250 SL head swap

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racerclam
Posts: 588
Joined: Wed Nov 20, 2013 7:01 am

250 SL head swap

Post by racerclam »

I finally aquires a250 ED head to modify for 250SL use I just had to cut the corner of and trim some fins. Now it has a head with a centered combustion chamber much less prone to detonation . I haven't has a chance to ride it yet it toooo hot here .

Rich
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Darrell
Posts: 316
Joined: Mon Jul 29, 2013 7:09 am
Location: Vancouver Island, BC

Re: 250 SL head swap

Post by Darrell »

Compared to what I remember is required to adapt a Suzuki TS250 head this looks like a path of lesser resistance.

I suppose the engineers meant well when they gave the SL an offset spark plug and combustion chamber. I guess they were hoping to keep the temperature down on the exhaust side of the piston.

Thirty views so far -- and nobody has wondered why the combustion chambers are grooved?
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bchappy
Posts: 448
Joined: Fri Jul 19, 2013 6:46 am
Location: Monument, CO

Re: 250 SL head swap

Post by bchappy »

I wondered about that also. For those that are now interested they are called Torque Grooves and you can see a picture and an explanation on Rich's (racerclam) website http://www.richstaylordporting.com/
Bill Chapman, Monument, CO
Raced and Modified Hodakas in Statesville NC back in the day.
viclioce
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Re: 250 SL head swap

Post by viclioce »

Nice job Rich! How was the cutting done without causing fin breakage? ; D Victor

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racerclam
Posts: 588
Joined: Wed Nov 20, 2013 7:01 am

Re: 250 SL head swap

Post by racerclam »

easily done with die grinder and cut off wheel

Rich
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