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Author Topic: Building a 1988 Suzuki RM250 engine  (Read 20425 times)

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Offline sandblaster

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Building a 1988 Suzuki RM250 engine
« on: November 04, 2015, 08:07:03 AM »
Ok... This one is a little older then we typically deal with and we already know that parts are going to be a bit more difficult to find.
But so what, the customer wants it done so we will get something good to ship him :-)

First things first, get her clean..

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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #1 on: November 04, 2015, 08:07:34 AM »
Right off the bat, this one has a few issues..





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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #2 on: November 04, 2015, 08:08:02 AM »




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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #3 on: November 04, 2015, 08:08:53 AM »




Gears are going to be a issue..

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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #4 on: November 04, 2015, 08:10:03 AM »


Uuuuggghhhh!!!



In the mean time the customer sent us two additional engines for parts and I bought another engine to help out..

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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #5 on: November 04, 2015, 08:11:02 AM »
Gotta get parts clean to inspect..



Before



After


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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #6 on: November 04, 2015, 08:11:24 AM »
And this just showed up today :-)

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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #7 on: November 25, 2015, 03:17:50 AM »
Got the crank split and it is now ready for clean up

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Offline tobys 2 strokes

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Re: Building a 1988 Suzuki RM250 engine
« Reply #8 on: November 25, 2015, 06:48:11 AM »

way to make use of free usps boxs! :-D
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Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #9 on: November 25, 2015, 06:51:30 AM »
OOPS!
Yeah... I told Jason not to do that again  :-o
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #10 on: December 09, 2015, 08:37:31 AM »
Magnesium looks great vapor blasted



But ya gotta paint it or your gonna have issues..

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Offline swordcombat

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Re: Building a 1988 Suzuki RM250 engine
« Reply #11 on: December 09, 2015, 09:43:10 AM »
Just wondering , why must magnesium be painted?
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Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #12 on: December 09, 2015, 02:44:30 PM »
It will corrode badly...
Here is the high brow explanation;

http://www.totalmateria.com/Article19.htm
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Building a 1988 Suzuki RM250 engine
« Reply #13 on: December 28, 2015, 12:31:19 PM »
Lapping and prepping the cases..



Ready for main oil passage porting and entry clean up.





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Offline swordcombat

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Re: Building a 1988 Suzuki RM250 engine
« Reply #14 on: December 29, 2015, 06:47:19 AM »
Quote from: sandblaster on December 09, 2015, 02:44:30 PM
It will corrode badly...
Here is the high brow explanation;

http://www.totalmateria.com/Article19.htm

Thanks for that as i was just going to sand and polish mine , also what is lapping?
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