Some of you may have seen my earlier post "353 rwhp, 383 rwtq, WTF".......
Anyways I think I got to the bottom of my problem with low RWHP. Basically with my current mods and based on looking at over 20 dyno charts of BPU-/BPU/BPU+ cars for comparison I fell I should be making 415 rwhp but I only put down 353.
I had a compression test done today and here are the results:
Cyl.
#1 140
2 130
3 140
4 135
5 130
6 130
Average = 134 psi
Normal Compression = 156
Minimum compression = 128
Mike at altered atmosphere said the norm was 150-165. Warren said about 150 is the norm.
Obviously something is wrong and I believe that since my compression is 15% lower than normal it would explain why I am lacking 60 more rwhp. Does everyone agree?
The next thng is what could be wrong?
Bad seals, piston rings, pistons, valve adjustment needed? I am going to do a leak down test ASAP and then hopefully use my extended warranty.
Has anyone ever seen/heard of this type of problem? I though the Supra engines were bullet proof?
Other things to note:
mobile 1 every 3K
51K miles
BPU+ (Greddy FMIC)
previous dyno on 94 pump gas
Profec A ( switching to an EVC-EZ) holds only 18 psi or so
Oil goes low 1 qt at oil change but I don't see smoke out of the exhaust.
Thanks for your help!nullnullThe next thng is what could be wrong?
Anyways I think I got to the bottom of my problem with low RWHP. Basically with my current mods and based on looking at over 20 dyno charts of BPU-/BPU/BPU+ cars for comparison I fell I should be making 415 rwhp but I only put down 353.
I had a compression test done today and here are the results:
Cyl.
#1 140
2 130
3 140
4 135
5 130
6 130
Average = 134 psi
Normal Compression = 156
Minimum compression = 128
Mike at altered atmosphere said the norm was 150-165. Warren said about 150 is the norm.
Obviously something is wrong and I believe that since my compression is 15% lower than normal it would explain why I am lacking 60 more rwhp. Does everyone agree?
The next thng is what could be wrong?
Bad seals, piston rings, pistons, valve adjustment needed? I am going to do a leak down test ASAP and then hopefully use my extended warranty.
Has anyone ever seen/heard of this type of problem? I though the Supra engines were bullet proof?
Other things to note:
mobile 1 every 3K
51K miles
BPU+ (Greddy FMIC)
previous dyno on 94 pump gas
Profec A ( switching to an EVC-EZ) holds only 18 psi or so
Oil goes low 1 qt at oil change but I don't see smoke out of the exhaust.
Thanks for your help!nullnullThe next thng is what could be wrong?