I finally got around to installing the new heads, intake, cam (flat tappet), and turbo. I have a few gallons of ACD that I'm going to use to break the cam in for 30minutes.
Using Superflo dino 20w-50, the engine still has the cross hatching at 20,000 miles at the highest power level and boost the car has ever seen.
As many know, I have had bad wear as shown by teardowns (even though UOAs were ok) with anything synthetic and anything less than a 20-50. This was my first run for this long on pure dino 20-50 and it's the best the cylinders have ever looked. The shortblock was left in the car so I don't know what the bearings look like but oil pressure is great. The new dual ball bearing turbo with it's oil restrictor has increased pressure a little also.
My dilema is I really really want to try a Redline straight weight. I know I should stick with what works but on the flip side, my 4.5L forged engine is nearing completion, the GN is just a toy, and I have less than $2,000 in the shortblock so if it did wear out quickly it's not the end of the world. If it lasted a while I would feel better about running syn in the new more expensive engine.
I was also thinking that since I know the engine is healthy (I will be performing a leakdown soon) my curiosity is getting the best of me. If it wears out quickly after installing synthetic then my mind is made up forever.
Using Superflo dino 20w-50, the engine still has the cross hatching at 20,000 miles at the highest power level and boost the car has ever seen.
As many know, I have had bad wear as shown by teardowns (even though UOAs were ok) with anything synthetic and anything less than a 20-50. This was my first run for this long on pure dino 20-50 and it's the best the cylinders have ever looked. The shortblock was left in the car so I don't know what the bearings look like but oil pressure is great. The new dual ball bearing turbo with it's oil restrictor has increased pressure a little also.
My dilema is I really really want to try a Redline straight weight. I know I should stick with what works but on the flip side, my 4.5L forged engine is nearing completion, the GN is just a toy, and I have less than $2,000 in the shortblock so if it did wear out quickly it's not the end of the world. If it lasted a while I would feel better about running syn in the new more expensive engine.
I was also thinking that since I know the engine is healthy (I will be performing a leakdown soon) my curiosity is getting the best of me. If it wears out quickly after installing synthetic then my mind is made up forever.
