I raced a modified EVO tonight and lost the first 2 races and one the 3rd. I'm on street tires so after spinning all of 1st & 2nd, it finally hooked in 3rd and when I was catching up to the EVO, it shifted into 4th and started to knock. The 2nd race was the same, but the 3rd race I put it in drive and pulled him especially when the converter locked.
Anyway, I datalogged all of this on turbolink and discovered that the converter slips like crazy when not locked. The transmission shifts great and firm, but the converter is slipping like mad. I used a gear calculator for each shift point and found the converter is slipping about 25-28%. I always knew that this was the case, but never how much. The shifts are around 5500-5600 which is fine for my setup, but it's happening at a low mph IMO. At 95 mph in 3rd, I'm at 5500-5600 rpms, but when locked, I can go up to almost 125 mph at that same rpm. That's a significant difference.
I have a Protorque that I bought from Chris a few months ago waiting to go in because this converter, I feel, is hurting my performance by not putting the power to the ground. I'm afraid to lock it too early because then it might be too much. A litte slip for multiplication is a good thing, but this thing is killing me. I hope the 10.5" Protorque is more efficient under load and unlocked. Any thoughts on converter efficiency in 3rd gear unlocked is greatly appreciated.
Anyway, I datalogged all of this on turbolink and discovered that the converter slips like crazy when not locked. The transmission shifts great and firm, but the converter is slipping like mad. I used a gear calculator for each shift point and found the converter is slipping about 25-28%. I always knew that this was the case, but never how much. The shifts are around 5500-5600 which is fine for my setup, but it's happening at a low mph IMO. At 95 mph in 3rd, I'm at 5500-5600 rpms, but when locked, I can go up to almost 125 mph at that same rpm. That's a significant difference.
I have a Protorque that I bought from Chris a few months ago waiting to go in because this converter, I feel, is hurting my performance by not putting the power to the ground. I'm afraid to lock it too early because then it might be too much. A litte slip for multiplication is a good thing, but this thing is killing me. I hope the 10.5" Protorque is more efficient under load and unlocked. Any thoughts on converter efficiency in 3rd gear unlocked is greatly appreciated.