Rebuild Questions

[BLKTOPTRVL]

What is this? It is on the upper fuel rail. It appears there is a diaphram of some sort located in this housing.

I have not disassembled this because it has given no sign of failure; however, since I have the engine appart, if there is an inexpensive replacement I'f like to know about it.

Any input?

Thanks.

[BLKTOPTRVL]

During Disassembly, I broke the air intake off this solenoid...

Since it is a air intake, I imagine, I could superglue it back on, but just for laughts, how much is a replacement? Anyone have a used one they want to sell?

I am assuming all four are identical?

[BLKTOPTRVL]

I guess this is the famed Pulsation Damper.

In 19 years, this one has never leaked, but since getting to it is a PITA, I might as well check out a replacement now. Last price I saw was about $150 (I will call Ray for a price on all the items in this list) but if anyone knows of a better price/souce, I'd appreciate hearing.

[BLKTOPTRVL]

These upper and lower rail injectors look to be exactly the same. Are they? If not, how do I tell them apart?

[BLKTOPTRVL]

Wire Harness General...

As I have been disassembling the car, I have been hearing crackling noises from the wire loom and the covering tape (and hopefully not the wires) crack as they move.

Anyone had a bad experience with needing to replace the harness or part of the harness after a rebuild because the wires were too hard and broke?

[RETed]

What is this? It is on the upper fuel rail. It appears there is a diaphram of some sort located in this housing.

I have not disassembled this because it has given no sign of failure; however, since I have the engine appart, if there is an inexpensive replacement I'f like to know about it.

Any input?

That is your fuel pressure regulator.


-Ted

[RETed]

During Disassembly, I broke the air intake off this solenoid...

Since it is a air intake, I imagine, I could superglue it back on, but just for laughts, how much is a replacement? Anyone have a used one they want to sell?

I am assuming all four are identical?

The one with the gray sticker, right?
That's not on a turbo model, so I can only guess...
If it's a kouki FC, it's most likely VDI?
(After looking at your fuel injectors, you look like you're running a zenki FC non-turbo - most likely 6-port?)

If you're talking about the "mushroom" part, it's just an air filter.

Yes, most of them are swappable.
It's a matter if they are "NO" or "NC".
I haven't confirmed if they are all one type of another.
Never priced them brand new from the Mazda dealer, since most guys chuck them when ripping out emissions - pretty easy to find used.


-Ted

[RETed]

I guess this is the famed Pulsation Damper.

That is correct.


-Ted

[RETed]

These upper and lower rail injectors look to be exactly the same. Are they? If not, how do I tell them apart?

That is correct.
All stock FC fuel injectors are identical.
If you wanna keep track of where each were originally located, you need to mark them.
You can't really tell them apart. :(


-Ted

[BLKTOPTRVL]

The one with the gray sticker, right?
That's not on a turbo model, so I can only guess...
If it's a kouki FC, it's most likely VDI?
(After looking at your fuel injectors, you look like you're running a zenki FC non-turbo - most likely 6-port?)

If you're talking about the "mushroom" part, it's just an air filter.

Yes, most of them are swappable.
It's a matter if they are "NO" or "NC".
I haven't confirmed if they are all one type of another.
Never priced them brand new from the Mazda dealer, since most guys chuck them when ripping out emissions - pretty easy to find used.


-Ted

Never heard this terminology... Kouki (kooky :) )

Yes, I am speaking of the grey one. And these photos are from my 6 port 88 vert.

It's good to know they are common, I will cast about and see what I can find.

Thanks again Ted. Always Helpful

[BLKTOPTRVL]

That is correct.
All stock FC fuel injectors are identical.
If you wanna keep track of where each were originally located, you need to mark them.
You can't really tell them apart. :(


-Ted

They were sent out to be rebuilt, so which is which doesn't concern me now.

[RETed]

Never heard this terminology... Kouki (kooky :) )


I like to use the Japan terminology when talking about the year splits... :)

1986 - 1988 = S4 = Zenki
1989 - 1991 = S5 = Kouki
:)


-Ted

[Apac tii]

Kouki is another term for a s5 2nd gen rx7, zenki is a s4 model.

[BLKTOPTRVL]

Engine is now ready to come out, every external system has been removed and the tranny/exhaust is disconnected.

My biggest surprise so far is that not one of the bolts has been any real trouble. (knock wood).

Question:

The top engine/trans bolt behind the oil pedestal at first wanted to round, so, I used a couple of other wrenches and it came right out. Anyone have a source for hardened bolts so I can replace it?

[classicauto]

The tranny bolts don't need to be anything suepr special. Just take the to a hardware store and grab the proper length and dia/pitch (M12/1.25 IIRC, but don't quote me :) )

[BLKTOPTRVL]

I hear you, but I'd like to stick to the original hardness range. Just in case.

Besides, if it isn't from Mazda, a few hard bolts cant cost too much.

[Max777]

Hmm, G8 Metric has never failed me yet! We BMX'ers love to replace all our bolts with G8 bolts, because they make the bike stronger and hold better before snapping.

[RETed]

Hmm, G8 Metric has never failed me yet!
Actually, "grade 8 metric" doesn't make any sense... :)

SAE Grade 8 = metric 10.9

http://www.precisionscrewandbolt.com/metric.htm


-Ted

[Max777]

bah... that's what being tired does to you. What I meant was a Grade 8 bolt with a metric thread pitch, I guess?

But then, what about those bolts which are metric, an have the number written, but it's a single digit? like the fender bolts. They have the number 8 stamped on their head... so it's not an SAE G8, right?