Reverse Flow/Electric Water Pump Cooling System - Page 5 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 06-08-2009, 05:27 PM   #81
Junior Member
 
Join Date: Jan 2006
Location: Toronto
Posts: 182
Total Cats: 0
Default

Quote:
Originally Posted by JasonC SBB View Post
Air? You mean steam?
Lol, brainfart. Yes, steam.
fluke is offline   Reply With Quote
Old 06-08-2009, 05:33 PM   #82
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Mar 2007
Location: South Florida
Posts: 491
Total Cats: -1
Default

This all comes back to the faster flow (vs stock) afforded by the electric pump...with faster coolant flow over the CHRA there will less chance of boiling the coolant in this area.
mrtonyg is offline   Reply With Quote
Old 06-09-2009, 02:30 AM   #83
Elite Member
 
Join Date: Jul 2005
Posts: 6,454
Total Cats: 80
Default

Referencing the graph Joe put up,
the max power point is around 50 li/min @ 0.3 bar of pressure.
That corresponds to a power of 25W.
Assuming motor input power is 8A @ 14V or 96W,
efficiency is 26%.
Seems low but not unbelievable.


BTW I remember the reason for the "fast coolant = overheating" myth - When a t-stat is removed, sometimes the pressure head from the pump was so much it caused the rad cap to vent, leading to overheating.
JasonC SBB is offline   Reply With Quote
Old 06-12-2009, 01:10 PM   #84
Elite Member
 
Join Date: Jul 2005
Posts: 6,454
Total Cats: 80
Default

Interesting article on water pump testing.
Pumps vary in how much cavitation and thus at what temperature it starts:

Browser Warning
JasonC SBB is offline   Reply With Quote
Old 06-12-2009, 05:18 PM   #85
Elite Member
 
Join Date: Jul 2005
Posts: 6,454
Total Cats: 80
Default

There are 2 more manufacturers of remote electric water pumps: Meziere, and CSR. I browsed their websites but couldn't find pump curves.
JasonC SBB is offline   Reply With Quote
Old 06-12-2009, 06:08 PM   #86
Elite Member
iTrader: (22)
 
Join Date: Dec 2006
Location: Sunny Spanish speaking Non US Caribbean
Posts: 3,257
Total Cats: 3
Default

Quote:
Originally Posted by JasonC SBB View Post
There are 2 more manufacturers of remote electric water pumps: Meziere, and CSR. I browsed their websites but couldn't find pump curves.
Jason; next time I'm looking for some obscure thing, I'll ask you

Thanks for that info.
Rafa is offline   Reply With Quote
Old 06-12-2009, 06:20 PM   #87
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,327
Total Cats: 1,926
Default

Additional manufacturers:

Dedenbear

EMP Stewart (controller included)

Moroso

Proform (no universal pumps- OEM replacement only)


Can't find flow maps on any of these. I tend to dislike Chinachargers for much the same reason.
Joe Perez is offline   Reply With Quote
Old 05-08-2012, 08:21 PM   #88
Elite Member
 
Join Date: Jul 2005
Posts: 6,454
Total Cats: 80
Default

ttt
JasonC SBB is offline   Reply With Quote
Old 05-08-2012, 09:52 PM   #89
Elite Member
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,485
Total Cats: 248
Default

I just read thru this all, nice information overall.

Additional pump for the list:
Pierburg, various sizes but the CWA 200 (OE on some BMW's) is 125 l/min @ 450mbar/6.5psi & 200watts. Can be run ***** out simply or has built-in circuit allowing speed control by a low current PWM signal.


http://www.kspg-ag.de/pdfdoc/kspg_pr...olant_pump.pdf
TurboTim is offline   Reply With Quote
Old 05-08-2012, 10:13 PM   #90
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Very interesting. Looks like another great project to increase the conplexity, theoretical efficiency, and unreliableness of my car. Will attempt.
Faeflora is offline   Reply With Quote
Old 05-08-2012, 10:18 PM   #91
Elite Member
iTrader: (2)
 
miata2fast's Avatar
 
Join Date: Aug 2009
Location: Dover, FL
Posts: 2,901
Total Cats: 109
Default

I wish I would have seen this before I built my system. I just went out and did it to the best of my abilities and the knowledge I had at the time. This was before I ever joined any forum.

One thing I like about his system is the fact that the water is cooled by the radiator before going into the pump. My system pulls hot water from the block, and then pushes water through the radiator and then the head. I wonder if having the hotest water in the pump will shorten the life of it.

I have had no issues so far, so after I make the changes planned, I will report about its reliability.

Also, I built my system before I knew anything about coolant reroutes. That is the reason I want to plumb water to both sides of the head. I am currently pumping water to the front.

Oh, and thanks Jason for pulling this thread from the archives.
miata2fast is online now   Reply With Quote
Old 05-08-2012, 11:40 PM   #92
Newb
 
Join Date: Sep 2011
Location: sunnyvale
Posts: 16
Total Cats: 4
Default

>dat radiator
>dat intake
>dat lack of a job
peasant
Spendington is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Walbro 255lph Fuel Pump $50 lsc224 Miata parts for sale/trade 2 10-01-2015 10:17 AM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:17 AM.