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  1. Ratpack

    mpi supercharger question

    Mack told me previously that I could go to 14. Above 10 you need to run the Aluminum pulleys.
  2. Ratpack

    Let's see your homemade rear heat exchangers.

    I just put one on my 2002 Viper off of an Assult. I'll take a picture tonight.
  3. Ratpack

    RX1 fuel pump

    Fixed. Power lead to the pump was broke. When I was doing wheelies it would loose contact. That was hard to find. Thanks everyone.
  4. Ratpack

    RX1 fuel pump

    I have the one that came with the kit. There have been no problems for years. This year,there are times it is missing. Last weekend it would die after a couple hundred yards. The sled will idle forever,but when I hammer on it,It shuts off. Was hoping that the fuel pump was bad, but i did a...
  5. Ratpack

    RX1 fuel pump

    Where can I get a new fuel pump for an RX1 with an MPI stage One supercharger?
  6. Ratpack

    03 RX-1 mountain

    I put it on the rear of the extension. You should be able to just replace the cross over tube with a cooler. I am building a 2002 viper now. That is getting a rear cooler from a Switcback put on it.
  7. Ratpack

    03 RX-1 mountain

    I did. I'm running a 151"x 2" with a blower. I also have a rear cooler. Going down the trail i'm a constant 154*.
  8. Ratpack

    Blowing belts

    If your wife isn't home, the dishwasher works really good.
  9. Ratpack

    Blowing belts

    Yes it does need cleaned. It also may need to be rebuilt. There are two bronze bushings that wear out. The clutch will close crooked and tear up belts if they are worn. There are also plastic slides that you spider rides in that wear.
  10. Ratpack

    JR

    It is a really good day when your 15 year old wants to join TY. It is even better when he wants his user name to be Ratpack JR. I now know what a pain in the rear I am to my wife. He is as hooked as I am.
  11. Ratpack

    Fuel Pump Question?

    It comes out of a relay by your right foot well.
  12. Ratpack

    Coil wire voltage

    My number 4 cylinder is not firing. We have cleaned the carbs,switched coils, and checked the coil wire all the way to the CDI. Does anyone know what the voltage is coming out of the coil wire BEFORE the coil?
  13. Ratpack

    MPI Reliability

    I bought a used Stage 1 blower in 2009. Have not had any problems. This first time it was taken out was yesterday because I'm pulling the motor to lower my compression. I love it.
  14. Ratpack

    RX1--summer bucket list projects (mods) whats yours

    Last year, everything was fixed or replaced. This year, mine is finally getting a head shim.
  15. Ratpack

    2003 RX1 Maintenance

    I use Mobil 1 0-40 When I used Amsoil, I used a lot more oil.
  16. Ratpack

    AFR readings help?

    My RX1 idles lean like that. Be more worried about your WOT. What are your numbers going down the trail?
  17. Ratpack

    2003 yamaha rx-1 wont start please help...

    You may have water in the fuel. Put a can of dry gas in a NEW tank of gas.
  18. Ratpack

    Gwinn Mi Ride... who want to ride?

    Tell me what time you are riding on sunday, and how long it will take us to get there and we will be over. Mr. Sled, I will send you my #.
  19. Ratpack

    Gwinn Mi Ride... who want to ride?

    We never did meet up in Chautauqua county. We are pulling into Munising saturday evening.


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