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Thread: 350X refresh questions

  1. #76
    Join Date
    Oct 2003
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    Las Vegas, NV.
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    Looks good. Nice & tidy little workspace too!
    Red Rider's Sand Machine Updated 07/23/14

  2. #77
    Join Date
    Oct 2006
    Location
    Utah
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    76
    Thanks!

    I attempted to clean the front brake caliper and ended up ruining the pin seals. They have been saturated in for oil for decades and they finally gave up haha. I’ve since fixed the leaky fork seals but it looks like I need to rebuild the front caliper. Should I mess with what I have or just buy the whole new one off eBay for $65. In leaning towards the new one it comes with pads and everything.
    1985 Honda 350X

  3. #78
    J!m's Avatar
    J!m is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Nov 2024
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    New Haven, CT area
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    190
    It might be worth saving potential aggravation as other failures are discovered… the seller may offer a “core” charge for your old one too.

  4. #79
    Join Date
    Oct 2006
    Location
    Utah
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    76
    Thanks again J!m

    Looks like I need a decompression cable… oye. Where do go for that?

    Also made some new motor mount bushings to replace the busted up stock ones
    Click image for larger version. 

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    1985 Honda 350X

  5. #80
    J!m's Avatar
    J!m is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Nov 2024
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    One of mine is cracked too. Well, mine are stacked nuts but the ones I just got one of those is cracked.

  6. #81
    Join Date
    Oct 2002
    Location
    Northeast
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    17,493
    Quote Originally Posted by rot box View Post
    Thanks again J!m

    Looks like I need a decompression cable… oye. Where do go for that?

    Also made some new motor mount bushings to replace the busted up stock ones
    Click image for larger version. 

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    Honda sells them brand new for about 30$. I bought a dozen (decomp cables) because someday these parts will all be gone.
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  7. #82
    Join Date
    Oct 2002
    Location
    Northeast
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    Quote Originally Posted by rot box View Post
    Making way on the mighty 350X! Where is a good place to get a fuel petcock? Mine is a cheap Amazon one and it’s leaking.. haha.

    Attachment 272051
    I have the parts to rebuild them. I used to list them on Ebay and included the 3mm tap. You have to grind out the rivets and replace them with screws. Far better than the China petcocks.
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  8. #83
    J!m's Avatar
    J!m is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Nov 2024
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    Yep. I bought a new one for my trike as it was missing completely.

    Also, the parking brake cable (also missing from mine) but my throttle cable is fine to continue using.

    I think the parking brake cable I had to scrounge for (NOS) but the parking brake cable is still available as Steve says.

  9. #84
    Join Date
    Oct 2006
    Location
    Utah
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    76
    Sure enough that cable is still available! I would have never dreamed that to be true. Thanks fellas!
    1985 Honda 350X

  10. #85
    Join Date
    Oct 2006
    Location
    Utah
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    76
    Question for you guys, I had the oil cooler removed for sometime. It has drained of oil completely. Do I need to worry about that or just run the engine and add as needed? If that makes sense
    1985 Honda 350X

  11. #86
    J!m's Avatar
    J!m is offline At The Back Of The Pack Arm chair racerFirst time rider
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    That's my plan.

    I would think just sitting it would eventually drain down on its own.

  12. #87
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    J!m is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Question:

    I need some standard rings for my 350X. Either I'll use the 86 piston and jug if its on size, or the 85 one that's out and already confirmed to be on size.

    The main question is what rings should I go with? Are the Honda rings "the best" for a stock piston/bore or are there other options I should consider? Stock are around $50 a set and no-name ones are like $10 a set. Perhaps I should find something in the middle that works as well or better than stock with longer life expectancy? I also know things like Moly coated rings require a hone specific to those coated rings, same as TiN rings or CBN rings... all different requirements. This is stock bore, stock piston and stock hone.

    I want stock and the knee-jerk is just get Honda rings and be done with it, but I wanted to ask the collective before I dump money...

  13. #88
    Join Date
    Aug 2008
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    devore,ca
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    I would stay with the Honda rings if you are using a Honda piston. I'd be more concerned with your plan to use a random piston into a 40 year old bore. Normal practice is to size the bore to the piston that's being used. Weather that stock bore sized cylinder has been running or kicked around in a box for decades, it surely needs to be at least properly honed to get the rings to seat or your just going to end up with a smokey mess at best.
    YAMAHA 450 HYBRID
    85 350X- RED
    85 350x -BLACK
    86 350x-WHITE (with Goki)
    85 250r
    83 atc 70
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    09 yfz 450
    2006 Arctic Cat Prowler
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  14. #89
    J!m's Avatar
    J!m is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Yes, Honda piston and cylinder. I will refresh the hone with a ball hone and cutting oil, like usual, but I will not be sizing the bore.

    I hope to keep the 86 parts on the trike now, but I have another (85) engine in parts, and that cylinder and piston have been measured per the overhaul manual and they are right on size. Minimal skirt scuffing and little carbon buildup too, so hours were apparently low.

    Once my trike is running, I'll be selling off all the surplus parts...

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