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Messages - Olafskii

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Engine / Re: How well does one trust air cooled
« on: October 05, 2013, 10:24:32 PM »
Just saw this post (its 60 days old) but thought I should reply.
My suzuki DR650 is air cooled and it has an oil cooler.  I bought it new and immediately installed a Vapor 'Trip Computer' which includes a cylinder head temperature measurement.  The measurement is done with a thermocouple that sits underneath a spark plug--replaces the normal spark plug washer.  Here is what I found.  The results are for the Suzuki DR650 but could be extrapolated to other air cooled bikes as well.
-Idling for long periods of time does not heat up the engine as much or quickly as one would expect.
-the hottest the engine gets is pulling up long grades at high speed.  The higher the altitude, the hotter the engine runs. 
-to cool the engine when running up a hill, slow down a little. If I'm running up say Bridge Lake Hill at 120, slowing down to 110 has an almost immediate cooling effect. 
-synthetic oil dropped the cylinder head temperature 10 degrees.  Just use a motorcycle compatible oil--JASO rated
-Air temperature has much less effect than one would think.  I've ridden in the Okanogan at 42 degrees and the engine remained relatively cooler than pulling up one of the hills west of Mcbride when the air temperature was 22 degrees.
-dirt on the engine from rain and gravel roads has also not had any noticable effect.

General Discussion / Tuesday Oct 8 Event
« on: October 04, 2013, 09:48:21 PM »
What is wiener roast and 'dock pull'.  Where would this take place?


These were on my yamaha RD400 when I bought it.  $20. 250-960-9630

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Forum Help / October 8th Weiner roast & Dock Pull?
« on: October 04, 2013, 07:27:37 PM »
How does one find out where this event is taking place?  And the protocol? 


Engine / RD400 cylinder base gasket
« on: October 04, 2013, 07:19:22 PM »
Hey guys
I found a nice 1977 yamaha RD 400 in town and am rebuilding the engine.  Both manuals recommend replacing the cylinder base gaskets when re-installing the jugs.  But if the gaskets are OK (paper gaskets--not torn and seem OK), is this really necessary?


Tech Nite / Re: Tuesday Feb 26 Tech night at Parker's
« on: February 24, 2013, 11:05:19 PM »
Where is 'Parkers'?  I'd like to come but don't know where to go.

Olaf Starck

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