Just had the 4" exhaust installed along with the 5" chrome tip, way too cool!!! Pro Flow was the name. Tried a couple of 0-60's but ended up with gaining only 1 second BUT... once she's throttled up there seems to be alot more power! The exhaust is a D'max 4" upgrade customized to fit my 6.5 with a little fabrication. New 3" downpipe swedged right to 4" and routed out the back, no muffler and no cat, nothing but clean growling sound and its really not to loud, many gassers are louder with a muffler for those that want to know. And i can really here the TURBO spool up and down... very sweet, can here that from a couple of blocks away. Here's a couple of pics of it. I've also included a link to a short video file both before and after the install for those that want to here it for themselves, hope this works.


http://www.dieselplace.com/forum/uploads/2F7_Untitled_0034_0003.jpg


http://www.dieselplace.com/forum/uploads/685_Untitled_0034_0007.jpg


http://www.dieselplace.com/forum/uploads/B4A_Untitled_0034_0008.jpg





Exhaust Videos (http://www.sweetssyndrome.com/chevy.htm)


Edited by: CanadianRigger

hey somethings wrong, they didn't crimp that factory pipe to spec.


http://www.dieselplace.com/forum/uploads/CZ2_pipes.jpg


Nice pipe.


I took my speakers apart or I would listen to the recording.Edited by: quantum mechanic

If my memory serves me right, i think yours was a lot more smashed in than mine. Maybe G oofy and M ickey learned something over the years. http://www.dieselplace.com/forum/smileys/HiHi.gif

Geeez, what a difference! Very nice!

I can't hardly wait till I get my 3" all the way out no muf no cat

Oh man I gotta listen to that again :)


QM, your really missing out brother.

I thought it was funny when i went by the Chevy dealer to get some info, parts guy said you could drive a Volks wagon in there...lol


Now all i need is for this thing to build some boost and give her some more fuel. Anyone think hi pops will crater my IP?

HI POPS are a must in my book, no risk in damaging the pump, DS4 is very rare to have hard start hot complaints like most 4 plunger pumps, and it can easily stand the load. By the way, the optic adjustment increases your cranking delivery quite a bit too, but you won't have a problem with them at all.

how much has your mileage dropped since you went with the hipops? i will probably invest in new injectors this winter since im over the 100,000 mile mark and figure that these are the factory ones.





is that a chrome or stainless steel tip? i cant decide what to use when i get my 5 in tip. i have had chrome in the past. you really have to keep em clean or they rust so darn easily.Edited by: steiner43511

mileage drop from Hi-Pop injectors? Never heard on anyone losing mileage, and if your replacing an old set with them, you should see an improvement in mileage.

i just figured mileage would go down a little since a little more fuel is being injected.


when my buddy got bigger injectors for his cummins, he lost 3 or 4 miles to the gallon.

Steiner,


Stainless Steel.

i just figured mileage would go down a little since a little more fuel is being injected.


when my buddy got bigger injectors for his cummins, he lost 3 or 4 miles to the gallon.





Do high pops inject any more fuel? I thought you had to get high flow injectors for that.

Hi-Pops just have a higher opening pressure, makes your injection duration shorter. Same injection quantity, it just comes in a slightly quicker blast, and the higher pressure can help better atomize the fuel. We get lots of customers, particualrly with Dodge trucks that always want the '215 HP' nozzles in their new injectors even if their truck specs the 185 Horse tips, so all we buy is the 215's, but we tell them don't expect to see a change in power. The injectors job is not to meter the fuel, thats the pumps job, all the injector does is deliver the fuel its given.Edited by: Texas Diesel Guy

What did the high pops run that you got, TDG?


And didn't you read that comparrison of oil filters where fram was the bottom of the heap? They might of been good a few years back but offshore manufacture and cheap construction have brought them down a few pegs.

where did you get your hi-pops, tdg?


and what about the kennedy hi-pops? they say they are high flow and high pop? pennisulars are also high-flow, high-pop.Edited by: steiner43511

I pulled my injectors, cleaned them and reset the opening pressure to 165 bar, the were a little low when I pulled them, down to 145. I chose 165 because thats just above top spec 157, and after they run a while, heat up and cool down, they will settle around the 160 mark.


