jmb614

Decided to install a Meziere pump since the CM-30 doesn't appear to be enough for this 185 pulley. I've got the IC loop apart now and am getting ready to install the pump.

I emptied a bit of the coolant into a clean white bucket and noticed what appears to be some small black rubber/plastic bits floating in the coolant. Prior to the CM-30 install I hadn't noticed these. Then I recall Chawkins' build thread and his issues with the trunk tank and CM-30 pump problems. In that thread he mentions also seeing black filings that had blocked 80% of the screen in the trunk tank from the return line.

The only thing that would make sense to me is that the CM-30, for whatever reason, is shedding these bits, and potentially causing partial blockage in the loop. If anyone else can shed light on this please help!

I'm curious to know if anyone else has experienced this, and if so, have you noticed an increase in IAT's as a result?

chiromikey

if you cavitated the pump that might explain both the particles and why it's not meeting your cooling needs...

jmb614

I suppose that's possible when I installed the H/E as I did not fill the H/E with coolant prior to installation, though I did top off the reservoir prior to turning on the pump.

This time I simply pinched the lines and swapped pumps.

skratch77

I know its late but any updates on the iats

jmb614

I waiting to button it back up, I have a dead ballast on one of the fog lights and am waiting to see if I can get in touch with Nate from theretrofitsource here in Columbus.

Will keep you posted.

nicco

Is it a straight forward swap? What's the meziere pump part number?

Hammer Down

Model # is WP136S and you will need a custom bracket to mount it. PM Vietjdmboi he has the bracket that you will need.

urbamworm

Interested to see if you see any NOTICEABLE difference and not something less than 10* that could just be from any number of variables. Did you happen to run any logs of IATs before taking the car apart to see what you were seeing at this time and outside temps?

E55Bullet

Whats everyone paying for their pumps?

jmb614

I paid 200 for the pump, another 50 or so for the fittings I wanted. I datalog often, though I haven't ran the car since I swapped out the pump. Will probably log a bit tomorrow and share the results.

outrun

Subscribed for the results.

jmb614

A few pics of the install:

shardul

iTrader: (1)

install looks good, love the 90 degree fitting. so what is the conclusion in terms of IATS?

jmb614

Thanks Shardul! The swap was pretty painless overall, I spent about 4 hours total installing the pump, new low beams, adjusted the HE for better bumper fitment, and tidied up a few things.

IAT's are looking much better. Ambient temps were close to what they were at the track; between 78-82F. I ran the engine up to operating temperature and then made three 60-120 passes, allowing temps to drop to about 10-15 above ambient between each pass; IAT's topped out at 155F, lowest was 151F.

Then took three 0-120 passes following the same methodology, temps topped out at 168F, lowest was 164.

Can't wait to see what a trunk tank with some ice will do

shardul

iTrader: (1)

Nice. Glad to see the problem resolved.

urbamworm

I found this post interesting. First it is incredible that his ignition timing tripled with the cooler IATs, but then more interesting is how he experienced increased temps with the install of a Meziere pump and then after reinstalling stock pump the temps went down again. Hmm... I wonder if this is strictly related to not having a "larger" heat exchanger and instead running a 2nd stock one from an SL? But then Loco said he believes the Meziere was hurting him too while others said the opposite haha. Crazy how there are multiple people with different results. I also know I need to get meth injection in this thing stat!

click here

jmb614

Well, after installing the Meziere IAT's were definitely lower in my experience. I may consider meth injection at some point as well.

tbal

Holy crapppp that thing is huge!!! Makes the CM30 look like a tiny window washer pump lol. It must be quite loud over the CM?

outrun

I am new to all this this business, but this is what I gather from what you just said. Correct me if I am wrong.

If the new pump pushes the coolant too fast for the intercooler to do it's job, wouldn't this mod...the container in the trunk be just fine with a stock(ish) pump?

Does this sound correct?

You're adding more coolant to the system, and with a slower (stock) pump, the outside air may cool it even more on the way there and back from the tank to the pump?

jmb614

Read exotic metals response in the thread urbamworm linked in the previous post.

jmb614

It is more noticeable, yes. You can hear a slight 'whirring' in the cabin.

skratch77

How busy was it at the track when you saw the higher temps?if the car was sitting in the staging lanes the temps will go up bigtime.

jmb614

Usually had 20 minutes or so between rounds, with the car off. Most rounds and time trials I started off the pass at around 95F IAT.