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  1. #1

    65U Riva CDI help

    I was wondering what curve I should run. I'm running a Dan Lamey ported cylinder and single pipe. Riva head with 41cc domes. Looks like everyone is running the mod 1 curve. I have my rev limit set at 7900. I would still like to run 93 pump gas. I was always told that the "limited" and "mod 2" curves were race gas only.

    Also I have 2 of these CDI's and both are bad. What are the chances this one will go out too.

    I have been talking to Greg from Advent and word is on the street that Advent is coming out with a box for the GP1200. He said he hopes to have it done by Havasu and for sale shortly after that.


  2. #2
    bainer1290's Avatar
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    I have also been told to run mod 1 as the others are for race gas.

  3. #3
    old school big raider's Avatar
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    mod 1 for pump gas-mod 2 for race gas and compression over 155psi per riva instructions

  4. #4
    bainer give me a call sometime, I wanted to ask a couple questions about your set up. Your domes are shipped I will give you a tracking # later. Thanks for the replies. Am I to far off with 7900 rev limit?

    Chad
    517.652.4722

  5. #5
    Flying Scotsman's Avatar
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    What rpm can you turn with the Lamey ported cylinders

    7400 rpm should be a high enough rev limit unless you turn more already.
    I think a single pipe 1200 likes to run 7000-7200 rpm a triple pipe 1200 likes 7200-7500 rpm.
    Without having run Lamey cylinders I would guess 7100-7200 rpm is your sweet spot

  6. #6
    I have never run this cylinder. I wish I could some how contact him to ask. Maybe I'll back to limit off to 7500. I can imagine I would need anything over that by what your saying. I also like to ride a lot on Lake Michigan and do alot of wave jumping. Maybe 7900 would be a bad idea for this. My buddy ran these clyinders on his 97 superstock and he said it pulled hard.

  7. #7
    bainer1290's Avatar
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    What Scott says is the way to go. Out of all the articles on Group K, Riva forums etc... that I have read for the GP 1200 it seems that the target rpm for a single pipe application is around 7200. Although the Riva box recommends setting it at 7900, but does it specify for which curve?

  8. #8
    Flying Scotsman's Avatar
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    I think J-Me ran Lamey cylinders try giving him a pm

  9. #9
    I'll give him a try. Thanks

  10. #10
    old school big raider's Avatar
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    keep it at 7900 for safety -the reason is if you come unhooked you wont bang the limiter and twist a crank-that setting is just a limiter not advance or retard

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