Boost tube...

[Oil Ape]

I was dreaming through the Geno's catalog today and noticed the picture of the Prime-Loc Filter Relocation Kit. Is that the boost pressure gauge tube coming out of the Intake Manifold supply tube? If that is, has anyone done it? I'd think the readings from there would be accurate and the install probably easier than trying to squeeze my fat fingers behind the injector lines to remove that existing plug.

 

[dresslered]

I tapped my intake manifold horn for the boost gauge as well. I have heard of many people getting gauge fluctuations using the 3/4" plug (others claim that it works great). I also liked the fact that I could run the tubing along the dipstick tube and not having to make the sharp bend toward the plug. If you decide to go this route, be sure to remove the horn during the tap so that you can remove all the filings.

 

[Ron Bissett]

tap the intake ?

I taped the intake four in up from the hose connection with out taking the intake off ,just removed the clamp from the hose took the hose lose from the intake and covered with a plastic bag and rubber band stuffed large palastic bag up past place to drill and tap about four in up from where horn goes from round to square I taped the top side your choise . drilled taped Pulled large bag from horm (verry important ) eng will not run on plastic note I let some plastic show out of the horn just to make sure I did not forget to remove, removed the bag from intake and any shavings that did not fall out removed with lint free rag. Took bag from hose recommected to horn reclamped , used vacuum hose and brass fittings and used anti-size no teflon . hope this helps Ron in LOUISVILLE KY Oo. Oo. Oo.

 

[Thomas]

I ran mine the same as David. I have the vacuum hose armored with three-eights inch air brake line-from the fitting on the air horn through the firewall.

 

[illflem]

The 1/8" plug location on a 12 valve doesn't seem to fluctuate like the 3/4 on a 24. I tapped my intake and put a temp sender toggled with my transmission temp gauge though. Interesting to see that drawing hot underhood air doesn't make as big of difference as folks think. If you do this your temp gauge should read down to zero.

 

[rono]

I used the 3/4" plug location and the Dakota Digial guages and there is absolutly on flucuation at all. Had to use two bushing to reduce down to the 1/8" ntp. for the grease hose.

rono

 

[K_Arts]

So when you tap the intake horn, how accurate are the readings?



Due to the fact... . of the air going through the horn is blowing right by the boost plug and not into the plug. Does that make sense?



The air has to make a sudden turn to get inside of the boost plug... It just doesn't sound like it would be an accurate reading.



Kev

 

[dresslered]

K_Arts-

It is very accurate. My ETH reads exactly 20. 5-psi of maximum boost which is what you should see for a stocker. Don't worry about the air blowing right by as the pressure is all the same.

 

[K_Arts]

Well, I ask because I am thinking about moving mine from the 3/4 plug to the intake horn.



It seems no matter how much power I add, I can not see above 30lbs of boost from the 3/4 plug... . so I am wondering just how accurate that plug is...



It makes no sense when I can add anywhere from 50-100 hp... and have the same boost.



Kev

 

[dresslered]

I don't believe that you will see a difference in boost pressures between the two locations. The only thing that some people have reported in the 3/4" plug location is some fluctuations. I have heard of some people having slight leaks in the boost tube, however. This is sometimes the result of over-tightening the fitting and distorting the tube. Just a thought?