New to RX-7's, 89 Turbo II S5 problem + pics
09-24-10, 03:26 PM
#1
Full Member
Thread Starter
New to RX-7's, 89 Turbo II S5 problem + pics
Greetings from Norway! Just got my first RX-7 this week 
A 89' Turbo II S5 Coupe.
The car was imported from Germany in 2003 by previous owner, it had been stored there in a garage for almost 9 years, then stored here from 03 to now. So it's like new underneath, but a bit rough on the exterior side.
Anyway, since the engine haven't been started in like 9 years and some parts have been taken by previous owner it's a bit hard for me to understand what goes where etc when things aren't there.
It's on the left side of the engine, above the turbo a small vacuum hose that seems to go to to somewhere under the intake manifold, plus a larger hose that comes from te IC piping which is blinded by a spark plug. So i think I'm missing some pressure relief valve or something, plus something with the boost sensor.
I'm hoping someone here could help me via the pictures to where things should go and what I'm missing. Please see pics below (8,1 MP cell camera so probably not the best quality, but I'll give it a shot.)
Not sure if the images are going to work
A 89' Turbo II S5 Coupe.The car was imported from Germany in 2003 by previous owner, it had been stored there in a garage for almost 9 years, then stored here from 03 to now. So it's like new underneath, but a bit rough on the exterior side.
Anyway, since the engine haven't been started in like 9 years and some parts have been taken by previous owner it's a bit hard for me to understand what goes where etc when things aren't there.
It's on the left side of the engine, above the turbo a small vacuum hose that seems to go to to somewhere under the intake manifold, plus a larger hose that comes from te IC piping which is blinded by a spark plug. So i think I'm missing some pressure relief valve or something, plus something with the boost sensor.
I'm hoping someone here could help me via the pictures to where things should go and what I'm missing. Please see pics below (8,1 MP cell camera so probably not the best quality, but I'll give it a shot.)
Not sure if the images are going to work
09-24-10, 05:06 PM
#2
Those are some HUGE pictures. A resize would be helpful.
The small vacuum line looks like it comes off the intake manifold, so it's a vacuum source. That could be used for the boost sensor, or for the missing bypass/blow-off valve.
The large hose is supposed to have the bypass/blow-off valve connected to it, and its vent side should be connected to the turbo inlet duct (connected to airbox & turbo).
You can see the stock BOV in this pic of my engine, but I have removed the stock airbox and TID. Instead, it vents into a metal intake tube.
The small vacuum line looks like it comes off the intake manifold, so it's a vacuum source. That could be used for the boost sensor, or for the missing bypass/blow-off valve.
The large hose is supposed to have the bypass/blow-off valve connected to it, and its vent side should be connected to the turbo inlet duct (connected to airbox & turbo).
You can see the stock BOV in this pic of my engine, but I have removed the stock airbox and TID. Instead, it vents into a metal intake tube.
09-25-10, 12:18 PM
#3
Full Member
Thread Starter
Thanks! You don't have any pics of that small vacuum hose and where it goes? See new picture. I have figured out that it has some connection to the boost sensor, and that it possibly is like a metal T pipe or what it's called in there, because there is another loose vacuum hose that I think goes to the boost sensor. Any help + pics would be great!
It's connected to the where I marked an X.
It's connected to the where I marked an X.
Last edited by OyvindRX-7; 09-25-10 at 12:24 PM. Reason: Pic was to big. Resized.
09-25-10, 07:10 PM
#4
Here's another pic for you. This is an S4 J-spec engine, but the vacuum routing is essentially the same. Either the nipple on the UIM or the one on the ACV (in your pic) can be routed to the BOV or boost sensor. They're both vacuum/pressure sources. This is how I routed them on my car; it may be backwards from stock, but it makes no difference. You can see in my first picture the white "tee" for my boost gauge.
02-10-14, 06:27 PM
#6
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Those are some HUGE pictures. A resize would be helpful.
The small vacuum line looks like it comes off the intake manifold, so it's a vacuum source. That could be used for the boost sensor, or for the missing bypass/blow-off valve.
The large hose is supposed to have the bypass/blow-off valve connected to it, and its vent side should be connected to the turbo inlet duct (connected to airbox & turbo).
You can see the stock BOV in this pic of my engine, but I have removed the stock airbox and TID. Instead, it vents into a metal intake tube.
The small vacuum line looks like it comes off the intake manifold, so it's a vacuum source. That could be used for the boost sensor, or for the missing bypass/blow-off valve.
The large hose is supposed to have the bypass/blow-off valve connected to it, and its vent side should be connected to the turbo inlet duct (connected to airbox & turbo).
You can see the stock BOV in this pic of my engine, but I have removed the stock airbox and TID. Instead, it vents into a metal intake tube.
02-10-14, 07:28 PM
#7
The vacuum hose goes to your boost sensor and you BOV which is your stock blow off valve but on the ended of the hose you got to put a Tee fitting on it to supply vacuum to the both of them and from your pics you are missing your stock BOV and the metal part is call blow off valve piping but in your pics yours is there but its plastic its what your hose with the spark plug is on
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