Homemade Turbomaster!!!!
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Diesel Enthusiast
Joined: Apr 2012
Posts: 312
Likes: 18
From: Clarkrange, TN
Homemade Turbomaster!!!!
Last night, I made a turbomaster with a few simple parts and a simple design. I thought I would post the pictures and a short description as to what I did and why. Here goes......
Since I have a junk GM-4 turbo, I cut the actuator rod off of the spring pot and threaded it to 12-24 most of the way down the shaft.
I cut the vacuum pot of of the GM-8 wastegate actuator bracket and ground it smooth. I acquired (2) - 12-24 jam nuts and a #12 lock washer, a spring of unknown spring load with a 7/16 outer diameter, four washers: (2) - 7/16 flat washers, (1) - #12 fender washer (thick), and (1) - 3/8 fender washer (thick).
I welded the 3/8 fender washer to the top of the bracket and then welded one of the 7/16 flat washers on top of that, centering it over the 3/8" hole. Then I welded the other 7/16 washer to the #12 fender washer. The idea of the 7/16 washers is to hold the spring center.
Now with all of this done and a few coats of gray primer, everything is ready for assembly, and then installed on the turbo. After installation, I will cut down the length of the rod just a little longer then the spring and jam nuts, with no load.
I will install this on my turbo in the morning, and I'll take another picture of such. Hope you guys like it!!!
---AutoMerged DoublePost---
I installed my homemade turbomaster this morning (yesterday). Looks and works great. I wanted to start out with low boost (2-3 pounds), for a break in period. I had it set at three pounds within a few minutes.
In a couple of weeks I'm gonna change the oil and raise the boost to about 6 pounds.
Since I have a junk GM-4 turbo, I cut the actuator rod off of the spring pot and threaded it to 12-24 most of the way down the shaft.
I cut the vacuum pot of of the GM-8 wastegate actuator bracket and ground it smooth. I acquired (2) - 12-24 jam nuts and a #12 lock washer, a spring of unknown spring load with a 7/16 outer diameter, four washers: (2) - 7/16 flat washers, (1) - #12 fender washer (thick), and (1) - 3/8 fender washer (thick).
I welded the 3/8 fender washer to the top of the bracket and then welded one of the 7/16 flat washers on top of that, centering it over the 3/8" hole. Then I welded the other 7/16 washer to the #12 fender washer. The idea of the 7/16 washers is to hold the spring center.
Now with all of this done and a few coats of gray primer, everything is ready for assembly, and then installed on the turbo. After installation, I will cut down the length of the rod just a little longer then the spring and jam nuts, with no load.
I will install this on my turbo in the morning, and I'll take another picture of such. Hope you guys like it!!!
---AutoMerged DoublePost---
I installed my homemade turbomaster this morning (yesterday). Looks and works great. I wanted to start out with low boost (2-3 pounds), for a break in period. I had it set at three pounds within a few minutes.
In a couple of weeks I'm gonna change the oil and raise the boost to about 6 pounds.
Last edited by cviola2005; Aug 30, 2012 at 03:13 AM. Reason: Automerged Doublepost
Diesel Wrench
Joined: May 2011
Posts: 525
Likes: 12
From: Rehoboth, MA
nice! i hope your running a boost gauge tho.
btw as far as the belt thing, all i did was took the bottom part of my vaccum pump off, so it ran as an idler and i didnt spend all day looking for a belt that would fit
btw as far as the belt thing, all i did was took the bottom part of my vaccum pump off, so it ran as an idler and i didnt spend all day looking for a belt that would fit
Thread Starter
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Diesel Enthusiast
Joined: Apr 2012
Posts: 312
Likes: 18
From: Clarkrange, TN
its not an actual "boost" gauge, bought as such. Its a pneumatic gauge that registers (IIRC) 15 lbs vacuum - atmosphere (0) - 30 lbs pressure. I assume it will work the same. gauge comes up to 3-4 lbs under heavy load.
