RV 275's or DD1/2 ?
11-18-2002 | 08:42 PM
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RV 275's or DD1/2 ?
I am looking into buying injectors. I found some 275's for $250 and DD1/2's are $400/$480 respectively. Are the DD's worth the extra cost? I regularly tow a fully enclosed 18 foot trailer. It only weighs about 4k but with the wind drag I really feel it back there. I am not looking to make a hot rod just want more performance for passing, etc. If the 275s will do it then that is great I just don't want to buy them and the 6 months from now wish I would have went bigger. What do you think?
11-18-2002 | 09:19 PM
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Re:RV 275's or DD1/2 ?
DDII's are about 80hp or so, combine that with the EZ and you might need a new clutch depending on your driving style. Just something else to think about. <br><br>Personally if it were me I would go DDII's, EGT's should be managable..and you should have great on the spot hotrod availabilty.
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11-18-2002 | 10:49 PM
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Re:RV 275's or DD1/2 ?
Well, if nobody else will, I'll make the argument for the 275's. Bdog, you said you weren't interested in hotrodding, only in safe and durable power to tow. That's the key -- what *you* want.
(1) So, if you want to burn tires, toss clouds of smoke into the air, incinerate every ricer on the road, and scare the hel* out of yourself, get the DD's. And don't bother with the 1's or 2's -- they're for wimps. Go for the 3's or the Supermentals, and a couple of major fueling/timing boxes. However, if you want to tow with power and have your engine last 500K + miles, sane and safe and with enough grunt to put a twinkle in your eye, put the 275's together with your Edge EZ. It's the best balance between power and durability -- and in addition to power, durability is what a Cummins is all about.
(2) If you buy anything more than the Edge box and the 275's figure on a thousand dollars for a South Bend clutch. Figure on more wear and tear on your drivetrain, because you won't be able to keep your foot out of it -- it's just too tempting. And you could probably use a new turbo -- another thousand or so.
(3) More than the 275's and kiss your warranty goodbye, if you've still got one and care about it. (Most of the dealers I've talked to will tolerate the 275's, if they even bother to check.)
(4) The injector tips on the 275's are stronger than the aftermarket injectors. I helped a guy pull off the head of a '98 last Saturday, after the tip of a certain aftermarket injector fractured in the #4 cylinder. "Too many holes, not enough metal," he said. It wasn't pretty.
Let me say that I really appreciate the forum that Jack and the others are running here -- knowing as I do that I can argue against everybody else, and not get crucified for it.
;D 
GP
(1) So, if you want to burn tires, toss clouds of smoke into the air, incinerate every ricer on the road, and scare the hel* out of yourself, get the DD's. And don't bother with the 1's or 2's -- they're for wimps. Go for the 3's or the Supermentals, and a couple of major fueling/timing boxes. However, if you want to tow with power and have your engine last 500K + miles, sane and safe and with enough grunt to put a twinkle in your eye, put the 275's together with your Edge EZ. It's the best balance between power and durability -- and in addition to power, durability is what a Cummins is all about.
(2) If you buy anything more than the Edge box and the 275's figure on a thousand dollars for a South Bend clutch. Figure on more wear and tear on your drivetrain, because you won't be able to keep your foot out of it -- it's just too tempting. And you could probably use a new turbo -- another thousand or so.
(3) More than the 275's and kiss your warranty goodbye, if you've still got one and care about it. (Most of the dealers I've talked to will tolerate the 275's, if they even bother to check.)
(4) The injector tips on the 275's are stronger than the aftermarket injectors. I helped a guy pull off the head of a '98 last Saturday, after the tip of a certain aftermarket injector fractured in the #4 cylinder. "Too many holes, not enough metal," he said. It wasn't pretty.
Let me say that I really appreciate the forum that Jack and the others are running here -- knowing as I do that I can argue against everybody else, and not get crucified for it.
;D GP
11-18-2002 | 11:15 PM
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Re:RV 275's or DD1/2 ?
Thaks for the replies. I am still not decided yet. I am thinking 275s will get the job done but I also see the arguement for get the DD's because you will want to upgrade later. I know there are a lot of variables involved but Gear Poet brought up a very important point. My truck has 66k on it and I plan on driving it to at least 300k. Will adding the bigger injectors jepordize my chance of reaching this goal? My last truck a ford diesel I sold with 245k on it and the one before that was a chevy 350 gasser with 267k on it when I traded her in. Both never had any engine probs so I think I take good care of them. In theory the Cummins should outlast both of them but I don't want to overdo these upgrades and trach my truck.
