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best compression for N2o?

Discussion in 'Forced Induction' started by Magana559, Jan 17, 2009.

  1. Magana559

    Magana559 The Warden

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    HereIs my build:


    The block
    B16a block bored .20 over
    12:5:1 CR pistons
    Eagle H-beam rods
    Eagle crank
    Some kind of block gaurd (installed and recomended by Stewart racing engines)

    The head

    B18c1 Head
    BC dual valve springs
    BC Forged retainers
    BC Stage 3 Camshafts
    BC Stainless steel valves
    Cometic MLS head gasket


    So with all that said and done my buddy says my compression is too high! and that I have the wrong kind of cams.
    i dont get it......always thought high compression is better for n2o.


    I would call my tuner but hes a bussy guy with school and shit so i dont want to bug him over something stupid like this.....and i dont want to get yelled at! :eek:
     
  2. austin20110

    austin20110 New Member

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    how much are you planning on spraying?
     
  3. Magana559

    Magana559 The Warden

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    not much 50 75 max
     
  4. austin20110

    austin20110 New Member

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  5. Magana559

    Magana559 The Warden

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  6. 97hatch

    97hatch ?

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    you having your engine built by Stewarts engines In Indianapolis Indiana. if so they are a great shop
     
  7. newb

    newb phresh VIP

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    Nitrous loves compression. It may be a bit harder to tune, but itll be worth it.
     
  8. get_nick

    get_nick These snozzberries taste like snozzberries... VIP

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    13:1 would be great. a 100 shot would be fine.
     
  9. Magana559

    Magana559 The Warden

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    Already did! ;)
     
  10. Magana559

    Magana559 The Warden

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    I dont tune but i only get charged $300 per tune so it really dosent matter how long it takes.
     
  11. Magana559

    Magana559 The Warden

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    My only problem is 91 pump gas here in cali and its my DD.....but the good thing is i work about 3 miles away from VP racing fule 100 octane all day......But a $8 gal and a 70 mile round trip is gonna suck.
     
  12. 97hatch

    97hatch ?

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    you dont have to run the high octane all the time just when you plan on spraying the car. did you buy one of Jims heads or is it all stock ports he gets amazing flow numbers out of his all out race heads and his street heads are pretty nice also
     
  13. Magana559

    Magana559 The Warden

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    Naw i didnt get one of his heads....i wish i could have but i dont have that kind of money right now.

    I Built my own head and i had a buddy of mine port it....got 295 CFM's on the intake side....not bad for a FREE job lol.

    well with a 13:1 CR its kind of hard to run 91 with 110+ Heat In the summer or right now with the fog (high humidity).
     
  14. 97hatch

    97hatch ?

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    yes i agree do you have E85 available in your area if so i would consider runing this as it is great on a HC engine i built a 14.5:1 crVtec last summer for a kid and put down 292 at the wheels with it On e85 and it was his DD
     
  15. newb

    newb phresh VIP

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    What fuel pump and injectors did you use?
     
  16. Magana559

    Magana559 The Warden

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    You Know as a matter of fact I do! And its About 2.90 a gal now Hmmmmm

    Thats Good numbers.....maybe i can swap pistons in some months!
     
  17. Magana559

    Magana559 The Warden

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    RC 310cc injectors and walbro 255LPH
     
  18. Magana559

    Magana559 The Warden

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    What size injectors was he running???

    440cc or 550??
     
  19. newb

    newb phresh VIP

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    Sorry, I was directing that @ 97hatch.
     
  20. Magana559

    Magana559 The Warden

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    cool np i would like to know myself
     
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