93 to 94 cummins

[SEmerson]

Waht is the differnce in a 93 and a 94-98. 5 cummins? I thought thay where the same but I see differnt forums

 

[Lil' Dog]

93 is still the older body style, which I happen to like . The 94 was the first model year for the new body style. The CTD also had a few upgrades to that year. Check out Fritz's website for good Technical data on all the CTD years.



J-eh

 

[Joe G.]

The injector pump is the big difference between the engines in the '93 and the '94. The '94 was the first year to have the P7100 in line pump.

 

[R.E. Miller]

For all the beef between engines look at Dave Fritz's web site under the links page under member's web pages

Russell

 

[SEmerson]

How is its reliablity compaired to the 94-98. 5?

 

[Joe G.]

Both the early and late pumps are mechanical. There are '89 - '93 trucks running around with a LOT of miles on them. Same thing for '94 - 98. None of the late model electronic pump type of failures for them that I know of. A close friend of mine has a '93 that runs just like it was new. But so does my '95. Both super reliable.



12 VALVES RULE!!

 

[illflem]

Think the biggest engine drawback to the 1st gen trucks is no intercooler. Still better than a electronically ruled 24 valve though.

 

[SEmerson]

The reason I ask is a freind of mine is getting a 93 for his ford crew dualy. We were on the way to get it but my 2001 cummins broke down 300 mile from home on the way to get it. What great avertisement for me and cummins.

 

[Joe G.]

Can't help myself, but did I point out that the mechanical pumped 12 VALVES RULE?

 

[paccool]

Illflem,



From 92. 5 onward, they had intercoolers. That was when they went to the 18. 5 turbo housings.

 

[Cummins Corvette]

91. 5 and up had intercoolers. I had one. 21cm exh too.

 

[paccool]

Woops - sorry 'bout that CAnderson. I thought it was 92. 5's. Learned something new today!

 

[rubberneck]

Originally posted by CAnderson

91. 5 and up had intercoolers. I had one. 21cm exh too.

yup, my dads 92 is same as yours. man that 21 housing sucked. much nicer now with the 14 cm

 

[SEmerson]

what kinda power are people makeing by just turning up the pump?

 

[rubberneck]

Originally posted by SEmerson

what kinda power are people makeing by just turning up the pump?

my dads 92 with a 5 speed, and pump turned up put 196 hp to the ground. he could go up higher, as his egt's never even get close to being out of controll. injectors are next. the 94 and newer trucks, are a whole new ball game. you can get some way huge power out of that p pump

 

[Cooker]

A friend dynoed his 90 (or is it an early 91), on a dyno at CAT with the pump turned up big time (so big, it failed 5 months later) at 253hp. I have no idea what EGT's were, but I'm sure they were through the roof.



Since his new $1000+ pump, he has turned the pump down considerably.

 

[Power Wagon]

The secret to HP, AND to making the pump survive, is changing injectors. "Big" injectors flow more and take away the huge peak pressure strain on the pump.

 

[Lil' Dog]

Originally posted by SEmerson

what kinda power are people makeing by just turning up the pump?

I have only adjusted the pump so far and have dynoed at 201 RWHP at 2450 RPM . Thats about a 70 Hp increase at the flywheel!!!!Not bad for just the membership here, All the help here has improved my enjoyment with the CTD and turned a few heads with the Ol' First gen.



BUT I know that I am playing with fire as wear on the pump goes up exponentially, so Injectors are next, plus other goodies, exhaust, housing etc...



Now this is not just using the screwdriver on the fuel screw, there are many other adjustments to make it driveable and to increase power throughout the power band. If you need some specifics I, Power Wagon or many others could elaborate.



J-eh

 

[SEmerson]

I will need more info later but right now I am just getting a overview. thanks more threadsto come later.