Re: HELP! 440 Wedge Can't keep up with a Saab 9-3 HELP!!!!!
[Re: kz5rt2]
#438855
08/15/09 03:15 PM
08/15/09 03:15 PM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Wow, the duration of that cam is essentially the same as a stock 440 cam. Not even a HP/6-pack cam, but a stock passenger car 440 cam. That is a very small cam if you've got 10.5 of compression you could do a lot more cam, even with those 3.23's.
Your cam is 212 @050 and I think they say the stock lo-po cam was 210 or so with almost as much lift as your cam. That cam is really a waste with a RPM intake, big-valve heads, 3" exhaust. I would be looking at something more like the lunati voodoo 60303 which is 226/234 @050 or the comp xe275hl 231/237. The comp I mentioned may be a bit much for those gears with a stock converter though.
In any event, there's probably more in your combo than you're getting. Did you dial in your ignition timing? Should be getting ~15* initial and 36-38 total, all in by 2500-3000rpm.
Then start trying to dial in the carb. FWIW the 1411 carb is the electric choke version of the infamous 1407, which definitely has its share of haters on this board, though some people claim to have good luck with them. If you bought the carb new I hope you at least went through it on the inside, they have a reputation for spotty assembely quality. Do you have a jet kit for the carb yet? If not I'd add that to the shopping list. Hard to tune for WOT without a good assortment of jets/metering rods.
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Re: HELP! 440 Wedge Can't keep up with a Saab 9-3 HELP!!!!!
[Re: DaytonaTurbo]
#438856
08/15/09 03:33 PM
08/15/09 03:33 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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How does it act when you floor it? What do the plugs look like? As said what(ign) timing specs? 10.5 advertized or measured CR. Any compression test #'s to post?
live every 24 hour block of time like it's your last day on earth
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Re: HELP! 440 Wedge Can't keep up with a Saab 9-3 HELP!!!!!
[Re: kz5rt2]
#438861
08/16/09 12:27 AM
08/16/09 12:27 AM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
So... If I were to put a new cam in, this would wake up? What do you think the HP increase would be?
Hard to predit exactly. Depends on the rest of the combo and your tuning abilities. Could easily be 30-50hp there waiting to be exploited.
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Re: HELP! 440 Wedge Can't keep up with a Saab 9-3 HELP!
[Re: kz5rt2]
#438863
08/16/09 12:39 AM
08/16/09 12:39 AM
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Joined: Jul 2006
Posts: 4,179 California
mickm
master
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master
Joined: Jul 2006
Posts: 4,179
California
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Quote:
I have an Eddy 1411 running 0.116 primary and .119 secondary. It seems to cruise fine, but won't get out of it's own way when you step into it!
i don't know this carb specifically, (although as someone else pointed out, it has been labeled with more than it's share of problems), but those jets seem ungodly rich to me.
i don't know of any eddy carb that has jets like that. my 650's came stock with .098 secondaries and .095 primaries. the last competition carter i worked on was running way rich with .110 secondaries (which we dropped to .101) and i think .098[5] primaries.
no doubt that cam is an issue, but i think you need to look at those jets!!!
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Re: HELP! 440 Wedge Can't keep up with a Saab 9-3 HELP!
[Re: kz5rt2]
#438866
08/16/09 11:44 AM
08/16/09 11:44 AM
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Joined: Jul 2006
Posts: 4,179 California
mickm
master
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master
Joined: Jul 2006
Posts: 4,179
California
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Quote:
If the jets were the problem and was indeed too rich, wouldn't I be seeing black smoke out the exhaust? Also, the fatter I was making this the better it was running.
you wouldn't necessarily see smoke. if you really want to check, drive behind it while someone jumps on it, and see what you see then.
this is what the 1411 lists as stock:
Metering Jets - Primary .113, Secondary .107
and you are at a .116 and .119. it's just hard for me to see that you would need to go that rich. usually ootb carbs, (even though they are calibrated for a specific engine, like a sbc), are set up to run rich to begin with. to have to go that many steps above ootb doesn't seem correct, but who knows? each situation is different.
that will be the most important thing from the dyno is the A/F ratio. also get them to run the engine at 2500 or 3000 in cruise for a minute or so, and get the A/F in cruise mode, so you have an idea of where to go there.
post back when you have the results!
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Re: HELP! 440 Wedge Can't keep up with a Saab 9-3 HELP!!!!!
[Re: kz5rt2]
#438867
08/16/09 07:25 PM
08/16/09 07:25 PM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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My compression/cam calculations show the cranking cylinder pressure should be about 180 PSI at sea-level? This may be too much for pump gas? With Iron heads I would guess the engine is sensitive to detonation? You may not hear pinging, and a rich mixture and retarded ignition timming may be covering up the problem. That is why I suggested trying the E-85 Fuel, it is 105 octane and runs cooler if detonation is the problem, it should run better. The E-85 needs a richer mixture, but The carb jetting sounds rich to me, so it may be OK with the E-85. Anyhow, trying this test is cheap and easy.
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