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Valves nice and bent, just the way I like them... :mad:

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  • #31
    Hi DownShift, just wondering if you've also checked your exhaust valves for damage as in your 2nd and 3rd photos, there are obvious marks on the valve heads from piston crown contact.
    79 SF Special W/ Stock all original motor @ 384,000klms
    Stock exhaust, stock airbox, XJ sump, 78E carbs, Xs1100RH seat, Bosch superhorns, 5/8ths front M/c, braided lines, sintered SBS pads, drilled discs, progressive springs, 8" 50w HID headlight 4300K, 2 x 50w HID spiral driving lights, KONI shocks, Spade fuse box
    *Touring mode - Plexistar 2 screen, Gearsack rack & bag & saddlebags, homebuilt towbar
    *"The Keg"- UC torana hubs, XS11 discs, Tokico 4 spot calipers

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    • #32
      Originally posted by Eveready1100 View Post
      Hi DownShift, just wondering if you've also checked your exhaust valves for damage as in your 2nd and 3rd photos, there are obvious marks on the valve heads from piston crown contact.
      I went just bought a whole new head that is in working order.

      Question about the head though, there is a lot of carbon build up in the #1 exhaust port. Looks like a bbq grill in there. Should that be cleaned out and if so, how?

      Is there any other areas that should be cleaned or touched up prior to installing the new head?
      78 E - 2to1 exhaust, dynatek coils, special headlight [SOLD!]
      79 F - gas tank refurb, headgasket change, straight pipes, late model carbs, virago lowering shocks, special headlight and gauges, TC fuse block, GSXR-1100 carbs (WIP)


      "May my tires not fail me, nor my engine grow cold"

      Comment


      • #33
        Attach a wire brush to your grinder or drill, use some brake cleaner and have a go at it. Carbon should come off fairly easy. Dry it off, check your valve lash, swap the pucks, and drop that head on.
        1979 XS1100F
        2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

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        • #34
          Also remember not to have the cylinder head on a flat bench turning the cams.
          1979 XS1100F
          2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

          Comment


          • #35
            Originally posted by IanDMacDonald View Post
            Attach a wire brush to your grinder or drill, use some brake cleaner and have a go at it. Carbon should come off fairly easy. Dry it off, check your valve lash, swap the pucks, and drop that head on.
            Even in the ports where the exhaust bolts to the head? I looked in through that opening and saw the valve stem and a lot of carbon.
            78 E - 2to1 exhaust, dynatek coils, special headlight [SOLD!]
            79 F - gas tank refurb, headgasket change, straight pipes, late model carbs, virago lowering shocks, special headlight and gauges, TC fuse block, GSXR-1100 carbs (WIP)


            "May my tires not fail me, nor my engine grow cold"

            Comment


            • #36
              Originally posted by D0wn5h1ft View Post
              I went just bought a whole new head that is in working order.

              Question about the head though, there is a lot of carbon build up in the #1 exhaust port. Looks like a bbq grill in there. Should that be cleaned out and if so, how?

              Is there any other areas that should be cleaned or touched up prior to installing the new head?
              If it were me, I'd think about new valve seals for ~$2.00/each - cheap compared to other expenses, like head gasket.

              So, while the valves are out of the head, a light lapping is icing on the cake.

              Of course you need the valve spring compressor tool to do this.
              -Mike
              _________
              '79 XS1100SF 20k miles
              '80 XS1100SG 44k miles
              '81 XS1100H Venturer 35k miles
              '79 XS750SF 17k miles
              '85 Honda V65 Magna ~7k miles
              '84 Honda V65 Magna 48k miles (parts bike)
              '86 Yamaha VMAX 9k miles

              Previous: '68 Motoguzzi 600cc + '79 XS750SF 22k miles +'84 Honda V65

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              • #37
                I'm with the Radioguy, change those seals
                Nick

                1979 XS11 F,Yamaha fairings w/hard bags, TC's fuse box, K&N air filter

                1982 Virago 750 (it's alive!)

                1979 XS 11 F, Windjammer IV, Samsonite luggage cases(another rescue)

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                • #38
                  Originally posted by Radioguylogs View Post
                  If it were me, I'd think about new valve seals for ~$2.00/each - cheap compared to other expenses, like head gasket.

                  So, while the valves are out of the head, a light lapping is icing on the cake.

                  Of course you need the valve spring compressor tool to do this.
                  My plan was to leave the valves and everything in the head because I'm not confident enough in my abilities to not jack it up. I think the engine gasket kit that is coming in today includes valve stem seals if that's what you're talking about.

