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 Message Boards » » Dr Pepper's Diesel Performance Extravaganza Page 1 2 3 4 [5] 6 7 8 9 10 11, Prev Next  
sumfoo1
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i learns bout dem grease engines itt.

9/28/2012 3:41:39 PM

Dr Pepper
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always learning something, that's for sure.

9/28/2012 3:53:38 PM

sumfoo1
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How many miles is too many on a common rail?

10/1/2012 6:35:45 AM

Dr Pepper
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none so long as the injectors and lift pump are fine, IMHO. 03-04 had some injector tip issues and the earliest models still had a 47RE instead of the 48RE; that's about all I am aware of to look out for

10/1/2012 7:49:57 AM

sumfoo1
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ok where would the 48re have to be built to shit?

10/1/2012 8:24:45 AM

Dr Pepper
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powerwise?

lightly built = ~500-550whp (triple disc converter, valvebody with servos/accumulator, rebuild, billet input)

in my opinion, though, with a 4x4 truck I'd do all billet shafts, and upgrade the clutch packs as much as possible.... you never know when you need to do a 25psi boosted launch in 4wd... you know, stoplight in front of the hooters, walmart parking lot, etc.

10/1/2012 8:32:19 AM

dustm
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Just for the sake of discussion lets say you had a 12v with a cylinder or two out on one end, or a hole in the block (on one end) or even just a perfectly good engine. Now cut off two cylinders.

Aside from making a 4cyl crank, headers, cam for it, and capping off the open end of the crankcase (w/bearing and such), what else would be involved in making it a running 4-cyl cummins? I don't know much about the fuel pumps but obviously the firing order/timing would have to be modified. Coolant passages? What else?

10/1/2012 10:10:21 AM

adam8778
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Sell parts from 6BT

Buy 4BT

Profit.....

[Edited on October 1, 2012 at 11:14 AM. Reason : y]

10/1/2012 11:13:02 AM

Dr Pepper
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...you do realize there's a 4-cylinder version, right?

shit, tree'd me

[Edited on October 1, 2012 at 11:18 AM. Reason : -]

10/1/2012 11:18:34 AM

dustm
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hahaha no I didn't know that

they pretty common? I still want to find a suitable motor for the diesel locost, and I don't know if I'd be 100% satisfied with a VW motor. I ASSUME that the cummins would be less expensive per HP (also heavier of course), but I've already shown what I know ITT.


edit: know of a good resource to find dimensions and weights on the 4 and 6? quick search not turning up specifics

[Edited on October 1, 2012 at 12:09 PM. Reason : d]

10/1/2012 11:51:10 AM

Dr Pepper
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you can measure one in Jeepman's garage, he's got a 6cyl.



'bread trucks' are the most common available mechanical injection 4bt, paired with an auto that i cannot remember what is is (700r4?). Anyway, you can get rotary & inline mechanical injection in the $2500 range, however there are commonrail models, but look to pay $7k for that shit paired with a transmission

[Edited on October 1, 2012 at 1:00 PM. Reason : -]

10/1/2012 12:59:10 PM

smoothcrim
Universal Magnetic!
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there's an inline 5 2.7L cummins available in the older sprinters. i see the trucks sell for 6k, no idea on the price of the motor

10/1/2012 7:33:05 PM

Dr Pepper
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that's actually a mercedes engine

10/2/2012 7:30:34 AM

dustm
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Know anything about VW diesels?

10/2/2012 1:59:30 PM

Dr Pepper
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nah, my experiences are limited to the 12V cummins engines.

10/2/2012 3:51:22 PM

sumfoo1
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All I know is you take the turbo of a gas vw with exhaust mods etc and put it on a diesel with some injectors and such your at 200 whp an shit tons of torque.

There is a forum dedicated to tdis though.

10/4/2012 11:05:41 AM

Dr Pepper
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WILL DR. PEPPER BREAK 90MPH IN THE 1/8TH TONIGHT? OR WILL IT BE PEDAL PUSHIN' SPIN FEST WITH LACKLUSTER RESULTS




(possibly video to follow tomorrow)

10/4/2012 3:17:01 PM

sumfoo1
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Wee need videos!!!

10/4/2012 4:37:56 PM

Dr Pepper
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RT = .1116
60' = 2.20
330' = 5.7877
1/8th = 8.565 @ 88.81

Personal best! left at ~7psi, peak boost was ~51psi. unfortunately adam's phone was nearly dead so nogo on the vids. He got a vid of a previous run, but not sure of status... tried to launch at 10psi and it broke traction, let of and hit it again.

10/4/2012 10:28:35 PM

sumfoo1
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heart broken by no vids.

10/5/2012 6:51:24 AM

Dr Pepper
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haha, yeah. I felt sorry for the guy in the mustang that I paired up with for my 3 runs (Mach-1/auto/intake/exhaust/tune/drag radials)

- the first pass we were neck and neck the entire way
- second pass I broke traction while trying to stage with 10psi, let off at the green, and hit it again ~3 tenths later than him on RT... only to come blaring past him with an 8.69@87 to his 8.97@82. I was only hitting 35psi peak boost on that run.
- turned up boost regulator before last run and ended up beating him by 0.7955

10/5/2012 8:49:46 AM

sumfoo1
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well i have project badass funding approved

10/5/2012 11:10:17 AM

sumfoo1
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well i have project badass funding approved

10/5/2012 11:10:17 AM

Dr Pepper
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damnit, well, go ahead and 1-up me!

if I were doing it.... RCLB 4x4 CR, 48RE with big shafts, manual VB, triples and a good tune

10/5/2012 11:24:03 AM

sumfoo1
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not doing a diesel...

and i don't wanna 1 up your truck...

i have no words to describe how bitchen i think your short box diesel is.

