cam

  1. 661_Minis

    10.5 to 1 compression ratio on a predator 212

    Hello, I’m building a predator 212 non hemi and need advice on achieving a 10.5 to 1 compression ratio, how much should I shave the head? I haven’t measured how deep the piston is in the hole yet because I already took the whole engine apart and I’m waiting on my ring compressor and other parts...
  2. 661_Minis

    10.5 to 1 compression on 212 predator

    Hello, I’m building a predator 212 non hemi and need advice on achieving a 10.5 to 1 compression ratio, how much should I shave the head? I haven’t measured how deep the piston is in the hole yet because I already took the whole engine apart and I’m waiting on my ring compressor and other parts...
  3. 69 Rupp Banchi project

    69 Rupp Banchi project

    engine in progress
  4. TheDullCarbide

    What cam for a CVT?

    What cam should I get for a 6.5 clone with a CVT? The CVT engages at 2200rpm and accelerates at 3900rpm (soon to be 4300rpm). I'm getting a +0.020" billet rod, 8 degree timing key, Mikuni, P+P, and tuned header. I'm curious what cam I should get being I don't rev over 4500rpm. I thought the NR...
  5. Davis

    Gx200 cl216 cam

    I'm building a mild gx200 and am looking at this cam for it. It's a mild motor with a bored carb .010 billet rod arc flywheel #18 pound springs under seat exhaust open air cleaner milled head light porting stock valve train just wondering if anyone has used this cam.
  6. markus

    tecumseh Motorsports cam for the OHH #37536k any info?

    Anyone have any info on the Motorsports cam they used in the small OHV engines? #37536k Was it anything special or just a steel, most likely non comp release, to replace the stock composite cams....or did it have a little "spring in its step" :laugh:
  7. R

    Dyno 308 cam in Hemi Predator?

    Hi Everyone, Got a little bit of an arms race going between my brothers and I in regards to our minibikes. I'm looking to add squeeze some more power out of my Hemi Predator (current set up listed below). Does anyone run a hemi predator with a Dyno 308 cam? Mikuni 22mm carb (130 main, 125...
  8. R

    Dyno 308 cam in Hemi Predator?

    Hi Everyone, Got a little bit of an arms race going between my brothers and I in regards to our minibikes. I'm looking to add squeeze some more power out of my Hemi Predator (current set up listed below). Does anyone run a hemi predator with a Dyno 308 cam? Mikuni 22mm carb (130 main...
  9. F

    Dyno Cam 245 For Tecumseh

    Anyone here running a Dyno Cam in their Tecumseh HS40 or HS50 engine? I bought a Dyno brand 245 last year I was not 100% sure if it was correct for an HS40 or HS50 or what setup engine it was for, I believe it's a somewhat mild cam with about .050" more lift and possibly more duration. Thanks Tony
  10. DeadPixel

    CL1 cam and GX140 valve springs?

    I have the high torque version of the CL1 cam and noticed the cam card recommends only 10.5 LB valve springs. Its the hardened version. That seams pretty light. I am rethinking my build and kinda thinking of trying the GX140 springs as NR says there 16# will these run to the 6K that I am going...
  11. L

    wtb black mamba cam for non-hemi predator

    wtb black mamba cam for non-hemi predator.. no rush.. for a budget build
  12. CLH

    Timing a Tecumseh 7hp without a dial gauge?

    I need to replace the points and condenser on my HH70 Tecumseh due to a no-spark situation. The manual says I can set the points "by rotating the crankshaft until the point arm is resting on the high side of the ignition cam." My problem is I can't really tell where the highest point in the...
  13. maknwar

    Wanted: hemi arc parts and cam

    Looking to hop up my hemi. Arc flywheel, arc rod and a cam needed. Whatcha got?
  14. danford1

    Predator 212 Hemi cam questions

    I have a Predator 212 Hemi. I started looking for a cam thread but didn't find one. What is the progression from stock to wild as far as cams go? Is there a chart that shows lift and duration of all the cams? How much cam you safely run in a stock 212 Hemi? I mean using stock piston, stock...
  15. 125ccCrazy

    Trade Briggs 5hp 325/330 lift cam for smaller cam

    Looking for a smaller lift cam for a build, somewhere between 250 and 290 lift...
  16. S

    Cam, Timing, and Rocker Ratio for Low RPM torque build HEMI mud motor

    1st post. Have done lots of reading here. I'm looking to build a high torque low RPM motor for a boat mud motor. I have a stock non-hemi on the boat right now and it bogs pretty bad and will only run 2000-2300 rpm with a full load. I need more torque to get it up on plane so the motor can...
  17. BWL

    Cam question

    What the most camshaft you can put in a 212 non-hemi Predator without worrying about clearance issues? .308? Do you guys use ratio rockers on a big cam like that?
  18. markus

    HS40/HS50 mechanical compression release cam (from 5.5 ohv)

    In the last updates of Parts listings for Tecumseh engines, Tecumseh was substituting the 33158 fixed compression release cam with the 37040 mechanical compression release version that was made for the OHV engine. Has anyone installed one into a rebuild if and has their been any issue with it...
  19. xBrent92

    .290 cam $80+shipping.

    I may go a bit lower but here are a couple pics. The camshaft looking all nice and pretty: Here is the cam spec sheet: Price is negotiable.
  20. Wyourke

    Honda GX160/200 Cam for Predator - for sale

    Honda GX160/200 Camshaft from NR Racing (fits Predator motor) Camshaft, 252-0207: SPECIAL HIGH TORQUE GRIND FOR SMALL TRACKS, 6000 rpm, 22 lb Springs Required, 26 recommended. 10 to 1 Compression or higher recommend, however it will work with lower compression ratios. This is one of the best...
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