice and easy for at least the first 500 miles.There is also more then just a engine you are breaking in on a new vehicle,you got the ******,t-case(if you have 4wd),and diffs.

A race/drag engine that is built from higher quality parts and better tolerances(and most likely balanced),go for it.If I rebuilt my 3.7 it would be with better parts,more exact tolorences,and be balanced so a fast/hard breakin would be more practical.


I have gently broken in all of my rebuilt engines except 2 of them,they where built for racing and I "broke" them in on a engine dyno(after tuning) in less then 20 min.There are little assembly secrets that I have been taught for building better engines and a faster breakin from poeple that have been building race engines for over 50 years.Both of those engines produced over 475 HP,one I put over 30,000 trouble free miles,the other had 10,000 miles before they where sold.They both saw 7000rpm's most of the time they where ran,almost always WOT.One was a Chevy 350,the other was a Olds BB350 Rocket.

 

[tjkj2002]

Thousands of PSI? huh?

How much pressure does he think is in the combustion chamber?

In the KJ's 3.7? About 9 times the atmosheric pressure coming up to TDC on the combustion stroke,a couple of thousand psi at least when that fuel/air mixture goes bang.Remember you are producing a "controlled" explosion.

 

[JeepJeepster]

In the KJ's 3.7? About 9 times the atmosheric pressure coming up to TDC on the combustion stroke,a couple of thousand psi at least when that fuel/air mixture goes bang.Remember you are producing a "controlled" explosion.

Im stupid. I was thinking of checking the compression with a guage(no firing).

Ignore anything I have said in this thread.