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#1
11-19-2008, 12:12 AM
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TUNING 1095 KING DEMON RS
Hope this works.here is a log from a little blast down the street.
And one of a cruise at 3000rpm down the highway. The carb was going lean up top at high rpm(14:1) and really rich during a cruise which is at 3000rpm(11.8-12.0) with my gears on the highway. It was stock out of box settings except i put a PV in front and dropped from 93 jet to 85. This log was with me changing from a .029 hsab to a .023hsab And going from a .070 to .076 intab. Also drilled a .180 hole through plug in center of base plate for some idle air instead of drilling throttle blades. Looks much better up top(low 13's),its not leaning out as much but can go a tad richer. The cruise is still rich at 12.0-12.2. Any suggestions on whats next to lean the cruise out more and slightly richen the wot?
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9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire  
Last edited by 79TA455STROKED; 11-19-2008 at 12:27 AM. |
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#2
11-19-2008, 12:41 AM
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Out of box settings on this carb #9728020dr
1095 removable sleeve king demon venturi=1.72 IAB=.046 INTAB=.070 H.S.AB=.029 BOOSTER=ANNULAR BOOSTER LEG=.169 SQUIRTERS=42 BUTTERFLY=2.00 PUMP CAM=YELLOW 643 SIPHON BREAK=.028 E-HOLE#1=.029 #2=.029 #3=.029 #4=.029 PVCR=.059 I.F.R=.029 INT PICK UP=.040 INT FEED RES=.046 MAINS=93-93 PV=PLUGGED LINKAGE=PROG N&S=.130 PUMPS=50CC Again,only changes so far are Add 2.5pv in front and drop to 85 jet Drill .180 hole in baseplate center plug for idle air Change from .029 HSAB to .023 Change from .070 intab to .076 Throttle blades set at .030 of trans slot showing back and front idle/air screws turned out 1 turn Idles at 1200rpm with 5-6" vacuum and cruises with 11-12" vacuum at steady 3000rpm. Need to lean cruise,would like 13'safr Need to slightly richen wot more,would like 12.8afr I have some ideas but wanted to see what some of you think. THANKS! 
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9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
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#3
11-19-2008, 03:09 PM
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I would change the squirters from 42 to 35, the on line calibration for this is not correct. If you have the book on tuning Demon carbs the listing in there says the 1095 takes a 35 squirter. I ran a 461 for a couple of years with that carb and it was too rich on launch when I went down on squirter size it started to 60 ft better.
I had to put a power valve in to make it more drivable and lower the primary jets 6 to 8 sizes. I also leaned out the idle feed restrictor because I have little to no effect on that circuit, my idle air screws are only an 1/8" out from closed. My carb is also way rich at wide open when I logged the air fuel, I believe it is at 11.3 to 11.8. These numbers were on my 535 with wide ports. All other settings are as it was delivered, I have leaned out the jets front and rear but have not tested it yet. Hope this helps some. David Kawallek |
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#4
11-19-2008, 04:47 PM
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My idle air screws were the same way,about 1/4 turn out but after i drilled the .180 hole in the center plug of baseplate to get some idle air in,i was able to move the screws to 1 turn out.I might go slightly bigger with the hole to get a little more idle rpm out of it and a little more on the idle/air screws without moving the throttle blades.
These carbs dont have the idle eze feature like the mighty demons and they have no holes drilled in the throttle blades so you need to get some idle air in there somehow.They put the plug in there were the idle eze would normally be so you can drill it for idle air. I also noticed that these carbs have Very tight throttle blades in the bores,so i cant see any of them working at idle without drilling the hole in the plug.
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9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
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#5
11-19-2008, 10:13 PM
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Idle feed restrictions are way too big. .038" should be more than large enough. .042 IFR is a lot more idle fuel. This will affect your off-idle and part throttle cruise richness. Rest of carb setting very similar to a factory Holley calibration.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#6
11-19-2008, 10:27 PM
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Tom
The ifr are only .029. Has .029 ifr with .046 air bleed. I think it is the inter circuit making me so rich at cruise. It had a .040 pickup with a .046 restrictor and .070 air bleed. I opened up the air bleed to .076 and it only made a small difference. Im gonna try and go to .080 next. If that dont lean it out,maybe the pickup or rest needs to be smaller? Dropping the hs air bleeds from .029 to .023 almost took care of my lean high rpm problem.Went from 14.0afr to 13.2. I think im gonna try and go up one jet size all around to get me in the upper 12's. From 85,93 to 86,94 Sound ok? Maybe adj pvcr so i can drop prim jets down for cruise or drilling and tapping for trans slot jet is in future. Ill take it a step at a time. Any suggestions?
__________________
9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
Last edited by 79TA455STROKED; 11-19-2008 at 11:00 PM. |
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#7
11-20-2008, 07:03 PM
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Sorry, Misread your Post. See the .029 IFR now.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#8
11-23-2008, 11:23 PM
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Well,i think im having a common problem i have been reading about with these three circuit dominators.
