VWDiesel.net The IDI, TDI, and mTDI source.

Engine Specific Info and Questions => IDI Engine => Topic started by: lesharoturbo on June 14, 2006, 07:48:31 am

Title: RPM's vs Speed
Post by: lesharoturbo on June 14, 2006, 07:48:31 am

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

Title: RPM's vs Speed
Post by: VwPodRacer on June 14, 2006, 10:50:49 am

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

Title: RPM's vs Speed
Post by: tylernt on June 14, 2006, 05:22:20 pm

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.

Title: RPM's vs Speed
Post by: VwPodRacer on June 15, 2006, 10:42:49 am

sorry my bad just got home with my car and its about 2500 at 100kms

Title: RPM's vs Speed
Post by: jtanguay on June 15, 2006, 11:27:46 am

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

Title: RPM's vs Speed
Post by: tylernt on June 15, 2006, 12:10:29 pm

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.

Title: Re: RPM's vs Speed
Post by: 745 turbogreasel on June 15, 2006, 01:44:52 pm

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

Title: RPM's vs Speed
Post by: hillfolk'r on June 15, 2006, 07:25:02 pm

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: