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Thread: Installing Vacuum Blocks 84-93 T-1 thru T-4 Reply to Thread
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  Topic Review (Newest First)
04-27-2019 06:42 PM
Bib
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

Cannot thank you enough for this thread.
02-05-2019 07:27 AM
NAJ
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

Welcome To TD!!!

Mopar part # for the delay valve is 4324488.

They are available from two sellers on...
https://www.rearcounter.com/4324488-parts1007468.html

You can view the parts illustration in the Chrysler Parts Catalogs.(Post 41 has working links)

https://www.turbododge.com/forums/f4...-pdf-82-a.html

1988 Catalog, Group 14 Fuel, Page 547, Figure 14-500, Item 27
02-04-2019 10:44 AM
blk07dub
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

HI all ! I have read several pages (not all) of this ... I am very confident in redoing my vacuum lines thanks to the info you guys have provided. My 88 T1 has a air shut off valve in the air box with a vac line ran to the Throttle body WITHOUT a delay valve.... Where can i get a delay valve ? Or can a cap it off ? Car will be staying at stock boost level.
10-30-2018 08:21 AM
NAJ
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

Do you see where the lines are spliced in your second pic?
Splicing the smooth plastic lines into a rubber line is always a problem, it creates points of leakage, either with vacuum/boost or both.

I Googled and found our pic that was deleted.
Someone may have stated that this was not correct and if so maybe they will chime in with the corrections, but in the meantime...

Attachment 251791
10-30-2018 01:08 AM
Saftey3rdRacing
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

On my OEM vaccum block, we are assuming the order is
Purge, EGR, Wastegate, and MAP solenoids.

Which is the bleed? Which one do I hook up to for vacuum?
If I run a new Vacuum block to I need to keep this OEM block?
10-30-2018 12:51 AM
Saftey3rdRacing
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

My suggestion would be to start with what the engine needs to run and once you know that is correct and the car will start and stay running and runs correctly then start running the lines to the emission controls.

1)IMO you should have the vacuum block screwed into the intake manifold rather than using a long piece of hose to connect it to the manifold, just another place to leak.

2)BARO SOLENOID
a)Vacuum Block to Top Port of Baro Solenoid
b)Baro Solenoid Middle Port to the Map Sensor
c)Bottom Port Remains Open

3)Vacuum Block to Fuel Pressure Regulator

That is all you need to have the car start and run.
Be sure all other ports on the vacuum block are plugged, disconnect all the lines from the fitting on the rear of the intake for the Booster, BOV and HVAC and plug the ports on the fitting.

If the car will still not start and run you have other issues that need to be addressed.



This applies to a 85 T1? I think I have a vacuum issues causing my engine not to run on its own.
07-05-2018 02:27 AM
drmohansingh1
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

thanks for making this post.
08-25-2017 06:49 PM
NAJ
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

Quote:
Originally Posted by TurniptheLed View Post
I've been replacing various vacuum hoses in my 91 Dodge Shadow 2.5L turbo 1 and haven't been able to identify the 1-to-4 way splitter coming off of the intake manifold. I've been told that that specific hose is out of production, so I'd need ideas on how to hook up the hoses to maintain accuracy with the vacuum diagram.

Unfortunately, since I'm a new member I don't believe I can add a link or upload images, sorry.
Yes, the factory plastic vacuum harness is no longer available.
As this thread is titled, you will need to remove the factory vacuum harness and replace it with a Vacuum Block and Rubber Vacuum Line and Fittings.
You will need to reuse any Factory Orifices and Check Valves that may be in the vacuum system.
(Somebody posted about using bulk poly line that is the size of the factory line but I cannot find the post/thread so I have no idea where they bought it or how they attached it)

You can connect the vacuum block to the manifold vacuum port with a rubber hose or remove the factory vacuum port and use metal fittings.
From the vacuum block you need to run vacuum lines to the...
1)Fuel Pressure Regulator
2)Baro Solenoid
3)Purge Solenoid
4)Boost Gauge (if equipped)

The other lines are just a matter of running new line from point A to point B.

VACUUM BLOCK
Universal Vacuum Manifold Kits 6 Port 1/8 NPT Turbo Boost Block Manifold T8F7 | eBay

Attachment 235122
08-25-2017 02:57 PM
TurniptheLed
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

I've been replacing various vacuum hoses in my 91 Dodge Shadow 2.5L turbo 1 and haven't been able to identify the 1-to-4 way splitter coming off of the intake manifold. I've been told that that specific hose is out of production, so I'd need ideas on how to hook up the hoses to maintain accuracy with the vacuum diagram.

Unfortunately, since I'm a new member I don't believe I can add a link or upload images, sorry.
03-02-2017 06:20 PM
markenyux
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

the diagram confusing me.. iam not mechanic actually

---------------------------
Dodge Owners Manual for help
08-22-2016 10:48 PM
Glhs60
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

Jan, his is one of your best pieces of advice yet!!

Vacuum diagrams can be intimidating to understand but when you list the components that need a vacuum signal it may seem much more clear to many folks.

Thanks
Randy
08-22-2016 08:21 PM
NAJ
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

My suggestion would be to start with what the engine needs to run and once you know that is correct and the car will start and stay running and runs correctly then start running the lines to the emission controls.

1)IMO you should have the vacuum block screwed into the intake manifold rather than using a long piece of hose to connect it to the manifold, just another place to leak.

2)BARO SOLENOID
a)Vacuum Block to Top Port of Baro Solenoid
b)Baro Solenoid Middle Port to the Map Sensor
c)Bottom Port Remains Open

3)Vacuum Block to Fuel Pressure Regulator

That is all you need to have the car start and run.
Be sure all other ports on the vacuum block are plugged, disconnect all the lines from the fitting on the rear of the intake for the Booster, BOV and HVAC and plug the ports on the fitting.

If the car will still not start and run you have other issues that need to be addressed.
08-22-2016 05:06 AM
NAJ
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

Welcome To TD!!!

I fixed your YouTube video links.
I can look at your issue and try to help later on tonight.





08-21-2016 07:28 AM
Dmitry
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

Hi all!

Please, help me with vacuum lines.

I have got 1992 dodge daytona with 2.5 k-engine, turbocharged with Garrett T-3 turbo.


Vacuum hoses and check valves was fully lost, so i'm trying to rebuild all vacuum system completeness.

There is video of my connection
youtu.be/gGnM8xUU9mA
youtu.be/Mu2MIYO-T4o
youtu.be/LlNbHHzLCc4
please, help me to rebuild this vacuum system :)

i need your advices.

Thanks!
08-16-2016 09:39 PM
mike0007
Re: Installing Vacuum Blocks 84-93 T-1 thru T-4

Quote:
Originally Posted by NAJ View Post
I would like to make a thread for the membership on installing a vacuum block on all TD's from 84 -93 with all of the different engines and years.
Show how you installed it, what parts were used and links of where to get the parts needed with pics of the completed job.
Also if you added a CAI show/tell how you ran the lines including PCV for the deleted airbox.

Below will be the index of year/engine and will be listed by post #.

Post #2) 90 T-4 (VNT)
Post #5) 87 T-2
Post #8) 88-89 T-1/T-2
Post #28) 91-93 T-3
Post #33) 84-87 T-1
So that's a real good idea NOTE the upgrades on the vacuum lines material and the rubber hoses TO> TEFLON tubing and SILICONE hose With the connectors as well for them made in PVC ,SS ,or Aluminum FOR the T's-Y's-straight - reducers and other clips for connection of LINES and so on ECT.


SUPER COOL IDEA >>> NAJ !!!
mike0007 TD-member!
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