dirtbike killer Posted March 21, 2004 Report Posted March 21, 2004 Well I tryed out the dual 33mm for a while. I thought with the race logic port that it would be the better route, but I was wrong. With the stock duals I got 52 hp on the dyno, with the single 33mm I got 48hp but 10 more hp on the bottom. With the dual 33mm carbs and port job I got 63hp on the dyno, but no power under 6 grand. I had to go back down on my gears because the 33mm's wouldn't pull them right. It was to easy to shift wrong. The bike was quicker in a drag race but sucked everywhere else. My top speed suffered due to going back down on my gears. This time I decided to try the Graydon Proline. A friend of my has one on his bike and it feels faster than my did with the CV. His setup is a little different than mine was, but I had more mods. All I have to say is this thing rocks!! I think the geared down 33mm's were quicker, but not around the track and not far as top speed goes. I have the taller gear back on and it pulls it great! I cant say if its better than the CV was, because I have porting now. But I can say that the shee is the fastest its every been by far, and I will never go back to duals! Quote
Banchetta Posted March 21, 2004 Report Posted March 21, 2004 What about torque comparisons? Can you post the dynoe results?? This is some good info, thanks for sharing it...I'll be testing the stockers, 30's, and some 33's in a few weeks w/ my stroker kit. Its nice to see what affects what.... Quote
dirtbike killer Posted March 21, 2004 Author Report Posted March 21, 2004 Torque was 40.8 @ 7900 rpm for the dual 33mm's, 36.7@ 7000 for the dual stockers, and 36.9 @ 6600 for the single. Two of the dynos are on this site somewhere. This newest one will be up as soon as I can find my camcorder. I also will be doing a dyno on this new single setup. One note is what the power was at 6000 rpm. 35 for the single, 25 for the stock duals, and 13 for the dual 33mm. Quote
Minkia38 Posted March 22, 2004 Report Posted March 22, 2004 damn! that is awesome to know! im glad we have proof now of this, I have really been wondering.... what type of riding do you do? Quote
dirtbike killer Posted March 22, 2004 Author Report Posted March 22, 2004 I do mostly mx and trail. I had a type o on the torque for the 33mm's it was 40.8 not 45.8. I corrected it in the post. Quote
Nighty Posted March 22, 2004 Report Posted March 22, 2004 I just wonder how these same tests would go with a different set of pipes. Many thanks for the info! a 2:1 setup becomes more attractive every minute. Quote
dirtbike killer Posted March 22, 2004 Author Report Posted March 22, 2004 The last test was with Graydon proline pipes. I changed pipes soon after the porting. I didn't notice much of a difference with the T6 pipes after the porting, so I decided to try some different pipes. These new pipes pull a lot better with the porting than the t6's did. Quote
Minkia38 Posted March 22, 2004 Report Posted March 22, 2004 you should try out the rocket pipes man! mucho better than cpi! email me if interested Quote
sredish Posted March 22, 2004 Report Posted March 22, 2004 That's some sweet info. Thanks for giving it to us. I'd be interested to know how the comparison would be with a single 35 thrown in there. The biggest question on the single is "a 33 or a 35". I assume that the power would be fairly similar just a little more up in the powerband. I'd imagine the 33 comes on a little sooner. Thanks again and keep it coming. Quote
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