                  This is the kit I got:

                  http://www.oldbikebarn.com/XS1100-At...ine-Gasket-Set
                  78 E - 2to1 exhaust, dynatek coils, special headlight [SOLD!]
                  79 F - gas tank refurb, headgasket change, straight pipes, late model carbs, virago lowering shocks, special headlight and gauges, TC fuse block, GSXR-1100 carbs (WIP)


                  "May my tires not fail me, nor my engine grow cold"

                  Comment


                  • #39
                    I advised Gabe to buy a complete head and drop it on to save machine shop expenses, etc., if he were to take it in. He does not have the valve spring tool, etc., to remove valves, etc. It was cheaper than buying valves, etc.

                    When I did mine, I did put new oil seals, etc., in. I used my head because of the flow bench port & polish done to it. Otherwise, I woulda bought a head off Greg and been done with it. If you did take it into the shop, they would have cleaned the valves, head, exhaust ports, etc. However, that woulda come with a price.

                    To do it all over again, I would have saved machine shop costs and borrowed a valve tool and done everything on my own.
                    1979 XS1100F
                    2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

                    Comment


                    • #40
                      Originally posted by IanDMacDonald View Post
                      Attach a wire brush to your grinder or drill, use some brake cleaner and have a go at it. Carbon should come off fairly easy. Dry it off, check your valve lash, swap the pucks, and drop that head on.
                      Would not use any type of wire wheel to remove carbon off aluminum.
                      I would instead, soda blast them. If you have a compressor, worth spendin' the fifty bucks at an automotive paint store for the gun. The commercial type soda used if a bit courser than the Arm&Hammer type at the grocery store, but it WILL work, just gotta blast a bit longer.

                      Then you also have a quick spark plug cleaner if making any jetting changes.

                      The local powder-coating outfit here sells me bout #30 for $5 I put in a closed 3gal. looking metal tin with a lid so it don't absorb moisture. Also handy for other uses, blowing rust off, paint, whatever.
                      Last edited by motoman; 06-05-2014, 01:38 PM.
                      81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

                      Comment


                      • #41
                        Originally posted by D0wn5h1ft View Post
                        I think the engine gasket kit that is coming in today includes valve stem seals if that's what you're talking about.

                        This is the kit I got:

                        http://www.oldbikebarn.com/XS1100-At...ine-Gasket-Set
                        Yep the valve stem seals are in that kit.

                        You can borrow my valve spring compressor tool if you wish. It's the $35 model from Pants-N-More.

                        If you're intimidated, I'd understand. It is more parts to get apart and back together. It's not hard or risky, though.
                        -Mike
                        _________
                        '79 XS1100SF 20k miles
                        '80 XS1100SG 44k miles
                        '81 XS1100H Venturer 35k miles
                        '79 XS750SF 17k miles
                        '85 Honda V65 Magna ~7k miles
                        '84 Honda V65 Magna 48k miles (parts bike)
                        '86 Yamaha VMAX 9k miles

                        Previous: '68 Motoguzzi 600cc + '79 XS750SF 22k miles +'84 Honda V65

                        Comment


                        • #42
                          Also remember not to have the cylinder head on a flat bench turning the cams.
                          Actually, if the cams are fitted to the head, chances are that at least one valve is open, so you don't have to actually turn the cams to bend a valve. Just sitting it flat on a bench with a valve open can bend it. They're that soft!

                          Also remember that when turning the cams to check valve clearances, only have one cam fitted at a time to avoid valves clashing.
                          79 SF Special W/ Stock all original motor @ 384,000klms
                          Stock exhaust, stock airbox, XJ sump, 78E carbs, Xs1100RH seat, Bosch superhorns, 5/8ths front M/c, braided lines, sintered SBS pads, drilled discs, progressive springs, 8" 50w HID headlight 4300K, 2 x 50w HID spiral driving lights, KONI shocks, Spade fuse box
                          *Touring mode - Plexistar 2 screen, Gearsack rack & bag & saddlebags, homebuilt towbar
                          *"The Keg"- UC torana hubs, XS11 discs, Tokico 4 spot calipers

                          Comment


                          • #43
                            Is there any way after removing the oil pan/sump to reach up with a plastic bar and secure/wedge the chain into the crank sprocket to secure and prevent it from lowering down and thus jumping a toothe when all is attempted to reassemble?

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