Box Stock

TG-151 flow data

M

Mr angery

Member
UPDATED TG-151 flow data

FWIW for those that like real ###
SF-60 bench
45 degree cut only at this point.
TG-151 head 20 in-H2o

lift stock seat dropped seat
0.025 6.6 6.5
0.050 12.4 13
0.075 18.8 19.2
0.100 25.1 24.4
0.125 31.7 29.7
0.150 35.7 34.4
0.175 37.3 37.1
0.200 37.5 37.7
0.225 37.8 38
0.250 38.6 38.6
0.275 39.3 39.2
0.300 39.9 39.8
 
they come on new engines from Dyno Cams... And if you don't know about them already you might want to look into them for AKRA stock class stuff. They have performed better on the Dyno and at the track across the board on all 26 of them that I have seen. And the consistency from one to the next is better then what I have seen In the past as well.
 
The JT 151 is legal but I don't think the TG 151 is if that is truly the number. I could be wrong. I've been wrong in the past and quite possibly will be wrong in the future. If I read the post correctly, the numbers are with a 45 cut only. Which means he trued the origional cut and then flowed again. If you put the 30 and the 60 in, there will be a better showing.
 
Sorry gentlemen, I was wrrrr...., wrrrrr...., dang it, I was wrong ! What I have is a JT 151, NOT a TG 151.

Sorry for the confusion.
 
LOL, no problem. The problem I see is they all vary.. I have flowed a pile of heads, and even the same casting numbers vary a fair amount. I have a tg1 on a house engine that flows great, and makes great power.. I have a few others that are poor...LOL (I also have a jt151 that don't do very well either)
 
I've seen the 151 head flow poorly but perform well. I think it has somthing to do with air speed rather than volume. Just a guess I am not shure.
 
Yup Meant JT head oops

Anyway got the other angles cut and pretty happy with the pickup

seat cuts
cfm
0.025 6.8
0.050 13.8
0.075 18.8
0.100 24.8
0.125 31.2
0.150 36.5
0.175 39.1
0.200 39.7
0.225 40.6
0.250 40.8
0.275 41.1
0.300 41.5



amount picked up
cfm
0.025 0.3
0.050 0.8
0.075 -0.4
0.100 0.4
0.125 1.5
0.150 2.1
0.175 2
0.200 2
0.225 2.6
0.250 2.2
0.275 1.9
0.300 1.7
 
Nice data set thank you. I appreciate the effort someone puts forth to test, observe and record, and then share thier data.
 
Mr angery
Couple of questions: OK SF-60 bench 45 degree cut only at this point. TG-151 head 20 in-H2o. What ('a', 'b', 'c', 'd', 'e' plugs in or out) holes do you have open and what level or number are you running at with the SF-60? Also These are without a carb and just flowing head without any adaptor on the intake side, correct?

lift stock seat dropped seat
0.025 6.6 6.5
0.050 12.4 13
0.075 18.8 19.2
0.100 25.1 24.4
0.125 31.7 29.7
0.150 35.7 34.4
0.175 37.3 37.1
0.200 37.5 37.7
0.225 37.8 38
0.250 38.6 38.6
0.275 39.3 39.2
0.300 39.9 39.8
 
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