ORIGINAL: NM2K
ORIGINAL: MetallicaJunkie
I would never do it, but ive heard some of the old timers say they used to use Bonami to speed up the break in process back in the day..
http://bonami.3nerds.com/index.php/p...nser/undefined
i would only do it on a new cheap engine as an experiment... lol i just made a note to self
I remember learning that the Chevrolet dealerships were instructed to pour Bon Ami through the carbs of '55 Chevy V-8 engines that blew oil smoke out of the exhaust (smoked) when new. Later on, I saw our local American Motors dealership doing the same thing to 1963, or so, seven main bearing six cylinder inline engines that were slow to break-in the chromed rings that they came with. But that was with completely differently scaled machines, with different fuel lubricity and tolerances.
Fox used to sell Lustrox (might still), which, when mied with castor oil, was used to help break-in some models of their engines. I witnessed two fellows break their Fox engine in and out all in one running session. That convinced me that some things were just worth waiting and working for.
Let me repeat. I AM NOT an engine expert. I do have lots of experience and some chiseled in stone opinions, but don't do as I say. Guiding the layman thusly is the job of the manufacturer, Dar Zeelan and the few MECHANICAL engineers (no, software engineers don't count) that inhabit this forum.
Ed Cregger
Or electrical engineers
I remember the lapping compounds. Unless you knew what you were doing you could easily ruin an engine in a few minutes. Running those mehanite piston engines at the 2 4 break for a gallon or so for break-in would give you a long lasting engine. Now an engine with pinch, I've seen engines fitted so tight you had to preheat the cylinder and head to get them to turn over. Extra lube and a slightly, slightly rich needle is whats called for on those babies to maintain the fit. Enya AAC engines had no pinch but with a plug installed could hardly be turned over slowly the fit was so good. I had a NIB 60xlf-4 gp w/ pipe but sold it, couldn't pass up the offer from a Japanese collector. btw, that little gem sold for over $300.00 in the 80's but the quality was above anything else on the market at the time. I still have a nib rear exhaust 60 xlf-II, same piston and liner, no pump and different carb. A great deal of engineering went into those engines and carburators. Most people will never know the quality of the top Enya engines from days gone by.