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Marine Injectors

M

Mike K3500

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Is there anybody here that can upgraded the O.E. Bosch injectors to the "marine" injector for a reasonable price ??

I absolutely refuse to pay the $ 850 + price tag that Heath has on his H.O. injectors !!

I already have some standard Bosch's but would like to see if somebody can install the Bosch marine nozzles and set the pop pressure to 2250 psi for a reasonable price ??

Mike
 
Check ebay for bosch marine nozzles and have a local shop do the work.
 
There isn't much[if any] gain by simply adding the marine injectors. Heaths HO injectors may be different from standard marine injectors. Pretty poor bang for the buck.[if you are paying extra for them] The IP determines how much fuel, not the injectors. The main difference is in the spray pattern. Marine injectors are for sustained high rpm[higher cylinder pressures] use as in a marine application. Most trucks aren't in that high of a rpm for long periods. Trucks can't get enough cooling to support the larger amounts of fuel that a marine engine can.
 
NVW said:
This listing has ended but are listed regularly.

http://cgi.ebay.ca/CHEVY-GMC-MARINE...r_Truck_Parts_Accessories&hash=item2a10906afe
Click to expand...

Thanks for the link, I messaged them and now awaiting for a reply.

bk95td said:
There isn't much[if any] gain by simply adding the marine injectors. Heaths HO injectors may be different from standard marine injectors. Pretty poor bang for the buck.[if you are paying extra for them] The IP determines how much fuel, not the injectors. The main difference is in the spray pattern. Marine injectors are for sustained high rpm[higher cylinder pressures] use as in a marine application. Most trucks aren't in that high of a rpm for long periods. Trucks can't get enough cooling to support the larger amounts of fuel that a marine engine can.
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Well, I read many threads about the H.O. vs. Marine vs. Standard.. The thing that has me most convinced in having it run well is having: fresh injectors, higher pop pressure 2200psi, and having the pop pressures matched.
I don't know if you had seen my "getting ready to start my project" thread, but I had come across a 310hp DB4 for a very very reasonable price and so I figured maybe it would work out all right with "marine" injectors.

I did see your thread on the pop pressure test stand that you had built and was going to message you and see if you would be interested in matching me up a set of injectors, or if you had any already matched up ??

Thanks,
Mike
 
How can you tell if you have them ? My 93 supposedly does but that was waste with a DB2 equipped truck. They do have weird #s on them. I think they are SS Diesels ones which would make me doubt them being anyhting more than rebadged stockers.
 
The # on Walts site matches the numbers on my injs...40hp gain BS, stay away from him even if the price is inviting. I see he lowered alot of his prices. Words getting out...
 
Mike K3500 said:
Thanks for the link, I messaged them and now awaiting for a reply.



Well, I read many threads about the H.O. vs. Marine vs. Standard.. The thing that has me most convinced in having it run well is having: fresh injectors, higher pop pressure 2200psi, and having the pop pressures matched.
I don't know if you had seen my "getting ready to start my project" thread, but I had come across a 310hp DB4 for a very very reasonable price and so I figured maybe it would work out all right with "marine" injectors.

I did see your thread on the pop pressure test stand that you had built and was going to message you and see if you would be interested in matching me up a set of injectors, or if you had any already matched up ??

Thanks,
Mike
Click to expand...

Mike, the PO of my '99 installed the Heath Marine Injectors, those and the ATT and Heath Programming. Honestly, I can't tell the difference, but suspect that the greatest influence on this engine has been the ATT and the Heath programming. My son now has the '95 in my signature along with Buddy's adjustable programming. He has rebuilt stock injectors from Badger diesel. Still needs the ATT and 4" exhaust. The programming makes a huge difference. The '99 has a stronger guttier performance than the '95 as they currently stand. The '95, even with it's 4.10 rear, gets a mile or two better on the highway fuel consumption. When it comes time for new injectors again, I'm going with stock Bosch, new or rebuilt, whichever is the best price at the time.
 
It's long been said that "Marine Injs" are a white elephant for our trucks but being that your using a DB4, I'd be curious as the marine injs were designed to be used with that IP.
 
Big T said:
Mike, the PO of my '99 installed the Heath Marine Injectors, those and the ATT and Heath Programming. Honestly, I can't tell the difference, but suspect that the greatest influence on this engine has been the ATT and the Heath programming. My son now has the '95 in my signature along with Buddy's adjustable programming. He has rebuilt stock injectors from Badger diesel. Still needs the ATT and 4" exhaust. The programming makes a huge difference. The '99 has a stronger guttier performance than the '95 as they currently stand. The '95, even with it's 4.10 rear, gets a mile or two better on the highway fuel consumption. When it comes time for new injectors again, I'm going with stock Bosch, new or rebuilt, whichever is the best price at the time.
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The problem with comparing your 99 or 95 to mine is.. Mine is a 93, no programmers or electronic DS4 pumps.. I have the "marine" DB4 mechanical pump and am planning on having a set of Bosch marine nozzles installed in Bosch injector bodies and pressures set to 2250 psi.

