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Search results

  1. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    The aftermarket fork pre-load units and the ignition cover arrived today so this weekend should see some changes. The pre-load units were advertised as being for the 81 GSX1100S however, the threads look a bit course when checking with the MKI eyeball so that will need to be checked. The...
  2. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    The aftermarket aluminium fork pre-load units to replace the heavy OEM pre-load units and ignition cover are on the way from Japan this week. Hoping to have them by Friday and work on the cover over the weekend.
  3. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    While the pipes are off it will make it easy to clean them and be ready for installing once the engine is back together. Used the Bug/Tar Gel on a cloth then washed the pipes in hot water with dish washing detergent. They don't look like new but they do look pretty good considering the miles on...
  4. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    With the front collector springs removed there is no need to keep the rear springs, one in all in or one out all out. This has been a good week removing weight from the build, another 1,038 grams lighter. Running Tally = 198.165 kg Muffler springs1 by Max Mutarn, on Flickr
  5. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    The Titanium headers to collector on the Kat are the spring connecting type however, I think they are extra weight. The collector uses a solid mount to the frame so the collector can't move and the headers are bolted to the head so they can't move. My thinking is I don't need the springs that...
  6. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    Looked over the muffler today and there isn't any wiggle room there to remove any metal from the inlet cap. It's spring mounted and cutting it back may weaken it. Plan B is to hog out the ignition timing cover, should be around 70 grams that can be removed from the cover. I have bought a used...
  7. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    I have been looking at the muffler and I think there is some metal that could be trimmed from the inlet end-cap, maybe something like 30-40 grams?
  8. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    Piston number 2 has been shaved and now all four pistons and pins are the same weight at 291.5 grams. Running Tally = 198.279 1197#1 piston 291.5 by Max Mutarn, on Flickr 1197 #2 291.5 by Max Mutarn, on Flickr
  9. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    Piston number three has been shaved and now matches Piston 1 and 4 at 291.5 grams. 1197 #3 291.5 by Max Mutarn, on Flickr
  10. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    Number one piston and pin are the lightest of the set at 291.5 grams, number four piston and pin are the heaviest at 292.6 grams so number four is the first one for a haircut. Used a burr to remove the offending 1.1 grams from number four piston and now it is a match with number one piston and...
  11. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    I removed one of the stock 1135cc pistons today and was pleasantly surprised. The Wiseco 1197 cc piston is 26 grams lighter than the stock 1135 cc piston. So with the four 1197cc pistons being 104 grams lighter and the four 76mm bores being 820 grams lighter than the stock bores the total weight...
  12. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    The combined weights are consistent, each complete piston weight equals the combined weight of each part. It confirms number 1 piston being 2 grams lighter than the rest. A double bonus for the build after pistons 2,3 and 4 have been shaved; 1) balanced piston set 2) piston set will be six...
  13. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    The new Wiseco pins and pin clips are all the same weight, thankfully. Will also weigh them again with all the parts together to confirm weights and how much each piston has to be shaved. 1197 tapered pin by Max Mutarn, on Flickr 1197 pin clip by Max Mutarn, on Flickr
  14. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    Hi jdub6092, I didn't make the ally exhaust flanges, I scored them used from an auction site. I have made a lot of the parts used in this build and if you couldn't find a set of these for sale somewhere, they could be made however, it would be many, many hours of work.
  15. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    The engineering shop have gaped and sized the new rings to the pistons and bore and by luck, each of the ring sets are the same weight. Once the stock pistons and pins have been removed from the engine I'll weigh and compare the stock vs Wiseco parts. Running Tally: 198.165 kg. 76mm set1 by...
  16. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    Yes, I will be weighing each part to ensure matching weights for each complete piston assembly. It will be interesting to compare the weights of the tapered Wiseco pins to OEM pins. The crank is staying in place so there wont be any balancing at this time, the engine has been running smooth so...
  17. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    The stock pistons are still attached to the conrods so no weights for them yet, will try to weigh them over the weekend.
  18. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    Weighed the 76mm pistons today and three of them are 216 grams and one is 214 grams. Time to get out the wet/dry oxide paper and the glass plate and get all the weights to match up. Another 6 grams off. 76 mm piston1 by Max Mutarn, on Flickr 76mm Piston2 by Max Mutarn, on Flickr
  19. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    Number 4 sleeve has been replaced with a new sleeve and machined to suit. I was hoping there would be some weight reduction going from 74 mm bore to 76mm bore and there was, a lot! The stock barrel with stock 74mm bore weighed 8080 grams, the same barrel with 76 mm bore weighs 7260 grams...
  20. Shin-Ken 1074

    1981 GSX1100 Katana Based Project

    Picked up the head and barrel from the engineering shop today. The head is looking pretty good now with its new 5 plane seats, ground valves, new valve guides, new valve stem seals, skimmed head face and the head finished in black gloss ceramic coating. 1197 Head1 by Max Mutarn, on Flickr...
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