(11-03-2010, 03:26 PM)kmaser I heard from him last week and he told me that this week the M pump should be ready for testing on his car.

(11-15-2010, 03:42 PM)kmaser I emailed David right after this post to see where he was at with the pump and still have not heard anything back, I am wondering how many people have pumps / elements with David and are getting regular updates ?
I just looked and the last time he logged on was back in Sept. !

(11-17-2010, 01:48 AM)tomnik As a partner of David I have to say that I my last contact was 4 weeks ago.
After Kurtis' PM I sent him an email a couple of days ago.
Normally he replies to me, but it happens to him being on a business trip far away.
There should not be more than the mentioned pumps in the line as he has no more elements.
All paid elements are in David's hands (shipped right after payment to me or even before). I try to keep an overview but have no influence to the progress in the US.
The situation gets clear when he is back.

Tom

(11-19-2010, 01:01 AM)tomnik Currently I ran out of elements.
But raws are still at the manufacturer and the final design is fixed step by step as a separate part number over there.
On the other hand it takes some time to get the finished elements as I am not a cat. A customer for them.
The new order runs already for about 12 sets.

Tom

(12-01-2010, 08:06 PM)George3soccer Haven't heard from him, but he is super busy. I know its getting a bit annoyed but hes a good guy he will free up just before the holidays for sure.

(12-02-2010, 01:06 AM)tomnik ...it only takes 5 min to post or shoot an email...

(12-03-2010, 08:44 AM)Tymbrymi Yes, but when you're super busy you don't always want to spend that five minutes doing something. Sometimes you just want to spend that five minutes staring at the ceiling and thinking about what you want to. My $.02 anyway!

(12-03-2010, 08:44 AM)Tymbrymi

(12-02-2010, 01:06 AM)tomnik ...it only takes 5 min to post or shoot an email...

Yes, but when you're super busy you don't always want to spend that five minutes doing something. Sometimes you just want to spend that five minutes staring at the ceiling and thinking about what you want to. My $.02 anyway!

(12-16-2010, 05:19 PM)George3soccer Very interesting gsxr, please do a write up on your achievements.

Also let me know how the pump turns out?

(12-16-2010, 04:12 PM)gsxr You need to have a Bosch shop capable of fully disassembling the pump, swapping the elements, re-assembling it with all new gaskets/seals, then - AFAIK - it has to be calibrated on a Bosch test bench to put out as much fuel as possible at full load while still maintaining stock fuel delivery at idle. (That is, assuming you want the pump "maxed out").

I had a shop do exactly that but with 6mm Bosch elements, and I hope to install that pump in my car this weekend. It should be good for approx 210hp at the crank on a 603 engine. I went to the dyno two weeks ago for a "before" dyno graph with the bone-stock pump (116rwhp uncorrected, on winter blend fuel). Assuming the custom pump works as expected, after some road testing it will go back to the dyno to get the "after" dyno sheet with real numbers (no estimates). I also did 0-60 / 0-80 / etc testing before, and will do after testing as well to show real-world results. (Local dragstrip is closed until April, sorry.)

(12-16-2010, 08:40 PM)jonbobshinigin Dave, I am thrilled to hear about your success!

(12-16-2010, 08:42 PM)Mahonroy So I'm assuming I can call around some local diesel shops and have them do the same thing you mentioned? How much did something like this cost? Anything else I should know about before doing this? Thanks again!

(12-16-2010, 09:04 PM)squirrelmaster I cannot get a hold of dave Last contact with him was over a month ago, I need his phone # He has had my pump since march 25 2010
i will pick up the pump up my self if he will not send it back ...

(12-17-2010, 05:20 PM)Mcrae645 Tom you are correct. It is the pump shops fault with the delay. That would be me.

First of all I will apologize to Derv Tuning. David is one hell of a nice guy. So David when you get back in country "I am sorry to have put you in this position."

When David asked me if I would be interested in doing this I told him I would do them when I had time. I have about 25 hours in the first pump trying to tweak it as much as I could. David had that pump on his car two or three times. We are a small shop and I try to put out the highest quality I can. To me the most important thing is idle. Any time you customize the pump the governor must still be able to control idle in a stable manor. With the first pump we achieved that goal.

