Brent's
1st pull was with 75/85 jets, 16* of total timing and made 709 RWHP and
821 RWTQ at 5000 RPM's. A/F was 11.45, this was a pull to make sure the
A/F was safe before they took the motor higher in the RPM's.
Second
pull with 75/85 jets, 16* of total timing, it made 845 RWHP and 891 RWTQ
at 6000 RPM's. A/F was 11.55
Third
pull with 75/91 jets, 16* of total timing, it made 868 RWHP and 911 RWTQ
at 6000 RPM's. A/F was 10.70, the motor definately liked the extra fuel.
Forth
pull with 75/91 jets, 20* of total timing, it made 886 RWHP and 916 RWTQ
at 6000 RPM's. A/F 11.82, here it liked the fuel and timing change.
Fifth
pull with 80/91 jets, 24* of total timing, it made 821 RWHP and 892 RWTQ
at 60000 RPM's. A/F 10.26, and here they lost 65 HP from the previous pull
due to the additional fuel added to the primary side even though they added
2 more degrees of timing.
Sixth
pull with 70/91 jets, 24* of total timing, it made 888 RWHP and 917 RWTQ
at 5200 RPM's and he blew number 5 head gasket on that pull and A/F went
to 13.8, they were so close to the majic 900 HP. Brent is currently awaiting
on a new 88mm turbo to go back to the dyno and go for at least 900-950 RWHP.
Stay tuned.
All
pulls netted 27.7 psi of boost from a small Precision turbo PT-74, R302
motor, TFS high port heads(ported), F-303 cam, Weiand X-celerator intake(ported),
CSU 750 annular carburetor, EV bonnet, Hanger 18 fabrication Air-to-water
intercooler and homemade turbo kit.
Brent said that the older version of his EV hat performed flawless. He has
the none O-ringed version that requires a gasket but may purchase an O-ringed
version for the look of the bonnet without a gasket under it.
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