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Re: rons toilets vs bugcatcher
[Re: 440Jim]
#898276
01/09/11 01:10 PM
01/09/11 01:10 PM
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Joined: May 2006
Posts: 1,073
oregon
greendart408
OP
super stock
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OP
super stock
Joined: May 2006
Posts: 1,073
oregon
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Quote:
Quote:
Motor size is 408cu. I have a 0.5 gear pump my flow chart is at work. 33nozzles. And my pill size vary with the weather and altitude as do my high speed pressures with my pill changes. I run it around 80 to 85 psi normally. I run normally at my home track a 86 pill.
There is more than one tune-up to give the same fuel flow. High pressure with small nozzles, and lower pressure with larger nozzles. The reason I think the 33 nozzles might be fine is because that is what I ran with methanol (26 with E85). CID, rpm, and vol. eff need to be considered, but for comparison mine is a 511 CID, 5500-7000 rpm, 0-1/2 vane pump, 4.1" toilet, 98 pill. My high speed bypass is set to crack at 77psi, so it likely goes higher but I don't have a pressure measurement going down the track. I set it with A/F from a wideband
recorded data and time slip data.
Jim, this is what Spud Miller from fuel injection enterprises set me up with..Had him flow everything before I started so my setup would be close. I have tuned it from his initial setup, but his tuneups have been very close. He likes to run the smaller nozzles at a higher pressure so it has good atomization sp.? I have never tried any bigger nozzles yet...
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Re: rons toilets vs bugcatcher
[Re: greendart408]
#898277
01/09/11 07:12 PM
01/09/11 07:12 PM
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Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
MRMOPAR622
top fuel
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top fuel
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
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I don't know about the small bock Mopars but the big block Mopars like more fuel than the brand xxxx engines.James Monroe says I am putting to much fuel in my engine,but it would not run with 38 nozzels. With the 39 nozzels I think it may be on the lean side,I have some 40 nozzels I am going to try next. If it ever warms up. We are under a Ice Warning for tonight & tomorrow.  It should have been warm enought the last couple of weeks to go to the track.
"To Be The Man'You Have Got To Beat The Man"
"T/D and Pro-Bracket Racer"
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Re: rons toilets vs bugcatcher
[Re: MRMOPAR622]
#898278
01/09/11 09:06 PM
01/09/11 09:06 PM
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Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
MRMOPAR622
top fuel
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top fuel
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
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I belive it is important to get plenty of air to the terminators,toilets or even carbs.. So I built a box to raise my scoop not only up over the roll cage for clean air but also to give it a larger volume of air.
Last edited by MRMOPAR570; 01/09/11 09:08 PM.
"To Be The Man'You Have Got To Beat The Man"
"T/D and Pro-Bracket Racer"
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Re: rons toilets vs bugcatcher
[Re: MRMOPAR622]
#898279
01/09/11 09:15 PM
01/09/11 09:15 PM
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Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
MRMOPAR622
top fuel
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top fuel
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
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I have found small peebles in my scoop(RE dragster)before so I made these out of some metal speaker covers. Does anyone think these might restrict my air flow?
Last edited by MRMOPAR570; 01/09/11 09:16 PM.
"To Be The Man'You Have Got To Beat The Man"
"T/D and Pro-Bracket Racer"
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