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

question about coolant flow

Thread Tools
 
Search this Thread
 
Old 05-26-06, 05:43 PM
  #1  
Busa dude

Thread Starter
 
TII-aholic's Avatar
 
Join Date: Jul 2004
Location: Orlando, FL
Posts: 452
Likes: 0
Received 0 Likes on 0 Posts
question about coolant flow

ok is it ok to cap off the lines coming from the front of the block, going to the back of the block. the ones that go through the throttle body? or do i have to run a hose inbetween them? I did the throttle bod mod and am trying to figure out if coolant has to go through there.

Thanks
Old 05-28-06, 08:47 PM
  #2  
Rotary Freak

 
Join Date: Apr 2002
Location: Boulder, CO
Posts: 1,739
Likes: 0
Received 0 Likes on 0 Posts
I'm pretty sure the only ones neccesary are the two main radiator hoses.... but I'm not 100% sure.
Old 05-29-06, 10:58 AM
  #3  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 110 Likes on 93 Posts
Yes, you can cap them.
Old 05-29-06, 04:49 PM
  #4  
Busa dude

Thread Starter
 
TII-aholic's Avatar
 
Join Date: Jul 2004
Location: Orlando, FL
Posts: 452
Likes: 0
Received 0 Likes on 0 Posts
thank you
Old 05-29-06, 04:52 PM
  #5  
Boost in..Apex seals out.

 
adrock3217's Avatar
 
Join Date: Nov 2003
Location: Maryland, 21794
Posts: 1,931
Likes: 0
Received 0 Likes on 0 Posts
Don't JUST cap them -- they tend to leak, or become brittle and crack. Mix some JB weld, and shoot it down the nipples...(of course, let it dry completely before filling the coolant)...then put some RTV inside the cap, put cap on, and put a small clamp on the cap.
Old 05-30-06, 02:58 PM
  #6  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 110 Likes on 93 Posts
By "cap" I was referring to plugging them.

I wouldn't do what you suggest either since it's really hard to get a JB-Weld to bond if there is any contamination, and it's nearly impossible to remove the contamination without putting the whole mess into a parts washer.

If you want a permanent plug, drill out the holes and tap for 1/4" NPT. Then install a pipe plug. That also leaves you the option to reuse the hole in the future...Wish I had done this on my engine...
Old 05-30-06, 07:22 PM
  #7  
Busa dude

Thread Starter
 
TII-aholic's Avatar
 
Join Date: Jul 2004
Location: Orlando, FL
Posts: 452
Likes: 0
Received 0 Likes on 0 Posts
ugh...too late......I already did the JB weld. seems to be rock solid this afternoon when i went to check on it though so IDK. if this doesnt work ill do what u say aaron
Old 05-30-06, 07:53 PM
  #8  
Boost in..Apex seals out.

 
adrock3217's Avatar
 
Join Date: Nov 2003
Location: Maryland, 21794
Posts: 1,931
Likes: 0
Received 0 Likes on 0 Posts
Ah, didn't know that Aaron :X Sorry! I might do the plugging on mine...
Old 05-30-06, 09:16 PM
  #9  
I'm back Bishes

 
rotorforce's Avatar
 
Join Date: Jan 2006
Location: Rhode Island
Posts: 1,241
Likes: 0
Received 0 Likes on 0 Posts
Thread and plug is the best option. I have gad both capped and JB welded mine and the caps became brittle and broke, and the jb weld eventually sprung a leak as well. As much as one might disagree with me, I have threaded them while still in the engine bay. I dipped the tap into heavy grease while tapping to get most of the shavings not to fall into the coolant passage.

*I do not recommend anyone try this* It was just how I did it.
Old 05-31-06, 08:51 AM
  #10  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 110 Likes on 93 Posts
No problem drilling and tapping them in the engine bay, aside from the awkward factor of having to work with the firewall in the way...
Old 05-31-06, 02:58 PM
  #11  
Busa dude

Thread Starter
 
TII-aholic's Avatar
 
Join Date: Jul 2004
Location: Orlando, FL
Posts: 452
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Aaron Cake
No problem drilling and tapping them in the engine bay, aside from the awkward factor of having to work with the firewall in the way...
so metal shavings in the coolant passage is ok? wtf lol
Old 05-31-06, 03:51 PM
  #12  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 110 Likes on 93 Posts
Originally Posted by TII-aholic
so metal shavings in the coolant passage is ok? wtf lol
Yes, it's perfectly fine.

They are harmless and will drain out the next time the coolant is flushed.
Old 05-31-06, 09:16 PM
  #13  
Busa dude

Thread Starter
 
TII-aholic's Avatar
 
Join Date: Jul 2004
Location: Orlando, FL
Posts: 452
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Aaron Cake
Yes, it's perfectly fine.

They are harmless and will drain out the next time the coolant is flushed.
hmm....learn something new every day
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM
ZaqAtaq
New Member RX-7 Technical
2
09-05-15 08:57 PM



Quick Reply: question about coolant flow



All times are GMT -5. The time now is 04:40 AM.