hey guys!

ok.. i've exhausted ALL of my resources... i really need to know where these 2 nipples on the upper intake manifold go (see pic).

i'm currently installing a 88 TII in an 88 NA. Thanks guys!!

howi

 

The front one is a coolant line. The top is a vacuum nipple. You probably don't need them, so just plug...

Uh, why are you putting a TII intake on an NA engine?

 

thanks aaron!

no no no.. i'm NOT putting a TII UIM on an NA... i don't have that much time to waste... hehehehe...

i'm installing an entire TII in my NA chasis, that's what i meant.. sorry :P

i'm building this for the track, so i've already removed all of the emission related equipment. i also know that there's a nipple on the top of the engine that connects to the UIM, which delivers coolant to the UIM, and cycles back out to the BAC. I've already blocked those 2 nipples (coolant inlet and outlet) off on the UIM. and i'm stuck w/ those 2 in the pic.

so according what you're saying, if the lower one is for coolant (inlet i assume), where's the outlet? and if the upper one is a vacuum nipple, where does it connect to?

thanks again guys!

howi

 

I thought that bottom nipple went to the brake line booster and the top one goes to the intercooler. So they either see vacuum or boost.

I would say you definitely need the bottom one unless you have made other arrangements for the brake master.

p.s. I was just redoing all these lines today and went out to confirm on my 88 TII.

 

thanks rex!!

hmm... the bottom one is for brake booster? i thought the upper right-hand corner one is for brake booster.... are you sure about that?

and also, i'm installing an 88 TII, so there aren't any nipples coming out of the intercooler. so i'm REALLY confused... maybe i have a S5 manifold??

howi

 

The top one goes to the IC. And the other I think is the coolent return line for the BAC valve. If you have a stock IC S4 or S5, they all had nipples on them. 2 to be exact. if you don't have them then you might have a j-spec IC. Those did not have the 2 nipples, and if thats the case then you don't need those lines. (You wont have the other nipple for the BAC) I see you have a block off plate. Do you even have the BAC valve?

Does your IC say Rotary with turbo or something along those lines? Not intercooled Turbo II?

 

hmmm... thanks for the info xyzras.... that's very interesting.....

no.. i don't have anything written on my ic... maybe there was, but cleaned off, i'm not sure at all.....
but if you look at the system diagram in a manual, only the S5 has 2 nipples coming out of the IC, while the S4 has none.

but you're right, i don't have a BAC.

you said the upper one is the coolant to BAC?? really? i think the coolant line to BAC is at the top (you can see that i had capped it w/ a yellowish-orange cap). i got this info from the manual i download from f3c.org

anyways, this is really pissing me off.... i think i'm just gonna cap both of them and see what happens....

thanks again!

howi

 

Nope S4's have them too. I have an S4. I might be wrong but only the J-specs have no nipples on them. Do you have an S4 or S5. I have all 3 IC's. (Sold the J-spec though)

 

bump

k, come on guys!!

i know that some of you know this, please tell me the answer.

thanks lots!

howi

 

The series four intercooler, has two small nipples coming off it at the right rear. One nipple to the Air Bypass Solenoid on the right rear of the intercooler and one nipple going to the Air Supply Valve at the right rear of the intercooler.

The hose that comes out the back and faces to the right side of the car is the brake booster hose.

The large nipple that sticks straight up goes to the intercooler.

The Air Supply Valve seems to be missing on the back. It should have been mounted with two screws just below the nipple that sticks straight up. It looks in the picture that there is maybe some JBWELD smeared on that flat surface where that valve should have been,. Is that the case?

 

geeze... thanks so much hailers!!

hmm... like i said b4, i don't have any nipples on my IC, so i guess i'll go ahead and cap off the nipple that sticks stright up.

if the brake booster connects to that hose at the bottom, then where does the nipple at the top right hand corner (on an angle, facing the rear of the car) connect to?

ya, i blocked off the air supply valve. like i said b4, it's a track fc, so i've already removed all of the emission-related items.

thanks again!!

howi

 

Are you referring to the bigger nipple near the BAC? It should have ran to the AWS solenoid that sat above the bac. Cap it.

 

Oh crap, it is the brake booster line...Sorry about that, I was thinking backwards.

 

****Are you referring to the bigger nipple near the BAC? It should have ran to the
AWS solenoid that sat above the bac. Cap it******

No. That's the Air Bypass Solenoid. This is a series four engine. AWS is for that inferior series five engine. Same part though.

 

thank you all SOOOOO much!!
this question has been holding back my project for quite some time now, but it's finally been answered by all of you!!

ok... as mentioned previously, since i don't have any nipples on the IC, and have all the emission-related items removed, this is what i'm going to do w/ the 3 nipples on the UIM:

1) for the one on the top right hand corner on an angle, i'm gonna cap it.

2) for the one that sticks straight up, i'm gonna cap it.

3) for the one w/ the hose at the bottom, i'll connect it to my brake booster, cuz i need it obviously.

thanks again for helping me out guys! i greatly appreciate your efforts

howi

 

*****(on an angle, facing the rear of the car)
connect to?*****


That was the feed for the Air Bypass Solenoid Valve. Since you don't have one anymore....cap it off.

The intercooler must have been for a series other than a series four. I have two series four and they both have the two smaller nipples on the back/right side of the intercooler.

Was this a Jap engine. That might explain the differences. Or maybe it's a Jap intercooler. Who knows.