Paveltolz
Доверяй, но проверяй
With the differential out, I figured I'd finally get at this project I've had on the shelf for the better/worst part of a year.
If you're ditching the GM-X in favor of another Turbo, odds are that the oil return line needs modification.
When I bought the ATT from 635 years ago, he’d had his return line set up modified to use a braided stainless hose with AN-8 fittings that routed to the outside of the exhaust manifold rather than running between it and the block. The down tube and the block's oil return adapter were modified to accept the AN-8 fittings with an AN-10 to AN-8 adaptor. The block fitting was modified with a 90* AN-8 fitting.
This set up worked equally as well when switching back and forth to GM-Xs and certainly made things easier as you could remove the line from the turbo via the AN fitting and then remove the down tube from the turbo after it was out of the truck. A definite plus for me back when I was swapping them out every 10 tanks of fuel
Unfortunately, I had to abandon the set up as the adapted down tube was too long to work with Heath’s Super-84 as it is positioned closer to the exhaust. As I had the a prototype turbo (not the whole kit currently being marketed), I had to make due with an on the spot fab. That meant I had to cut the OEM tube just before it made the bend to drop behind the exhaust manifold and mount it 180* from its original position. A 5/8” hose is routed to the outside of the manifold and attached at the turbo and at the engine block with hose clamps. Functional but…
Disclaimer/Clarification--The set up in the Marketed turbo kit is, as per design, a much better unit. Bill has sent me one but I decided that if I was going to take things apart to correct my 'temp' job, I was going to do it they way I really wanted it.
Desiring the old set up, I Googled the turbo mount and came up with a billeted AN-10 part. While I could make a complete set up with the original hose, it just wasn’t working out so, it was back to the drawing board. I chose to go with a larger diameter hose set up as I had to go with AN-10 at the turbo to make the angle and still clear the exhaust manifold.
Pieces Parts
Completed unit.
So, I sourced 45* AN-10 fittings and larger hose along with an AN-8 to AN-10 adaptor for the engine block.
New pieces parts
Laid out, it was the same length as the old set up but it connected up just fine and had the needed clearance.
New unit assembled with the old hose for comparison
Here's a comparison of the different turbo down tubes...new, hack job, old
After test fitting and such, bing batta bling it was in and done.
With the air filter box back in place, you have to look for it but I know it’s there and that’s what matters.:thumbsup:
If you're ditching the GM-X in favor of another Turbo, odds are that the oil return line needs modification.
When I bought the ATT from 635 years ago, he’d had his return line set up modified to use a braided stainless hose with AN-8 fittings that routed to the outside of the exhaust manifold rather than running between it and the block. The down tube and the block's oil return adapter were modified to accept the AN-8 fittings with an AN-10 to AN-8 adaptor. The block fitting was modified with a 90* AN-8 fitting.
This set up worked equally as well when switching back and forth to GM-Xs and certainly made things easier as you could remove the line from the turbo via the AN fitting and then remove the down tube from the turbo after it was out of the truck. A definite plus for me back when I was swapping them out every 10 tanks of fuel
Unfortunately, I had to abandon the set up as the adapted down tube was too long to work with Heath’s Super-84 as it is positioned closer to the exhaust. As I had the a prototype turbo (not the whole kit currently being marketed), I had to make due with an on the spot fab. That meant I had to cut the OEM tube just before it made the bend to drop behind the exhaust manifold and mount it 180* from its original position. A 5/8” hose is routed to the outside of the manifold and attached at the turbo and at the engine block with hose clamps. Functional but…
Disclaimer/Clarification--The set up in the Marketed turbo kit is, as per design, a much better unit. Bill has sent me one but I decided that if I was going to take things apart to correct my 'temp' job, I was going to do it they way I really wanted it.
Desiring the old set up, I Googled the turbo mount and came up with a billeted AN-10 part. While I could make a complete set up with the original hose, it just wasn’t working out so, it was back to the drawing board. I chose to go with a larger diameter hose set up as I had to go with AN-10 at the turbo to make the angle and still clear the exhaust manifold.
Pieces Parts
Completed unit.
So, I sourced 45* AN-10 fittings and larger hose along with an AN-8 to AN-10 adaptor for the engine block.
New pieces parts
Laid out, it was the same length as the old set up but it connected up just fine and had the needed clearance.
New unit assembled with the old hose for comparison
Here's a comparison of the different turbo down tubes...new, hack job, old
After test fitting and such, bing batta bling it was in and done.
With the air filter box back in place, you have to look for it but I know it’s there and that’s what matters.:thumbsup:
