Question for dzlpwr

[BushWakr - RIP]

Hey you guys, what happened to you all... ..... I turn my back for a couple days and you disappear... .



Roadhawg,



I'd be very interested to see what you turn on the dyno... . so far I've seen mark hit 308 RWHP with his truck. Now I think he could have done even a bit more if he'd kept the engine, but now it's up to the rest of us to break that level.

We can make mods to nozzles, timing, turbo's, exhaust, pump, etc but I'd like to see how far the VE can be pushed with even a modest reliability factor remaining... .



As I understand it, neither you nor the other truck you mentioned are running any drugs (?) and both use the VE pump... did I understand that right???



Also, I'm going to order in the gov. spring to try on my truck just for 'fits and giggles' as they say...



Bob.

 

[roadhawg]

No drugs!



Seems like theres alot of headgasket failures with propane, I don't know about nos.



The buddy I was talking about has a p7100 pump.



I was doing a little light reading in the cummins master repair manual injection pumps and injectors midrange engines, bulletin #3666037-05 on page 2-9 there is an illistration of pump timing and an application chart and thinking of jumping a tooth on the pump timing gear and line up C to C on the timing marks

Has anyone tried this mark or one even more advanced?







Just looking at the higher HP applications, they all run more timeing Happy bombing



Eric

 

[Jluther]

thanks to Jay from this site, I have a VW donor pump to tear apart and take photos of. As time permits, I'll set everything up with lights and a digital camera and get some photos of the pump guts. I'll let people know when this happens; it will take a while.



Regardless of the snappy comments posted from another site a while back, this is one of the best sites I have ever seen for people sharing information. Not all of us have the benefit of years of experience or factory training so to pick on people questioning and thinking on their own is complete BS and actually pretty sad.



I probably won't have a truck to play with for a while but I still like learning how everything works. Thanks to everybody for the info.

 

[glhs]

hfletcher: from pg. 7

When I talked to Al at Piers a few months ago he told me the heads on later trucks (94-97) flow "a little more air, about 4% more" not 40%. So now I'm wondering did you or I hear incorrectly.

 

[HFletcher]

glhs, I was told that first gen heads flow approx 100 (cfm?) and second gens flow about 190 cfm(?). I assume the units are cfm. I don't recall if the above numbers are before or after porting. Henry

 

[nascar mark]

Originally posted by HFletcher

glhs, I was told that first gen heads flow approx 100 (cfm?) and second gens flow about 190 cfm(?). I assume the units are cfm. I don't recall if the above numbers are before or after porting. Henry

Henry,

First off I would like to say flow acquires depend on lift/inches of water/correction factor/flow range and flow meter %. With this said.

The 1st gen heads do flow less than the 2nd gen heads but on average its about 5% difference. Depending on the lift it was measured at it could mean about 8 cfm average difference. The difference between a stage 1 and 2 head is about 20cfm's of porting.

 

[HFletcher]

Mark, how many cfm does a first gen head flow, as PDR measures things? Also, what head flows approx 194 cfm? Thanks, Henry

 

[glhs]

Henry, If you haven't already, go to www.piersdiesel.com and check out the stage 1, 2 & 3 ported cylinder heads. Click on products. This might answer some of your questions. Kurt.

 

[HFletcher]

Thanks glhs. I see the 194, but not the 100? jAnd no distinction between 1st and 2nd gen heads. Boy, did I mishear things!

 

[glhs]

I would think the numbers for stock 12 valve heads are from 94-97 trucks. So taking in a 4-5% less flow for 89-93 heads that's about 6-8 cfm less. I had better shut up now since I have trailed off the original topic.

Something that also caught my attention was talk about a gov. spring kit. What's that? I didn't know one applied to ve pumps. Is this true? If it is, I want one.

 

[BushWakr - RIP]

TTT



Anyone ??

