[Vwdiesel] 5 speed for diesel

[Roger Brown]

rumple stiltskin wrote:
>       I am looking for a 5 speed for my 1982 VW Caddy with all parts needed to convert the tranny from a 4 to 5 speed
>    
>    
>   present                desired or similar
>   4sp                       5sp
> GC12065              FFxxxxx  ???
> =============================================
> 1st 3.45             3.45
> 2nd 1.94            1.94
> 3rd 1.28             1.29 gear ratios
> 4th 0.91             0.91
> 5th - 0.76
> fin 3.89               3.89   ??        
> 
>    
>   an estimation is almost 1000rpm less at 65mph using the FF tranny. That is what 
> you want. Frankly, I don't think the engine has enough to sustain speed 
> at only 1800 rpm or so.
> 
> Max torque is at ~2000rpm. Max fuel economy will be found here as well.
>    
>   here are my other thoughts in my project...in order to achieve the desired highway crusing speed with desired torque, rpm's etc., I am considering the following:
>    
>     the truck is wearing  14 inch tires , not 13 as I had assumed.
>    
>   so that could make a considerable difference, yes. 
>    
>   has p175/65/R14   could use say ?____________in a taller profile (sidewall height?)
>   to get a longer stride? greater circumference?   
> 
> 
> 
>   what ideas using the 5 speed tranny you would ship to me that will help if you please?
>    
>   mike in ft.myers, florida 305-731-3185
>   stiltskin1969 at yahoo.com

Well, you can get the later model FF or FN transaxle with the 0.71:1 5th gear.  Then have a shop swap in a 3.67:1 ring&pinion 
gear from a gas transaxle w/ 3.67:1 final drive and put a 0.71 5th gear in it, whatever floats your boat.  Then stick the 
tallest tire you can fit on there, the 175-65R14 is 23" tall, you could try something like a 185-70R14 for another inch of tire 
height.  That would result in about 2370 RPM @ 65 MPH:
	http://www.4crawler.com/4x4/4LoCalc.shtml


-- 
    Roger