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  1. Replies
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    We don't make ant screw driver adjusting...

    We don't make ant screw driver adjusting tensioners. Ours have APE on them also.
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    3,532

    Let me clear something up here...What Web means...

    Let me clear something up here...What Web means by "drop in" cams is they will work with stock valve springs and pistons. Non drop ins will require valve pocket machining or aftermarket pistons, and...
  3. First thing you need to do is make sure it is not...

    First thing you need to do is make sure it is not already twisted. We have 18mm rod long enough to fit through all four rods. If it won't go through all four, it is twisted.

    You can also check...
  4. Oil ring expander in one hole was overlapped.

    Oil ring expander in one hole was overlapped.
  5. See if it is only smoking in one hole. You can...

    See if it is only smoking in one hole. You can pull the exhaust and start it up to see.
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    653

    As you can see from the photos, the seat throat...

    As you can see from the photos, the seat throat has to be opened for the oversize valves. You can't just cut the seat larger for the big valve. Then care must be taken to keep sufeciant valve to...
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    GS Big Valve head

    GS400 / 425 head machined for oversize valves 38 / 32. Ready for the porting department for blending. These heads really respond to this mod as, stock, there is quite a restriction where the port...
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    Cutting valve pockets deeper in stock pistons is...

    Cutting valve pockets deeper in stock pistons is risky as they don't have much room in the top to do that. Also keep in mind that milling the head a bunch not only brings the valves closer to the...
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    278

    Yes, the manufacturer. A very nice cast piston. ...

    Yes, the manufacturer. A very nice cast piston. Now we are seeing chinese copies as big bores. They look just like an ART, but don't say ART and the dimensions are off.
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    Yes, they are 400/425, my bad. We do so many of...

    Yes, they are 400/425, my bad. We do so many of these, along with the 69mm big bore cylinders..
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    380

    450 heads in thr Serdi

    Couple of 450 heads in the Serdi, getting the big valve treatment
  12. Here is the 1100/1150 nut. ...

    Here is the 1100/1150 nut. http://gszone.biz/clutches.html
  13. Thread: Valves sizes

    by Big Jay
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    470

    Most of the rocker arm motors have worn guides....

    Most of the rocker arm motors have worn guides. Ours sit 1mm lower in the head.
  14. Replies
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    1,381

    Not common. On Hayabusas they will tack weld the...

    Not common. On Hayabusas they will tack weld the adaptor to the cam.
  15. Most of those old rockerarm heads need guides. ...

    Most of those old rockerarm heads need guides. Also back then they all had small seat throats. They will really wake up if the seat throats are bored, then the ports blended to them. We have...
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    Back in the 80s when these bikes were new, there...

    Back in the 80s when these bikes were new, there was one shop that did a tuneup that really woke them up. Whet he was doing was degreeing the cams. The stockers were all over the map. He did a lot...
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    GSzone website makeover

    Check out the new makeover of the GS Suzuki's leading performance parts site. http://gszone.biz/
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    323

    Another big valve GS cylinder Head

    Finishing it up.
    http://www.aperaceparts.com/cylinderheads.html...
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    500

    WE did a fair amount of 1277 cylinder assemblies...

    WE did a fair amount of 1277 cylinder assemblies back in the day when people were building those. They never were as popular as the GSXR1100. This site will have the most Bandit 1200 performance...
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    We use nickel bronze. We won't machine Berryllumn...

    We use nickel bronze. We won't machine Berryllumn in the shop. We supply seats to a lot of the cylinder head shops.
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    Now to the porting dept.

    https://scontent-lax3-1.xx.fbcdn.net/v/t1.0-9/42564429_1451222621682027_1128871306951917568_n.jpg?_nc_cat=105&oh=ed4127b90866d6fcee73f1ada6b5e4fd&oe=5C5C6A6F
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    Let me correct a misconception. MTC pistons do...

    Let me correct a misconception. MTC pistons do not set up loose. In fact they will tell you as tight as .001" I have set them up that tight and no problem. I say that as a warehouse distributor...
  23. We use dots to represent the numbers

    We use dots to represent the numbers
  24. Look around the edge of the pad. You should be...

    Look around the edge of the pad. You should be able to tell. Old V&H cams would be fine.
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    It needs to be 120 link

    It needs to be 120 link
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