juanito xs Posted March 19, 2008 Share Posted March 19, 2008 who may know what type of carbs can be change on a xs400? what alternatives to make it faster? Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 21, 2008 Moderator Share Posted March 21, 2008 who may know what type of carbs can be change on a xs400? what alternatives to make it faster? why upgrade carbs? to tune a bike it needs heads gas flowed, free flow exhaust, hotter cams and then you might consider changing carb to maybe a slide carb which gives a snappier response for racing purposes. usually to go faster, it depends where you ride. around town lower gearing at the expense of top speed, higher top speed fit a fairing and may be raise gearing slightly. twisties, get decent tyres to maintain higher speeds on corners (depending on rider ability) I have seen off modern 400's on the lanes of cheshire riding round the out side of racing leather clad pocket rockets, but i reckon it was rider experience that held them back! straight roads it was harder but it was all part of the fun! different again for track racing. Link to comment Share on other sites More sharing options...
juanito xs Posted March 21, 2008 Author Share Posted March 21, 2008 why upgrade carbs? to tune a bike it needs heads gas flowed, free flow exhaust, hotter cams and then you might consider changing carb to maybe a slide carb which gives a snappier response for racing purposes. usually to go faster, it depends where you ride. around town lower gearing at the expense of top speed, higher top speed fit a fairing and may be raise gearing slightly. twisties, get decent tyres to maintain higher speeds on corners (depending on rider ability) I have seen off modern 400's on the lanes of cheshire riding round the out side of racing leather clad pocket rockets, but i reckon it was rider experience that held them back! straight roads it was harder but it was all part of the fun! different again for track racing. Link to comment Share on other sites More sharing options...
juanito xs Posted March 21, 2008 Author Share Posted March 21, 2008 why upgrade carbs? to tune a bike it needs heads gas flowed, free flow exhaust, hotter cams and then you might consider changing carb to maybe a slide carb which gives a snappier response for racing purposes. usually to go faster, it depends where you ride. around town lower gearing at the expense of top speed, higher top speed fit a fairing and may be raise gearing slightly. twisties, get decent tyres to maintain higher speeds on corners (depending on rider ability) I have seen off modern 400's on the lanes of cheshire riding round the out side of racing leather clad pocket rockets, but i reckon it was rider experience that held them back! straight roads it was harder but it was all part of the fun! different again for track racing. thanks am not only looking to go faster but an option to replace the original carbs since I dont have them and its been hard to get a good set. What type other than original is the most suitable to replace the ones I dont have now? Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 21, 2008 Moderator Share Posted March 21, 2008 thanks am not only looking to go faster but an option to replace the original carbs since I dont have them and its been hard to get a good set. What type other than original is the most suitable to replace the ones I dont have now? I would think mikuni VM's http://www.mikuni.com/fs-products_guides.html Link to comment Share on other sites More sharing options...
78special Posted March 24, 2008 Share Posted March 24, 2008 I would think mikuni VM's http://www.mikuni.com/fs-products_guides.html I have a set I could sell you factory ones. Link to comment Share on other sites More sharing options...
juanito xs Posted March 25, 2008 Author Share Posted March 25, 2008 I have a set I could sell you factory ones. how much? am in NYC, shipping cost ? Link to comment Share on other sites More sharing options...
78special Posted March 25, 2008 Share Posted March 25, 2008 how much? am in NYC, shipping cost ? Im not sure?! Dont know what they are worth to you.....?? I have seen sets go for as little as 110.00 up to 275.00 I think either price is cheap let me check around and you let me know what you wanna pay. They arent going anywhere. Link to comment Share on other sites More sharing options...
bralkan Posted March 25, 2008 Share Posted March 25, 2008 http://cgi.ebay.com/80-YAMAHA-XS400-XS-400...1QQcmdZViewItem Link to comment Share on other sites More sharing options...
juanito xs Posted March 25, 2008 Author Share Posted March 25, 2008 Im not sure?! Dont know what they are worth to you.....?? I have seen sets go for as little as 110.00 up to 275.00 I think either price is cheap let me check around and you let me know what you wanna pay. They arent going anywhere. I can spend around $50-$100 buck for ti Link to comment Share on other sites More sharing options...
bralkan Posted March 25, 2008 Share Posted March 25, 2008 I can spend around $50-$100 buck for ti I posted a link to an ebay auction for carbs for 45. Link to comment Share on other sites More sharing options...
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