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Shaving b16 rods

Discussion in 'Engine Building' started by b16coupe, Jul 11, 2005.

  1. b16coupe

    b16coupe Senior Member

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    I am planning on putting a set of ctr pistons in my b16, but after doing a little research i find out that you have to shave some of the rod for the ctr pistons to fit. what part do i shave off and how much do i take off? I have also read that the ctr pistons will give me 10.8:1 or 11.1:1 or 11.6:1 CR. Which is it?

    Thanks
     
  2. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    I'm getting 10.8:1 compression through the calculator... I'm sure I'm doing something wrong though. I don't see why you'd need to shave the rods any.
     
  3. K2e2vin

    K2e2vin Senior Member

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    its around 11 i believe. go on ff-squad.com (look for a tech section) from what ive seen, they have the most accurate b-series calculator and even have articles on the R pistons.
     
  4. K2e2vin

    K2e2vin Senior Member

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  5. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    i have it at 10.88:1 with p30 (JDM CTR pistons if memory serves)

    DOH!!!! CHECK REFRENCE SECTION
     
  6. hybrid89

    hybrid89 thistownsucks...

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    p30 is the sir II pistons...CTR's are PCT
     
  7. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    oh okay thanks for the correction.
     
  8. eater_eg6

    eater_eg6 Junior Member

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    yah...im planning to change my ori piston(b16a2) to ctr piston .... n someone tell me that hav to shave the rod too... but dunno which part of rod hav to shave actually... thanx.. need help here too... :(
     
  9. b16coupe

    b16coupe Senior Member

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    http://www.ff-squad.com/tech/pistons/B16%2B17rodmod_1.jpg

    K2e2vin's site is a good resource
     
  10. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Oh- shaving THAT... thought you were talking about notching the rods or something.
     
  11. eater_eg6

    eater_eg6 Junior Member

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    ya...i got it... thanx ya.. :)
     
  12. b16coupe

    b16coupe Senior Member

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    Yep, i did originally too
     
  13. sohcslammer

    sohcslammer Senior Member

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    Just for reference - you also have to do this to LS rods to fit "R" type pistons on them.....
     
  14. b16coupe

    b16coupe Senior Member

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    Do you have to get a maching shop to shave it perfectly flat or can you just do it yourself with a dremel or some other tool?
     
  15. K2e2vin

    K2e2vin Senior Member

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    well you shouldnt try doing it yourself unless unless you have some sort of milling machine or some sort of planer. a dremel isnt going to be too accurate and can probally ruin the balance. also, ive never really seen anyone try to shave steel with a dremel(only cut, so i dont know if there's even a bit for that).
     
  16. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    :werd:

    Take it to a shop.
     
  17. b16coupe

    b16coupe Senior Member

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    I just got back from 3 different machine shops and none of them can shave my damn rods. I don't see what balance i would be messing up if i did it myself with a grinder or something. How will it throw the balance off?

    Thanks
     
  18. Citizen_Insane

    Citizen_Insane Senior Member

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    Well if you don't get them all shaved EXACTLY the same it'll throw off the balance of your engine and boom, no more engine. With a grinder you can't do precise machining like you can with a mill. I mean, you can try it yourself, but I sure as hell wouldn't.
     
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