Okay, I know that without engine mods the marine injectors are a complete waste of $. Also the only real marine tip is a Bosch.

So really it would be new Bosch Marine injectors (no mystery rebuild).

From Heaths website: (site sponsor so I think a good quoteable)
"These add 43 hp when added to engines running our Max-E-Tork ECM or Eprom programming"

Right now the trucks have SSDeisel Air Intakes and big exhaust kits. = Good airflow

I plan on adding a Chip from Kennedy to keep the vacuum system. Probably "race" version since it is for the Suburban which generally only hauls 1000 pounds cargo most of the time. And a full set of guages to monitor the party.

... Even if I get 20 extra out of the injectors it would be worth it for the merginal price increase. The price per HP is there.

If I am on crack just let me know as well ;)

Thanks!

You can keep the vacuum system with the Wester's and Heath tunes as well. I learned this a little too late, like after I made my choice. Now you know before, so you can make a more informed decision. The thing about Heath is they have one tune, it's a good one. Wester's has 2, plus they'll tweak certain things if you ask. Kennedy will change stuff if you ask also. I can't give any opinions, because I'm still waiting on version 2 of my Kennedy tune, so far, no one on here has one (or at least no one has spoken up) since he stopped having Wester's do his programming, so I'm the Guinea pig. If you are thinking of Kennedy, you might want to hold off until I get mine and post a review. I promise it will be honest and fair, I have nothing to gain or lose, except my money and my motor!:eek: If you search my posts, you will find my initial review, from the first reflash I was sent, just remember when you read, I was warned by Kennedy that it was all new stuff, and he was very honest with me, I still ordered, that's why I'm not bitching.

Good info! I thought they were desinged for the mechanical WG control.

So did I, until someone posted their results with the vacuum wastegate controls.(read my edits above)

Good edits!

Interesting that Kennedy is now using thier own tune. I will be curious to see the difference as well.

If you can hold off long enough I intend on putting in marine injectors in September and will be off to the track to put them to the test....

Consider this - you won't get XXhp increase at 1500rpm, or 1700rpm, or 2200rpm, or 2500rpm - normal cruising working range - so, how much time will you be flogging the engine at 3400rpm, full throttle, full load?

If working the engine hard - towing, hauling - you would see the most improvement with a charge-air cooler - lets you realize\maintain the factory power and any upgraded power under all circumstances.

I suggest holding off till you get more practical\street input - such as Chris' B4\after testing

I think Chris will have to make sure he does a before and after HO/Marine injector run.

Dave

You can keep the vacuum system with the Wester's and Heath tunes as well... .
It does. So it was on mine with Heath reflash, but with lot of black smoke on acceleration.
Don't know if it's because of a tired turbo
However it's a true fact that the turbo master makes a night and day difference and heavy black smoke went back to just a puff when I put the right foot to the floor...

Marine injectors (BOSCH reman) will be on truck august 12, will post results...

As far as I know, no one here has run their good stock injectors on a dyno and then installed the marine injectors to verify hp increase. Fuel is regulated by the pump not the injectors. As a side note: the stock injectors WILL flow more fuel than the engine can handle. Just need the pump to do it.

I had a heath computer, heath waste gate actuator and exhaust in mine before I added the BOSCH marine injectors. I did notice a significant difference but like gmctd said it was only while the happy foot took control. Didn't effect the mileage so it's kind of the best of both worlds. I haven't towed with them yet though. Definately the next up for me is an IC.

I need to move fast on the injectors as the Suburban started running a little rough last week... I suspect the original injectors are dying at 145K.

... The GM-8 is worn out as well and needs replaced.

... Plus a good time to install full gauges.

The "chip" can wait. I will keep my eyes peeled as to what happens on the new Kennedy chip.

I agree that it seems that the IP will dictate the flow the injectors receive. The Marine versions have kind of perplexed me as to how they flow more over a stadard injector since they do not control fuel volume.

GMCTD - good point on usable power. Rarely do any of the trucks go over 3K rpm. Nor do we "hammer" them on the road anyway. Yes, we work em a little, but not nearly as heavy as most of the guys here.

Thanks!

The Marine versions have kind of perplexed me as to how they flow more over a stadard injector since they do not control fuel volume.

i bet it's because how their nozzles are built and set...:D

For the record....I have run the truck stock, will be running it with the chip, and then run once more with marine injectors....

BTW - my truck sees redline more often than not...

BTW - my truck sees redline more often than not...

Me no think that's very good for truck. :)

As far as I know, no one here has run their good stock injectors on a dyno and then installed the marine injectors to verify hp increase. Fuel is regulated by the pump not the injectors. As a side note: the stock injectors WILL flow more fuel than the engine can handle. Just need the pump to do it.

I have thought a lot about this also. No one has ever posted dyno numbers or e.t.s for a set of NEW stock injectors vs. NEW marine injectors. It's always a comparison of your worn out stockers vs. NEW marine injectors. With all of the testing that Heath has done, do you think our friend from Heath might be able to supply us with these numbers?

