valve

  1. Stangrcr1

    HS50 valve clearance

    I was looking at a pdf of an old Tecumseh manual and it called for .004" valve lash on the intake and .010" on the exhaust. Is this right? Seems like a lot on the exhaust side.
  2. Quik01ss

    gx160 intake valve seal??? help

    Guys got my gx160 clone head 14cc comparing it to my pred 212cc head the pred head had a valve seal but on the gx160 you can't use it ..... Any info or help
  3. vwfan79

    valve train parts and misc. items

    I'm cleaning the garage getting ready for a move and figured I would offer up these extra parts I have. Not looking to make a bunch of money just cover shipping and maybe pocket a couple dollars. I have put prices on everything as required but if you see something you can use pm me and we will...
  4. traxxasislife

    Predator 212 Valve Failure

    A friend of mine was riding my Dirt Bug with a modded Predator, not pushing it too hard (4600 rpm) when the was a pop then it locked up and had no compression. After tearing it down, the culprit was the intake valve had failed. Beware of this issue, i was running stock valves with 18lb springs...
  5. thebronc4019

    H35 Exhaust Valve

    I am rebuilding a Tecumseh H35 and ordered parts almost 2 months ago from a large on-line supplier. The order was delayed because they were waiting for the above-mentioned exhaust valve from the manufacturer. I was informed today that they can supply all of the other parts I ordered but will not...
  6. M

    Valve Keeper

    Does anyone have one of these they would be willing to mail me? I cant seem to locate any for the predator 212CC. I only need one side of the keeper I have the other 50% of it. Thanks
  7. M

    Predator Valve Cover Breather

    Anyone know where I can buy on that fits the existing hold in my valve cover? Is it a 9MM or should I get the 12MM? I see them both for sale. Can someone please let me know which one fits best. Thanks in advance
  8. F

    Valve Cover

    So the hose thats on the valve cover i would asume is for a vacume of some sort bu Im not sure.. Since I removed the old intake where done this hose hook up to now?
  9. boostdoctor

    maximum valve size on stock bore?

    I'm ready for some more power on my 212 Predator. I was curious of the maximum valve size that could be run with the stock 2.756 bore? In other words how big of a valve can I physically fit using the stock bore? thanks in advance.
  10. J

    HS50 valve springs

    Does anyone out there know what valve springs to use to prevent valve float when removing the governor on an HS50. A billet rod is a given, but I keep reading about valve float at higher rpm's, but no one is specific about what springs to use, or where to get them...
  11. mini drag bike

    valve lash

    Hey guys, i got a 4 hp clone and im not sure if the valve lash should be set at .002 for exhaust and .003 for intake.
  12. 125ccCrazy

    what's the best 420cc big valve combo???

    what is the biggest/best combo of intake and exhaust valves that will work in a 420 head without any welding??? I see Parsons have 40mm int and 33mm exhaust head ready to bolt on as does NR I believe but 7mm seems like a huge difference in valve sizes....I would think 40/35 would be a better...
  13. cheezy1

    Big valve Honda head 32mm

    Like the title says. 14cc big valve Honda head. It has 32mm intake and 28mm exhaust. The ports were opened up on both sides and the pockets were also opened up. There is epoxy in the areas where it needed opened up past factory limitations. It has the stainless valve but no springs or retainers...
  14. misfit

    Clone valve job...I hope.

    While looking around for a big valve head for my Animal I realized Ive built alot of motors big and small but never did a valve job, always take the head(s) to the shop or got by with lapping and hoping. I havent found a cheap big valve head and kinda want to do the work myself to learn more...
  15. Stephen115

    Dual Valve spring compressor tool

    Anyone have any home remedies for installing these bad boys? C-clamp isn't doing it for me and I'd rather not spend the money for the tool.
  16. S

    valve springs

    Looking for a good little spring measuring tool that reads pounds...perfect ones on ebay but they are for car springs..300 lbs plus...I honestly don't know how many lbs are on these little subaru springs are but it can't be near that...so is there a good measuring tool you guy's use..? thanks...
  17. Stephen115

    GX160 or Predator big valve head

    My buddy has one of the predator big valve heads he wants to trade me for my gx160 head. Is this worth the trade? I currently am using the gx160 for higher compression. Will the valve train all transfer over, springs, push rods? Thank you SJ
  18. 93notch408

    420 pred big valve head

    i have a big valve 420cc predator head for sale...it has been milled ported and polished and has a 38mm valve seat cut and ready for a big valve! the ex side is cut for a 34mm the head is from stoney creek motorsports in belleville michigan im asking $175 for it since its bare with no valves...
  19. Stangrcr1

    valve lash

    Just checked the valve lash on the 5hp I am rebuilding and it comes a little tight on the intake at .003". Check chart says .005" to .007". Exhaust is perfect at .010". Is it better to grind a little off the lifter or the valve stem?
  20. S

    Valve guide

    When installing valve Guides I am certain that the clip side faces toward to rockers if one is places backwards can this cause oil to leak into the port? I think I received a head with a backwards valve guide installed
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