2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

don't believe everything you read on the forum.

Thread Tools
 
Search this Thread
 
Old 12-07-09, 10:37 PM
  #1  
Registered Loser

Thread Starter
iTrader: (6)
 
walken's Avatar
 
Join Date: Dec 2002
Location: Whiterock
Posts: 2,224
Likes: 0
Received 0 Likes on 0 Posts
don't believe everything you read on the forum.

people said if you wanted to run a s5 water pump on a s4 car all you need is the s5 housing. well it turns out a s5 housing wont fit with a s4 front cover. at least on the turbo model.
Old 12-07-09, 10:39 PM
  #2  
The Brap is Back

iTrader: (3)
 
FirstRotaryExp's Avatar
 
Join Date: Sep 2005
Location: Dandridge, Tennessee
Posts: 2,777
Likes: 0
Received 1 Like on 1 Post
why would you want an S5 water pump anything on a S4? last I checked the S4's had a cast aluminum water neck vs the S5's pos plastic neck?
Old 12-07-09, 10:40 PM
  #3  
My job is to blow **** up

iTrader: (8)
 
lastphaseofthis's Avatar
 
Join Date: Jan 2005
Location: palmyra Indiana
Posts: 2,900
Received 3 Likes on 3 Posts
nope the water pump lower will hit on the OMP, how i broke mine. This was on an N/a. was it this forum? thread?
Old 12-07-09, 10:43 PM
  #4  
Full Member

iTrader: (1)
 
rx7fc3s87's Avatar
 
Join Date: May 2007
Location: Medford
Posts: 73
Likes: 0
Received 0 Likes on 0 Posts
You can get at least 30 horsepower converting a S4 water pump to an S5 one.
Old 12-07-09, 10:49 PM
  #5  
Now With 10th AE Fun!

iTrader: (1)
 
1SWEET7's Avatar
 
Join Date: Jun 2005
Location: CA
Posts: 1,869
Likes: 0
Received 0 Likes on 0 Posts
Of course you cannot believe everything you read on these forums. There is tons of misinformation floating around.
Old 12-07-09, 10:58 PM
  #6  
Listen to King Diamond.

iTrader: (4)
 
need RX7's Avatar
 
Join Date: Dec 2006
Location: Sterling Heights, MI
Posts: 2,834
Received 6 Likes on 6 Posts
Originally Posted by rx7fc3s87
You can get at least 30 horsepower converting a S4 water pump to an S5 one.
Yeah if you combine it with S5 tails, it's like 50+.
Old 12-08-09, 03:03 AM
  #7  
Registered Loser

Thread Starter
iTrader: (6)
 
walken's Avatar
 
Join Date: Dec 2002
Location: Whiterock
Posts: 2,224
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by FirstRotaryExp
why would you want an S5 water pump anything on a S4? last I checked the S4's had a cast aluminum water neck vs the S5's pos plastic neck?
because I have a s5 car with a s4 keg. s5 rad 2+2... I also have a lifetime warranty on a s5 wp. now the crappy part is I now need a s4 t2 wp/housing and clutch fan.

read a few threads were people said they did it. maybe it was n/a. now it has me thinking I can't put a s5 wp/housing on a FD engine and run a FC radiator + FMIC
Old 12-08-09, 03:13 AM
  #8  
Rx2 > FD

iTrader: (10)
 
sen2two's Avatar
 
Join Date: Apr 2005
Location: Florida, Orlando
Posts: 3,359
Likes: 0
Received 8 Likes on 8 Posts
it dosnt matter the engine. it matters what front cover your using. match up w/p housings to matching front covers.

*but, all water pump housings can be used on ALL fron covers with little modification. i know this not cause i read it on here. its because i have tested it. From FD front cover with 1st gen pump to FC pump and 1st gen cover. but these are not direct fits.
Old 12-08-09, 04:59 AM
  #9  
87 SE WITH S5 T2 SWAP

iTrader: (11)
 
joeylyrech's Avatar
 
Join Date: May 2004
Location: allentown pa
Posts: 2,071
Likes: 0
Received 3 Likes on 2 Posts
in some cases you need to mill removed some material of the water pump housing to make it work,in my bros fb with a s5 turbo block we used the gle-se front cover with a s5 water pump and housing but the housings was machined a little bit in order to work,on my fc with a rew i used my s5 t2 front cover water pump and housings with no mods at all.Yuo need to match series in order to get them to work propertly
Old 12-08-09, 08:49 AM
  #10  
FB=OS Giken LSD

iTrader: (20)
 
mikeric's Avatar
 
Join Date: Apr 2001
Location: Wilmington, DE
Posts: 2,279
Likes: 0
Received 0 Likes on 0 Posts
You could have said: "Don't believe everything you read."

Yes, plenty of misinformation but as others have posted, it is possible with some modification.
Old 12-08-09, 10:00 AM
  #11  
FC guy

iTrader: (8)
 
Rob XX 7's Avatar
 
Join Date: Oct 2002
Location: Long Island, New York
Posts: 8,714
Received 16 Likes on 16 Posts
you CAN go the other way around, at least I did

plenty of people run a s4 cover on a s5?
Old 12-08-09, 12:35 PM
  #12  
In the shade

 
EnjoiPugs's Avatar
 
Join Date: Jun 2009
Location: PA
Posts: 249
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by need RX7
Yeah if you combine it with S5 tails, it's like 50+.
Did this with mine. I didn't notice any gains.
Old 12-08-09, 12:39 PM
  #13  
Banned. I got OWNED!!!
iTrader: (11)
 
stevensimon's Avatar
 
Join Date: Aug 2003
Location: salt lake ut
Posts: 3,575
Likes: 0
Received 5 Likes on 5 Posts
you should have asked me man.. i used to have an s4 pump on my s5 motor. s5 front cover but i had to block off the omp. also not all the bolts line up right, causes it to leak at higher rpm.
Old 12-08-09, 02:15 PM
  #14  
PIMP

 
therotaryrocket's Avatar
 
Join Date: Feb 2004
Location: Greensboro, NC
Posts: 1,012
Likes: 0
Received 0 Likes on 0 Posts
yea what kind of thread is this? don't even have a link to where you read this or whom said such a thing? There is a lot of confusion on here, we're not all mazda engineers you know. well thanks for spreading the correct info tho, we now know there is modification involved in the fitment you suggested.
Old 12-08-09, 03:27 PM
  #15  
well rested,buffet o food

 
dawicka2's Avatar
 
Join Date: Dec 2006
Location: NY
Posts: 1,605
Likes: 0
Received 1 Like on 1 Post
I got my car pregnant a few years back and feel guilty that i made it have an abortion.

john ny
Old 12-08-09, 03:45 PM
  #16  
B O R I C U A

iTrader: (14)
 
KNONFS's Avatar
 
Join Date: Mar 2001
Location: VA
Posts: 5,480
Received 35 Likes on 29 Posts
Originally Posted by joeylyrech
in some cases you need to mill removed some material of the water pump housing to make it work

Yup, I had to do this once, in order to get the car running ASAP...
Old 12-08-09, 03:49 PM
  #17  
Full Member

iTrader: (1)
 
groznyiv's Avatar
 
Join Date: Aug 2006
Location: Edmond, Oklahoma
Posts: 151
Likes: 0
Received 0 Likes on 0 Posts
WHAT!?!?! All you guys are not completely honest!!! My whole world is shattered!!
Old 12-08-09, 07:30 PM
  #18  
Registered Loser

Thread Starter
iTrader: (6)
 
walken's Avatar
 
Join Date: Dec 2002
Location: Whiterock
Posts: 2,224
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by therotaryrocket
yea what kind of thread is this?
it was my drunken baaawww thread. T2 wont strart due to not having a properly tuned cold start map. so i decide to get the vert going with it's new engine and run into this brick wall. good thing a local buddy had what I needed and now I can drive a FC again tomorrow.
Old 12-08-09, 07:31 PM
  #19  
Registered Loser

