eth/boost pressure port

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could anyone give me exact details on how to find the boost pressure port on a eth,pictures would also be quite helpful,installing gauges this weekend,thanks in advance for any help

 

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Look on the left side of your engine for
the fuel filter. Right beside it, towards
the rear of the engine, is a round silver
plug that has a square 1/2" provision for
a wratchet extension. This is the boost
tap provided by Cummins. Remove the plug
(don't drive the truck with it removed!)
and take it to a local auto parts supply
store or machine shop/parts store and have
them match the plug size and thread pitch
for a bronze one with another hole in that
plug which will accept one of the bronze
adapters that should be supplied with the
boost gauge kit. Click on this link for
a picture I took tonight of my truck and
the corresponding bronze adapters:
Boost gauge tap

IMHO this is the cleanest way to tap into
the intake without drilling holes and risking
cracking the aluminum intake neck. The plug
that was in my intake had some reddish thread
sealer around it, visible before I removed
the plug. Also, the plug was very easy to
remove, almost as if it was loose. Be sure
to use Teflon tape to get a good seal when
re-installing the new parts.

Some previous posts have reported boost gauge
fluctuations when using this location for
boost readings. I have seen absolutely no
needle fluctuations on my boost gage.

Have fun!

Chris

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'01 3500 QC 4x4 SLT, Dk. Garnet Red, tan interior.
Cummins ETC, 5-speed, 3. 54 anti-spin; Line-X
BOMBed! Power Edge module, Auto Meter boost and pyro
gauges on A-pillar; Valentine One
Kenwood TM742 tri-band Ham Radio VHF/UHF/6M & GPS
APRS Tracker N5CWM-14
My 2001 Cummins Ram modifications website
May the Boost be With You!



[This message has been edited by Chris N5CWM (edited 07-07-2000). ]

 

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Chris
Thank you for your post and photo,will try to find parts tomorow,this forum is toooo goood. OLDNO7

 

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There are two such ports in that area. I believe (from reading the service manual 2 months ago) the one further forward is the manifold port. The other, towards the driver, is not a manifold port.

Leo

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2001 ETH/DEE 3500 QC 4x4 SLT, Driftwood/Agate, 3. 54 gears w/anti spin, camper special & towing packages, sprayed bed liner, BD brake w/shift switch & gauge, egt/boost gauge, 2-low switch, weatherguard 5W tool box, Geno's towing mirrors, looking for nerf bars.

 

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Leo, I have heard that as well. The one
further aft has coolant behind it. That
one is also visible in the picture I posted
in my previous message.

Chris

------------------
'01 3500 QC 4x4 SLT, Dk. Garnet Red, tan interior.
Cummins ETC, 5-speed, 3. 54 anti-spin; Line-X
BOMBed! Power Edge module, Auto Meter boost and pyro
gauges on A-pillar; Valentine One
Kenwood TM742 tri-band Ham Radio VHF/UHF/6M & GPS
APRS Tracker N5CWM-14
My 2001 Cummins Ram modifications website
May the Boost be With You!

 

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Thanks for the help guys,I'm all done with gauges now,everything went quite well. Now some testing with my PE and current settup,I'm not getting much differance in boost between the # 2 and #3 setting,2 hits 32lbs. and 3 hits 34lbs.
on 1 I get 29lbs and with the PE turned off I get 26-28lbs. I mounted my pyro in the elbow just behind the turbo and so far I can't get anything past 1100 deg. Sounds o. k. but everyone else is talking about the hot #'s in the 3 setting,I guess differance being I'm runnung the Dr. P phase 2 settup,will have to do a bunch more testing. BOMBED

 

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OLDNO7---Are you "post turbo" with your pyro thermocouple?? That means you're NOT in the exhaust manifold with the sensor?? If so, according to experienced "bombers", you can ADD 500F to your readings. THAT EQUALS 1600F AND A ENGINE MELTDOWN IS EMINANT!!!! I hope like heck I mis-read your post! At any rate, Back off till you get the correct numbers you should be seeing. TST has a lot of information on their website--check it out. www.tstproducts.com Ron

 

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Ron
I checked out tst,now I might be a little concerned,I wonder how hard it would be to mount a manifold thermocouple in conjunction with my post turbo thermocouple,and be able to switch from one to the other on the same gauge?
My post turbo thermocouple is up very close to the turbo in the exhaust elbow,approximately 1 inch from flange.

 

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Chris - is that the MAP sensor next to the tap hole?? I am some what challenged at identifying parts and am getting ready to install my PE. My gauges are a week or so off as the SPA's were out of stock when I ordered. Thanks

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01 2500 SLT+ QC LWB 4x4 Auto 3. 54 rear end Forrest Green Sport with all options avail
DC Nerf Bars, DC Grill Gard, DC mud flaps, Line-X bed liner and Leer 160XL Topper
Power Edge on work bench awaiting install. Gauges and 4" Exhaust in planning stages. Dreaming of transmission
up grades and injectors... ... and some type of Airbox mods.
See My Truck
2000 Skidoo Summit 700

Dads truck: 97. 5 3500 SLT QC LWB 4x4
Brother Truck: 92 2500 SLT QC LWB 4x4 (Dads old truck)