I don't know much about what Kennedy sells, so I'll stay off of that, but Peninsular makes a lot of outlandish claims, like their High Output DB4 pump for the 6.5, no such animal, its either a DB2 or a DS4, there are NO 4 plunger 8 cyl heads, or cam rings. A plain jane 6.5 injector, Bosch, Delphi whoever, has no problem flowing as much fuel as the pump can deliver to it. As I mentioned before, injectors job is not to meter fuel, a 'high-flow' or 'bored' injector would require actually boring out the valves and recutting the needles. If they do this, its unneccesary, it can't possibly keep the same spray pattern which is mated to the pre-chamber. A diesel injection system consists of everything from supply pump, to injection pump, to high-pressure line length and ID, and injector geometry opening pressure and spray characteristics. If you change the geometry, you affect the rest of the system. In short, I'm completely unimpressed with what they are selling, not to mention their prices are sky high.


Don't believe me, ask a machine shop about building up an 18:1 6.5 Long Block, ask a turbo shop about turbo upgrades, and ask a fuel shop about your pump/injector upgrades and compare prices and see what they say about Peninsular's claims.Edited by: Texas Diesel Guy

i believe you 100%, i trust your word. i guess i need to find a high pop that is not high flow. i dont really have the time to pull my injectors and send them into a shop to get them redone. i would be better off just buying some new ones.


how easy is it to take a brand new stock injector and increase the opening pressure? would a fuel shop be able to do this for a reasonable price?

How did the exhaust change affect mpg? What did you have to do to fabricate that in?

Any shop should be able to accomidate your request by changing opening pressure, but it requires dissassembly and cleaning and you may need a new set of valves, springs, crush washers etc. Basically, you will be paying for a rebuild and having the opening pressures just set higher.

ALYESKA RED (OLD ALYESKA TRUCK)


Ain't heard those words in a LONG time. sense I left The Great State of ALASKA. D@&* I miss her.

How did the exhaust change affect mpg? What did you have to do to fabricate that in?


Dunno, never checked it before and didn't check it after. I drive about 150 miles/day back and forth to work and the truck idles alot at work. I have an aux tank in the box and go for 4 or 5 days between fill ups and don't pay for much fuel.

I would sorta wonder at why Stanadyne would advertise and sell a DB4 40hp\cylinder injection pump if none were available.


Looks like a DB2 - cam ring don't care whether it's got two 180deg opposite rollers or four 90deg opposite rollers, as in the DS4 - still only takes 8 ramps to do the job, one every 45deg.


Just twice as much fuel per plunger stroke.......


Probably conforms to the old theory - to make more power, dump more fuel and air into the cylinder(s).


Whaddaya think?Edited by: gmctd

I pulled my injectors, cleaned them and reset the opening pressure to 165 bar, the were a little low when I pulled them, down to 145. I chose 165 because thats just above top spec 157, and after they run a while, heat up and cool down, they will settle around the 160 mark.


I don't know much about what Kennedy sells, so I'll stay off of that, but Peninsular makes a lot of outlandish claims, like their High Output DB4 pump for the 6.5, no such animal, its either a DB2 or a DS4, there are NO 4 plunger 8 cyl heads, or cam rings. A plain jane 6.5 injector, Bosch, Delphi whoever, has no problem flowing as much fuel as the pump can deliver to it. As I mentioned before, injectors job is not to meter fuel, a 'high-flow' or 'bored' injector would require actually boring out the valves and recutting the needles. If they do this, its unneccesary, it can't possibly keep the same spray pattern which is mated to the pre-chamber. A diesel injection system consists of everything from supply pump, to injection pump, to high-pressure line length and ID, and injector geometry opening pressure and spray characteristics. If you change the geometry, you affect the rest of the system. In short, I'm completely unimpressed with what they are selling, not to mention their prices are sky high.


Don't believe me, ask a machine shop about building up an 18:1 6.5 Long Block, ask a turbo shop about turbo upgrades, and ask a fuel shop about your pump/injector upgrades and compare prices and see what they say about Peninsular's claims.





I guess Stanadyne doesn't know as much about their products as TDG does. http://www.stanadyne.com/new/ppt/ppt_db4.asp


You choose who to believe.

Is that a direct replacement for my DB-2 on my 93? I didn't see a price.

Stanadyne's website says, they are capable of making 4 5 and 6 cylinder DS pumps, but guess what, the ONLY DS pumps are 8cyls, just because the certainly could make a DS/DB2/DB4 pump with X # of cylinders doesn't mean they exist, try and find a 5 cyl one.

Setting the pressure up on injectors will not improve performance. In some cases it may be detrimental to the fuel system. The higher pressure will increase the the load on the injection pump. It will retard the start of injection (maybe in microseconds). It will not increase the amount of fuel injected, if anything the volume may be reduced. Higher pressure in some systems can cause cavitation due to the rapid fall in pressure after injection. Setting the pressure up sounds good but it will require more work to generate this pressure. The engineers would have set the injectors way up if that was all that was necessary to get more out of the engine.


