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-   -   Waste gate opens to soon? (https://www.dieselbombers.com/12-valve-2nd-gen-dodge-cummins-94-98/80297-waste-gate-opens-soon.html)

dieselpower91 07-28-2011 01:59 AM

Waste gate opens to soon?
 
Im having high egt problems, new stock turbo, if the wastegate isnt adjusted right and opens to soon, coul that be why my egts get to 1400 deg.?

94 12valve 07-28-2011 11:10 AM


Originally Posted by dieselpower91 (Post 779404)
Im having high egt problems, new stock turbo, if the wastegate isnt adjusted right and opens to soon, coul that be why my egts get to 1400 deg.?

could if the 1400* is with very little boost

dieselpower91 07-28-2011 09:00 PM

yes, im pretty sure i was at 25psi, this turbo sucks compared to my other one i had.
but, this one seems like its opening too soon.

BRE 07-29-2011 02:50 AM

Why start two threads?

94 12valve 07-29-2011 05:48 AM


Originally Posted by dieselpower91 (Post 779804)
yes, im pretty sure i was at 25psi, this turbo sucks compared to my other one i had.
but, this one seems like its opening too soon.

thats not what I ment by little boost ... if the gate was stuck open you couldent build boost until the top end

dieselpower91 07-29-2011 09:40 AM

oh i misunderstood, but a put a pressure/vacuum gun on the wastegate, it opens at 25psi, it actuates just fine.
how would i go about adjusting it?

94 12valve 07-29-2011 10:53 AM

through your boost elbow

dieselpower91 07-29-2011 11:16 AM

no, i wasn't sure, doesn't the boost elbow only restrict high flow pressure? i think if i put my pressure gun on it it will open at the same time? but i will give it a try.

zjohnsonua 07-29-2011 11:55 AM

I didnt see that you had two threads and had already checked the travel. Yes, the boost elbow only adjusts pressure. Your actuator rod just needs to be shortened. Start with one turn of the rod end since it won't take much adjustment to get the wastegate right.

94 12valve 07-29-2011 01:02 PM


Originally Posted by zjohnsonua (Post 780102)
I didnt see that you had two threads and had already checked the travel. Yes, the boost elbow only adjusts pressure. Your actuator rod just needs to be shortened. Start with one turn of the rod end since it won't take much adjustment to get the wastegate right.

no need to shorten the rod with a boost elbow ... all you have to do is adjust the elbow. if you know 25 psi is when the gate goes full open set the press comming from the elbow to 25 psi when you want the gate to open.


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