Plugging my wastegate line...

[Six_Man_Diesel]

Does this do any harm?????? I know it added around 16lbs of boost when I plugged it.

 

[Deezul1]

I had mine plugged for quite a while with no trouble.

 

[Six_Man_Diesel]

Thanks for the reply, I'll leave it plugged for now, sure does make a difference.

 

[BFaoro]

Boost Ammount

If you do a search I beleive Piers recomended that you don't go over 32 pounds of boost. Make sure you have a guage. I plugged my line and now I get 27 pounds of boost.

 

[HoleshotHolset]

I get 39psi peak with a stock WH1C - 12cm. I get the feeling that it doesn't like boost that high, though. It tends to really squeal above 25-30psi.



Matt

 

[The patriot]

I shortened my wastegate rod after installing the 370's at Piers' reccomendation. (wasnt getting enough boost, and high EGT's)

I'm now running over 36psi.



Eric

 

[sewman]

I got a 16cm housing & buring my guage @ 40lbs.

Santa didn't bring me a 60psi so I guess I'll have to buy one!

Bob

 

[Dave Remillard]

How does one go about plugging the line? I would be willing to give it a try to see how I like it. Thanks

 

[HoleshotHolset]

Plug it off wherever you want... . either at the wastegate actuator itself, or over by the AFC end of things. I chose to take a flat-blade screwdriver and loosen that one little clamp that goes to the hard steel line which goes inbetween the valve covers and over to the WG. After the clamp is loosened... . take the rubber hose off the metal line... and insert something smooth into the rubber line so you plug it off and don't ruin things. Tighten the clamp with the previously aformentioned screwdriver... . and plug off the metal line with a rubber nipple... . or zipple as some would say.



Depending on the year of your truck you will see some changes as to the location of lines and their routing... but the idea is still the same... . keep the boost where it needs to be (AFC, intake, etc. ) and keep the boost signal away from the WG actuator.



Hope this helps.



Matt

 

[Bud Fox]

I thought this discussion was brought up before and the concensus was NOT to plug the wastegate. If i remember correctly someone said that this caused excessive heat with the pistons with the wastegate plugged. I will have to do a search and give the link. I do remember that after i read the article I just was getting ready to do an oil analysis. And when my results came back my aluminum content was a little high( at the time I had a plugged wastegate) I remember in the article someone saying this might happen with a plugged wastegate so I unplugged mine and have yet to get another analysis, but i remember thinking I would rather be safe than sorry

 

[Bud Fox]

SLewis Do a search on TED JANNETY or just enter in wastegate on your search or here



Boy it sure is funny how many times the same questions get asked on this board over and over again. Nothing personal SLewis but when I was trying to help you out I did a search with WASTEGATE and the same question always seem to appear as the one you asked. Ted has some responses you can read if you get time or you can just call him.

 

[BFaoro]

Search

Look in the search and type in as the topic, "How to Get More Boost", date of 02-19-2001. You can make your decision what is good for you. The article by Ted Jannety is great, it talks about the efficency map and such !!

 

[HoleshotHolset]

Going outside the efficiency map for a few seconds every once in a while isn't going to hurt much, but pulling a 25k trailer for 12 hours at 35psi might do something to that poor little Holset, not to mention your 6BTA/drivetrain.



Efficiency maps are designed to let people choose a proper compressor housing/wheel based on what kind boost they need, and at what RPM's they need it. Go beyond the compressor's range and you overspin it... . creating wear on the CHRA and excess discharge temps from the fact that the compressor isn't designed for high boost like we're asking from it.



I'd like to think that my EGT gauge would show me if I were about to burn a piston or six due to overspinning my Holset... . if I were blowing hot air out of my maxed out turbo into my hard working engine.



There are exceptions to every rule.



Matt

 

[Six_Man_Diesel]

Sorry bout that, I just subscribed the other day, so bear with me hehehe, thanks for the replies though.

 

[GFreshour]

Max boost

Plugged line, no line, max boost I can get is 12 psi. I have 490k on the engine/turbo. Do you think the turbo is worn out at 12psi?? Or is there another problem??

 

[DieselB59]

You need to get a boost test done on your truck where the intercooler and intake tract is pressurized on the engine so that you can see if you're leaking air through the soldered tubes/tank area of the intercooler, or your intercooler fittings, or better yet, wastegate actuator.