Big Al's ride has 475hp!

[The Big Al]

Not bad for a Small Block!!! HA HA!!!
And still having a midrange problem.
We think it's in the MSD.

Can't wait to NOS it! Thats gonna be a blast!

Video!!! http://media.putfile.com/Nova-Dyno-Run-9-18-07-475hp

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[HiLift]

What's the black line represent Al?
I dunno, I don't think I've ever seen a dyno sheet look like this one before.
What's the safe operating max. revs of this engine? What kind of heads and what do they flow? Compression ratio?

[Raceman]

What's the black line represent Al?

That's Al's Viagri graph.

[HiLift]

Runs outta steam pretty fast huh?

[The Big Al]

The black line is fuel enrichment.
And we have a problem.

A big one.

Working on it now.

When the line goes down we are to rich.

And I am very very rich when the secondary comes in.

Has bad bog then it clears and takes off.

You can tell in the video what is happening.

Might be the Digital MSD or just fuel system.

That's being worked on right now.

heads are AFR 210cc CNC max ported with 5/16 steam valves for max flow.


Anything else I will have to kill you~!

[The Big Al]

That's Al's Viagri graph.

HA HA good one!

I need no Viagra with that ride!
it gives it too ya!

[Astro]

good luck with the floodin! If that thing dynos any higher I will have to break out the Vega

[slowverado]

not bad, we just pulled my latest bracket LSx motor off the engine dyno. Just over 940 on the engine dyno. Should come out to high 800s through the liberty.

[HiLift]

Actually Al, going by the graph it looks like you're too lean on the top end starting at about 4300rpm. Is she making any "popping" noises?
Those 210cc heads should let 'er breathe pretty good up through the midrange into the top end.
What kinda cam are you running? Comp ratio?

[The Big Al]

Actually Al, going by the graph it looks like you're too lean on the top end starting at about 4300rpm. Is she making any "popping" noises?
Those 210cc heads should let 'er breathe pretty good up through the midrange into the top end.
What kinda cam are you running? Comp ratio?

The lower the line the richer! Not leaner.


Did you hear any popping nosies in the video?

Have found problem so next test will be different!

AL

[The Big Al]

The ideal Air Fuel Mixture should ideally hover between 12.5:1 to 13.5:1

The lower the ratio the richer the fuel.

it starts of good, the secondary is very very rich and related to air bleed and jet adjustment.

And nozzle changes.

The hump is the accelerator pumps stoping and the secondary transferring and become the draft source of power.

This is were Fuel Injection kicks a carbs ASS!

[Chummy]

Very nice Al be cool to see what some tuning does

[HiLift]

Thanks for the explanation Al, the graph makes sense to me now!
I'd not seen one before that's laid out like that.
I guess they use a tailpipe sniffer to detect A/F mixture?

[Fast Fred]

I guess they use a tailpipe sniffer to detect A/F mixture?

or was that exhaust gas temp curve?

[Fast Fred]

seein the AFR on the right now. thay got a sniffer for that, dose that work (the sniffer) on it own, like on an outboard in a test tank with a test wheel
on it, for just rpms to AFR ?