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  1. J

    Tightening rear diff

    Can be done, but you have to take apart the whole differential. But firstly should you check so that the ladderbar is tightened properly...a loose ladderbar can result in the "clonk" sound. If you need further advice just shoot me a e-mail or PM.
  2. J

    !!$#&%#@$ GETTING CLOSER - 9.177 @ 149.71mph 12.5psi !!$#&%#@$

    Well done! /JP
  3. J

    Would this exhaust setup be too loud? And other exhaust q's.

    Re: Would this exhaust setup be too loud? And other exhaust q\'s. As long as you stay with a mild (stock) camshaft will the sound be ok.
  4. J

    What BHP with mods???

    Baz, The most important work on the heads is in the area just before the guides and down to the seats. If you design that area correctly and still go with stock valves will you notice signinficant power gains. In my opinion is a 2.20 Valve over the top. You will gain almost nothing on port...
  5. J

    new dyno #'s, big torque !!!

    Re: new dyno #\'s, big torque !!! You will not know for sure until you've hit the strip...
  6. J

    Racing Fuel!

    In General--- As long as you have not icreased the compression is there no use of racing fule if you don do a significant igition advance.
  7. J

    What is the reccomended Break-In Process for new Forged Pistons ?

    It all depends on the rings and how the honing process been done.
  8. J

    Heads and cam dyno numbers inside...

    It's actually built for Nitrous, but the race series we are running doesn't allow Nitrous. 10.70 all day on motor. The heads are wery well designed, with a lot of flow "under the curve".
  9. J

    Phone# to SVSi

    If you have a phone # SVSi, pleas PM or e-mail me their number. Thanxs /JP
  10. J

    Heads and cam dyno numbers inside...

    FranciscoR. If you have my post in mind, it's Flywheel power.
  11. J

    need help with lifters/valves

    Hey, remember..it's fun working on your own Viper! :-) Cheers from Sweden!
  12. J

    Heads and cam dyno numbers inside...

    We dynoed our Gen1 643Hp and 663 torque with a Moderate Head/Camshaft/Rockers/Headers combo.
  13. J

    driving impressions new SPEC carbon fiber clutch/al flywheel

    The clutch I've bben using this season is based on a Archer kevlar clutch. Since it did only last for about 20 runs did we do the following with it. The Pressure Plate surface was reworked with new angles. The Disc did get the kevlar replaced with Iron Sinters. That setup lasted for about 30...
  14. J

    driving impressions new SPEC carbon fiber clutch/al flywheel

    My carbon fiber clutch did work 20 runs.
  15. J

    Aftermarket Crank Pulley for Supercharger ??

    A twin belt solution?
  16. J

    Viper crate motor

    There is still blocks and heads around, no problems to get one built.
  17. J

    Fuel pump upgrade

    Jack B, I dont know. I have the data on another location.
  18. J

    Fuel pump upgrade

    Ive been using Gen2 injector on 100% duty cycle. Works ok for Dragracing but not for Road Racing. Will use 40-50 lbs injectors next season. /JP
  19. J

    what do you notice?

    Isn't that one of the most recent built SVSi Vipers...? /JP
  20. J

    Fuel pump upgrade

    As JonB says, "The year matters" The Gen1 Viper has a higher flowing pump.
  21. J

    Porting and polished heads

    Just look so that the runners match the heads. If there is any bumps or so in the runners can you grind them away. If you want to do a serious port job on the intake will you have to cut it open to get access to the runners. The decission about porting the intake is dependent how the heads will...
  22. J

    Porting and polished heads

    The CNC process is just a question of getting many heads to flow the same numbers, to exactly deliver the advertised product to all customers. The best heads are still done by hand...
  23. J

    Fuel pump upgrade

    Just a hose long enough to get the pump down to correct level...
  24. J

    Fuel pump upgrade

    Danny, no I'm not running on boost, I'm using Nitrous as additive. I do agree with you about beeing carefull. I use a set of fixed installed Wide band lambdas with displays to always be on the safe side.
  25. J

    Porting and polished heads

    Many of the tuners offer CNC:d heads. But it's not the CNC that makes flow, it is the porter that designs the shape that does.

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