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Old 12-26-2010, 03:08 PM   #91
HeadTrauma
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All else being equal, the individual exhaust ports probably do flow better than a single. The exhaust ports on an '88+ RFVC Honda 600/650 head flow about 90% of what the single intake does. The twin-carb(twin intake ports as well as exhaust) '83-87 engines were some of the strongest runners.
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Old 12-26-2010, 03:40 PM   #92
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i recall the pros on xrs' using the older dual carb head ect. on newer bikes back then
maybe that is an upgrade for my dr650 an sp/dr600 head
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Old 12-26-2010, 04:12 PM   #93
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Better Flow

Well I might be one of the few that can compare the two head to head. This spring my son was on the SP and I on the DR. Son is a good 50lbs lighter than I but the DR walked away pretty easily in a roll on comparison. I think I will stick with the DR Head
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Old 12-26-2010, 04:44 PM   #94
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what year dr?
pre 96 or post?

on the newer dr has more low end the the older

the older dr650 has very big cam next to the newer

any way you cut it its all good man its a DR or SP
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Old 12-26-2010, 05:49 PM   #95
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Dr

Mine is a 2009 DR. I think the SP had more low end and better gear spacing. But the DR just has more stuff once it gets going.

Quote:
Originally Posted by tdrrally View Post
what year dr?
pre 96 or post?

on the newer dr has more low end the the older

the older dr650 has very big cam next to the newer

any way you cut it its all good man its a DR or SP
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Old 12-26-2010, 06:28 PM   #96
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maybe its the gearing?
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Old 12-26-2010, 11:55 PM   #97
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dr head

I think the head may flow better, but the sp carb is crap compared to the bs40. If i go nuts this year I will get the mikuni smoothbore. I have actully been looking at an rmx450 front end as well. I don't know why I am so sick in the head( I should be saving for a new KTM adventure instead of dreaming of a super sp), but you guys started it.
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Old 12-27-2010, 04:02 AM   #98
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i'm looking at a tmx40 pumper for the dr
the forks are still in the planning stage but maybe rm
i like the dr better than the ktm
the dr is paid for
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Old 01-14-2011, 07:10 PM   #99
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dam I guess we were the only ones!!!!!

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Old 01-15-2011, 03:38 AM   #100
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Old 02-08-2011, 06:30 PM   #101
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One last Story

Well in an attempt to keep this thread alive in hopes of finding other SP600 riders one last story.

We were down in Tennessee riding around on some old roads and it started snowing. Well we didnt care and it didnt matter, just another thing to have fun with. We were acting like the fools we were.

We had aquired a bad habit of when the guy that stopped in front of us he would get a (love tap) from our front wheel to his back one. The snow was cold and we were getting cold but what the hell. Dancer Dave stopped in front of me at a stop sign so I gave him a little love tap to his back wheel. Seems my timing was off a little and he had time to take his hands off the handlebars so when I hit him he got thrown back enough he couldnt reach the bars so down he went. Well turn about was fair play and BD Toolman hit me. Well I did say it was cold so when he hit me my hand came off the clutch that was pulled in and in gear so my Sp600 skillfully mounted his 600KLR like the the KLR was in heat. When I finally stopped the front tire was on the motor of the KLR with Dancer Dave under it yelling to get off me you big bastard.
I think BD Toolman laid his bike down real quick to try to help me get the SP off the top of the KLR and our buddy that was still under it when this old lady drives up. I think that was the look on her face trying to figure out how this bad wreck had just happened.

After getting all the bikes upright it took us probably 15 minutes to convince the old lady not to call the police.

Tudelum48 screwed with this post 02-09-2011 at 06:13 PM
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Old 02-09-2011, 08:13 AM   #102
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Old 02-09-2011, 06:46 PM   #103
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It isn't that funny!!! i was the one on the ground and as cold as i ever been in my life.. back then there were no electric clothes or if they were us kentucky boys didn't know anything about them, we wraped up in garbage bags(new ones) we aint dumb just cold.. but those days when the three of us got together we had the time of our lives.. the three of us have ridden together for a life time except the 18 years that our ole big buddy took some time off to do some fishing.. i dont know why.. anyway life is still good and yep i still have the fastest bike!!!
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Old 02-09-2011, 07:12 PM   #104
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just to give you guys some idea just how Tudelum 48 likes his DR650 and we are suppose to be best friends.. yeah right..
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Old 02-11-2011, 07:17 AM   #105
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My DR650 has taken the place of my SP. I got my first taste of dualsport riding since the early 70's (Suzuki TS125) when I bought my SP600 for $800 in 1991. I rode all over the place. Didn't have to load the truck to ride anymore. I even put on a dualsport ride in 1992 in Western MA. One of the earliest and possibly the first in New England in the modern era (what ever that means) Now the dualsport rides have taken off as popular event. I love my DR and take it to as many events as possible. Thanks in part to my 1985 SP600
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