Port for Turbo Pressure Gauge

[Powder Extreme]

Hi guys, I've looked and can't find it if it's there...



Is there a predrilled /tapped port in the intake manifold for hooking up a boost gauge similar to the old 5. 9's?



Thanks!

 

[JAKE 2544]

According to diesel manor you can remove one of the intake bolts and replace it with a boost bolt like you were able to on the 5. 9,I'll be installing my gauges on the new truck the middle of next week if i get enough time.

 

[JFlagg]

Geno's carries the bolt you need, also didn't know I had the old 5. 9! (02) :-laf



I always though of the 1989 guys as the "old" crowd



No offense intended old guys... . I'll be one soon enough.

 

[Powder Extreme]

Ah, I wasn't aware of the "boost bolt", sounds pretty slick.



My old 5. 9 was an '01 H. O. then I jumped ship for a few years and drove GMC's.

Now that Dodge makes a real 4 door, I'm happy to have a Cummins again.



I knew the 5. 9 inside out, this new 6. 7 just makes me go hmmm. :-laf

 

[marksp]

BOOST ADAPTER ('98. 5-'06 DODGE)-Dodge Cummins and Ford Power Stroke Diesel Truck Accessories - Geno's Garage

 

[Powder Extreme]

Okay, I got the "boost bolt" installed it in the forward most intake manifold bolt, but doesn't work. I placed in the front driverside bolt that holds the air horn to the manifold (directly under the oil dipstick) Evidently that bolt isn't a candidate for a boost bolt. Sooo without having to mess with it on my own, can somebody tell me which bolt they replaced when installing a boost gauge?



Thanks!

 

[JAKE 2544]

If i'm not mistaken it should be a bolt in the center,closest to the cylinder head.

 

[ModifiedDiesel]

If i'm not mistaken it should be a bolt in the center,closest to the cylinder head.

I used the same spot with a boost bolt from Genos

 

[Joseph Donnelly]

Geno's “boost bolt” does work on all 5. 9 and 6. 7 Cummins engines, but it must be installed in one of the holes closer to the valve cover, not out near the edge of the head/intake cover. Also, it must be used in a position where the intake cover is “thin” enough. The front inner bolt of the 6. 7 liter engine also retains the air intake “horn” so a longer bolt would be needed. Farther back along the head, under the beginning of the cowl overhang, is a suitable bolt. TST also offers a version of a “boost bolt” and theirs has the compression fitting integral with it, needing only the “olive” or sleeve that goes over the plastic line, and the nut. The Geno's version, however, allows you to use a 90 degree fitting if needed for clearance or accessibility. Do not overtighten the boost bolt because it will snap easier than the high strength Cummins bolts.

 

[JSmole]

I installed the boost bolt in the forward most hole common to the manifold, closest to the valve cover. Easy to get to, only thing was the boost bolt I ordered was to short to engage in the manifold threads. I was able to get hex. stock from Diesel Manor and have one fabricated from that. I gave them the new length for the bolt, which was 1. 250" inches long. Base of the head to the end of the shank. Drilled and tapped for 1/8 pipe for the compression fitting. Overall length 2. 250".

The other bolts on the inboard side(valve cover) are more restricted as far as access due to the injector lines. Those as well required a bolt length of 1. 250 inches.

Hope this helps!

 

[Powder Extreme]

Okay, I put the bolt where Joe was saying (what a pain in the *** to reach #@$%! ) Now I have a new problem, sigh...



My gauge flutters when it gets over 20psi. It's a DiProcal 35psi that I just removed from my other pickup where it was working fine. Can the flutter be caused by a leak?



I haven't had a chance to really stand on it to see max pressure, but I've seen upper 20's, how much pressure do you normally see on a stock motor? (I'm about 5,000' elevation)



Thanks guys!



PS. Joe, I've been away for awhile, but I don't see Sickly in your sig, finally retired him?

 

[rcelum]

Okay, I got the "boost bolt" installed it in the forward most intake manifold bolt, but doesn't work. I placed in the front driverside bolt that holds the air horn to the manifold (directly under the oil dipstick) Evidently that bolt isn't a candidate for a boost bolt. Sooo without having to mess with it on my own, can somebody tell me which bolt they replaced when installing a boost gauge?



Thanks!

Powder Extreme: Just completed install of the "Boost" gauge. Thanks to Diesel Guru Joe Donnelly, I found and used the "6th" bolt from the front on the valve cover side of the intake manifold. The "5th" and "6th" bolts are both suitable because they do not have a longer depth due to the air horn attachment. The 5th bolt is obstructed by a fuel injector line. The 6th bolt is partially obstructed but is more accessable. I did not have a longer "boost adapter" bolt and the job would definitely be easier with a longer bolt which would allow you to use the longer bolt holes near the air horn. The 6th bolt is a PIA to get to but works well. The boost gauge works well and is very responsive to changes in accelerator pressure.



Good luck in your installation.



Bob

Henderson, Nevada

 

[ModifiedDiesel]

Powder Extreme,

I see peak boost values of around 30-32psi at high rpm, once the engine rpms drop down the boost typically peaks in the low 20s on my truck. (I'm near sea level)