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-   -   Dyno Day! Question for engine builders - A/F correction factor for dry dyno headers? (https://www.offshoreonly.com/forums/general-q/312970-dyno-day-question-engine-builders-f-correction-factor-dry-dyno-headers.html)

buck35 05-29-2014 06:40 PM

:boat::boat::boat::boat::boat:Great build!
Now you can worry about your bravo......
Congrats and happy boating! I

the deep 05-29-2014 06:47 PM


Originally Posted by Budman II (Post 4129677)
We made several runs making various adjustments to timing and carb jetting. Last run of the day produced peak HP of 584 @ 5500 RPM and peak torque of 605 ft/lbs at 4750 RPM. Engine had a broad, flat torque curve with 604 ft/lbs available at 3250 RPM, and 580+ ft/lbs all the way from the start of measurements at 3000 up to where we stopped at 5750. This was with dyno headers through the stock flame arrestor, with alternator and water pump being driven. All in all, I am pleased. I'll post the sheets and details later on. Need to get this thing unloaded and in the garage before rain gets here.

Nice ! If you are happy then we are all happy for you . :party-smiley-048:

SB 05-29-2014 06:51 PM


Originally Posted by MILD THUNDER (Post 4129693)
I would have jumped right out the basement window on this build. :poopoo:

I hope it's not below ground.

SB 05-29-2014 06:55 PM


Originally Posted by Budman II (Post 4129677)
We made several runs making various adjustments to timing and carb jetting. Last run of the day produced peak HP of 584 @ 5500 RPM and peak torque of 605 ft/lbs at 4750 RPM. Engine had a broad, flat torque curve with 604 ft/lbs available at 3250 RPM, and 580+ ft/lbs all the way from the start of measurements at 3000 up to where we stopped at 5750. This was with dyno headers through the stock flame arrestor, with alternator and water pump being driven. All in all, I am pleased. I'll post the sheets and details later on. Need to get this thing unloaded and in the garage before rain gets here.

I can tell you didn't end up adjusting the lifters correctly. If they where, you would have made another 90+hp and 150ft/lb of torque.

Too bad.
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Jking of course. LOL.

Sit back and relax. Enjoy...for now...you've done good at this point.

Enjoy boating.........in a few years when you actually put it in.....LOL.

Will enjoy reading about that, I'm sure, also.

mike tkach 05-29-2014 06:56 PM


Originally Posted by Budman II (Post 4129677)
We made several runs making various adjustments to timing and carb jetting. Last run of the day produced peak HP of 584 @ 5500 RPM and peak torque of 605 ft/lbs at 4750 RPM. Engine had a broad, flat torque curve with 604 ft/lbs available at 3250 RPM, and 580+ ft/lbs all the way from the start of measurements at 3000 up to where we stopped at 5750. This was with dyno headers through the stock flame arrestor, with alternator and water pump being driven. All in all, I am pleased. I'll post the sheets and details later on. Need to get this thing unloaded and in the garage before rain gets here.

bud,im glad to hear everything worked out and you are happy.now you can have a beer.

MILD THUNDER 05-29-2014 06:57 PM


Originally Posted by SB (Post 4129708)
I hope it's not below ground.

Either way I'd have a major headache!

MILD THUNDER 05-29-2014 07:00 PM

Budman, glad you got it done and dyno'd. Congrats!

Any videos of it running? Or pics of it all done?

the deep 05-29-2014 07:29 PM


Originally Posted by MILD THUNDER (Post 4129716)
Budman,

Any videos of it running? Or pics of it all done?

He has to buff the hammer errr frustration marks out of it first . lol :angry-smiley-044:

Budman II 05-29-2014 08:02 PM

I'll try to get some videos loaded up. Going to be wrenching on it this weekend to get it dropped in. And yes - I think my Bravo is cowering in the corner of the garage. :fear:

tpabayflyer 05-29-2014 09:57 PM

great buildup! torque monster for sure...... what was your jetting with the holley 800? vids would be great...... TBF


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