Lt1 Fiero Owners. (Page 3/16)
2.5 AUG 19, 05:06 PM
I have its older cousin the TPI, the Champion 3-core radiator is awesome. Even with working A/C it never gets hot. I have a 180 thermostat and 210 fan switch. Stock Fiero fan. Mine is running a short belt driven water pump, the pulley sticks out into the inner fender, I was able to space the plastic inner fender in some and make it weather tight from road spray and debris.
str8maxn AUG 21, 08:52 PM
Hello all,

I must say, it was really easy to take the intake off. Job is definitely a 1 out of 10. I have a question regarding TB . The last owner had this fitting on the TB {RED ARROW and RED LINE) filled with gasket maker.
I take it he wanted to block it off. It was drawing vacuum none the less.

Can someone tell me where this goes to and what it does?
If one wanted to can I block it off again?




Here is a pic of the engine with intake off.
Anything I should be concern with?
Anything I should change now that the intake is off?




I used a burgundy scotch bright pad to clean the surface. Not sure if I should be using something else.


Thanks again and sorry for all the questions.
La fiera AUG 21, 08:57 PM
I believe that's for the EVAP control solenoid which needs a constant vaccum. The one on top (the bigger one) is for the PCV valve if I remember correctly. You can block it if you are not using emissions.
str8maxn AUG 22, 08:53 PM
I'm missing an ORing on one of the fuel injectors and one is broken on another. Can I use green ORings on the injectors?



Also, I'm missing 6 of the fuel injectors retainers , are they needed?

[This message has been edited by str8maxn (edited 08-22-2021).]

str8maxn AUG 23, 08:42 PM

quote
Originally posted by str8maxn:


Cyrus88, is that a remote water pump?
If so, where did you place it?
Did you have to modify the LT1 water pump?




Can you tell me what wires go where on the BMW Pump?

I picked one up at the junk yard today... I have Red (+) and Brwon (-) and Orange and Purple >




I'd like to bench test is if possible.
Thank you .

[This message has been edited by str8maxn (edited 08-23-2021).]

cyrus88 AUG 23, 08:50 PM
Sorry, I have no idea about any BMW pumps. I don't know where you got that information.

Edit: Ok I see where you got that idea. It wasn't me, it was La Fiera that used BMW pump.

[This message has been edited by cyrus88 (edited 08-23-2021).]

str8maxn AUG 23, 10:41 PM
Hello All, I was able to find a way to bench test it without a PWM controller.


From the BMW forums:

A description of each of the 4 pins and what each needs to see in order to control the pump speed. I

Pin 1 is battery voltage
Pin 2 is PWM signal
Pin 3 is a test/BSD signal
Pin 4 is Ground

Supplying +12volts to Pin 1 AND pin 2 (and grounding pin 4) should make it run full speed after a 'timeout' period of about 3-10 seconds. To vary speed based on PWM input on Pin 2, you need at least 3ms of an inturrupted high pulse in order for it to awake the pump. Keep that in mind when you decide on the PWM frequency and/or your duty cycle percent's.


The pump was taken from a 2008 BMW 328i its model CWA200.
Specifications:
Name: "Pierburg CWA200"
Operation voltage: 8-16 volts
Weight: approx. 2.15 kg
Current consumption: 15A (16.5A max.) / (approx. 0.2mA in standby mode)
Nominal diff. pressure: 0.45 bar *
Flow rate: ca. 116 l/min @ 0.45bar / 166 l/min @ 0.30bar
Speed: approx. 4500 rpm
Temperature range: -40°C – 128°C (water) / -40°C – 140°C (ambient)
Protection: IP67
FYI- used pump was only $20.00. I also ordered a generic PWM for another $20. I saw someone testing this pump with it and looks like it will work just fine.

[This message has been edited by str8maxn (edited 08-23-2021).]

La fiera AUG 23, 10:57 PM
If you would have followed my advice you would not be asking this question. You will never have proper cooling trying to be cheap and run 12 volts to the BMW pump, it will not happen. Pump is designed to run on smart electronics not people trying to out smart it.
str8maxn AUG 23, 11:01 PM



quote
Originally posted by La fiera:

If you would have followed my advice you would not be asking this question. You will never have proper cooling trying to be cheap and run 12 volts to the BMW pump, it will not happen. Pump is designed to run on smart electronics not people trying to out smart it.




PWM has been ordered . I just wanted to ensure the pump I got worked.
La fiera AUG 24, 09:49 AM

quote
Originally posted by str8maxn:
PWM has been ordered . I just wanted to ensure the pump I got worked.



Good! You will not be disappointed! Make sure you read the entire manual. If you have any questions or concerns about setting up PM me if you need to!
Mount the pump as low as possible