How to tune Bosch VE Boost Comp Pump: Rd28 Patrol 

Mate you're a really great teacher. You taught in a really practical way so people understand what's really happening and even provided a practical method for seeing those changes in real time. Love your work

Great vid. Although the spring for the diaphragm being less tensioned will cause more fuel to be injected at lower boost pressure increasing smoke as boost starts to come on. Increasing spring tension will delay extra fuel cleaning up the smoke as boost is coming on. Getting the engine to lightly soot as the engine comes on boost would be ideal, then adjust the boost compensator diaphragm to allow more fuel in on boost. Then finally add fuel throughout the whole rev range via the fuel screw to increase power.

The clearest and most informative vid I've come across regarding VE pump adjustments. Cheers matey.

As a old 1998 GU Rd28ti owner I'd like to say the following...you are doing a top job with your content, well done and thanks.🍻

Very informative and super easy to understand for a gas mechanic. Cheers

Very well done. You explained things in a way that it was easy to follow. Thank you.

Wow, this is the best video I've ever seen on this subject. Too bad us Umericans can't make a more explanative video like this. Go figure. You guys invented Mad Max!

this was an awesome video. probably the most info ive learnt about how a gu boost comp pump works!

Really good video ! Explains the working of the boost compensator perfectly

Excellent video man, really helped me with tuning my mitsi 4m40

That was brilliant mate, awesome explanation and detail, Cheers Rob

This doesn't just help Patrol owners man. My Disco and my OKA both have Bosch VE pumps. I thought I knew a lot about them but now I know a lot more. Thanks mate, very informative vid.

Hey fella great vid to show us how we can get good results in a plain and simple way, i have a VE on my 6BT in my ftruck and it is all i need.This is still applicable to my engine this info. I have under 300 ponies & 860 ftlb/tq which i can use to get me out of trouble or into sometimes .

Nice! Looks like you have some diesel Yotas! Thanks for the VE pump tuning help!

Thanks for a helpful and informative video.

Just came across this. It’ll be a great help with my boat with a 4.2 vm motori Mercruiser in it.

The fuel loss at higher rpm is the cross coupling pushing and limiting the plunger as the rpm increase. The reason how diesel engines rev limit. So you either make them lighter somehow or prevent them from pushing/limiting the governor with the risk of too high rpm limit

Bloody excellent well put video mate cheers

Great video mate, very well done 👍🏼

Great video dude! Solid work!

Awesome video mate very helpful thank you!!!

Best and most informative video ... Cool. Thx man. You helpt me a lot

Great and informative video!

Hey bro cool video love the detail you have put into it Dirty thumbs up 👍

Thank you very much for this video, very good job, i will try to manage my fuel pump becouse now i have problem when i go to the hill it has no power or weak power. I need more RPM. I also not have blac smoke so i learned a lot whit this video :) Thanks

Great explanation. I am tuning one right now. Soot is a great way to check how it's going. In the end you can ease out a bit. I guess max torque comes just before the soot starts.

Brilliant, thanks for making this 👍

perfect info thankyou!!!

Excellent video!

I liked the video but I believe more explanation should be give regarding the Conveyor Pin & how to control the conveyor pin , fuel pin & fuel set screw & how they interact with the boost spring tensioning nut .. These are the 4 variables to get ones mind around .. But when you understand the function of each of them we can understand how they interact with clarity .. Top to bottom items which control fuel .. 1. The fuel set screw sets the => Maximum Diaphragm Travel sets the Cam Slope to increase fuel in the mix when boost is increased as it compresses the range of the of the diaphragm by increasing spring tension called preload .. By increasing compression of the spring it leans out faster .. If you have a waste gate set at a lower boost this is good to know because you will need to compress the spring .. This is opposite of a high boost / high efficiency turbo because you will need to degrease the spring pressure to get more fuel for the top end .. ----- How I would initially set up the fuel pump when we have a turbo change .. 1. Don't change anything .. Start the vehicle & run up the RPM to 1,200 - 1,500 rpm to examine when it becomes the sootiest .. Then run it up to high RPM to examine what RPM the grey smoke occurs or disappears .. 2. Most people are going to replace their old factory turbo with a higher boost turbo .. The higher boost will make the lower RPM a lot more sooty .. Mark the diaphragm as shown .. We can see from the video that he turned the diaphragm clockwise => + -

Great video man

Nice video mate!

Top info, Cheers.

legendary video

15:58 what a change in exhaust tone, much deeper... So throaty

With the 89-93 Dodge trucks that use this same pump we generally put the fuel pin all the way Up and then turn the Star Wheel up until it is flush with the threaded shaft and then turn it back down 2 turns or so.

Gostei muito. Foi a fonte mais razoavelmente entendível que tive até agora. E sua abordagem não é difícil de entender, mesmo estando em outro idioma. Fiz questão de postar em pt-br, para que saiba de onde comunico. S10 2000 MWM 2.8.

Well Old mate, I don't have a Nissan but the theory holds true for me 80 series too I would think. A non smoking truck can make incredible power because I've seen it. Nissans are well known for smoking though, and you've done a good job cleaning it up, By the way I wish my Turbo sounded like that out the back, even with a 3" exhaust mine is near muted. I can hear the Turbo screaming inside the cab from under the bonnet more than outside. Lastly so few people know about tuning these things, even the diesel specialist up here in N.Q. has no bluddy idea, he's good at reading a book on standard setup & that's it.

