CareBear

I'm doing the turbo simplification for seq. turbos and I'm wondering if I should block-off the two vacuum ports on the lower intake manifoil.

See the photo with blue arrows:



I have removed the Air Control Valve, and there is a tube that is connected to this one that is welded together with another tube. Can both of these be removed, or do I have to keep the second one?

Is there a good walkthrough of the turbo simplification, I only have the diagram and I would like some more details on how to do this modification successfully.

dgeesaman

iTrader: (7)

I think those are the fuel atomizer nipples, which should remain connected.

Dave

CareBear

That sounds correct, but I have no idea where these lines should be connected. Is there some diagram/instructions available?

I'm looking at the following diagram and I see there is a white (non-colored) line that seems to be one of these lines. Looks like it goes into the Y-pipe, is this correct?

turbo_system_simplified.jpg

dgeesaman

iTrader: (7)

The lower one in the picture appears to be the atomizer, and yes it's white in that diagram.

The upper one I think is the line that comes from the FPR. If you're taking out the stock FPR then cap that nipple.

Dave

JONSKI

The top arrow is the pressure/vacuum feed for the FPR. You can eliminate the FPR Solenoid ((A), orange connector, IIRC) by connecting the stock FPR's vacuum hose directly to the diagonal nipple at the inside base of the LIM (by the primary injectors housing).

CareBear

Thanks JONSKI, but I sure wish someone could make emissions removal for seq. turbos like did on Rotary Resurrection for non seq turbos. I'm just barely able to understand the simplification diagram, but it doesn't include everything that needs to be done, like block-offs and what can be removed.

stickman

if you find out please let me know, im planning on jumping into this headfirst when i get home, thanks

stickman

hey carebear when you get it all setup can you send me some pics of what it looks like finished? my email is jdmek6@hotmail.com
thanks man!

stickman

hey guys what does FPR stand for? Fuel Pressure Regulator? im kinda lost on this part...

Noxlupus

yes Stickman. it's Fuel Pressure Regulator.

Mahjik

iTrader: (1)

If you look at the vacuum diagram and then refer back the FSM, you can tell which components are required for the turbo control system and which ones aren't. After that, you can begin to eliminate things which control functions that you don't require.

The turbo simplification and removing emissions are two different things. While the turbo simplification does remove emissions, you can remove emissions and not do the turbo simplification (which is what I did). In that later case, the turbo controls stay the same and just the emissions pieces (and other non-essentials) are removed.

CareBear

Found an article with some more instructions on doing this process, it's a little more but I would still love to have a better step-by-step guide to do both seq. twin turbo simplification and emission removal.

http://www.robrobinette.com/turbo_sy...lification.htm

What is the FSM?

NissanConvert

iTrader: (1)

Factory Service Manual. It should be in the stickies.

CareBear

I know this is not exactly the right thread, but can anyone please validate if I did the correct thing when I removed the AWS? Or did I perhaps happen to remove the Idle Cam also? Should I reinstall the spring?

http://fdboy.com/modifications/

What are the reasons for reinstalling the idle cam?

CareBear

I have some questions regarding the modification process, I have prepared a page with photos and would appreciate any help I can get.

http://fdboy.com/questions/

1. Should the two pipes coming out of the upper intake manifoil, that have vacuume hoses disconnected, be blocked?

2. Is the check valve on the pressure chamber correct or should another one be used?

3. Is this the purge control solenoid valve? This should always be included no matter what type of setup you want?

4. Where should the secondary vacuume connection on the Y-pipe go in the simplification diagram? In the original diagram it goes to the pressure chamber, but nowhere in the simplified (orange color).

5. Repairing oil level wire. I broke the wire to the oil level sensor and I'm unsure what the best way to fix it would be, soldering?

6. Should there be a gasket on this block-off plate on the turbo housing?

7. Two of the studs (connecting downpipe) on the turbo housing looks very bad and I'm afraid they will be completely destroyed when connecting the downpipe. What kind of tools is required to replace these bolts?

stickman

i think the secondary connection for the vacuum on the y pipe should be plugged... and the two pipes coming off the UIM shoud be capped as well.

stickman

i did some research and i found out that the secondary connection thats on the y pipe should go to one of the nipples on the UIM.

stickman

are you takjing about the fast idle cam? if so check out this link.

https://www.rx7club.com/showthread.p...=fast+idle+cam

CareBear

More questions regarding turbo simplification/emissions removal.

Should this coolant pipe be blocked like I have done here? I guess this is the pipe where the coolant comes in for the AWS, which I have disconnected and blocked.



Should the pipes that you see in this photo be removed? I noticed that one of them connects to the Air Pump, which I have removed. The pipe-rig with two pipes is also used to hold the secondary turbo intake, but this might not be needed?

Mahjik

iTrader: (1)

If you don't have a coolant line hooked to the upper part of the throttle body, there is no need to block that off as there is nothing in it. You can simply leave it open.

You can remove the pipes to/from the ACV as well as the ACV itself. They are useless without an airpump.

CareBear

Thank you Mahjik, I will drop the blocking of the coolant pipe and remove the air pipes between ACV (which I have removed) and airpump (also removed).

If you see in my second photo, the last part you can see of the LIM before the secondary turbo intake appears, there is an open hole. I think this was for air that should go down to the cat. Does this require block-off or can it be left open? I'm not sure if it's the hole that goes down to the cat or not.

Mahjik

iTrader: (1)

Yes, you should block it off.

CareBear

1. Ok, so I should block of the lower one of these two?

Only have one block off plate left that fits that hole. The upper one goes into the ACV I think so that should be open without problems?



2. This line goes from the UIM to the oil filler cap, should I just leave this as standard?


3. The coolant line from top of the water pump that goes under the harness and into the throttle body, should this be capped off or should I leave it as standard?

Wrathritic

Interested in this also?
Good questions with pictures! helps when searchin for answers