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Author Topic: My RM144cc Project!  (Read 12183 times)

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Offline yenko572

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My RM144cc Project!
« Reply #30 on: March 10, 2013, 06:32:35 PM »
Quote from: 2T Institute on March 10, 2013, 06:35:25 PM
The pre 04 RM's have a 105mm rod the later models a 110mm rod. They have a similar length cylinder but different cases. With the 110mm rod you will probably need a spacer plate.

Rod length RM125

99-03=102mm rod

04-10=110mm rod

This would probably not be a problem, my NEW crank(04-10) have the same stroke as my OLD one(-02). My new piston fits just the newer rod length(110mm) couse it got a higher wristpin locaction. I dont think Suzuki adjusted the case height, because newer cylinders can be used on older RM's! Biggest differences of the newer/older cylinders is most porting and exhaust valve parts...  8)
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline yenko572

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My RM144cc Project!
« Reply #31 on: March 27, 2013, 09:25:34 PM »
I got my cylinder today!!! :P Now it's time to make clearence for the bigger piston in the crankcase! And also check the exhaust port clearence..

« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline _X_

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My RM144cc Project!
« Reply #32 on: March 28, 2013, 12:02:27 AM »
cool
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline yenko572

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My RM144cc Project!
« Reply #33 on: May 26, 2013, 08:00:34 PM »
Quote from: 2T Institute on March 10, 2013, 06:35:25 PM
The pre 04 RM's have a 105mm rod the later models a 110mm rod. They have a similar length cylinder but different cases. With the 110mm rod you will probably need a spacer plate.

Need to give you a confession 2T Institute! :<img src=" title="Roll Eyes" class="smiley"> I was wrong and YOU were right about the cases.. The pistons have the same wrist pin height and fits 01-08 but the newer case(04-) has a the crankshaft center lowered 8mm.. I thougt Suzuki just changed the pistons and the rods, which had been easier but they molded a new crank case instead..  :-[ Still dont know why wiseco stample there rm125 pistons 04-08, instead of 01-08.. :<img src=" title="Roll Eyes" class="smiley">

The longer rod didnt fit my engine so I ordered a wiseco 102mm rod from BTO sports.. The engine is now ready and I'm looking forward to a start it and test ride..  8)

Clearence was made in the cases and on the exhaust valve. The cylinder is ported and raised with double gaskets and the cylinder head is lathed and lowered in the cylinder. The squish area is modified and the compression is lowered a little bit.. Built for mid-top end power!

Here it is, 144cc of Suzuki Love!  :P
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline yenko572

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My RM144cc Project!
« Reply #34 on: May 26, 2013, 08:08:09 PM »
Installed the engine in the frame and put the front fork on too.. Bought some new plastics (03-08)..

« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline TotalNZ

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My RM144cc Project!
« Reply #35 on: May 26, 2013, 08:54:17 PM »
Very nice project, what did you set the squish at?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline motoman356

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My RM144cc Project!
« Reply #36 on: May 30, 2013, 07:05:09 AM »
Quote from: yenko572 on May 27, 2013, 03:00:34 AM
Quote from: 2T Institute on March 10, 2013, 06:35:25 PM
The pre 04 RM's have a 105mm rod the later models a 110mm rod. They have a similar length cylinder but different cases. With the 110mm rod you will probably need a spacer plate.

Need to give you a confession 2T Institute! :<img src=" title="Roll Eyes" class="smiley"> I was wrong and YOU were right about the cases.. The pistons have the same wrist pin height and fits 01-08 but the newer case(04-) has a the crankshaft center lowered 8mm.. I thougt Suzuki just changed the pistons and the rods, which had been easier but they molded a new crank case instead..  :-[ Still dont know why wiseco stample there rm125 pistons 04-08, instead of 01-08.. :<img src=" title="Roll Eyes" class="smiley">


i can answer this. go ahead ask me how i know? haha well i had an 04 i raced back in 07. i did the first top end and immediately had issues. very low on power( but i somehow rode it faster) and the spark plug kept coming loose. well i tore it apart and the piston was slapping the head. there was ring on the piston from it. i put it side by side and it stood a few mm's taller than the OP. it was also domed instead of flat. so that being the case the piston profile is different 04-08 vs 01-03.  but bore is the same
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline beaner

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My RM144cc Project!
« Reply #37 on: May 30, 2013, 05:25:53 PM »
That's true. 04+ is a flat top, and the previous gen was domed. The shop ordered me a 03 piston by mistake  and it was domed.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Ontario, Canada

Offline yenko572

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My RM144cc Project!
« Reply #38 on: June 11, 2013, 07:41:22 PM »
It's going forward!  8)
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline yenko572

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My RM144cc Project!
« Reply #39 on: June 11, 2013, 08:05:36 PM »
Ignition system installed with the "BHP spark amplifier"... Fixed my carb too, new jets, new o-rings and new hoses..
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline yenko572

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My RM144cc Project!
« Reply #40 on: June 11, 2013, 08:11:17 PM »
Mounted the footpegs with new pin bolts, got the rear brake lever refreshed and installed..
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline yenko572

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My RM144cc Project!
« Reply #41 on: June 11, 2013, 08:13:47 PM »
Bought some flex levers for it.. Not brand new, but they were pretty cheap!  ;D
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline yenko572

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My RM144cc Project!
« Reply #42 on: June 16, 2013, 10:22:23 PM »
Some pics from today.. Swingarm linkage and rear suspension installed.. Pipe restored and installed.. Rear brake master cylinder and calipter installed too..




« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline _X_

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« Reply #43 on: June 16, 2013, 10:32:30 PM »
lets go yenko its summer already.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline TMKIWI

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My RM144cc Project!
« Reply #44 on: June 17, 2013, 07:48:34 AM »
Looking good.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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If you don't fall off you are not going hard enough
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