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  1. J

    **CHALLENGE** - TURBO LAG TEST using a log

    If you watch the Maf the g/s on a 475 will be the same as a stock ihi at about 10 psi compared to the 20 the stocker is pushing for pressure ratio. The 475 is moving way more air But its all good Josh because we are going to have real live data here to test our assumption's :thumb
  2. J

    Lets talk Turbine size and A/R continued

    TO start it off how many guys on here with a single have the 83mm turbine and how many run the newer 87mm turbine?
  3. J

    Lets talk Turbine size and A/R continued

    The 472 and 475 both act about the same given the are 87 or 83 and .90. The spoolup is very close. The 75 takes more drive. I went from a 75cw to a 72mm cw fmw model loosend up the housing and now it spools the same as the 75 but performance and egts/ pressures are better. The top end power is...
  4. J

    S472 vs danville 72

    Ok I made a new thread good idea bud. http://www.duramaxdiesels.com/forum/showthread.php?p=774681#post774681
  5. J

    Lets talk Turbine size and A/R continued

    We were starting to get some really good info in Mikes turbo thread. I wanted to continue the discussion here. This thread is only for single turbo's that we are daily driving. Feel free to post video's, spoolup and quarter mile time. I will start by saying how impressed I am with the...
  6. J

    S472 vs danville 72

    The 472 and 475 both act about the same given the are 87 or 83 and .90. The spoolup is very close. The 75 takes more drive. I went from a 75cw to a 72mm cw fmw model loosend up the housing and now it spools the same as the 75 but performance and egts/ pressures are better. The top end power...
  7. J

    Porting to reach high rpm breathing

    So by the time you guys cut more out and go through 3 sets of heads tryin to do better. You have just bought brodix heads. The technical discussion is intrigueing but from a practical sense even socal stage 2 crack some timez and you guys are going bigger? The more people that buy brodix the...
  8. J

    LB7: Won't start

    I would follow service information for a frp sensor code. from mobile
  9. J

    LB7 won't start

    Hook a jump box up and ground it on block. If the truck starts you have a bad ground cable from mobile
  10. J

    S472 vs danville 72

    Daily driving on an s472 you will need a trans cal adjustment. Part throttle up and down add about 25%. It will downshift at 65 to pass. If the truck doesn't downshift you will be rolling coal. I rode in a truck yesterday with a t6 1.32 ar 96/88 turbine 82mm fmw we put together remote mount...
  11. J

    S472 vs danville 72

    That is a fact. The back side is where the difference is. from mobile
  12. J

    Compounds or single?

    472 single if you don't tow. I found some good prices for the 87 tw version from mobile
  13. J

    LB7: Won't start

    40000 psi. Check rail pressure sensor its shorted man from mobile
  14. J

    Compounds or single?

    Where can I buy or the op buy an s473? from mobile
  15. J

    S472 vs danville 72

    I can go wot from a stop. Truck smokes but rolls 20 ft then lights and blows 33" tires away. Iirc my stock truck did not do that. Now if the tc is locked in 5th at 55 mph and I crowd the throttle. Well that is just a slow rolling licomotive that makes an aeful mess. from mobile
  16. J

    S472 vs danville 72

    What rpm at wot are you guys with the single s472/475 shifting at? 3700-3800 seems good for staying on top the charger but the higher rpm comes wiyh a good bit of drive preassure if I run a towable turbine housing. Shift points and a/r? from mobile
  17. J

    Compounds or single?

    I say remote mount single water to air ic. Maybe a gt4502 or something that size but get an aftermarket t6 housing. 12mm stroker and 100 overs. Hey man u started this thread and its christmas:) from mobile
  18. J

    6v53 Detroit diesel Rail running 7's over 30 years ago.

    I get my ally parts from johnson towers I will ask them on valves maybe do some testing. from mobile
  19. J

    6v53 Detroit diesel Rail running 7's over 30 years ago.

    I wonder how that valve would work on our compound setups? from mobile
  20. J

    S472 vs danville 72

    I think he is saying he is really stoked with his new setup and christmas came early. As much crap as he went through lets wait til new year to beat him up :-p from mobile
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