 

[HFletcher]

glhs, since no one replied regarding the gov spring, let me attempt. There is a gov spring available for our first gens that should contribute to improved fueling thru about 3200 rpm. Some other members of this and other forums have installed this spring and support this. The part number is bosch 1 464 650 366. There is a good thread on this mod in this forum which, if you cannot find thru a search, I'm sure can be pointed out to you. The spring costs less than $15 and should be a simple install. Sorry I can't report on mine yet as I'm still dealing with a dead engine. Gett'in one cylinder bored and sleeved this weekend, and hope to get the head welded back up and machined next. Hopefully play with that spring before too long.



Bush, I can tell you're on to something! Look forward to your discoveries. I'm curious about your feelings on the torque control aspects of our governor.

 

[BushWakr - RIP]

 

[glhs]

TTT

Has anyone tried this governor spring recently? My boost maxes out at 25-26 psi most days and seems to start to defuel around 2500 rpm. My no load engine speed is about 3000 rpm.

Where is there a forum that explains how to change it? Kurt

 

[BushWakr - RIP]

Thanks to another fellow, on a different site, I was convinced to try running the gov. spring.....

Now to be totally honest, the roads have been soaked pretty much every day since the install, with some heavy rains.

I can tell you that it seems to hold "full fueling" much longer than the stock spring.

By that I mean the pump does not start backing off or "defueling" anywere near the same as the stock one.

On my first high idle test after the install, my engine actually pulled to and past 3500 RPM and hit 3800 before I could get my foot off the accelerator. :--) :--)











Keep in mind I had to take all the scews (idle, full fuel etc) out to do the install, but they went back in pretty close to original position.

I'll post more once we get some good dry weather.



Bob.

 

[SnoDawg]

ques about the gov spring

I have one but am a bit intimidated on the install since you have to pull the top off of the pump. Can it be installed with the pump on the truck or do I have to remove the pump? Any other areas to be hit on?? as to difficulties or tips will be appreciated.

Thanks

Wayne

 

[BushWakr - RIP]

Wayne,



There are a couple tricky spots... . don't feel bad, I was out at PDR when I did mine. I got finger shaking/clucking from Piers for doing 2 changes at a time. We all know better don't we..... how you gonna know what one change does if you do two at once he says..... RATS... I forgot.



Ok, let me see if I can go grab a link that describes how this goes. It is a series of posts from a couple guys who've done it, including me...

Again, don't feel bad for being a bit intimidated, I was real lucky to have the help of "young mark" from PDR work with me, and nascar mark helped by blowing raspberries at me for not doing it myself... that helped with the courage... (actually macho testosterone)

You can do it with the pump on the truck. You would find it easier if you had help. A second pair of hands really helps in a couple places.



Hang in, I'll go look for the link now...





bob



edit: ok here's the link, while your at it look around here too there may be more on this topic...



http://www.dodge-diesel.org/yabbse/index.php?board=9;action=display;threadid=13165



http://www.dodge-diesel.org/yabbse/index.php?board=9;action=display;threadid=12621

 

[JStraw]

Hi Guys,

I was wondering if I heard correctly that the same engine we have is also used in marine application albet a few different changes. But, puts out a group more HP. Does the marine motor utilize the same fuel pump and if so what was done to it to make it put out more?

 

[SnoDawg]

Thanks!!

Thanks For the info Bob I book marked them. I will not be able to attempt the install until I get back from a trip to the Lower 48. Too bad you guys are in the opposite direction I am going or I would bring some pork chops for your dogs and check out your trucks.

I am driving my 93 down and picking up some stuff that has been in storage for 10 years.

Wayne

 

[Old Smoky]

Well, I just installed the 3200rpm governor spring. I haven't done any real testing, but noticed it required less throttle pressure to maintain a constant speed, revved up faster, and pulled well past the stock defueling point. On thing I didn’t like is that it seemed to take much longer to cool down to 300*. I will post further impressions after I have a chance to drive it more.



Mike