Legend

Great video mate,,,, main fuel screw,,,, screw clockwise to add fuel yeah

Hi, great video. Did you consider to change the governor spring ? I think it will help you.

I’ve just gone in 1/8 increments on the fuel screw and backed the idle screw down until I got a puff of soot on take off under load and the rpm sits around 550-600 nice and steady. Don’t really understand it the comp bit to much but I’ve never touched it yet. Gu td42

Swagelok PSV on the intercooler hose? Spotted the Cameron overalls in another vid. Must be a valve guy? Nice video dude 👍

Awesome video mate! What are your suggestion to reduce off boost soot? It idles fairly clean and everything cleans up nicely at full boost but that initial transition from 0 to say 15 psi is pretty bad according to my mates who have been driving behind. I guess that initial overfuelling is needed to get the turbo going but how can I reduce that a little bit?

If you preload the spring by bringing the boost ring up means the engine is going to get less fuel per pound of boost when the turbo is spooling. This will result in more turbo lag no?

Thank you. This a very good piece of information. I finally could see how the FIP can be tunnable. How can I learn some more about electronic VE Bosch pump? Can you recommend some "reading"?

I have a LD28 with aftermarket turbo. Where can I get a boost compensator?

Very nice video mate! I'd watched several of this kind but yours is definitely the best one. Got a question, I have a Pajero 2005 running an 4M40 2.8 with fuel consumption (around 16lts/100km), was wondering if following this process inverted would help me gain some KMS back. If not, any tip to improve fuel economy?

Got the GQ pump on my GU 2.8 and I'm looking forward to throw a VGT next year along with a 12mm head on my pump for higher pressure. Will use this video as a guide when tunning comes to play. What turbo was your GU using when this was filmed?

Hey mate, do you know what the 2 timing marks on the harmonic balancer line up with (the ones 10mm apart? Is one for timing? And one for injection? I’ve seen they line up with the timing belt cover when at bdc

Nice vid. Where can I get a mechanical pump for the 1kz te hilux? Having lots of issues with the edc pump.

Greate video, probably the best one on RU-vid about tuning ve pump! I have question, after mounting intercooler to 1.9td aaz the spool is building very slow.. Turbo gauge is moving up around 3000rpm or 3/4 of throttle position up to 1bar. Near low load or 1/2/3 gears under 2500rpm there is almost no boost. Car is laggy and fuel mileage is poor. In Your opinion, what should be adjusted to fix this throttle response?

Hola me gustaría saber cómo puedo hacer que el turbo silbe de esa manera, tengo un Mitsubishi montero 2.8 pero yo no oigo silbar el turbo cuando conduzco.

Good video, thank you. I have a question on something that isn't yet clear to me, if you could: How do I know which orientation to set the fuel pin for increase/decrease in fuel? Thanks

❤

Top tier viewing. I've got a 1.9tdi with a mechanical pump in my 83 vw t3 van, really nice to hear someone talk about what's actually happening with each adjustment. Out of interest, which EGT gauge did you go for?

Talk the talk no dingo 😀

Cool bro. Still running? Am rebuilding mine atm

Hey mate I pulled boost pin out and now conveyor pin is in the cylinder blocking where the boost pin goes, how do I move it?

Does the timing of a VE pump work like a distributor on a petrol engine? Because what I know with a distributor on a gasoline engine You can adjust the max timing BTDC at x amount of rpm Is that important with diesel injection timing

Can the VE Pump adjustments to time it be made while the engine in running? So i can phycically move the pump up or down on the motor while its running to try get it sound and run better or has the motor got to be turned off each time the setting made??

Just started the tuning process but on a 97 GQ. When it comes to the boost compensator and fuel delivery on boost, could you feel the engine run lean or is it unnoticeable? Also do you have an egr block installed? Kinda concerned about my top end delivery, I've clocked the diaphragm to give me more fuel on and off boost but I've gone from 10 to around 13 psi so will I need to wind up the boost ring?

it's more tension in the spring is a good effect? thank you

Turbo is stock? Sounds really nice

Does this applies for this rd28eti as well?

CU POMPA MECANICA SI CAP DE 11MM

Hello, could you help me? I cannot remove the conical piece that goes along with the membrane in a 1999 Mitsubishi Montero. It is possible to remove the membrane nut and access the inside of the area to unclog the cone, the plunger, and raise it. up to restore order, the car works perfectly in low and high speeds, perhaps to recover when changing gears and going up, it's a little bit missing but the car works perfectly, it's great. I bought it recently and now I wanted to readjust the diesel injection, I can't, you can help me? Thank you thank you very much.

Could you tune the ETi pump and achieve the same results?

Do you happen to recall your final pump setting you were happy with for the compensator diaphragm and spring? Cheers

just curious on what you rev yours to.

I have a 93 patrol y60 Rd28t Do I have the same pump?

Did you need to use gq injectors?

Similar to a pump RD28 td6

Bonjour auriez-vous la traduction en français ou sous,titre svp merci 🙏

Why I'm I here? My gearbox can't take anymore anyway. 😅

5:03 The only reason to have that much soot is if you hate cyclists.