Someone mentioned in another thread(cant find it now) that since they have an 86 their tb doesnt have coolant passages built into it. Is this true? Ive never heard of this before, but it wouldnt shock me since the 86 seems to have dozen little differences from 87+ models.

 

It's false.

 

^short simple and to the point^

thanks.

 

check your PMs please.

 

Died On, myth busted

edit: dead on, damn starbucks

 

WAIT!!! search for my name and TB mod i have pictures of my 1986 base model with NO coolant passages in the TB wierd but true

 

ok well i can't find the pics but i'll get em i swear make sure someone reminds me PM me if you have to but i swere there was nowhere on my tb where coolant went through it i thought you mentioned something about noing about this hailers maybe i'm wrong tho

 

LOL it was your post. I duno, they all say no, you say otherwise. Imma practice porting mine out after my turbo swap just for kicks, ill see what I find.

 

On a 86 non turbo, there is a water nipple on the rear rotor SIDE housing. A water hose attaches to it and terminates on the back of the throttle body. There is a water thermo valve less than an inch to the right of where it terminates. From there the water flows out a nipple on the throttle body and the water goes to the BAC.

I just looked at my 86, non turbo car. I've had other non turbo and they all had this piping plus the FSM shows it and the parts fische shows it. Parts fische is downloadable on some sites on this forum. SureShots????

 

'86s have the TB coolant passage, period. Every 2nd gen I have owned has been an '86 with the same throttle body arrangement as other S4 NAs.

 

I figured you guys were right, i was just affirming that it was his post i got that info from. Thanks for all the replies.

 

OK well you all aren't right my car isn't here right now but i swear mine doesn't have em
i'll be picking it up in a few days and i'll pull the tb and take pics and even a video if i have to

Ahh I can't believe no one remembers this from before when i pull off that thing on the back of the TB i think its the thermowax thing, both surfaces are flat both the TB and the thermowax and there was no coolant in my tb anywhere

 

Someone removed it in the past.

RTFM: http://wombat.sevarg.net/RX7/RX-7_Tr...%20Systems.pdf

 

no one removed anything it wasowned by one guy who was an old man and my mother's bosses father i know fora fact he never modified it can someone post a pic of that passage?

 

Ok i drove half way across the county and got my TB and here is a pic in the second pic is where i think there should be a coolant passage but there isn't, i've never seen another tb besides this one so help me out here

 

Is that where the passage should be?

 

Some CLOWN removed the water thermowax on yours. It's a MOD. ha, ha, yeah.

I jpg'd/scanned a couple of picutes of a throttle body. The FSM shows better detai.

 

I removed that but when you take it off isn't there supose to be a passage that runs coolant through the tb? or is it just suppose to heat the tb bacuse it touches it? i was under the impression that the tb was suppose to have coolant flow through it

 

Here's two jpg of the partS removed. One is just a plate with three studs on it that match the throttle body.

 

Bklynrx7- I would appreciate it if you didn't ignore my PMs and E-mails.

 

yeah i took that off but i was under the impression that coolant was suppose to flow into the tb

 

The coolant passages in your TB have been filled with what looks like JBWeld or similar. All FC TB's have coolant passages cast into them, even yours.

 

Ah. I see now. On a series four non turbo made in 86-87, water does not go to the throttle body, it goes to the water thermo ATTACHED to the throttle body. B/T the throttle body and the thermowax there is a PLATE. A solid plate. See it in my second to the last picture????? Yes.

In YOUR picture, the large round hole is where the throttle plate rod end is. No water goes or gets in that area. The same with the elongated hole. No water there because the solid plate is covering that whole area. Then the water thermowax and valve attach on top of the plate.

The turboii is a little different in that area. The thread asked about a 86, and a 86 is the answer I gave.

EDIT: If you look carefully at the PLATE in my picture, you can see the outline/impression of the throttle shaft hole and the elongated hole. There is no water b/t that side of the plate and the throttle body. Make sense? Yes.

The hot water is not to heat the throttle body, but to heat the thermowax so it's piston can expand and move the throttle linkage so the throttle plates will crack open a touch and cause the engine to idle higher when the water is cold. When the engine warms up, the piston retracts and lets the throttle plates close all the way for a lower idle when the engine is hot.

 

Back to the original question of this thread...............your right, I was wrong in my first answer. There are no water passages in a 86 non turbo throttle body. Only in the water thermo device that attaches to the throttle body. Sorry 'bout that.

 

That's exactly how the throttle body is supposed to look. All '86s like any other 2nd gen have the thermowax attached there...That's where the coolant flows through. '86s have the thermowax like any other 2nd gen...Unless we are talking about two different things?