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  1. Thread: Which pistons

    by grepper
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    76

    I have a set Cruzinimage pistons on my 75 cb750,...

    I have a set Cruzinimage pistons on my 75 cb750, they are actually pretty darn good. Sure you can get better from say cyclexchange or Ape, but unless your building a race bike you can't beat...
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    Granted I haven't done the laydown on my 81...

    Granted I haven't done the laydown on my 81 cb750, I have on other bikes. I use a bunch of scrap wood to get then engine off the floor and level on it's side. As for the long bolt with the foot pegs,...
  3. If it is an early sandcast model, you really...

    If it is an early sandcast model, you really don't want to chop it. Any other year sure, but the first run cb750s are highly collectable and can catch high dollar.

    Here's an ebay link were one...
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    Be careful putting it together. The mistake that...

    Be careful putting it together. The mistake that leads them breaking is trying to tighten one of the bolts all the way, do a little bit on each in a cross pattern till all of them are tightened down.
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    1981 Honda CB 750 K 4? A K4 is a 1974 CB750. ...

    1981 Honda CB 750 K 4? A K4 is a 1974 CB750.

    Either way it's not too hard, I would suggest draining the oil to make it lighter. Also take the oil filter off as it sticks out a bit.

    I just...
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    The frames are essentially the same, but have...

    The frames are essentially the same, but have different tabs as seats, rear fender, signals, and tanks are different and mount differently.
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    153

    The idle adjustment is under the carbs, I think...

    The idle adjustment is under the carbs, I think right in the middle.
  8. Happy New year Sent from my XT1254 using...

    Happy New year

    Sent from my XT1254 using Tapatalk
  9. Replies
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    It should be, I'm actually finishing up on a 81...

    It should be, I'm actually finishing up on a 81 CB 750 K restore. I bought someone's failed project lot of almost 3 bikes, I thought I could build 2 from the lot, but I only had 1 good engine and...
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    If you can't find one, I have an air box. But...

    If you can't find one, I have an air box. But it's missing the door for changing the air cleaner. The rubbers are in OK to poor shape. I could send you what I have for the cost of postage.

    Sent...
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    321

    Unless you enjoy a challenge, going to the stock...

    Unless you enjoy a challenge, going to the stock configuration is always best.

    Sent from my XT1254 using Tapatalk
  12. Replies
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    Sticky: Happy Holidays, found this at Hallmark...

    Happy Holidays, found this at Hallmark todayhttps://uploads.tapatalk-cdn.com/20181207/0b2bc19c9033d5da23dc223a653ac67e.jpg

    Sent from my XT1254 using Tapatalk
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    Best Hallmark find ever

    Just found this at Hallmark while shopping for gifts.https://uploads.tapatalk-cdn.com/20181207/e22d59e355c8cd7d7434dfe733f47bc4.jpg

    Sent from my XT1254 using Tapatalk
  14. Replies
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    Wez, that sucks about your blown head gasket. ...

    Wez, that sucks about your blown head gasket. When I built this engine the oil light came on. Turned out that little pin in the oil pump fell out during assembly, luckily I didn't let it run for...
  15. Thread: Weak Spark?

    by grepper
    Replies
    5
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    412

    The black wire with the white stripe is the hot...

    The black wire with the white stripe is the hot lead. The blue and yellow ones tell the coils when to spark. If you connect directly to the battery you won't be able to to turn the bike off.

    Sent...
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    584

    Wez: Yes for sure. That was a real pain. ...

    Wez: Yes for sure. That was a real pain.

    BTW, I got the rest of the bike together and she runs like a top.
  17. Yes, free parts please

    Yes, free parts please
  18. Thread: Weak Spark?

    by grepper
    Replies
    5
    Views
    412

    A trick I did on my 81 CB750K I did is to put a...

    A trick I did on my 81 CB750K I did is to put a Relay from the Coils to the battery. So that when the coils have power, power comes directly from the battery instead of through all the switches in...
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    Well... I pulled the engine, flipped it upside...

    Well... I pulled the engine, flipped it upside down and "tick!", opened the valve cover and it fell out.
    Thank you veterans for your sacrifice and the day off work.
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    There is a Vermont loophole. You can register...

    There is a Vermont loophole. You can register and get a title for any vehicle through the mail in Vermont without a title. Keep it for a year, then transfer the title to NewYork
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    If you have the stock airbox, use that instead of...

    If you have the stock airbox, use that instead of Pods. It's very hard to get a bike with CV carbs to run right on Pods.
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    584

    I have tried compressed air. The bolt fell down...

    I have tried compressed air. The bolt fell down the cam tunnel. Another thought I have had is to try to flush it out. Maybe get a gallon of kerosene or another kind of solvent and pour it down the...
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    Dropped a bolt on the engine

    So my 81 started to sound like a diesel, I suspected something with the valves. I found the b cam chain tensioner broken. While reassembling I dropped one of the cam sprocket bolts into the engine. I...
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    They were stock on sohc models, but not on the...

    They were stock on sohc models, but not on the dohc models like yours

    Sent from my XT1254 using Tapatalk
  25. Count me in too

    Count me in too
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