Offshoreonly.com
Page 4 of 6
« First
2
3
4
5
6
Show 40 post(s) from this thread on one page

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   Another build dyno'd today. Whippled 509. (https://www.offshoreonly.com/forums/general-q/322244-another-build-dynod-today-whippled-509-a.html)

stimleck 01-20-2015 01:28 PM
does this challenge traditional thinking about the bang for the buck method of growing hp?
Forced induction versus NA heads, cam intake?
Seems like the value may be better with a whipple?

BTW what octane was the motor running?

Cole2534 01-20-2015 01:30 PM
Originally Posted by stimleck (Post 4252927)
Mike how will you check afr's on a carbureted engine?
O2 sensors in the tails, or on each runner of the dyno header.

BP 93 for fuel.

buck35 01-20-2015 03:00 PM
Originally Posted by Cole2534 (Post 4252907)
How much length does the Whipple add to the engine? My compartment is TIGHT.
Cole, I think I read 11/2 to 2 inches. Yes very tight if yours is set up like mine.

MILD THUNDER 01-20-2015 03:15 PM
Originally Posted by stimleck (Post 4252929)
does this challenge traditional thinking about the bang for the buck method of growing hp?
Forced induction versus NA heads, cam intake?
Seems like the value may be better with a whipple?

BTW what octane was the motor running?
One things for sure. You ain't gonna see 800+ft lbs out of a N/A pump gas 509 at 3000rpm. I don't care how small of oval ports you use lol

Rookie 01-20-2015 03:27 PM
Impressive #'s for sure. Is the 2000RPM gap between peak TQ and HP normal? That seems like a lot.

MILD THUNDER 01-20-2015 03:38 PM
Originally Posted by Rookie (Post 4253001)
Impressive #'s for sure. Is the 2000RPM gap between peak TQ and HP normal? That seems like a lot.
I've never seen it with a roots blower. Maybe Eddie young will chime in I know he's done plenty of builds with these small Whipple's

Black Baja 01-20-2015 04:03 PM
Sounds like it needs more carb. The motor started to swallow the boost by the end of the pull.

rmbuilder 01-20-2015 04:24 PM
Originally Posted by Rookie (Post 4253001)
Impressive #'s for sure. Is the 2000RPM gap between peak TQ and HP normal? That seems like a lot.
Rookie,

We see 1800-2200 quite often on the forced applications.

Bob

mike tkach 01-20-2015 04:33 PM
Originally Posted by Black Baja (Post 4253026)
Sounds like it needs more carb. The motor started to swallow the boost by the end of the pull.
the carb and spark arrestor are both to small,i mentioned it earlier in the thread.the boost was going away because the 2.3 is really to small for this size engine.

mike tkach 01-20-2015 04:36 PM
Originally Posted by Rookie (Post 4253001)
Impressive #'s for sure. Is the 2000RPM gap between peak TQ and HP normal? That seems like a lot.
it has been my experiance that the screw blowers start making the torque at a pretty low rpm.


All times are GMT -5. The time now is 07:13 PM.
Page 4 of 6
« First
2
3
4
5
6
Show 40 post(s) from this thread on one page


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.