Me no think that's very good for truck. :)


:blahblah:




:lol:

i am under the impression that the marine injector nozzle is larger than a stock one so once the engine is running and the pump is working, you normally will pump more fuel and therefore will notice a difference in performance once you are turning more RPM's. not sure if i am on crack? just relating what i am told and what i hear. it also makes sense to me. this pertains to my truck which has a mechanical pump and is not controlled by the computer in the '94's and up.

The PCM tells the pump how much fuel to send to the injector, how is something downstream of the pump going to affect fuel rate? In a mechanical truck, the pump itself is the regulator of the fuel, so I still don't see an injector magically multiplying the amount of fuel sent to it. Now, if you want to make the case that the higher pop pressure creates a little better atomization of the fuel, I might buy that. I ain't buying the quantum physics of injector fuel rate multiplication! They may even have a higher flow rating, but if you're not pumping that extra fuel to them (and it has to be more than a stocker can flow) they just can't make that much of a difference. If they did, someone that sells them would post up a dyno sheet comparing the two in an identical setup. They don't post numbers because they know they don't exist.

i just purchased marine injectors from stanadyne. am i to assume that these are not marine types if bosch makes the only marine injector for the 6.5?

Okay, I know that without engine mods the marine injectors are a complete waste of $. Also the only real marine tip is a Bosch.

So really it would be new Bosch Marine injectors (no mystery rebuild).

From Heaths website: (site sponsor so I think a good quoteable)
"These add 43 hp when added to engines running our Max-E-Tork ECM or Eprom programming"

Right now the trucks have SSDeisel Air Intakes and big exhaust kits. = Good airflow

I plan on adding a Chip from Kennedy to keep the vacuum system. Probably "race" version since it is for the Suburban which generally only hauls 1000 pounds cargo most of the time. And a full set of guages to monitor the party.

... Even if I get 20 extra out of the injectors it would be worth it for the merginal price increase. The price per HP is there.

If I am on crack just let me know as well ;)

Thanks!



i just posted a response to this post. i just purchased stanadyne marine injectors for my 6.5. are you saying they are not marine injectors because bosch makes the only marine injector? i will have to look into this one. now i am confused. pass the crack please! ! ! ! ! !

watch those stanadynes carefully after you put them in. I just went through a saga with injectors. Long story short, I broke one nipple off a new Delphi I was installing. Bought a single Stanadyne (not marine) and put it in. Within 5 min of driving around, it was blowing return lines off its nipples. I unplugged one side and tried to blow through it. Couldn't even get a bubble out the other side:mad: . Dam thing was machined/assembled wrong. As a matter of fact, I'm returning it in a couple of hours for refund. Ended up patching my broken Delphi with a pin and some JB-weld in the hole where the nipple used to be and used it as the rear one on the driver's side.

i just purchased stanadyne marine injectors for my 6.5. are you saying they are not marine injectors because bosch makes the only marine injector?

I just purchased Bosch Marine. I saw those Stanadyne "Marine" too and was very interested in purchasing them.
Posting here to get advice, DP warned me (thanks to him) that Stanadyne never made Marine injectors. I so wrote to Stanadyne, and received the following reply :
"These particular injectors are made for the GM 6.5L Turbo engine. These
are not specifically designed for a marine application; however, the
6.5L engine is used in some marine applications, so these injectors
should work."

:think: mmmm? So, as I get a reflash from Heath, I choose Marine from Bosch, if not, I should have choose new Delphi.

My 2 cents.

Stanadyne has never made a 40 hp marine injector.

They have made two injectors for the standard 6.5 engine

P/N 37818 6.5L turbo
P/N 38272 6.5L non-turbo

Someone on ebay is falsely selling 40hp Stanadyne injectors.

Yah, what they said about the Bosch Marine. I had to do a search to find out that info from DP and Mutuva.

I ended up ordering A LOT of stuff last night for the trucks.

Suburban gets:
- New Bosch regular injectors.
- Turbo rebuild kit for the GM-8... This could be smart or stupid, we will see as a DIY project.
- Full gauges: Bully Dog Trans Temp, Isspro Pyro pre-turbo, and Isspro Boost

Sierra gets:
- Full gauges as stated above
- Potentially a GM-8 upgrade from the GM-6.

Again I will hang tight on the Chips until the new stories are told at the strip! :)

I recently rebuilt both motors in my trucks and used marine injectors but to get the gusto one should go with the exhaust as open as possible fab a new air filter housing not just throwing a k&n under the hood hooked directly to the turbo but enclosed away from the heat under the hood with as much fresh air as possible and a intercooler boost and temp gauges first off throw the stock fuel pump it the tool box get a larger psi and volume use the 180 thermostats make a mechanical turbo master make a boost fooler fab a fsd/pmd cooler and remount it to a cooler spot keep all the filters clean use a gm 8 turbo do the optical bump and feed the beast and a reflash or chip i know this sounds like alot but its not that bad alot of above can be self made and by going thru the threads hear there are a great amount of info and how to's thanks to lot of good people i ve done 75% of what i stated above a it gets better as i go! more power better mpg

Pillow can you tell me about how much the full set of gages were?