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Topic: NPR Intercooler Installed! Vacuum Line Questions... (Read 787 times) previous topic - next topic

NPR Intercooler Installed! Vacuum Line Questions...

After about 4-5 hours of work yesterday, my bro and I got my large NPR and Ranger radiator installed in the TC. It was a bit more work than I'd hoped, but it turned out pretty darn good. We took it out for a quick spin to see how she ran, I built about 4 pounds of boost and shifted and heard the loudest WHOOSH! ever! Then the car stalled. Well, dumbass me forgot to tighten the hose clamp on the Forge RS BOV and the thing shot right off the IC tube.

Fixed that and drove it for about another 30 seconds, had a shin-dig to get to. It wouldn't "blow off," but I have a feeling that is because I had the valve set for 20 PSI (the Forge RS has a  on the top to adjust spring force).

Regarding the vacuum line that goes to the BOV, is it OK to source that right off the vacuum tree (87 TC)?

Also, with the stock IC there was a T fitting with two vacuum lines coming off, one going to the vacuum tree with some check valves, the other going to the turbo inlet. What are these for? Can I just cap them off? As always, thanks for the help.

Oh, and I'll post pics with my powder coated parts soon ;-)

NPR Intercooler Installed! Vacuum Line Questions...

Reply #1 –
What turbo are you running? IHI or T3. I'm really interested on how it turns out because thats what I have planned for my 88 TC.I picked up a T3 off an 86 SVO for free. I also have a 3" down pipe and header pipe that goes to 3.5" with ler and tail pipe out of my buddies 02 f-350 7.3 not a bolt in but some fab and cutting will work also free. sorry to hijack but I'm so stoked!


louie
louie  :birdsmily:
[SIGPIC][/SIGPIC]       
My famous last words:
It seemed like a good idea at the time.        88TC R.I.P.      88 Sport build in progress

NPR Intercooler Installed! Vacuum Line Questions...

Reply #2 –
just cap the hoses from the old intercooler, they were kind of a stock bypass valve. i have my bov hooked to manifold vacuum so anywhere on the tree should work, is your bov a bypass style?
95 Ranger Splash 2.3
88 Tbird Sport :ies::ies:
5.0 SO, stainless shorty headers, w/ Magnaflow lers. KYB struts, KYB shocks. 5lug conversion from sn95 Mustang, subframe connectors, drilled and slotted rotors, 03 Mach 1 wheels. sequential taillights.140 speedo

NPR Intercooler Installed! Vacuum Line Questions...

Reply #3 –
Quote from: Inspiribomb;136265
Regarding the vacuum line that goes to the BOV, is it OK to source that right off the vacuum tree (87 TC)?

Also, with the stock IC there was a T fitting with two vacuum lines coming off, one going to the vacuum tree with some check valves, the other going to the turbo inlet. What are these for? Can I just cap them off? As always, thanks for the help.



#1- Yeah, you can just run a vac line off the tree, that's how I did mine.

#2- Those lines are for the cruise control. If you don't hook them back up, your cruise won't use boost when it tries to maintain speed.

Garrett H.
'94 F250 XLT- 4x4, 5 speed, 7.3 IDI Turbo Diesel, 4" intake, 4" exhaust, 5" turnout stacks, manual hubs, etc.
'87 Thunderbird Turbo Coupe
Engine, wheels, tires, etc!
Exhaust sound clip
Another clip

NPR Intercooler Installed! Vacuum Line Questions...

Reply #4 –
I ran a line from the tree, and T'd it for my boost controller and BOV.
It's Gumby's fault.
 

NPR Intercooler Installed! Vacuum Line Questions...

Reply #5 –
To update, I turned down the spring force on the Forge valve and it blows off great now.  It is LOUD.  Cruising at 65 on the freeway it drowns out the exhaust, I love it.

I am running the IHI at 17 PSI.  There is no noticeable difference in boost response due to longer IC tubing.  I find the "trailer hitching" to be minimal at worst. The only real adverse side affect of running the BOV is that when I put in the clutch to come to a stop sometimes the engine almost dies. I guess that's just the nature of venting metered air with our cars.

The NPR intercooler sits about 4 inches in front of the radiator and never even gets warm. I find the Explorer aluminum single-row radiator is more than adequate for cooling the car. I still have to try the Forge 004 BOV this week, but have a feeling that I'll be keeping the RS and selling the 004.