What he means is to take the range box off the front of a 203 and mate it to the front of a 205. That gives u hi, 2 to 1 low, 4 to 1 low. Actually we are using a t-case from a 2.5 ton duece truck for the extra drop for drive line angles. It is ruffly 2 to 1 like most any other cast iron case but will be the last thing to worry about. Its not the gearing I am really concerned about since this will not be a crawler or a comp machine. We are going to get a quality clutch from one of the sled pulling manufacters so that won't be an issue and I don't think the NV4500 will get flogged too bad for now until we do the P-pump later. I am pretty sure that the sb66 will get me in the 450-500hp range just was curious about the lag I will see.

 

O.k. here's my thought explained more clearly. First of all before i got into this diesel thing, my hobby was wheeling. Being I'm a core toyota guy I've learned alot about gear reduction since the 22re motor is a gutless powerhouse, though bombproof and reliable as all get out. Doubling the transfer case makes all the difference in the world and is the only way to go. That's why 90 some percent of yotas running 38 and 40 inch tires still have the stock motor rather than doing a V8 conversion. So with that said, the NP205 can easily be doubled by adding the gear box of an NP203 to the back of the whole 205 case. The 205 has huge helical gears and super beefy input and output shafts, breakage isn't likely. Adding the 203 to the 205 gives an additional 2:1 low range to the existing 2:1 low range giving 4:1 low range and everything in between. With a 5 speed in front of that you have alot of gears to play with. It's an awesome mod for off-road, and makes horse power way less of an issue. I just thought it might be somethng to look into. Do a google search on it for more info. Hope that made a little bit of sence.

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Dang it D Gandy ya snuck in on me.

 

takes you 20 mins to type? one finger keyboard hammer eh? nah makes perfect sense there muskrat still currious bout the 205 runnin to the 47rh... other than twins the trans is about the biggest bomb you can do to this truck and good lord does this truck need it 2500 rpm is 65-70 mph flat land still gets 19mpg tho hahaha

 

Stop making fun of me. Yes, a 205 will work w/ the 47rh.

 

For a single turbo set-up i think the Silver bullet 66 will be too much turbo. Your spool-up will be too high in the RPM range to make best use of the VE's fueling.

 

Thats what I was getting at RSWords. I know on a commonrail it wouldn't be as much of an issue, but since the ve plays out in the upper rpm range...... I guess we will try it when we get it running and if it is too laggy then we will throw together an he351/sb66 combo. Time will tell I guess, Thanks.

 

I think it will be too small for a bottom turbo on a twin set-up. you can always use a real small shot of nitrous to spool it!

 

U don't think that the he 351 would be just enough to get the 66 spooling? I guess we will just try it for a while. I thought that it would be a good twin combo just to allow the spoolup that we need with the ve and still get enough flow with the 66 to burn the fuel? Any input is appreciated, just trying to get a better understanding on this.

 

i've heard the he351 is an ok turbo upgrade for a first gen. problem is; your still going to experience lag either way; as the 351 doesnt actually spool the 66. drive pressures should remain equal between the 351 and the 66.so either way the 66 will lag just as bad with or without a compound set-up but the 351 will fill the gap where the 66 lags. but then again there is the possibility that the 351 will hit its peak; fall flat on its face and then the 66 will just start to light and result in an erratic power band. simply put... the turbo maps have to be progressive and or slightly overlap to get a really good twin set-up

 

I see, guess I need to do a little researching on the mapping of these to turbos, thanks.