xs11 Performance mods

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  • joep7
    XSive
    • Jun 2013
    • 98
    • Grand Rapids, Mich.
    #31
    Originally posted by crazy steve
    One issue with a chain conversion is there isn't enough room to run a decent-sized front sprocket without extensive mods to the engine cases. I believe a 14 tooth is about it, and chain life will suffer.
    Hmm alright. I'll look into what the guy I am copying did. Also reading the other posts on here by xschop.
    72 Cb900 C
    72 Cb350 Track Bike
    86 Rebel 450
    79 XS11 Standard

      Comment

      • joep7
        XSive
        • Jun 2013
        • 98
        • Grand Rapids, Mich.
        #32
        Doing some pricing and research regarding the chain swap and other bits. Would the swinger and front end from an fj1100 or 1200 work on an xs11. Would it be much of an upgrade front end wise?
        72 Cb900 C
        72 Cb350 Track Bike
        86 Rebel 450
        79 XS11 Standard

          Comment

          • bikerphil
            Master of XSology
            • Jan 2008
            • 8635
            • South Flori-DUH
            #33
            I doubt the swingarm would be anywhere even close to being able to work. The FJ11 front end will fit with some modification, the forks are beefier and set further apart than the XS, but they are still damper rod forks.
            2H7 (79) owned since '89
            3H3 owned since '06

            "If it ain't broke, modify it"

            โ˜ฎ

              Comment

              • James England
                XS-XJ Super Guru
                • Oct 2010
                • 3039
                • North of England
                #34
                Originally posted by joep7
                I think I'll avoid the nos
                Why? Forget chain drives and big bores. You'll get negligible performance increase and it will cost a fortune.

                I had 175bhp on my XS thanks to http://www.noswizard.com/
                XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.

                  Comment

                  • joep7
                    XSive
                    • Jun 2013
                    • 98
                    • Grand Rapids, Mich.
                    #35
                    Originally posted by James England
                    Why? Forget chain drives and big bores. You'll get negligible performance increase and it will cost a fortune.

                    I had 175bhp on my XS thanks to http://www.noswizard.com/
                    Im not doing the big bore. The chain drive will not cost me much to make. We have a FARO arm at the shop and CNCs to do the mill work. Im more doing it to learn a lot more about Solidworks and running a CNC.
                    72 Cb900 C
                    72 Cb350 Track Bike
                    86 Rebel 450
                    79 XS11 Standard

                      Comment

                      • joep7
                        XSive
                        • Jun 2013
                        • 98
                        • Grand Rapids, Mich.
                        #36
                        What about the fzr front end?
                        72 Cb900 C
                        72 Cb350 Track Bike
                        86 Rebel 450
                        79 XS11 Standard

                          Comment

                          • James England
                            XS-XJ Super Guru
                            • Oct 2010
                            • 3039
                            • North of England
                            #37
                            Originally posted by joep7

                            Was wondering if anyone knows of any good bore upgrades. Id like to keep the sleeves in it and just go up a few mm with oversized rings. But I wondered if maybe a 650/750 twin or some of the bigger triples had pistons that would swap with a bigger bore????
                            You not doing this aspect of things now?
                            XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.

                              Comment

                              • joep7
                                XSive
                                • Jun 2013
                                • 98
                                • Grand Rapids, Mich.
                                #38
                                Originally posted by James England
                                You not doing this aspect of things now?
                                I decided against e big bore. Just got it honed and I am replacing rings for now. Sounded like from you and others that the bore would not increase hp much.
                                72 Cb900 C
                                72 Cb350 Track Bike
                                86 Rebel 450
                                79 XS11 Standard

                                  Comment

                                  • WMarshy
                                    XS-XJ Guru
                                    • Apr 2009
                                    • 2402
                                    • Mexico NY
                                    #39
                                    Originally posted by joep7
                                    What about the fzr front end?
                                    Anything is possible, your only limitation is your skills and resource$. Not many people have gone to moderen inverted forks. The most popular upgrade for the front end is FJ forks. Do a search and you will find the details for the swap.
                                    '79 XS11 F
                                    Stock except K&N

                                    '79 XS11 SF
                                    Stock, no title.

                                    '84 Chevy K-10 "Big Blue"
                                    GM 350, Muncie SM465, NP208, GM 10 Bolt with 3.42gears turnin 31x10.5 Baja Claws

                                    "What they do have is an implacable, unrelenting presence and movement that bespeaks massive power lurking behind paint and chrome. They don't wail like a screeching ninja, the don't rumble like a harley. They just growl like a spactic, stressed out badger waiting to rip your face off and eat your soul." Trainzz~RIP~

                                      Comment

                                      • crazy steve
                                        XS-XJ Guru MODERATOR
                                        • Jan 2009
                                        • 7932
                                        • Beautiful outer Yelm, WA
                                        #40
                                        Here's the FJ fork conversion...

                                        404 Not Found
                                        http://www.xs11.com/forum/showthread.php?t=25786
                                        Fast, Cheap, Reliable... Pick any two

                                        '78E original owner - resto project
                                        '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
                                        '82 XJ rebuild project
                                        '80SG restified, red SOLD
                                        '79F parts...
                                        '81H more parts...

                                        Other current bikes:
                                        '93 XL1200 Anniversary Sportster 85RWHP
                                        '86 XL883/1200 Chopper
                                        '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
                                        Cage: '13 Mustang GT/CS with a few 'custom' touches
                                        Yep, can't leave nuthin' alone...

                                          Comment

                                          • joep7
                                            XSive
                                            • Jun 2013
                                            • 98
                                            • Grand Rapids, Mich.
                                            #41
                                            Originally posted by crazy steve
                                            Here's the FJ fork conversion...

                                            http://www.xs11.com/forum/showthread.php?t=25786
                                            Thanks Steve
                                            72 Cb900 C
                                            72 Cb350 Track Bike
                                            86 Rebel 450
                                            79 XS11 Standard

                                              Comment

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