What do YOU think about injector ballancing???

[Dirk]

Originally Posted by SCUFFY828

to add to this , im not sure and i dont think factory injectors are balanced , i may be wrong but i doubt they are , i would think that high powr level than stock would be good to do, but as far as just swapping a factory injector for one thats worn, it may not be necesary

None of the T444e style injectors are "balanced" from the factory. I can not comment on the VT365 injectors.

And to add, if the option to balance the injectors is there, DO it. I don't feel that it is necessary for injectors under *160cc unless larger than stock nozzles have been installed.

*There *MAY* be a cylinder pressure issue with trucks pushing PMR's.

[binder man]

Thanks Dirk I was wondering if it would affect cylinder pressures. I assumed it would and am not real sure why seeing as how I don't have any idea on tuning.

[Chewbacca]

Originally Posted by Dirk

None of the T444e style injectors are "balanced" from the factory. I can not comment on the VT365 injectors.

And to add, if the option to balance the injectors is there, DO it. I don't feel that it is necessary for injectors under *160cc unless larger than stock nozzles have been installed.

*There *MAY* be a cylinder pressure issue with trucks pushing PMR's.

That's good info right there. Thanks Dirk!

[DZL JIM]

My opinon is as such, I've said it before but I'll say it again:
IMO, stock rebuild or even Stage-1's should be OK w/o balancing. Reason: How many trucks are running on the roads that had an injector or 2 go out and they had those injectors replaced? I don't know and don't expect to get an answer, but it's a lot of trucks, and you can't tell me those trucks run for crap or are going to blow up because of it.
IMO, when you go larger, Stage-2, 3 or whatever, the more fuel you push, the more there's a possibilty for each injector to be off a bit, thus balancing might help then.
I've always said that balancing injectors is never a bad idea. If you want the absolute best running injectors money can buy, then pay the extra $$$. But is it necessary? IMO No.
And of the hundreds of customers I've dealt with over the past 3 years, only 2 I've talked with wanted my injectors balanced. None of the other customers wanted to pay the extra $$$. At least in discussions with me.

What causes out of balance? IMO, from what I've seen, it has to do with any single or combination of:
1) Worn nozzles.
2) Worn Plunger & Barrel assemblies.
3) Inadequate Poppet Valve travel due to wear.
4) Variety of lengths of Intensifier Pistons (only really noticeable at WOT).

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Last edited by DZL JIM : 08-27-2008 at 03:57 PM.

[Dirk]

Needless to say, I'm subscribed. Curiosity is KILLING me to see where this goes...

[strokin_early_99]

That 1 injector that was flowing more fuel had a bad nozzle and was flowing in excess of twice the flow rate of the other injectors. It ran like crap as well.

[JimTJr]

Originally Posted by kerickson73

GTS, didn't you get ran off from NWdiesels.com?

And The Diesel Garage, And PSN, lol,,,,,

[choctaw]

Originally Posted by JimTJr

And The Diesel Garage, And PSN, lol,,,,,

How in the Heck, can anyone get run off from PSN?

[gtspowerstroke]

Originally Posted by kerickson73

GTS, didn't you get ran off from NWdiesels.com?

Nope. Though I haven't been on there in awhile. Are you here to cause problems or contribute. Like I said in the begining I just want opinions on the subject not debate or arguments.

Binder I would agree that the factory doesn't ballance the injectors as a set. I've never talked to anyone at the factory to verify this but they don't sell them as a set of 8 per se so I don't think that's the case. I think the only real ballance they do is make sure all the specs are within tolerance and call it good.

Reportedly the PCM will compensate up to about 15% difference in flow on the injectors. Or more accurately 15% variance in cylender contribution. I have not verified this but it's what I've been told. But who wants their whole set of injectors being drug down because one isn't contributing as much as the rest?

Jim thanks for your thoughts on this. I was hoping you'd chime in! I do have to say I'd agree with what you said about there being a ton of trucks on the road with a bad injector or that have had a bad injector replaced. I think a lot of times the performance is hindered but it's so little over such a period that the person never really feels it. Then after they get their injectors rebuilt or replaced with new they notice just how much they lost.

Stroking I had a funny feeling that was the case. If it is constantly dribbling fuel from a stuck pintle or a bad o-ring the fuel that is in the cylender is displacing air and will greatly increase compression. This is why when you have a bad lower o-ring it sometimes knocks so bad. It's just that that cylender has way more compression. You've seen what this does as well as CSIPSD has when his pistons were toasted from it.

[gcop]

stay on topic boys....