M pump running DI
M pump running DI
Today i came across some "truck" type injector at the diesel shop of my friend, after some talking with the boys and measures i did realise that i can fit one of those in the multivalve head.
i can machine a injector holder wich will be held in the place of the original prechamber. a few questions remain:
1:injector opening is 250BAR
2: will the M pump be able to open this injector and run it through the RPM range.
3: since the timing advance device is set with a set of springs, to open a 250BAR means that some advance will be presente at low rpm, will this afect too much the performance.
4: for a DI how much before TDC sould we set the injection just to have the engine running.
remember, i just want to try the engine running , i´m not woried with pistons or heating to start, etc. i just want to try the M pump as a DI.
imputs will be much aprecciated.
thanks
FD,
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hy there,
Today i came across some "truck" type injector at the diesel shop of my friend, after some talking with the boys and measures i did realise that i can fit one of those in the multivalve head.
i can machine a injector holder wich will be held in the place of the original prechamber. a few questions remain:
1:injector opening is 250BAR
2: will the M pump be able to open this injector and run it through the RPM range.
3: since the timing advance device is set with a set of springs, to open a 250BAR means that some advance will be presente at low rpm, will this afect too much the performance.
4: for a DI how much before TDC sould we set the injection just to have the engine running.
remember, i just want to try the engine running , i´m not woried with pistons or heating to start, etc. i just want to try the M pump as a DI.
imputs will be much aprecciated.
thanks
FD,
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Sleek~silver602
01-29-2015, 05:10 PM #2Well I know on 5.9L cummins with a p pump guys run them smooth at 17 degrees timing i think stock from factory is 14.5
Duncansport
01-29-2015, 08:00 PM #4BSR used one in their engine i believe. Also FRAS is building adapters for DI conversions for the OM606/605.
DiseaselWeasel
01-30-2015, 04:33 AM #5AFAIK the BSR DI engine was never put into service... And now they'r tinkering with a CDI.
Here's what happens when you try to run a VE pump with an IDI camplate and 10mm plunger on a DI engine. Watch the whole video if you wanna know why they tried that combo.
I would expect something similar with a 5.5mm M pump.
If i wanted to run an M pump DI i would get the biggest elements possible and if possible regrind the cam for faster injection. That might just work.
For timing i would try something between 12 and 20 BTDC.
Though a VE pump with a 11mm head and 6BT cummins camplate might be a simpler solution.
http://youtu.be/5TbH8NsL9nU?t=6m20s
Here's what happens when you try to run a VE pump with an IDI camplate and 10mm plunger on a DI engine. Watch the whole video if you wanna know why they tried that combo.
I would expect something similar with a 5.5mm M pump.
If i wanted to run an M pump DI i would get the biggest elements possible and if possible regrind the cam for faster injection. That might just work.
For timing i would try something between 12 and 20 BTDC.
Though a VE pump with a 11mm head and 6BT cummins camplate might be a simpler solution.
have u ever seen a mechanical VE of 5 Cylinders with a MB flange? if yes tell me where to find it , and i will run a VE instead of the M.
thanks.
MB engines with the M always start with timings ranging from 10 to 25º they run best at 18.5
FD,
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thanks petar,
have u ever seen a mechanical VE of 5 Cylinders with a MB flange? if yes tell me where to find it , and i will run a VE instead of the M.
thanks.
MB engines with the M always start with timings ranging from 10 to 25º they run best at 18.5
FD,
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a some other bulshits inside. VE mechanic to VE electrical is not possible, well plug and play.
i´ve heard of a fellow with a kind of volvo 5 cyl . did u heard something?
regards
FD,
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that is not feasible, the shaft from mechanical pumps do not fit the EDC ones. same with the flange.
a some other bulshits inside. VE mechanic to VE electrical is not possible, well plug and play.
i´ve heard of a fellow with a kind of volvo 5 cyl . did u heard something?
regards
FD,
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I believe you can't rev as hard due to the piston bowl design but it would work and run.
You would lose some injection quantity from the pump running at 250bar as well.
F-tune is working on a di setup. He has injectors and bosses made up. He is also running different pistons.
I believe you can't rev as hard due to the piston bowl design but it would work and run.
You would lose some injection quantity from the pump running at 250bar as well.
Today i did tested my 7.5 M pump throug a 250 BAR DI injector, it performs surprisingly wonderfull through the RPM range. measured against a 200BAR test injector and the quantities dont vary that much. It is 110cc pump under boost. 80cc no boost. very happy it performed well.
Next step will be the assesment to have THIS type of injector hooked in the head, my plan is to use a modified precup to hold it.
IN near future, will run some tryals on a stock 605 engine.
regards
FD,
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Hy there,
Today i did tested my 7.5 M pump throug a 250 BAR DI injector, it performs surprisingly wonderfull through the RPM range. measured against a 200BAR test injector and the quantities dont vary that much. It is 110cc pump under boost. 80cc no boost. very happy it performed well.
Next step will be the assesment to have THIS type of injector hooked in the head, my plan is to use a modified precup to hold it.
IN near future, will run some tryals on a stock 605 engine.
regards
FD,
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