And now a free Cox engine Care and Maintenance Guide

Cox International Sat Oct 15, 2011 2:07 pm

Click here for our Care and Maintenance Guide

This guide will also address “stuck” engines, a question so often asked on the boards.

Bernie
www.coxinternational.ca

PV Pilot Sat Oct 15, 2011 2:38 pm

Good stuff Bernie.

Another little tip for a tight motor is to ALWAYS preheat the top or upper part of the cylinder with the piston at BDC before starting. Did this for years when I was racing and still do it to this day. You don't want that piston slamming into the cold taper of the cylinder because it really scuffs the skirt of the piston, stretches the rod, shoves the crankshaft into the back bottom of block and pushes the oil wedge out of the way, ect. It can be extremely detrimental to the life of the motor.

I have some custom modified .21 engines that still will stick,,even after cases of fuel put thru the motor.

Some guys would use 3M lapping/polishing compound to free that up just a bit. the 3M stuff is ultra fine. This was for the guys who were engine sponsored and were trying to extract that last little bit of free/loose rpm's. Motor was loaded with after run oil and lapping compound, head was pulled off and the motor was spun over till it loosened up just slightly,Then a full dissasembly and hospital clean motor flush.

Cox International Sat Oct 15, 2011 3:25 pm

Hm, interesting... thanks for the tip.

Bernie
www.coxinternational.ca

microflitedude Sat Oct 15, 2011 5:55 pm

Cox International wrote:Hm, interesting... thanks for the tip.

Bernie
www.coxinternational.ca

If you leave an engine in rubbing alcohol for more than thirty minutes, won't it form a dull deposit on the aluminum parts?

nitroairplane Sat Oct 15, 2011 8:37 pm

microflitedude wrote:
Cox International wrote:Hm, interesting... thanks for the tip.

Bernie
www.coxinternational.ca

If you leave an engine in rubbing alcohol for more than thirty minutes, won't it form a dull deposit on the aluminum parts?

I dont think so it has never happened to me Huh...

nitroairplane Sat Oct 15, 2011 8:38 pm

microflitedude wrote:
Cox International wrote:Hm, interesting... thanks for the tip.

Bernie
www.coxinternational.ca

If you leave an engine in rubbing alcohol for more than thirty minutes, won't it form a dull deposit on the aluminum parts?

I dont think so it has never happened to me Huh...

**Admin** Sat Oct 15, 2011 10:25 pm

It will if you just take it out and not wipe it down. If you put it back in the rubbing alcohol, remove it and wipe it down, it won't feel dry and look dull. I sometimes leave the disassembled engine parts in a jar of light motor oil for a few hours or overnight after soaking in the alcohol.

GermanBeez Sun Oct 16, 2011 5:03 am

another trick:
frost-protective cooling agent. you know, the stuff that has dihydric alcohol (or glycol) in it.
that is the ultimate weapon against grime, dirt, andcastor residue. but NO PLASTIC PARTS!
glycol will dissolve plastic parts in a matter of hours. but metal parts will be clean as if someone had
put them in an ultrasonic cleaner. (you can use that, too Very Happy