fredxxx

Hello,

i have a 180 mm Pulley, an after acceleration from 100-270 km/h the AirIntakeTemperatur is 85 °C, the ambient-temp. is 5°C.
After 10 sek. on 270 km/h it will be 50-60 °C, but if i speedup to 300 i rise back to 85-95 °C.


I have a second H/E, splitted IC-System, Headers, Heatspacers, Ecu , 200 Cats ....

Does the CM30 pump solve the problem ?
Or is it better for the performance to install the 172 mm Pulley ?

I feel that the 180 mm pulley need to much power .... , and the compressor is very loud...

Zod

Interesting, one of the main reasons I did not bother with such a huge pulley is because I want consistency.

Here is my take on it (not trying to be offensive & is just a theory)

In the US they do not go to those speeds on a regular basis (very rare) and only really push the car hard at the drag strip up to speeds of between 118-124mph (200kph max), so they do not see these problems as much, as they let the car rest, put ice and so forth

the other half do not bother with Data logging their cars, do one dyno run get high numbers and assume that how their car will perform always.

I mean with the weather you are running in now, the car should be a monster!

There is the option that your pump is gone also, so....
Did you check your pump to see if it is performing correctly?
Also any dynos?

Best of luck

jikjak

fred, what cooling system do u have?
im currently looking for a second HE and split cooling circuit for my car.

i would definitely check your cooling pump, especially if you are still using the oem one. if u are still using the OEM cooling pump then you need to upgrade that.

Zod

To the new OEM pump as there is nothting wrong with that

dyno

maybe if he has an additional HE, 2 oem pumps would be better ..

dyno

I like your logo ... what car is that tako from ?

fredxxx

Hi,

this is my E55 with 172 mm pulley, headers and Sportcat`s.
With GPS is it 321 km/h ...

Now i want to change the oem pump to the CM30, but i don`t know how i can check the oem pump.

If you use 2 pumps, do you install them in a row or parallel ?

The second H/E is from the C32 and the expansion tank is from bmw.

Now, with 5°C ambient temp. it is no problem, but in the summer i think i get 120°C or higher..

dyno

.. my question was about the 360kmh reading ! is it oem for E55

I still have do the HE upgrade .. just waiting to know whether to give up the twin top coolers mod or not

fredxxx

i don`t know what top coolers do you mean ?
Do you find a aftermarket cooler ????

dyno

tell me about the 360 TAKHO !


ps: I didn't do but i think that 2 pumps should be in a row

fredxxx

In germany you can get this without problems...

http://www.tachopix.de/speedodesign/.../pagetype.iav/

fredxxx

or :

http://www.kicherer-fahrzeugtechnik....17042_04603662

round about 1300 Euro ...

dyno

.. for a moment I was thinking the 360 is from the 030pack

if those guys are well traind, it s very good, I already have a special request for them

Zod

Here is a pic of th parts avilible from MB til the latest one

and that is an example of an additional HE from evo

am still shocked at your temps

I would be crying here with if my AIt's were like that

please check your pump (part number)
and make sure ther are no air bubles in the system

if the two above check ok then.....180mm pulley is a no show for high speed runs
p.s evo has changed the pump they use now, think the one in the pick is cm30, they use a new heavy duty one

fredxxx

Hi, i know, i have checked the system 2 times with vakuum and cirkulation 2 hours over the tank.

the problem is not during normaly driving, only after sprit up from 60 to 290 km/h, after 240 km/h ( 50 ° ) the AIT rise up to 80-90°.

On the weekend i`ll install the CM30 as singlepump or in combination with the oem pump.

dyno

1300 Euro

those guys should be crazy ... maybe it 's a pre-crisis price
something good is happening .. a lot will be more savvy

LET US KNOW what you get with the pump replace. thanks

CWW

Everybody who has done a pulley and tune without upgrading the cooling system has had this same problem. You can't just stop there. You need to add an upgraded heat exchanger, and also one of those Johnson pumps. Then your temps will be back to normal

dyno

he already has an additional HE and splitted system ..

dunno if any evidence is available for cm30 effectiveness at those speeds he is going

CWW

Damn! I didn't realize that. There's definitely something wrong with that stock pump then...

jikjak

so u just added an oem C32 heat exchanger?
what kind of bmw reservoir?

do u think u could take some pics of the HE and the reservoir?
thanks!

Zod

its the same as the on in the evo pic from what i recall (the little black tank)

dyno

so, the first in the list is the newest ?

HYEPWR

your numbers are actually very normal and demonstrate the shortcomings of the stock INTERCOOLER.

A quick test is to drive around 20km/h and floor it until ~160km/h(100mph)....your AIT's should stay under 140*F(60*C)---this is what you said you are at. That tells me---theres probably nothing wrong with your pump.

As far as changing to CM30 or CM90 or 2 stock pumps--->this will not solve the problem. The intercooler is good for 10-12secs of full throttle. Just the nature of air/water systems and our small IC in general. Bigger heat exchangers....more volume....faster pumps help a little in prolonging the time before it goes over 140*F; but mostly they help for RECOVERY(returning ait's back down after a blast).

As ZOD said; most people here in North america dont get to sustain speeds over 120mph for very long. 120*F--thats crazy high (248*F)!!

jikjak

jsut wondering, but should his temps still be that high considering that he has an additional HE with a split cooling circuit?

HYEPWR

I dont know if it is normal....My car is stock and the most Ive done is blast to 140mph. He is talking about cruising at 165mph(270km/h) and then accelerating to 185mph(300km/h)....so thats another ballgame. I have measured my car on those blasts to 140mph and I can tell you that anything over 12 secs at full throttle and your AIT's go skyhigh. Just a quick math in my head....it takes me ~10 seconds to go from 100mph(160km) to 140mph(225KM/H)....like I said--10 to 12 secs and the IC is done cooling. If he is accelerating to 165mph(270km) I bet thats another 10 secs. Thats 20-24 sec full blast. 90*C at that point "SEEMS" preety accurate----although---120*C seems very high.