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Discussion Starter · #1 ·
Been buying stuff from US for years and great information gleamed from a lot of sites. I use the engine L67 in a jet race boat. We race for 40 minutes at a time flat out, hence I have a few broken parts. I seem a little obsessive. We dont have flash dynos in New Zealand, the engine dyno I use only has a power gauge and a calculator so I cant really expect you to believe the HP and torque figures. Mods are
stroked to 4.2 litres
custom rods and pistons
thrasher cam
intense stage 3 heads
1.8 roller rockers
1000cc injectors
vortec V1-T trim race blower
vortec Mondao intercooler and bypass value
Motec M800 ecu
Motec CDI ignition
Motec E888 data logging
we run at 21 pounds of boost at 5600 rpms
 

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Discussion Starter · #3 ·
695 HP @5600 prms
671 Foot pounds of torque @ 5500 rpms

and as you can see from my other message under bottom end I have a few problems with oil, the world champs are 12 months away and I need lots of advice.
 

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OK, it's time for the box of tissues to come out and clean the screen off.

I thought I did some weird stuff with V6's but that is damn cool.
 

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Discussion Starter · #5 ·
blownvn said:
OK, it's time for the box of tissues to come out and clean the screen off.

I thought I did some weird stuff with V6's but that is damn cool.
Thanks for the compliment, started 4 years ago with stock motor and each time we dynoed it we gained 100hp, but we are probably at the limit for the sport we are in, however after the world Jetboat marathon in October 2005 we are going to put the motor in a drag car for a couple of runs as the engine builder is into that sport and it only seems fair to return the favour.
 

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Impressive #'s!

Someone should post this over in that cam Dyno comparison thread :D :eek:
 
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