You cant jet them rich enough for WOT because of the restricted main well that is used to feed the third circuit. My afr does not seem to want to go any richer then 13.2-13.6 during a wot run. I have jetted up to the equal of 95 jets squared: 84 prim but pvcr opened to .067 95 sec The afr has not moved any richer at all since changing from 93 jets. It has a 84 prim jet because i was trying to lean the cruise out at the same time as going up in total jet area to make wot richer.Thats why i opened the pvcr,to compensate for the smaller prim jets. It was working as my cruise has gone from 11.8 to 12.8-13.0. I am now giving up for now on leaning the cruise untill i see if i can jet this thing rich enough for WOT. I think even going up to 99 jets will not move this thing any richer then 13.2-13.6afr. Converting this thin into a 2 circuit carb might be the only way to go. Here is a log from a third gear wot pull.
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9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
Last edited by 79TA455STROKED; 11-23-2008 at 11:42 PM. |
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#9
11-24-2008, 08:52 AM
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Quote:
Vast improvement. Mark.
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`70 Firebird,Original Owner car Ken French Built Chassis Carlquist Competition Engines IA2 505 Competition CNC Ported Super Chiefs CCE Ported Gustram Twin Dominators from Shaker 455 963 HP `09 Electra Glide Standard. `03 F-350 7.3 6-speed 4x4 Crew Cab Dually. |
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#10
11-24-2008, 07:17 PM
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how diff is it to convert to 2 circuits?
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#11
11-24-2008, 11:17 PM
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Quote:
You need a set of 2 circuit metering blocks.You need to set everything up in it to configure it as a 2 circuit. The int air bleed spot becomes the idle air bleed spot.The old idle air bleed spot is not used. Main thing is configuring the blocks rite,there is a recipeover on the innovate forums as a starter configuration.They also usually install transition jets in the main body at the same time. I just want to eliminate all other things before i do it.
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9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
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#12
11-24-2008, 11:20 PM
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Question for you guys.
I log my fuel pressure and it is staying at around 7psi at wot end of run when my carb leans out. Is it possible that i still have a fuel volume problem at wot end of run that is causing my carb to lean even though the pressure is not dropping? I only have a mallory 140 pump on here,just second thinking if its enough.
__________________
9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
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#13
11-28-2008, 11:16 AM
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I picked up a set of 2 circuit proform metering blocks the other day.I will be doing the 2 circuit conversion today.
I have a good starting point recipe,just need to drill and tap a few holes for t-jets,pvcr,etc.
__________________
9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
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#14
11-28-2008, 11:40 PM
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Well,BIG difference!
Cant believe how close it is with this starting reciepe for the 2 circuit blocks. WOT stays rite at 12.7-12.8 now up to 6600rpm where i brought it too. Cruises at 13.3-13.6. And drives much better and much cleaner(no surges or roughness). Im gonna do some further tweeking to get the idle better and see if how it runs if i lean the cruise a little more. Who says you cant drive a dominator(or king demon) on the street!  
__________________
9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
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#15
11-29-2008, 09:49 AM
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awesome, get it to ATCO!
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#16
11-29-2008, 10:11 AM
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Quote:
Looks like im gonna have to wait untill spring time. 
__________________
9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
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#17
11-29-2008, 01:16 PM
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Quote:
Thanks
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Jim 71 Firebird, best 1/8th mile time of 5.02 at 142 at altitude in Vegas |
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#18
11-29-2008, 01:29 PM
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Quote:
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#19
11-29-2008, 05:07 PM
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Quote:
I bought a set of proform metering blocks. I drilled and tapped the main body for t-jets,10-32 setscrews). Set it up as follows: 85-93 jets(prim&sec) .063 t-jets(prim & sec) .026 emulsion holes in #1&3 holes,#1 being top hole. #2&4 emulsion holes plugged opened angle channels up to .161(top of main well that feed boosters) .028 kill bleeds .039 ifr's(relocated ifr to bottom of block,left top hole open)(drilled and tapped for 6-32) .089 primary pvcr(drilled and tapped holes for 10-32 setscrews for adjustability) 3.5 prim p.v no p.v in rear(plugged) .025 high speed air bleeds(prim&sec) .076 idle air bleeds(prim&sec) I installed the idle-eze feature in baseplate and drilled hole for air filter stud through for a screwdriver to fit through. Blades are set .020 open prim and sec. Air/fuel adj screws are 1 turn out. Like i said,i still have to tweak a little more for idle and i want to try and lean cruise out some more but it is very close the way it is. I will tell you what i end up with after i do some tweaking.
__________________
9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
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#20
11-29-2008, 05:22 PM
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Basically what I have done to 3 circuit Holley Dominators for years.
Shaker455 has followed my advice and added a few tweaks like a Idle Air circuit based on his design. Holley had idle air on its modular Holley carbs (years before BG was around) on Truck calibrations. Great Job, keep us informed. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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