I am working on the MW pump now. I don't like the way the governor is acting so I will probably need to go back into it. I am going to try and get this one done next week. I am hoping David gets back in town so he can install it on his car for dynamic testing.

Squirrelmaster your pump is torn down and coming up next. When you ship an injection pump please drain all fluids and really pack them well. Your idle solenoid was broken in transit. I have one from a core pump that I will put in.

After the new year I will be on Squirrelmasters. Hoping to have it done by the second week. Unfortunately we do not have a 6 cly vehicle to do dynamic testing on.

Scott

(12-17-2010, 05:20 PM)Mcrae645 Tom you are correct. It is the pump shops fault with the delay. That would be me.

First of all I will apologize to Derv Tuning. David is one hell of a nice guy. So David when you get back in country "I am sorry to have put you in this position."

Scott

(12-17-2010, 05:41 PM)winmutt Am I correct in reading that the problem with Derv is that he has been out of the country?

(12-17-2010, 10:41 AM)gsxr

(12-16-2010, 08:40 PM)jonbobshinigin Dave, I am thrilled to hear about your success!

Whoa now, it's only a test bench success so far... I'm not ready to call it a complete success until the pump is installed and the car is driving without problems! I'll start a new thread when that happens.

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(12-16-2010, 08:42 PM)Mahonroy So I'm assuming I can call around some local diesel shops and have them do the same thing you mentioned? How much did something like this cost? Anything else I should know about before doing this? Thanks again!

Basically yes, you can call some Bosch shops and see if they are willing to do custom work on a Bosch M-pump. Some will, some won't, kinda depends if they need the work and/or are comfortable handing you a pump that doesn't match any official Bosch spec sheet (i.e., they can't guarantee the results). Cost will likely be about $100 per element (for new 6mm Bosch elements), so ~$600 in elements, plus mabye $100 in "soft parts" (seals / gaskets), and $500-$750 labor for the rebuild and calibration. Figure at least $1200 total, and you supply the good core pump.

If my hybrid 603 pump works well (which remains to be proven), I can give you the contact info of the shop that did my pump in Washington. I also have a spare 606 pump with 6mm elements that I might sell, although I'm not sure if it would be any cost savings as there would be additional labor to take apart the 606 pump to extract the elements, compared to just buying new ones.

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(12-16-2010, 09:04 PM)squirrelmaster I cannot get a hold of dave Last contact with him was over a month ago, I need his phone # He has had my pump since march 25 2010
i will pick up the pump up my self if he will not send it back ...

Well if it makes you feel any better (and it probably won't!)... back when I first learned that we might be able to stick 6mm elements into a 603 pump, I found a diesel performance shop in the southern USA (who shall remain nameless) who was interested in doing this as an experiment on the side. I bought a 603 core pump and used 606 pump and sent both to him. We exchanged emails periodically, and during that time he did send me a set of modified / rebuilt injectors to try, which I did (first set had problems, I sent them back and he sent a second set which worked well). But after two years - yes, two years - I still didn't have the pump done. He did return my 606 pump on my request, with apologies; he was too busy doing work that paid money to mess with my freebie/gratis project. I didn't get the 603 pump back (it was torn apart) but the good injectors made up for it. This was in mid 2007-2009, approx.

The shop in WA ended up having my pumps for about a year, roughly, although that was partly because they built one pump right away and were waiting for results which never happened (the recipient was unable to test the pump in his car - long story). Finally we said to just go ahead and do the second pump anyway (mine) so they finished it up and I got it in September 2010. The next 3 month delay was my fault, but my end of the deal is to test it in my car, and provide before & after dyno graphs if it works out. If so, they'll be willing to do the same work for the general public, with an expected turnaround time of a few weeks I believe.

However - in both cases, I was able to get responses via email in 1-3 business days, even though it took many months for the pumps to finally return to me. I would expect the same from DervTuning... if you sent him pumps & paid for elements, you're at least due for a courtesy update!


FWIW, if the 6mm elements work as expected, I want to buy a set of 7.5mm Floyds from Tomnik and have the same WA shop build a pump with the Floyds. But, that's getting a little ahead... need to get data on the 6mm setup first.