11-19-2002 | 02:17 AM
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Re:RV 275's or DD1/2 ?
I will also toss out a good word for the little 275's. I've had 275's in my truck for 4 years now and they are great injector for towing. They helped increase lowend power and improved throttle response greatly over stock. 8) I managed to get 3 mpg better after putting in the 275's also. They are a great injector for someone wanting a little more power. They also create little to no smoke so it's still possible to not blacken the trailer when pulling hard. ;D<br><br>Now on the down side, I've grown out of them now. 
I quit all the hauling I was doing and now only pull my camper and an occasional trip with the big gooseneck trailer. : So I'm looking to upgrading to a DD3 or larger, but can't do anything like that before I put a clutch in this well worn stocker. 
<br><br>If you think you can avoid the Bombing Virus go with the 275's but if you have the need for more power go with the DD2's. Also injectors aren't hard to change if in a few years you deside you need More Smoke. 8)<br><br>Just thought I'd confuse you a little more. <br><br>DB
They are a great injector for someone wanting a little more power. They also create little to no smoke so it's still possible to not blacken the trailer when pulling hard. ;D<br><br>Now on the down side, I've grown out of them now. I quit all the hauling I was doing and now only pull my camper and an occasional trip with the big gooseneck trailer. : So I'm looking to upgrading to a DD3 or larger, but can't do anything like that before I put a clutch in this well worn stocker. <br><br>If you think you can avoid the Bombing Virus go with the 275's but if you have the need for more power go with the DD2's. Also injectors aren't hard to change if in a few years you deside you need More Smoke. 8)<br><br>Just thought I'd confuse you a little more. <br><br>DB
11-19-2002 | 08:09 AM
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Re:RV 275's or DD1/2 ?
Bigger injectors = more fuel = harder working engine = more wear and tear. That's what I've heard. It's up to the driver. If you put the pedal down with bigger injectors, you'll wear your engine out faster. If you don't put the pedal down, why do you want bigger injectors? <br><br>But it all has to do with probabilities. I like my 275s. <br><br>Ascraeus
11-19-2002 | 08:56 AM
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Re:RV 275's or DD1/2 ?
[quote author=Gear Poet link=board=4;threadid=7206;start=0#69018 date=1037677748]<br>(4) The injector tips on the 275's are stronger than the aftermarket injectors. I helped a guy pull off the head of a '98 last Saturday, after the tip of a certain aftermarket injector fractured in the #4 cylinder. "Too many holes, not enough metal," he said. It wasn't pretty. [/quote]<br><br>Theres technology to solve this. SO I wouldn't consider this a 100% true statement.
[/quote]<br><br>Theres technology to solve this. SO I wouldn't consider this a 100% true statement.
11-19-2002 | 09:40 AM
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Re:RV 275's or DD1/2 ?
Well guys, Thanks for all the advice. I just ordered some 275's. I dont want to stress my engine too much and I think they will offer me better fuel economy. The DD2's were looking good but I can't really justify the extra $230 for them right now given my current needs.
11-19-2002 | 11:05 AM
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Re:RV 275's or DD1/2 ?
KatD. wrote:
"Theres technology to solve this. SO I wouldn't consider this a 100% true statement."
I understand your point. And I wouldn't disagree with you. But there was a cost factor involved in Bdog's decision -- obviously -- and mine, too. Like Ascraeus said, we're only talking about probabilities here. The majority of people who go with DD's never have immediate problems -- and what longterm problems they have most likely have to do with their own driving habits. Technology and money can solve it -- but then the decision becomes, "how much do you want to spend?"
I'd like to have two CTD's -- one as a driver (with box & 275's), and one as a "horse from hel*" -- 700HP and 1400 lbs. torque. But I don't have the money. Maybe someday.
GP
"Theres technology to solve this. SO I wouldn't consider this a 100% true statement."
I understand your point. And I wouldn't disagree with you. But there was a cost factor involved in Bdog's decision -- obviously -- and mine, too. Like Ascraeus said, we're only talking about probabilities here. The majority of people who go with DD's never have immediate problems -- and what longterm problems they have most likely have to do with their own driving habits. Technology and money can solve it -- but then the decision becomes, "how much do you want to spend?"
I'd like to have two CTD's -- one as a driver (with box & 275's), and one as a "horse from hel*" -- 700HP and 1400 lbs. torque. But I don't have the money. Maybe someday.
GP