RPM's vs Speed - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• RPM's vs Speed by lesharoturbo on 14 Jun, 2006 07:48
• Could someone post what heir RPM's are at say 60 MPH and 75MPH?
  
  I am thinking of swapping a diesel into my auto Montero and need to see if the engine speed in top gear is condusive to a diesel powerband.  Currently I see about 2400 @ 60 and just over 3000 @ 75.
  
  I know there are other considerations with the tranny and the torque converter but I will deal with these later.  The good news is the tranny has a mechanical (cable) kickdown instead of electronic.  I just don't know about the lockup on the TC.
  
  
  Thanks
  
  Bernie
• #1 by VwPodRacer on 14 Jun, 2006 10:50
• I drive a 97 1.9TD jettta with a 020 tranny and my RPM's is around 3000 at 60mph/100kms in fifth gear.
• #2 by tylernt on 14 Jun, 2006 17:22
• Quote from: VwPodRacer

  I drive a 97 1.9TD jettta with a 020 tranny and my RPM's is around 3000 at 60mph/100kms in fifth gear.

  Dang that seems high. My FF code transmission does ~2600rpm @ 65mph and a titch over 3000rpm @ 75mph.
  
  You can see what some of the various VW trannies do here:
  
  http://scirocco.org/gears/
  
  Just plug the numbers into the calculator.
• #3 by VwPodRacer on 15 Jun, 2006 10:42
• sorry my bad just got home with my car and its about 2500 at 100kms
• #4 by jtanguay on 15 Jun, 2006 11:27
• is 0.71 the lowest ratio for 5th gear you can get?  Any mods out there to lower that???
• #5 by tylernt on 15 Jun, 2006 12:10
• Quote

  is 0.71 the lowest ratio for 5th gear you can get?  Any mods out there to lower that???

  There is a .68 that you can get from somewhere. There was a thread on it on VWVortex but their forums just got messed up so it may be gone.
• #6 by 745 turbogreasel on 15 Jun, 2006 13:44
• Quote from: lesharoturbo

  
  I am thinking of swapping a diesel into my auto Montero and need to see if the engine speed in top gear is condusive to a diesel powerband.  Currently I see about 2400 @ 60 and just over 3000 @ 75.
  
  Bernie

  
  
  Thats almost exactly what I see in 5th in my 3200LB. Volvo, but most Auto trans cars came with a little  steeper gearing
• #7 by hillfolk'r on 15 Jun, 2006 19:25
• my 7h?(from a 84 jetta td)7 whatever,i forget
   i know its at like 3-3100 at 80 mph,thats with 195-60-14s on the front
  and like 2800 or so at 75,ill check goin to work tomorrow, to  be sure igot some good numbers here :wink: