3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
Sponsored by:

KOYO rad overheat problems w/fmic???

Thread Tools
 
Search this Thread
 
Old 05-12-04, 01:15 PM
  #26  
Full Member

 
Assud's Avatar
 
Join Date: Mar 2004
Location: San Diego
Posts: 215
Likes: 0
Received 0 Likes on 0 Posts
I have an apexi FMIC and would also like to know if any other people have had problems with it
Old 05-12-04, 02:29 PM
  #27  
Lives on the Forum

 
SleepR1's Avatar
 
Join Date: Sep 2001
Location: IN
Posts: 6,131
Likes: 0
Received 2 Likes on 2 Posts
What problems?
Originally posted by JMunilla94RX7
is everyone having this problem using the stock front end? also is it just the KOYO or would you have the possibility of the same issues with a FLuidyne or other aftermarket radiator? Last but not least, is everyone who is having the problem using the GReddy or are other FMICs having the same problem?
Old 05-12-04, 03:34 PM
  #28  
Hey, where did my $$$ go?

 
SPOautos's Avatar
 
Join Date: Feb 2001
Location: Bimingham, AL
Posts: 4,413
Likes: 0
Received 0 Likes on 0 Posts
A FMIC cuts your amount of air available for heat transfer in half. Personally I would run either a insulated smic with a fan or a Vmount.

Also, if your dead set on going with a FMIC, dont base your decision around other people experience with difference IC/radiator cores. Just cause one fmic doesnt have problems doesnt meen your will or wont. Every core is different. The more fins it has the better its going to cool the charge air, BUT the more its going to kill the radiator. Also, due to fin design different radiator need different amounts of air flow. If Steve felt the need to put that one his website, I'd at a minimum call him and talk to him about it. I seriously doubt he put it there for no reason.

just my .02
STEPHEN

Last edited by SPOautos; 05-12-04 at 03:39 PM.
Old 05-12-04, 05:37 PM
  #29  
Lives on the Forum

 
SleepR1's Avatar
 
Join Date: Sep 2001
Location: IN
Posts: 6,131
Likes: 0
Received 2 Likes on 2 Posts
Don't forget the A/C condenser that sits in front of the rad core LOL.
Originally posted by SPOautos
A FMIC cuts your amount of air available for heat transfer in half. Personally I would run either a insulated smic with a fan or a Vmount.

Also, if your dead set on going with a FMIC, dont base your decision around other people experience with difference IC/radiator cores. Just cause one fmic doesnt have problems doesnt meen your will or wont. Every core is different. The more fins it has the better its going to cool the charge air, BUT the more its going to kill the radiator. Also, due to fin design different radiator need different amounts of air flow. If Steve felt the need to put that one his website, I'd at a minimum call him and talk to him about it. I seriously doubt he put it there for no reason.

just my .02
STEPHEN
Old 05-12-04, 05:59 PM
  #30  
bee
Senior Member

 
bee's Avatar
 
Join Date: May 2002
Location: Austin Tx
Posts: 494
Likes: 0
Received 0 Likes on 0 Posts
Real men don't need A/C.
Old 05-12-04, 06:37 PM
  #31  
Hooray For Boobies!!!

 
RotorJoe's Avatar
 
Join Date: Sep 2002
Location: Washington
Posts: 3,570
Likes: 0
Received 1 Like on 1 Post
Originally posted by JMunilla94RX7
is everyone having this problem using the stock front end? also is it just the KOYO or would you have the possibility of the same issues with a FLuidyne or other aftermarket radiator? Last but not least, is everyone who is having the problem using the GReddy or are other FMICs having the same problem?
No. I have a fluidyne with the stock front and a huge greddy FMIC. Never see temps above 104C. But then my fans come on at 97C
Old 05-12-04, 06:38 PM
  #32  
Hooray For Boobies!!!

 
RotorJoe's Avatar
 
Join Date: Sep 2002
Location: Washington
Posts: 3,570
Likes: 0
Received 1 Like on 1 Post
Originally posted by bee
Real men don't need A/C.
agreed!
Old 05-12-04, 07:42 PM
  #33  
Eats, Sleeps, Dreams Rotary

Thread Starter
 
rotoboy661's Avatar
 
Join Date: Nov 2003
Location: kali
Posts: 3,083
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by x605p747R1
No. I have a fluidyne with the stock front and a huge greddy FMIC. Never see temps above 104C. But then my fans come on at 97C
really??? wow now since i got the problem figured out

i dont see temps over 94c with my koyo

and that here in cali

at nite its like very respective 82c

mike
Old 05-12-04, 07:43 PM
  #34  
Eats, Sleeps, Dreams Rotary

Thread Starter
 
rotoboy661's Avatar
 
Join Date: Nov 2003
Location: kali
Posts: 3,083
Likes: 0
Received 0 Likes on 0 Posts
a/c is a must here in the desert

and thats no "bull"
Old 05-12-04, 08:07 PM
  #35  
Wouldn't Go If U Paid Me

 
AntiVenom7's Avatar
 
Join Date: Nov 2003
Location: Clayton, NC
Posts: 3,036
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by SleepR1
What problems?
overheating, i thought that was the point of the thread let me rephrase the question. For those of you seeing the higher temperatures are you using the stock front end? also is it just the KOYO or would you have the possibility of the same issues with a FLuidyne or other aftermarket radiator? Last but not least, is everyone who is having the problem using the GReddy or are other FMICs having the same problem?

i will make sure to spell things out for you from now on sleepr1
Old 05-12-04, 08:26 PM
  #36  
Hey, where did my $$$ go?

 
SPOautos's Avatar
 
Join Date: Feb 2001
Location: Bimingham, AL
Posts: 4,413
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by SleepR1
Don't forget the A/C condenser that sits in front of the rad core LOL.

Yea, didnt even think about the condenser....mostly cause I dont have one haha

But still, ac condensors are designed to flow as much or more than the radiator and dont transfer near as many btu's into the air as a fmic or radiator does so they arent as big a deal.

STEPHEN
Old 05-12-04, 08:28 PM
  #37  
Hey, where did my $$$ go?

 
SPOautos's Avatar
 
Join Date: Feb 2001
Location: Bimingham, AL
Posts: 4,413
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by SleepR1
Don't forget the A/C condenser that sits in front of the rad core LOL.

Yea, didnt even think about the condenser....mostly cause I dont have one haha

But still, ac condensors are designed to flow as much or more than the radiator and dont transfer near as many btu's into the air as a fmic or radiator does so they arent as big a deal.

STEPHEN
Old 05-12-04, 09:22 PM
  #38  
omgwtfposlol

 
particleeffect's Avatar
 
Join Date: Dec 2002
Location: Orange City, FL
Posts: 862
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by SleepR1
Good for you. You've traded peace-of-mind for warmer AITs, and lower rwhp.
and slightly quicker turbo responce, and the easiest install possible. anyways, if you still have AIT probs can't you just run h2o? shouldn't a liter or so last for a lapping session?
Old 05-13-04, 04:34 PM
  #39  
Hooray For Boobies!!!

 
RotorJoe's Avatar
 
Join Date: Sep 2002
Location: Washington
Posts: 3,570
Likes: 0
Received 1 Like on 1 Post
Originally posted by rotoboy661
really??? wow now since i got the problem figured out

i dont see temps over 94c with my koyo

and that here in cali

at nite its like very respective 82c

mike
104 c is the highest that I have ever seen, which is about 220f. True thats warm, especially compared to others on this board. But it is not the breaking point. If I were to see it hit 110c (230) then I may start to worry and turn on the heat, pull over, you know things of that sort. I also know that my mixture is more coolant then water right now, so that could be part of it. That will change soon. The stock front end does hinder cooling and I am sure that affects it too. But once my fans kick on the temp sits right at 90-94C (194-201f) which is well within a normal operating temp.

I am still amazed at how low other FDs water temp is in normal driving conditions durnig the day with 80F out side. Some of those temps are on 10F (80C) warmer then the stat opening. Dam.

Last edited by x605p747R1; 05-13-04 at 04:36 PM.
Old 05-13-04, 04:57 PM
  #40  
Lives on the Forum

 
SleepR1's Avatar
 
Join Date: Sep 2001
Location: IN
Posts: 6,131
Likes: 0
Received 2 Likes on 2 Posts
Just get a V-mount, and end the debate. V-mount offers the best of both FMIC and SMIC.

http://www.rx7store.net/product.asp?0=215&1=386&3=830

http://www.rotaryextreme.com/vmount.html

Get a vented hood too. http://www.rx7store.net/product.asp?0=203&1=357&3=698
Originally posted by particleeffect
and slightly quicker turbo responce, and the easiest install possible. anyways, if you still have AIT probs can't you just run h2o? shouldn't a liter or so last for a lapping session?
Old 05-13-04, 05:00 PM
  #41  
Lives on the Forum

 
SleepR1's Avatar
 
Join Date: Sep 2001
Location: IN
Posts: 6,131
Likes: 0
Received 2 Likes on 2 Posts
I've seen 120 C (248 F) for a couple of laps during a hot day @ Putnam Park. No real problems. I don't recommend running at the water temp for an extended amount of time.
Originally posted by x605p747R1
104 c is the highest that I have ever seen, which is about 220f. True thats warm, especially compared to others on this board. But it is not the breaking point. If I were to see it hit 110c (230) then I may start to worry and turn on the heat, pull over, you know things of that sort. I also know that my mixture is more coolant then water right now, so that could be part of it. That will change soon. The stock front end does hinder cooling and I am sure that affects it too. But once my fans kick on the temp sits right at 90-94C (194-201f) which is well within a normal operating temp.