I may fuck with the f150 if my first mod motor goes well but if i get a diesel i wouldn't go past a tune and maybe bigger injectors... cause i'd use the shit for boat/car towing and wouldn't want it to sit on the side of the road.

10/5/2012 11:28:29 AM

Dr Pepper
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bahhhhh

10/5/2012 11:50:20 AM

sumfoo1
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seriously though dude your cluster truck is awesome.

10/5/2012 3:49:01 PM

Dr Pepper
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http://www.youtube.com/watch?v=24QogqE4ajE&feature=youtube_gdata_player

my 8.69@87 to his 8.97@82 (he had a faster RT and 60')

lord knows what I would do if i could hold more than 10psi at the line

[Edited on October 9, 2012 at 9:59 AM. Reason : -]

10/9/2012 9:58:00 AM

Dr Pepper
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From Truck Jam 2012

10/31/2012 5:40:37 PM

sumfoo1
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It's weird seeing a graph that never crosses.

10/31/2012 6:03:17 PM

Skack
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^^ Dayum!

10/31/2012 10:36:02 PM

Dr Pepper
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^^foo1, never thought about that - interesting

I'd love to see the curve from a load cell dyno - on an inertia dyno the operator has to stand on the brakes to get it to spool. I'd imagine it would not be 'peaked' as much with the torque curve


peak hp run:
http://www.youtube.com/watch?v=Fb9VydcA4nI



[Edited on November 1, 2012 at 7:05 AM. Reason : -]

11/1/2012 7:04:47 AM

sumfoo1
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Yep you gotta hit 5252 for them to cross it's just weird for me seeing a graph that never gets there. You are right though a mustang or dyno dynamics would be a lot better for your diesel folk.

11/1/2012 7:37:29 AM

Dr Pepper
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^oh, ohhhhhh, I thought you meant the actual graph scales

11/1/2012 9:09:12 AM

paerabol
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So who amongst ye wants give my truck an ol' twice-over and help me develop a performance plan of action? I've got my own ideas from doing research here and there since I bought it but due to time and finances most of the work I've done is in situ or preventative maintenance.

I would appreciate eyes-on from someone with experience, not conflicting info from fanboys on internet forums. There are a few maintenance (troubleshooting) items too that I'd like some advice on, as well as general "this is how this shit works in a cummins" advice for someone still learning to work on diesels. I'm gonna be in a new world of salary come next summer so I'll be able to start turnin some bolts, but I won't be in Raleigh anymore and don't know if I'll have any good resources where I'm going.

I'm feeling lots of beer and a grill will be involved

Maybe jeepman's grill and definitely his beer

11/9/2012 10:10:10 AM

adam8778
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Where are you gonna be living next summer?? I'm sure Dr Pepper could give you a crash course if you were headed down our way.

11/9/2012 10:26:50 AM

paerabol
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I've got a few job offers but they all involve either going north or way west. Closest (and most likely atm) has me at Newport news shipbuilding in VA...where are y'all?

11/9/2012 10:41:39 AM

Dr Pepper
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^western piedmont, represent.

11/9/2012 11:52:12 AM

paerabol
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word, I end up that way from time to time...grew up on LKN, still got family around there. I'll get up with y'all before I head that way again

11/9/2012 8:14:22 PM

sumfoo1
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color me impressed
better footwork then almost any short throw shifted ricer i've ever seen.

11/19/2012 9:28:09 AM

Dr Pepper
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small upgrades coming around New Years!

12/21/2012 9:40:12 AM

sumfoo1
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Oooooohh do tell !!

12/21/2012 4:58:40 PM

Ragged
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A guy from works, friend of a friend,

This is what these idiots in Btown do. Smdh
http://m.youtube.com/watch?v=8MqiFM7AB78

12/22/2012 7:49:36 PM

Dr Pepper
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^that is complete and utter dumbassery. Fuck that mess.


I'm getting a billet compressor wheel and +100cc delivery valves (+100cc over what I'm currently running)

12/23/2012 9:22:23 AM

sumfoo1
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+100 cc of fuel i'm assuming....

12/24/2012 8:54:15 AM

Dr Pepper
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^oh, yes. i hate to admit I don't know the actual measurement, but the basic take is 1cc of fuel rate is somewhere between 1 and 2hp.

right now the plan is new comp wheel, new dv's, increase injection timing from 19deg to 24deg, and hopefully swap in my set of +60lbf valvesprings. My current setup benefits from lots of rpm, so I'm hopefully going to be shifting my peak power curve to a more usable range.

12/24/2012 10:10:42 AM

sumfoo1
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I'm starting to think my built to shit 393 stroker may NEED boost to keep up....

god knows i won't go nawz.

[Edited on December 24, 2012 at 11:52 AM. Reason : .]

12/24/2012 11:36:39 AM

underPSI
tillerman
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Quote :
"that is complete and utter dumbassery. Fuck that mess."


that was fucked up but it was also funny as shit.

12/24/2012 9:17:12 PM

Dr Pepper
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^if they were friends, and not so much of an audience... I would have laff'd

12/27/2012 9:04:40 AM

sumfoo1
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what if the one guy was just a huge asshat talking shit and the other guy said fuck it... hook'em up. And then took out his frustration dragin the bastard around...

i, personally laughed hysterically.

12/27/2012 9:44:13 AM

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