Acesneights1 said:
It's long been said that "Marine Injs" are a white elephant for our trucks but being that your using a DB4, I'd be curious as the marine injs were designed to be used with that IP.
Click to expand...

I too am curious to know if the marine injectors will work any better with the marine pump or not....
It would be nice if there were some knowledgeable members around the central Michigan area that could help time and run this thing to see what they think.
 
Bee careful with ebay vendors of injectors ALL of them, with regard to injectors many vendors use non Bosh innards on Bosh bodies, as to make "marine" injectors just requires shims and nozzle tips from std bodies. 2 vendors I'd trust for injectors Heath & Kennedy Heath's are direct ship from Bosh, IIRC Kennedy's are Bosh/Mercedes combinations .

I have Heath h/o's now, had Kennedy's at one time swapped to Heath after I had 120K on the Kennedy ones. General rule of thumb for injectors is 100K to replace them, IMO without programming to request the fuel & timing to make use of tweaks to injectors h/o injectors not worth the extra $$$.

99.99% of 6.5 guys don't need h/o injectors IMO that is the last piece of the performance quest one needs to go after, I did injectors 1st & was not impressed. I'm not sure what h/o's on a mechanical IP would do even the DS4 but good injectors cost, they really do need to be pop tested & flow check so all squirt same delivery volume & pattern.

Most of the economy h/o's out there are assembled from parts and not tested for delivery injector to injector, also import tips don't last well, I bought a set of tips for my TDI from ebay looking for the good deal they did not last long. Not saying you can't find less expensive ones do your homework & make sure vendor you pick can be trusted for the quality advertised.

If you want to; you can build your own h/o injectors, but you will want to build or buy a pop tester 1st to verify spray & delivery will be equal cylinder to cylinder. genuine Bosh parts aren't inexpensive, start building injectors with time & parts you'll see why h/o injectors built in low volumes are higher in cost than one would expect for the function they serve.

As far as Michigan members check out the member locator thread, both Slim Shady & 1twisted one are in Detroit area and are VERY knowledgeable when it comes to 6.5 stuff, shoot them a PM
 
Have you checked with PENINSULAR for injectors? They were the pioneers for the DB4 6.5 pump way back, and I'm sure they wopuld carry true marine injectors or know where to get nozzles for them since this is what they build and use in there engines.

As for the marine VS truck nozzles, I understood the differrence was that marine nozzles are a pop design and the truck ones are a chatter design. Truck nozzles are meant to spray only at a certain pressure which means you maintain a more uniform mist over a longer period of time for better mixing with the air charge. Marine injectors are of a pop design hence the higher preset pop pressure. Once they hit a certain pressure they pop and dump the fuel instead of chatterring and spreading it out. the differrence was for sustained high RPM use you need a shorter duration of spray to keep the fuel charge from coming after the ignition event has begun. Basically the marine injectors were designed for a shorter burst of fuel vs the trucks more drawn out one.
 
THEFERMANATOR said:
Have you checked with PENINSULAR for injectors? They were the pioneers for the DB4 6.5 pump way back, and I'm sure they wopuld carry true marine injectors or know where to get nozzles for them since this is what they build and use in there engines.

As for the marine VS truck nozzles, I understood the differrence was that marine nozzles are a pop design and the truck ones are a chatter design. Truck nozzles are meant to spray only at a certain pressure which means you maintain a more uniform mist over a longer period of time for better mixing with the air charge. Marine injectors are of a pop design hence the higher preset pop pressure. Once they hit a certain pressure they pop and dump the fuel instead of chatterring and spreading it out. the differrence was for sustained high RPM use you need a shorter duration of spray to keep the fuel charge from coming after the ignition event has begun. Basically the marine injectors were designed for a shorter burst of fuel vs the trucks more drawn out one.
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Well now.

That's an interesting tidbit of info I have never run across.

Can you remember where you read that Ferm?

I wouldn't mind looking that info over myself....
 
Thanks for the advice, but I had already sent all my injectors to Barry "bk95td" he tested all of them and took the best 8 and rebuilt them with genuine bosch "marine" nozzles, and set the pressures to 2250 for me.

I have pics of them in my "getting ready to start my project" thread.

Mike
 
great white said:
Well now.

That's an interesting tidbit of info I have never run across.

Can you remember where you read that Ferm?

I wouldn't mind looking that info over myself....
Click to expand...

It was WAY back at the place back when Diesel pro and the texas diesel guy were big 6.5 posters.
 
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