More on supply side pressure

[sparks57]

I was looking at that ugly yellow work truck that put down 481hp with the ve pump, and I'm not seeing a lot of stuff on it. Just a b-1 turbo, an intercooler, and a set of big injectors.



Looks like I have a new goal! 480!



But I'm not gonna cheat like mark, I'm gonna do it the old fashion way!



I hope you still have that hat on backwards, chump! :-laf



Anyways, enough picking on mark.



One thing I noticed on that truck is a 24v lift pump... and if I'm not mistaken, pastor bob said that supply side pressure has little effect on output pressure.



I would like to hear (well, read ) more discussion on this.



Thanks,

Chris

 

[boatpuller]

Don't know about the lift pump, but shouldn't your goal be 482?

Why shoot for second best



Good luck,

Caleb

 

[dpuckett]

CHris,



I think the next hurdle is 500. ANd his 481 is on the track, not on a dyno, so which one do we believe? I thinnk you can get there, and still have an everyday driver, jsut have to be pertik'lr who drives it. And with your financier, um, I mean, fiancee to be, it is attainable for you. HAve to work on that pump screw some, and not be afraid to push the envelope. Bubt as soon as I get inercooled, I'm cranking on mine, so watch out.



Caleb,

You still interested in that power mirror? Still have it, along with your address on the computer screen. But that is about as far as I get. Let me know, either here or -- email address removed -- , and I'll ship it out this week. Promise. (as long as I remember ).



Daniel

 

[boatpuller]

Daniel,

Yes I'm still waiting for the mirror, let me know what the shipping is and I'll get some $$ sent your way.





Thanks,

Caleb

 

[sparks57]

Well... yeah... that's what I meant.



I want to be up there with the big boys... I want some prestige here! I NEED SOME EGO BOOST!!!



Yes, 500!!! I don't know if that can really be achieved with the VE, but I will try gosh dernit.



I just need to get that stupid tranismission and clutch and I'll be ready to go...



I already have the fixins to be close to 400, just don't have the drivetrain yet.

 

[Sled Puller]

http://www.diesel-central.com/photo...tLevel=2&Cat1_ID=1&Cat2_ID=&Cat3_ID=&Cat4_ID=

 

[Sled Puller]

#ad




http://www.diesel-central.com/forums/thread.asp?ForumID=15&TopicID=1898





Ya know, maybe it ain't so ugly to the owner who can kick the entire TDR First Gen Forum's tails!!lol

Try to keep up!

 

[roadhawg]

I recall mentioning on this forum installing an electric fuel pump in line to feed a steady 15psi to the ve pump on my truck.

I think it helps to purge the air bubbles out the top orfice of the ve pump, into the return fuel line.

That was over 80,000 miles ago.

Maybe in another 120,000 or so miles, I may make a statement about this helping to increase the longevity of the ve pump.

PROOF PUDDING

 

[sparks57]

Cool, thanks for the links sled puller... I nabbed his e-mail address.

 

[dpuckett]

boatpuller,

I'll try to find a box it'll fit in and ship it to ya.

 

[dpuckett]

Originally posted by dpuckett

CHris,



ANd his 481 is on the track, not on a dyno, so which one do we believe?

Ok, I just clicked on the link, and see he put 486. x to the wheels. That is over 550 at the engine, if you figure 15% loss thru drivetrain, pushing 600 . Ante up, boys. Who has the deepest pockets? I'm willing to try out parts, but cant afford none, so I guess I wont be in on it this year.

 

[bgilbert]

I want to see whats under his hood... . I bet its a 7. 3

 

[sparks57]

But have you guys noticed that the power comes on at 2600 rpm? And the DD dyno setup it ran on can be set for higher loads which is how he was able to run the B-1.



I just don't know how he can drive that thing day to day without melting pistons.

 

[BushWakr - RIP]

Just a point of clarification on fuel pressure(s).....

During some VE testing we ran the pump up to 3200 RPM (pump RPM) and varied the supply pressure to the VE from 8psi to 18psi... no change in readings to merit mention... BUT, if you go below that, you will likely see issues with starvation/cavitation and what ever... . Just had this chat with nascar mark as a matter of fact...

Now those "tests" were done before new mods to my own VE, just to be fair...



For fun, you should see/listen to that 'ole VE howl at 3700 RPM... . nasty, nasty, nasty... . whip me baby, make me feel cheap... just don't mess the hair...

Pretty scary but it got up there before doing an "El Cacko"... (Canadian for crapping out)



Bob.

 

[Greenleaf]

Bob,

3700 pump ("test stand") rpm or or 3700 engine rpm??????????????????????



Inquiring minds wanna know...

-S

 

[JLEONARD]

I NEED SOME EGO BOOST

No,no,no!

It's Turbo BOOST you need to make horsepower!

I just don't know how he can drive that thing day to day without melting pistons.

Because he's not using 481 hp every day. Longevity is a duty cycle issue.

 

[Greenleaf]

Melting Pistons... ... ... .....



Yep. See it all the time... ..... in the tractor pull realm. We inject soooo much fuel that if the water will not come on in time (regulated to start/stop with turbo boost) the injector will cut the piston like a torch cuting through mild steel. The guys that can (read that $$$) use ceramic coated pistons.



What Mark and others are doing is essentially building the 5. 9 engine up to Superstock tractor pull standards,,,,well not quite, but in that direction. We can't dyno our engines. There is a puller down on the river who built a engine only dyno to withstand the hp but we can't run our diesels on it. I't is for blown v8 alcohol engines.



btw, The last engine I worked on was so decompressed that it has to start on ether, and at that will "just" begin to run. Takes two cans to get it to run long enough to build heat in the head to operate on its own. We are talking 130+ lbs of boost pressure here.



Longgevity... . There is none. the upper half of the rod bearing and lower half of the crank bearing is changed between EACH run. They simply flatten out.

Greenleaf

 

[sparks57]

WOW!!! :--)



That is some hard core stuff. But the biggest killer here is that the guy claims to use the thing as a work truck on the side!

 

[Timebomb]

Wile on the issue of pulling tractors, Has anyone ever converted a 5. 9 to alky. Ading spark plugs running distributer off of front gears. Just wondering with all this quest for big #'s mabey il just do that. Balance everything and spin it to about 6000 rpm.



... ... ... ... ... ..... Just a thought... ... ... ... .....

 

[Sled Puller]

Greenleaf,



What tractor engine was that on?





Antrim93,

Yes, Scheids has done it, so I expect there are others.