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 conventional 20w50, 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 used oil analysis were ok) with anything synthetic and anything less than a 20-50. This was my first run for this long on pure conventional 20w50 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 conventional 20w50, 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 used oil analysis were ok) with anything synthetic and anything less than a 20-50. This was my first run for this long on pure conventional 20w50 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.
