- Thread starter
- #461
Since we've got no snow and the weather's been really mild, I decided to take my intake manifold off and tear into my my boost compensator to install a new aneroid pin I got a few weeks back.
Old pin/original pin, you can see where the guide pin has been riding on it. Looks like it was going into the over-fueling section of the profile.
New pin installed onto the diaphragm.
Made up a 'test apparatus' to run the pressure up and down and see where the guide pin will ride on this rod, and adjust the spring tension.
From what I've been told, on a more accessible compensator, you can drive/adjust/drive, but since I have to pull the intake manifold to access it, I wanted to get it close the first time.
Paint pen, first run up to 20 psi. several times. You can see it's riding up on the upper part of the profile in the fuel cut/over fuel section. Which means I need more spring pre-load/back out on the toothed wheel to add spring tension.
Probably put it in and out 20 times, I got the pin to ride in the lower section of the profile, then would adjust it a few clicks, to try and get it to ride up into the flat section, but before the top section, and I'd lose the marking altogether, like maybe the pin isn't touching the aneroid rod at all. The sun set, it got cold, hands were cold, had to put on a headlamp, figured I'd settle for what I had with it riding on the lower section and button it up and take it for a spin.
From what I could tell on my quick drive, is it looks like it's less smokey, seems to still have good power, need to drive it more. I'm tempted to grind the old pin a bit, so I can mess with it too.
Videos I used for some guidance, and a Gturbo tuning guide pdf as well.
Old pin/original pin, you can see where the guide pin has been riding on it. Looks like it was going into the over-fueling section of the profile.
New pin installed onto the diaphragm.
Made up a 'test apparatus' to run the pressure up and down and see where the guide pin will ride on this rod, and adjust the spring tension.
From what I've been told, on a more accessible compensator, you can drive/adjust/drive, but since I have to pull the intake manifold to access it, I wanted to get it close the first time.
Paint pen, first run up to 20 psi. several times. You can see it's riding up on the upper part of the profile in the fuel cut/over fuel section. Which means I need more spring pre-load/back out on the toothed wheel to add spring tension.
Probably put it in and out 20 times, I got the pin to ride in the lower section of the profile, then would adjust it a few clicks, to try and get it to ride up into the flat section, but before the top section, and I'd lose the marking altogether, like maybe the pin isn't touching the aneroid rod at all. The sun set, it got cold, hands were cold, had to put on a headlamp, figured I'd settle for what I had with it riding on the lower section and button it up and take it for a spin.
From what I could tell on my quick drive, is it looks like it's less smokey, seems to still have good power, need to drive it more. I'm tempted to grind the old pin a bit, so I can mess with it too.
Videos I used for some guidance, and a Gturbo tuning guide pdf as well.