Thread Starter
iTrader: (6)
 
walken's Avatar
 
Join Date: Dec 2002
Location: Whiterock
Posts: 2,224
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by stevensimon
you should have asked me man.. i used to have an s4 pump on my s5 motor. s5 front cover but i had to block off the omp. also not all the bolts line up right, causes it to leak at higher rpm.
yeah I remember that. that's why I didn't take the posts on here with a grain of salt.
Old 12-08-09, 10:55 PM
  #20  
Now With 10th AE Fun!

iTrader: (1)
 
1SWEET7's Avatar
 
Join Date: Jun 2005
Location: CA
Posts: 1,869
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by dawicka2
I got my car pregnant a few years back and feel guilty that i made it have an abortion.

john ny
WTF!!!!
Old 12-09-09, 06:41 PM
  #21  
Boosted. I got BLOWN!!!

iTrader: (29)
 
beefhole's Avatar
 
Join Date: Sep 2003
Location: Queens, NY
Posts: 3,742
Likes: 0
Received 1 Like on 1 Post
You guys fail. You don't even need a water pump. I run without any coolant. This way the sensor never sees any type of temperature and the gauge never gets high. It's great!

The only problem I've been having is the car gets harder and harder to start, but I think my rear housing has developed a cough. Or something.
Old 12-09-09, 06:45 PM
  #22  
Listen to King Diamond.

iTrader: (4)
 
need RX7's Avatar
 
Join Date: Dec 2006
Location: Sterling Heights, MI
Posts: 2,834
Received 6 Likes on 6 Posts
Originally Posted by beefhole
You guys fail. You don't even need a water pump. I run without any coolant. This way the sensor never sees any type of temperature and the gauge never gets high. It's great!

The only problem I've been having is the car gets harder and harder to start, but I think my rear housing has developed a cough. Or something.
HOLY ****! Dude, how has no one else ever thought of that? And just think how much all that coolant must weigh! It's probably more effective than gutting your street car's interior.

I wonder what kind of gains you would see if you replaced the USDM air in the coolant passages with JDM air



I am having way too much fun with this.
Old 12-09-09, 06:50 PM
  #23  
Boosted. I got BLOWN!!!

iTrader: (29)
 
beefhole's Avatar
 
Join Date: Sep 2003
Location: Queens, NY
Posts: 3,742
Likes: 0
Received 1 Like on 1 Post
^Yeah. I mean 1 gallon of coolant is like 5 lbs? The FC takes 2-2.5. I figure I save around 10lbs, then take a dump and it's like 15lbs savings just from that. Take the WP off and then the radiator, more! The 7 CAN lose... WEIGHT

YESSSS
Old 12-10-09, 03:32 AM
  #24  
Registered User
iTrader: (6)
 
Rotary Extreme Sales 1's Avatar
 
Join Date: Sep 2009
Location: Union City, CA
Posts: 1,158
Received 2 Likes on 2 Posts
Don't forget to refill the old water passages with helium to make the whole motor lighter. Safeway will sell you the bottle they use to make birthday ballons. To make this really work you have to modify your water pump blade. You take off the water propeller and put on the turbonator. This will help move the helium through the new modified coolant system. Also as the motor gets hotter, the helium will get lighter and thus so will your car.

I have also used helium for my tires. I could not afford light rims so I put helium instead of air. Also don't forget to mod your ac system for helium too.

Ben
Old 12-10-09, 03:32 AM
  #25  
Registered User
iTrader: (6)
 
Rotary Extreme Sales 1's Avatar
 
Join Date: Sep 2009
Location: Union City, CA
Posts: 1,158
Received 2 Likes on 2 Posts
Don't forget to refill the old water passages with helium to make the whole motor lighter. Safeway will sell you the bottle they use to make birthday ballons. To make this really work you have to modify your water pump blade. You take off the water propeller and put on the turbonator. This will help move the helium through the new modified coolant system. Also as the motor gets hotter, the helium will get lighter and thus so will your car.

I have also used helium for my tires. I could not afford light rims so I put helium instead of air. Also don't forget to mod your ac system for helium too.

Ben


Quick Reply: don't believe everything you read on the forum.



All times are GMT -5. The time now is 05:46 AM.