brendan777

So I bought the same car (9 years and 130k miles later...) woo hoo! But it was a steal at $13.6k, so I had to do it too. Ha!

JoeNobody

That is a steal! Was everything in working order? And ABC issues or anything?

brendan777

The owner basically took cared of most of the major issues already including ABC, coil packs, etc., there are some small things that are optional but I'll fix them up as preventive measures. Will drop in a ECU/TCU tune with Eurocharged along with their HE and IC pump, and I think I'll be good to go. I know, I know, I've allocated about $5k in annual maintenance for it.

The goal is to play with this a few years then scout out a 2008+ CL/S65 after that, damn I love depreciation. Ha!

megasaurus

Congrats

brendan777

Thanks!

Welwynnick

It might not happen, but just beware anyone who tries to talk you into buying a DaviesCraig, Johnson or Meziere pump.

Nick

brendan777

I read your recommendation on the EMP WP29, but is that something that's "plug and play"? I rather not go through the whole custom fabrication process, which is why I am considering a Johnson pump like the masses.

What are your thoughts?

JoeNobody

EMP is a bit of work, as it has oversized fittings, may require running a dedicated power line (has 20amp fuse), and requires high pressure hose clamps since it generates so much pressure. But with that said its the highest performing pump money can buy.

Skip the Johnson pump. It performs worse than the Bosch 010 pump. If you want an easy upgrade from the 010 pump, put in a Pierburg CWA50 or CWA100 pump. That's the pump all the latest turbo cars are using. Although nothing except the Bosch is plug and play (Pierburg is same amount of work as the trash Johnson).

Welwynnick

Yes, the WP29 is the high-end, nothing-is-an-obstacle solution.

The Johnson CM30 is the worst IC pump of all, and far worse than the stock Bosch.

However, Johnson (like Jabsco) make a very wide range of good pumps, and some (like the F4B) are quite suitable.

Nick

brendan777

Ok, there goes my idea of the Johnson pump. Question, since I am not mechanically inclined, is it possible to:

1) Pick up an EMP WP29 and ask my mechanic to make it work? I've looked around and the pump itself is not that expensive at around $200-$300 (it's the 24V one right?). Is there a step by step instruction for him if he isn't familiar with this? How much more in parts do I need to budget for, and how long would the estimated labor time be?

2) Same questions for the CWA100. However, since it's easier, would my mechanic have a better chance to know what to do?

My mechanic specializes in MB, but I am not sure if this is something he is familiar with.

Oh, by the way, what you you think about the Eurocharged HE? Is there a better option? Or perhaps a similar performing but cheaper alternative?

Thanks!

JoeNobody

There is no kit for the EMP.

Have your mechanic install either a fresh stock Bosch 010, or so CWA50/100. CWA is still not plug and play, as you have to wire a resistor into its harness so it runs full speed. Search the forums and you'll find info.

Welwynnick

The Pierburg and EMP pumps are complex, brushless, electronically controlled pumps that need external controllers to work as intended. Pierburg use a PWM control interface, but you can over-ride that by connecting 12V to it. EMP use a CAN bus interface, and you would probably need Lingenfelter to sort that out for you. Here's the EMP datasheet and installation manual:

http://www.environmental-expert.com/...tasheet-403263

http://emp-corp.com/support/marketin...arketingID=107

The WP29 comes in both 12V and 24V versions, for cars and trucks respectively. Note that the 12V version performance is noticeably worse than the 24V, and the installed performance is only fully realised with 1" piping.

There are good drop-in solutions though, like the Jabsco 50860, Stuart-Turner 12/50, or Johnson F4B-19. They would get close to the WP29 when used with 3/4" piping, which is normally used for all intercooler installations.

Nick

Welwynnick

I take part of that back; I don't think the Johnson F4B-11 or -19 are suitable for IC pumping, despite the good output head. They cope well with air in the coolant, but I suspect you'd have to change the impeller too frequently, and that means bleeding the V12 IC system, which is a pain.


Nick

brendan777

Hmm.. perhaps I'll upgrade the HE and connect two Bosch 010 in a series as you've recommended in your article. Do you think that will work? It doesn't sound too complicated and may also give the performance I am looking for.

Welwynnick

Good solution. That makes a lot of sense. Just make sure the pump is installed horizontally (to protect the bearings and seals), with an in-line fuse(to protect the electrics), and the outlet mustn't point down (or it will airlock).


Nick

brendan777

Hi Nick, thanks for the confirmation. What do you think would be the best order for connecting in a series? I think I've might have read it in someone's post but forgot about it...

Welwynnick

The conventional sequence is heat exchanger to pump to intercooler. That helps to keep the pump cool.

There's probably an issue with fitting a second pump, and the HE inlet may be the only space to do it.

I would try hard to fit the second one next to, and slightly above the stock pump. You really want pumps arranged in increasing height, in order to minimise air locks.

Whenever a cooling pipe goes downwards, you need provision for bleeding the air.

Nick