Engine/Transmission (1998.5 - 2002) Help with injector selection!

[SCox]

I have a stock 5sp standard cab 3500 4x4 that I am in the process of adding a little power to, as this truck is going to be used for a lot of towing. What I have so far is AFE stage 2 intake, 4" exhaust, fass 150, and a TST Power Max. My question is I would like to run 100 to 150 hp injectors, but I want a injector that is going to help keep my egts down. I don't mind spending some money on them, but would like feedback from you guys who have towed with upgraded injectors and what you recommend.



Thanks guys!!!

 

[rotohead]

I'd like to upgrade too and would be interested the latest info.

 

[AWeiman]

i have 50's in my 01 and they are not an issue with high egt's. with these and the edge on level one it will tow very well, but even on stock setting the injectors were a good upgrade. i thought about 100's but decided againts it because i tow regularly and i still have a stock clutch and didnt want to have to upgrade that. if you want to go anything above 120hp injectors you should consider a turbo upgrade. like i said thats why i stayed with 50's it is very safe with a stock clutch and turbo.

my brother talked to the guys at schield diesel before we got the 50's and they told him that 100's were safe on a stock turbo.

 

[Harlacher]

BDs (RV) 50 horse power injectors ran in my truck for about 150,000 miles with no problems. Still running fine when I took them out and upgraded to 150 hPs. THey are really easy to change to, so don't let someone charge you an arm and a leg to do it if you are doing it yourself.

 

[Midnite]

I have Mach 1s which I think are a 60 hp injector. The Mach 1. 6s are very popular also, and I believe those are a 90 hp injector.

For the level you're talking about you should probably look into a new turbo if you still have a stock HX-35, or you'll keep having to turn your box down or be very careful with your right foot.

 

[DIESELWRKS]

step up with a bigger turbo and some mach 2's

 

[RAJohnson]

I am interested in what people have to say about injector selection as well. Putting in a new VP44 this week and want to change injectors as well, (stock injectors at this time). With all of my upgrades so far, I was thinking about 75 to 100hp injectors from DDP, BD, RV, Mach or others. Will these work out for adding milage and fun factor, milage when I drive it like I didnt steal it. :-laf I do tow occasionally, and I am not worried about turning the comp off when I do to control EGT's. Not interested in changing the turbo at this time. How large of injectors will a stock turbo handle.

 

[TRoe]

I don't know how much this will help, but what I have done with my 02 5spd might give you something to chew on:

Let's call this a baseline. FASS, stock turbo, stock exhaust minus the muffler, Edge Comp on 4 (of 5 settings). I could reach 32psi but made a fair bit of smoke and could reach 1400F just booting it up to speed on the highway with no trailer and no load.

I live 10 minutes from the BD home base so I had them add their 'towing' twins and their turbo back 4" stainless exhaust with muffler. Now with the Edge Comp on 5, I could reach 37psi under sustained load (mountain passes with approx 6000lb total trailer weight) with way less smoke and max out at 1170F.

During some surgery at BD for other things, they added their 50hp injectors. Under sustained load I can reach 53psi and go no higher than low 1200F EGTs.

Twins sure aren't cheap, but the EGTs are sure excellent when the engine is under load.

Hope this helps.

 

[bromano676]

you don't have head gasket problems at 53 psig

 

[Ncostello]

Is that a question or a comment?

 

[bromano676]

Question How do you not have a head gasket problem at 53psi

 

[TRoe]

Uh... nothing showing up yet. Actually, hopefully you won't mind the hijack, but what are the symptoms when something does happen? And how expensive is the prevention? Switching to studs, I assume?

 

[Sticks]

Uh... nothing showing up yet. Actually, hopefully you won't mind the hijack, but what are the symptoms when something does happen? And how expensive is the prevention? Switching to studs, I assume?

ARP Studs are not cheap, neither is a head gasket set.



Symptoms will be one or more of the following; overheat, overflowing coolant bottle, coolant leaks around the head, white smoke that smells like coolant, and WCS, coolant in the oil.



Now "They" say (whoever "they" are) that the stock head gasket and bolts are good to 45+/- psi boost, and with studs you might get to 60psi.



I opted the safe route when I put my twins on, and got the studs and 120hp injectors. I have yet to break 50psi, and rarely break 40. I have not dynoed my truck yet so I have no idea what my total HP/TQ is.



Now I went for a loooong time with 100hp injectors and an Edge EZ then Edge Comp on stock turbo and exhaust. My savior for the mountain passes was the Snow Performance Water/Meth injection.



It works as advertised. It is so cool to watch the EGTs drop with the cruise control set as you are pulling a hill when it turns on. Don't ask me about mileage with the W/M injection. It is all a matter of how long your truck runs at the boost pressure the system turns on at.



For me, 5 gallons of 50/50 water to methanol flavored windshield wash fluid would get me from Denver, over Eisenhower on 1-70, and up Gore Pass (west of Kremmling) unloaded, and back home again with a load of firewood - 300 miles... with my old setup, and that was manually turning the system on when my EGTs would hit 1100 on the steeper/longer grades. NOTE - I have one of the first run Snow Perf kits from 2003-2004. Now they have kits that are multi control including EGT threshold.



If you don't have, or want to dump another $5k+ into your truck, then go with a bigger or hybrid turbo with the larger injectors, and a Water/Meth injection kit.

 

[jkidd]

With a turbo upgrade you can do a lot of injector. With out one and your box you are left with not much room if you want the turbo to last.

Do some 100hp and a super B. You can get it for about $1600 or less if you know where to look.

 

[Harlacher]

I just got a set of 150s for $660 from Thoroughbred diesel (after core exchange). They are the cheapest for most everything.

 

[Vaughn MacKenzie]

Question How do you not have a head gasket problem at 53psi

The answer is twins. . . less drive pressure. 53psi with smaller turbos often means a blown head gasket. If I had the $$ I'd likely do the BD set, everyone I've heard of getting them are very happy with that setup.

 

[Harlacher]

I have the BD twins the 150 injectors and still starving for fuel.