US Chrome

bigshrimpin · #1 03-07-2006, 05:12 PM

The motor I just picked up has a lightly scored cylinder that can probably honed out. If for whatever reason it can't be honed . . . I was thinking about having the cylinder replated . . . since the early mercs are all chrome bore motors. Has anyone ever used these guys or has an cylinder rechromed?

http://www.usnicom.com/index.html

macojoe · #2 03-08-2006, 12:01 AM

Ha Ha I never even knew they were chromed???

Skools Out · #3 03-08-2006, 12:58 AM

same here scratching my head humm only motor i ever knew had chrome cylinders were chainsaw's and weed eater's :o Why would you chrome a 4 stroke hum sounds and smells fishy

Airslot · #4 03-08-2006, 11:20 AM

Skools, he's talkin Merc 2 stroke, you know, a really big weed eater...
They do have chome bores but I thought you could re-sleeve those motors?

Airslot

Skools Out · #5 03-08-2006, 03:31 PM

yeah you can. I've seen them bored / honed and then use Wisco Pistons ???

bigshrimpin · #6 03-08-2006, 04:21 PM

All the early merc's 2.4L (till 88??) were chrome bore. That's one reason these motors last so long. The 2.0L, 2.5L, and later 2.4L were steel and can be bored and honed and fitted with an oversized piston. I've been told that chrome bore motors cannot be honed or bored b/c of the coating. Apparently the two fixes for the 2.4L chrome bores are re-sleeve or replate the cylinder.

http://www.mt-llc.com/index_home.shtml
http://www.mxratracing.com/cylinder.html
http://www.maxpower-engines.com/mpcpricesend.htm
http://www.mongoosemachine.com/cylinder-plating.htm

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Is there any truth to this?
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http://www.usnicom.com/Why%20plate%2...20resleeve.htm

WHY RE-PLATING IS BETTER THAN RE-SLEEVING !!!

1. Horsepower

YOU CAN LOSE UP TO 3% OF YOUR HP BY RE-SLEEVING A PLATED CYLINDER.
2. Money

Re-sleeving a cylinder can actually cost more than re-plating.

3. Porting

Re-sleeving a cylinder will lose any custom porting that you currently have.

4. Engine Life

Cast iron or steel sleeves wear up to ten (10) times faster than a plated cylinder.

5. Engine Configuration

Cast Iron or steel sleeves can slip & turn in the bore. If this happens your cylinder is worthless.

6. Lubricity

Cast iron or steel sleeved cylinders don't have the lubricity of a plated cylinder.

7. Cooling Properties

Cast iron or steel sleeved cylinders don't transfer heat as efficiently as a plated cylinder.

8. Engine Design

Your cylinder was plated in the first place for a reason...........POWER & PERFORMANCE! Keep that power & performance by replating it with U.S. Chrome.