I am still amazed at how low other FDs water temp is in normal driving conditions durnig the day with 80F out side. Some of those temps are on 10F (80C) warmer then the stat opening. Dam.
Old 05-13-04, 05:32 PM
  #42  
1JZ powered

 
jspecracer7's Avatar
 
Join Date: Jul 2001
Location: Where there's only two seasons, hot and wet! I love Okinawa
Posts: 4,423
Likes: 0
Received 0 Likes on 0 Posts
Water temp sits at 85~89. During tuning sessions taking it from 1st gear to the end of 4th gear my water temps climbed to 95~ ....lol... with my oil temps at around 95~, but soon coming back down to 85~ and eventually 80.
Old 05-13-04, 06:16 PM
  #43  
Glug Glug Glug Burp

 
jdhuegel1's Avatar
 
Join Date: Jan 2002
Location: Scott AFB, IL
Posts: 3,819
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by bee
Real men don't need A/C.
True.. Only problem is finding "real women" to cruize naked with you cause it's so goddamn hot.
Old 05-13-04, 08:10 PM
  #44  
Eats, Sleeps, Dreams Rotary

Thread Starter
 
rotoboy661's Avatar
 
Join Date: Nov 2003
Location: kali
Posts: 3,083
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by jdhuegel1
True.. Only problem is finding "real women" to cruize naked with you cause it's so goddamn hot.
tru dat
Old 05-13-04, 11:43 PM
  #45  
Hooray For Boobies!!!

 
RotorJoe's Avatar
 
Join Date: Sep 2002
Location: Washington
Posts: 3,570
Likes: 0
Received 1 Like on 1 Post
Originally posted by jdhuegel1
True.. Only problem is finding "real women" to cruize naked with you cause it's so goddamn hot.
Correct, That is the problem.

Just hall *** and don't stop!
Old 05-14-04, 12:10 AM
  #46  
Senior Member

 
RE13REW's Avatar
 
Join Date: Jan 2003
Location: San Francisco
Posts: 451
Likes: 0
Received 0 Likes on 0 Posts
I don't think it has any problem .....
Fitment will be a little, but cooling problem i don't think so
Old 03-22-05, 10:00 AM
  #47  
Rotary Freak

 
Fred Villamor's Avatar
 
Join Date: Aug 2003
Location: Pensacola, Fla.
Posts: 1,633
Likes: 0
Received 0 Likes on 0 Posts
Mike , I put a Greddy FMIC and Cool Racing 3row full racing radiator in mine and it's way bigger than the Koyo so fitment issues and heatsoak shouldn't be a problem with your Koyo . What I recommend is use Distilled water and Water Wetter for your coolant system ( along with your favorite anti-freeze ) , and at first it took us a while to " BURP " the radiator . That was the ONLY time I saw a potential issue with overheating . Once you get the radiator burped or free of air bubbles , you'll NEVER see high temps again ... even after running it hard . Good luck , it WILL work for you , just keep purging the air from the rad ...
Old 03-22-05, 10:41 AM
  #48  
Eats, Sleeps, Dreams Rotary

Thread Starter
 
rotoboy661's Avatar
 
Join Date: Nov 2003
Location: kali
Posts: 3,083
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Fred Villamor
Mike , I put a Greddy FMIC and Cool Racing 3row full racing radiator in mine and it's way bigger than the Koyo so fitment issues and heatsoak shouldn't be a problem with your Koyo . What I recommend is use Distilled water and Water Wetter for your coolant system ( along with your favorite anti-freeze ) , and at first it took us a while to " BURP " the radiator . That was the ONLY time I saw a potential issue with overheating . Once you get the radiator burped or free of air bubbles , you'll NEVER see high temps again ... even after running it hard . Good luck , it WILL work for you , just keep purging the air from the rad ...

haha

dude this thread is old man

i ditched the fmic along time ago



but u know what i saw a few threads about this koyo heat rpoblems with koyo
Attached Thumbnails KOYO rad overheat problems w/fmic???-single.jpg  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
The1Sun
1st Generation Specific (1979-1985)
0
09-07-15 10:21 PM



Quick Reply: KOYO rad overheat problems w/fmic???



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