Sometimes lowering the pressure will increase fuel output, advance timing, and present less of a load on the system. Catch is the nozzles will burn out quicker. The pressure has to be high enough to prevent the needle from popping off it's seat when peak combustion is taking place.


I've experimented with nozzle pressures on the test stand while the pump was running and have had mixed results in fuel output. Best to leave pressures alone.

165 bar is not high enough to cause problems, opening pressures natually settle a little in the first few heat/cool cycles. Going higher than that, certainly can cause problems.

...Peninsular makes a lot of outlandish claims, like their High Output DB4 pump for the 6.5, no such animal, its either a DB2 or a DS4, there are NO 4 plunger 8 cyl DB2 hydraulic heads, or cam rings.
I know this is an old thread, but I'd just like to say that Peninsular has removed their ad for a DB4 'hi-performance' pump for the 6.5. Wanna know why? Because they don't exist, just like I said.

and here i thought you brushed the dust off this thread just to see my pipes again..:D

LOL, thats still a sweet vid ;)

Peninsular makes a lot of outlandish claims, like their High Output DB4 pump for the 6.5, no such animal, its either a DB2 or a DS4, there are NO 4 plunger 8 cyl heads, or cam rings.
Stanadyne offers a 4 plunger DB2 for marine applications. It is mechanical and is rated at 310 HP. @ 3,400 RPM.

This is the pump Peninsular is using for those wanting to know.

Do you have a link that shows this pump that doesn't exsict???

All info is at the shop right now. I took a quick look at the specs and counted the plungers just to be sure. Here is a link to one of there engines.

http://www.simplicity-marine.com/Peninsular/Peninsular_400TA.htm

http://www.peninsulardiesel.com/400tai/400tai.htm

Stanadyne offers a 4 plunger DB2 for marine applications. It is mechanical and is rated at 310 HP. @ 3,400 RPM. The marine 310Hp pump is a DB2 833. But of course, your going to make me bring home a copy of SSI and show it to everyone....

The "Marine" 310 hp. 6.5L injection pump Part Number is DB2831-5722.
The pump uses a four plunger rotor with .310" diameter plungers. Full load is 3,600 rpm. The test plan shows 3,500 rpm 73.5 to 76.5 mm/3 maximum output. High Idle is 4,100 rpm.

An important note to these specs. The calibrating test stand nozzles pop at 3,000 psi whereas the standard automotive standard nozzle is 1,700 psi. So when comparing apples to apples the marine pump will put out slightly more when using the lower pressure nozzles.

Cost? New pump suggested lists at $1,695.43

Can you convert a DB2? Yes, but might cost as much as new.

Can it be turned up? 10% would probably be safe bet.
Note 10% = to 84.15 mm/3 with 3,000 psi nozzles

Where can I get it? Local authorized Stanadyne fuel injection shop.

Can I convert my Electronic Pump? No, only mechanical.

Will it work on my truck? Being a Marine application you have to becareful not to float the valves.

Bigger turbo, 18 to 1 pistons, intercooler, fat wallet required for best results. Some black smoke may interfere with rear visibility under some circumstances. Use caution when climbing stiff currents. Exhaust temperatures may reach new highs for a brief period of time before piston reliefs kick in. Stainless piston return springs mandatory in marine applications, however, high temper HSS springs can be substituted in non-corrosive environments.

Contrary to earlier posts 4 plunger DB2's do exist.

Next segment; How to install a John Deere four plunger rotor in your stock DB2 head.

so how long has this pump been on the market??

Test plan dated 09-07-01 so I'd say since 2002 would be about right. Test plan does not list customer's name which is somewhat odd. And customer's part number is 05722

Who's going to be the first to try and make it work?

I would suggest using an aneroid on the pump to cut down on the smoke. There is an aftermarket company that makes one for the Stanadyne pump. It might work on the DB2 automotive application. Need one that is in-the-cab adjustable. Never know when your neighbors will want you to fog the neighborhood for mosquitoes. Or when you want to let the tailgater know you own a real diesel.

Next segment; How to install a John Deere four plunger rotor in your stock DB2 head.
Keep them coming DP. The mosquitos are thick down here and could use a fogging.

Wow, I guess the date explains why it never showed up with SSI5, but its there on SSI6! my bad!

Hey CR,
I'm trying to get to your vids, but the link got moved or doesn't work anymore. Can you update it so we can listen to what you have?

Thanks

I will update it later, i moved the sites it was on and changed their format. I have a new site in the works that i can put them back on when its ready.