| Author |
Message |
steve souza (Stevebnut) (24.91.90.28)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, September 04, 2002 - 5:06 pm: | |
My detroit is rated at 190 hp but i have seen ratings of 230 hp on 6v71 natural aspirated.
what would the differences be?
I know mine has a 2 valve head and some have 4, would this be the difference?
also my injectors are n55, could i just put larger injectors like n65 or n70 and make more hp or would it just smoke?
Is trying to squeeze more out of this motor just a waste of time?
I can't do an engine swap yet because my wife does'nt make enough money HEHEHE so i have to live with the 6v for a while but in the meantime i would like to climb the hills a little faster like say 30mph or so.
Propane injection sounds like parts in the street after a couple of short lived bursts of power.
I am only looking for a few ponies more.
Thanks ---Steve |
Henry R. Bergman, Jr. (Henryofcj) (63.224.197.10)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, September 04, 2002 - 6:35 pm: | |
With N65 injectors with a 4-valve head and "A" timing (instead of the "S" timing your probably have now) and around 2200 rpm on the governor you can expect around 238 gross hp at 2100 rpm and around 600 gross foot pounds of torque at around 1400 rpm.
Going to larger injectors than the N65's will give you a little more power, but at the general expense of less mileage. To burn more fuel efficiently the mill would have to be turbocharged and intercooled which is $expensive$.
However, having said that, some strange things have been done to the 6V71 engine. With the proper many changes inside the engine plus the proper turbo with intercooler, power can literally go thru the roof.
Years ago we had some 671TI fire engine engines which were rated at 320hp at 2300 rpm and 900 foot pounds of torgue at 1600 rpm. What killed these mills was the application---hundreds of full power starts on a cool or cold engine.
We also had some older equipment which had the same 671 without turbos (671N fire service) which were rated at 262 hp at 2300 rpm using N90 injectors! The Engineers had to learn to keep their foots out of the mills soossss they would not blow black smoke.
A 238 hp rating with your engine was very common and used extensively in heavy trucks of the period. To upgrade your mill to these specs would require head, injector, timing and possibly piston changes. Fairly $spendy$ but doable.
Or.....you could just save the money and leave your fine coach Detroit alone and just enjoy the view while climbing hills. I guess it all depends what your want from the bus and what you are willing to $spend$. Good luck. |
steve souza (Stevebnut) (24.91.90.28)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, September 04, 2002 - 8:33 pm: | |
Henry-- it sounds like i have a brother firefighter/busnut! I am in new bedford mass 13+ years now as a firefighter. Thanks for the info. I probably will just watch the scenery as I lumber along dreaming of future 6v92 turbos and v730s
Steve |
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