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

Can I plug the coolant lines going into the intake manifold??

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Old Feb 23, 2002 | 07:45 PM
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Can I plug the coolant lines going into the intake manifold??

well like it says in the title,,,does this hurt anything,,i have a EGR and AVC blocking plates,,,so are theit any bad results from doing this,,,it seems the seals were bad to being with so my intake gasket looked like it had been under water for a while,,i htink it was this leaking causeing that.

if anyone has done this before let me know if this is doable
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Old Feb 24, 2002 | 05:05 AM
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Turbo?&nbsp NA?



-Ted
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Old Feb 24, 2002 | 05:28 AM
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He has a turbo but I would like to know for my N/A as well.
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Old Feb 24, 2002 | 05:29 AM
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Oh

I didnt want to use an extra hose and bypass it. Instead I wanted to cap them off. Is this possible???
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Old Feb 24, 2002 | 05:37 AM
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If it's for the turbo, you CANNOT plug thos coolant passages in the lower intake manifold if you're still using the stock turbo.&nbsp The rear coolant passage flows coolant to the turbo!


-Ted
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Old Feb 24, 2002 | 05:46 AM
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Me me
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Old Feb 24, 2002 | 08:16 AM
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Originally posted by RETed
If it's for the turbo, you CANNOT plug thos coolant passages in the lower intake manifold if you're still using the stock turbo.&nbsp The rear coolant passage flows coolant to the turbo!

-Ted
(slightly OT)

Okay, but what about the coolant lines going through the throttle body? Oh, and is there a way to block those without having to go out and buy a tap set? (i'm po')

Brandon
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Old Feb 24, 2002 | 09:29 AM
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well ****,,that sucks,,i was just gonna stick a quarter in each hole and silicon it in,,i well now i have to buy another gasket
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Old Feb 24, 2002 | 12:57 PM
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Originally posted by No7Yet
Okay, but what about the coolant lines going through the throttle body? Oh, and is there a way to block those without having to go out and buy a tap set? (i'm po')
This is one of the reasons for the Throttle Body Mod.
If you bypass the coolant passages on the throttle body, you really don't need to block them off...



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Old Feb 24, 2002 | 02:01 PM
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From: sandiego, ca
But the reason for the tap is to get rid of the hose so the engine bay looks cleaner.
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Old Feb 24, 2002 | 02:07 PM
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I might be wrong, but as I understood it the TB coolant line is a return path for some of the block's coolant. So if you block it off instead of running a new hose back to the water pump, you remove some cooling from the block. Not advisable!
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Old Feb 24, 2002 | 10:14 PM
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NZ convertable...Well can u find out if this is correct. Saying mabey doesent cut it but thnx anyway. U gave me something to think about. Guess I will use a hose if knowone can tell me for sure.

Where can I find the hose with a 90 degree bend.
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Old Feb 24, 2002 | 10:40 PM
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whenever you want to prevent something from going somewhere in a fluid system, in my experience (limited experience that is), it's usually better to just re-route the flow instead of completely blocking it off. After all, it has to flow to somewhere, and whatever's downstream of that flow is going to be pissed off.

One thing you might have a problem with is icing if you drive it in cold weather. My Civic has something that flows coolant into the throttle body to keep something from icing in cold weather.
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Old Feb 24, 2002 | 11:17 PM
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Originally posted by Barwick
One thing you might have a problem with is icing if you drive it in cold weather. My Civic has something that flows coolant into the throttle body to keep something from icing in cold weather.
i have seen this before,,a 3.8 chevy v6 was completly iced shut
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Old Feb 25, 2002 | 12:11 AM
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From: sandiego, ca
Sandiego here.
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Old Feb 26, 2002 | 10:25 AM
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Von, induction icing doesn't care where you live. It can happen when it is relativly warm.

James
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Old Feb 26, 2002 | 10:29 AM
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So I should not do the Bac mod then??? is that what your saying? I have not heard of this being a problem on 7s.
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Old Feb 26, 2002 | 10:35 AM
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If your refering to my post. The BAC valve being there or not being there should not affect any induction icing. I doubt the intake on our cars would ice. It is in a very heat soaked area.

James
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Old Feb 26, 2002 | 10:36 AM
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Thnx.
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Old Feb 26, 2002 | 05:53 PM
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i agree,,the 7 runs so hot under the hood it probably wouldn't ice up
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Old Feb 26, 2002 | 06:14 PM
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If you leave your car in freezing conditions overnight, it won't matter how hot it was the night before, that heat will have disipated many hours ago, allowing things like throttles to freeze quite nicely. RX-7's cool down just as well as any other car.
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Old Feb 26, 2002 | 07:48 PM
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Originally posted by No7Yet


(slightly OT)

Okay, but what about the coolant lines going through the throttle body? Oh, and is there a way to block those without having to go out and buy a tap set? (i'm po')

Brandon
Yep! use JB weld.
Sean Cathcart
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Old Feb 26, 2002 | 08:05 PM
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No one seems to be able to confirm or deny my original suggested reason not to block this off, so I'll rephrase it:
If you block off what was the TB coolant feed, you might negatively affect your cooling system.
If you reroute the coolant feed to where it used to end up anyway, you won't affect your cooling system.
So it's up to you really.
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Old Feb 26, 2002 | 10:10 PM
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i have to agree and disagree,,sure if the lines are pluged or rerouted the heat will have disapated that protects from freezing,,but here is a thought the coolant isn't instantly warm as soon as you start you engine,,so what keeps it from freezing shut before the engine warms up,,even if the lines are intact.
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Old Feb 26, 2002 | 11:11 PM
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Originally posted by LLADNAR
i
but here is a thought the coolant isn't instantly warm as soon as you start you engine,,so what keeps it from freezing shut before the engine warms up,,even if the lines are intact.

I was going to ask the same question. But I just remember that coolant is anti-freeze so it prolly help prevent freezing of the butterfly/plates even when the car has not been started. There's really no need for it to be there once the car is fully warmed up.
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