Only problem with that idea is the RW governor probably can't control it. Nobody has tried yet so it may or may not work well enough to be daily drivable. I'm sure it would work good enough to be a dragstrip queen.

Well, in this case it seems to me the best thing to do would be to either modify the RW governor to control it, or to possibly use a different governor. What about the governor out of the same MW pump that the 10mm elements came out of? Are all MW pumps not the same as far as the interface between the pump and governor is concerned? Would either of these ideas stand even a remote chance of working? And what sort of driveability problems would result from having the governor being overpowered by the engine? Its ungoverned above 1000 anyway.. is the problem not being able to hold a steady idle? Is a jumpy idle really a big problem?

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99 E300 Turbodiesel 100k

Nobody has put in 10mm elements yet, so, the answers to those questions are still unknown for now. It might run like normal, it might make the engine run away or anything in between.

It would be awesome if somebody would do it and find out.

install compression releases on the cylinders. problem solved.

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Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?

As long as they would add one additional commandment for you to keep thy religion to thyself.
George Carlin (Wonder where he is now..)

1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won.

pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt.

It is possible to run calculations to figure out if the idle governor will be effective with elements 2x the size.. Its not simply a matter of "just try it", unless you want to make it that way.. I just don't know where to start calculating. It seems, theoretically, that as you increase the plunger size, a decreasing variation of the rack position causes a greater variation in the amount of fuel injected. Therefore, if you have bigger plungers, you need a more sensitive governor to compensate... or do you? It basically becomes a function of how quickly the governor can respond to rpm increases/decreases compared to a function of how quickly the rpm increases/decreases with a given fuel input... and a few recursions and recombinations thereof... It seems like if the governor can't move the rack proportionally to the speed of the rpm increase/decrease (that is the rapidity with which the rpms change.. "derivative of rpms"), then the governor can't govern effectively... This data must be available somewhere... after all, the method used for engineering this thing originally was not trial and error...

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99 E300 Turbodiesel 100k

Has anyone ever taken a MW pump to a Bosch injection shop and asked them to make performance adjustments?? or would the injection shop refuse to do such work on account of liability/emissions/cold feet? would a 'bench test' machine be able to predict the results, (to some extent) and be useful in calibration.. it must be, that is unless each family of injection pump has a very narrow window of published specifications, beyond which the tech would be guestimating.. I don't really know that want HUGE power, just a bit more torque in the low end.. and seeings how I have not really played with my IP, I can not really ask for even that...

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46 WDX Power Wagon

84 300TDT daily driver

I want huge power =D, if the 617 is good for 400hp I intend to take it there... only problem is $$

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99 E300 Turbodiesel 100k

GB not knockin you or anything. But id like to see you try and push out 400hp out of amotor with 375k miles.

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82' 300SD

Hi Everyone

Glad to have been contacted by Monomer


I will do some research into this and i think i can come up with some
new plungers for everyone.

i must warn you guys though, New Plungers from Bosch are expensive
to the tune of about $100-$150 each + the cost of disassembling the
entire pump to install the new plungers and possibly new Delivery
Valves.

i pose a question of the pumps that have been done before from
Finland, does he install new larger plungers?
if you want recalibration of your pumps in terms of performance
then i can and have done this already, but the 5.5mm plungers
in these pumps are very limited to how much i can increase it.

i have done quite a few in the past and driven several with excellent
better than stock driveability.

hope this helps eveyone

Giles