2 lines going to stock TID
#1
So close to 12's!!!
Thread Starter
Join Date: Aug 2003
Location: Canada
Posts: 395
Likes: 0
Received 0 Likes
on
0 Posts
2 lines going to stock TID
One of them is the bov. What is the other. I already have the DIY BOV, and i have a 3" pipe for my TID mod. What is that other line called. and can i just cap it off. It's kinda down below the accordion bend.
#6
RX-7 Bad Ass
iTrader: (55)
Slow down there, J-rat .
The other small line has a metal check valve - that's the PCV valve. The BAC plumbs in to the metal pipe coming out of the turbo going to the intercooler.
I *think* that connection is just to the PCV system, in which case you can leave it open-air vented - it won't cause a vacuum leak. Might have a little oil mess coming from it, however.
Dale
The other small line has a metal check valve - that's the PCV valve. The BAC plumbs in to the metal pipe coming out of the turbo going to the intercooler.
I *think* that connection is just to the PCV system, in which case you can leave it open-air vented - it won't cause a vacuum leak. Might have a little oil mess coming from it, however.
Dale
Trending Topics
#8
RX-7 Bad Ass
iTrader: (55)
J-rat, you're wrong .
On the '87-88 TII's, there are two lines plumbed into the inlet duct - one is the CBV (stock blow-off valve, Compressor Bypass Valve) and the other is a small aluminum one-way check valve from the PCV (Positive Crankcase Ventilation) system. This expels crankcase vapors into the inlet duct - by emissions law, any emissions (including evaporative) have to be burned and go through the cat. That's why it's plumbed into the intake.
On the '89-91 TII's, there are 3 hookups on the inlet duct - the CBV, PCV, and a vaccum line going to the stock boost control solenoid. The BCS vents wastegate pressure to the turbo's inlet, which is always at vacuum.
The BAC (bypass air control valve) is on the upper intake manifold. There is a pipe going from the turbo's outlet to the 90 degree elbow into the stock intercooler that has a nipple - from there, a short piece of rubber hose feeds the BAC. This is true on all TII's.
You may be confusing the turbo *outlet* pipe with the turbo *inlet* pipe - the outlet pipe has the stock BOV and the BAC line on it. The turbo *inlet* is the goofy rubber contraption going from the turbo inlet to the stock airbox.
Dale
On the '87-88 TII's, there are two lines plumbed into the inlet duct - one is the CBV (stock blow-off valve, Compressor Bypass Valve) and the other is a small aluminum one-way check valve from the PCV (Positive Crankcase Ventilation) system. This expels crankcase vapors into the inlet duct - by emissions law, any emissions (including evaporative) have to be burned and go through the cat. That's why it's plumbed into the intake.
On the '89-91 TII's, there are 3 hookups on the inlet duct - the CBV, PCV, and a vaccum line going to the stock boost control solenoid. The BCS vents wastegate pressure to the turbo's inlet, which is always at vacuum.
The BAC (bypass air control valve) is on the upper intake manifold. There is a pipe going from the turbo's outlet to the 90 degree elbow into the stock intercooler that has a nipple - from there, a short piece of rubber hose feeds the BAC. This is true on all TII's.
You may be confusing the turbo *outlet* pipe with the turbo *inlet* pipe - the outlet pipe has the stock BOV and the BAC line on it. The turbo *inlet* is the goofy rubber contraption going from the turbo inlet to the stock airbox.
Dale
#9
Alcohol Fueled!
iTrader: (2)
*edit*
Okay, now I see. He is talking about the inlet for the BOV to recirculate. Okay, my bad, I was the one confused.
and FYI, I drilled a hole, and installed a nipple for that vac line on my TID mod. Looks cleaner then an open vac line hanging around.
Okay, now I see. He is talking about the inlet for the BOV to recirculate. Okay, my bad, I was the one confused.
and FYI, I drilled a hole, and installed a nipple for that vac line on my TID mod. Looks cleaner then an open vac line hanging around.
Last edited by J-Rat; 09-23-03 at 03:11 PM.
#10
RX-7 Bad Ass
iTrader: (55)
That's all good. Of course, now I've probably confused the original poster with a litany of 3-letter acronyms .
Dale
Dale
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
Frisky Arab
2nd Generation Specific (1986-1992)
13
08-18-15 05:30 PM