DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    18* Heads on a 632 with a Terminator
Page 1 2 
Go
New
Find
Notify
Tools
Reply
  
18* Heads on a 632 with a Terminator
 Login/Join
 
DRR Pro
Picture of 00 DEAD ON
posted
What type of tune up are you using
Mine
632 Alum block 18* Big Chief Heads, terminator with #1 pump, 39 nozzles, 110 return pill. Goes high 4.40’s in good air but slows to high 50’s in the heat.
08 American Dragster 1980 lbs race ready on the starting line.
Any others find it different to tune a 18* motor over a conventional headed motor??????
Any suggestions will be appreciated
On gas carb I have been 4.45 @ 155 and 7.10 @ 190 in the 1/4 mile. Only run 1/8th tho
Thx in advance


Brian Mollison
2009 RaceTech Dragster
2020 Sumerduck Dragway VA Top ET Champion
2017 Sumerduck Top ET & SSS Track Champion
2017 MAC Top ET Track Champion
2009 Sumerduck Dragway Va Top ET & IHRA SSS Track Champion
2008 IHRA Division 1 Top ET Bracket Final Runner-up
2007 Colonial Beach Dragway Top ET Track Champion
 
Posts: 1026 | Location: Stafford, Virginia | Registered: October 03, 2006Reply With QuoteReport This Post
DRR Trophy
Picture of JP Miller
posted Hide Post
I don't have a 632 but I can tell you when I built the 582 and went with the 18* heads. I sized the pump up to a 1 and used 39 nozzle jets. The main stayed around the same as my conventional headed 555. Pill was in the mid to upper 80's range in the heat. Mind you I only had six passes on this deal before I wrecked but that was my starting point tune up wise. What kind of timing and egt you running?

This message has been edited. Last edited by: JP Miller,
 
Posts: 28 | Location: Virginia | Registered: October 24, 2011Reply With QuoteReport This Post
DRR Trophy
Picture of strictlybiz
posted Hide Post
I have a 572 conventional head BBC with a toilet and I have a 80a pump 40 nozzles with a 80 pill. Your way to lean that's why its slowing up. Keep putting fuel to you slow down. Put a 90 pill in it and reset barrel valve for that pill
 
Posts: 12 | Location: deer park | Registered: March 14, 2011Reply With QuoteReport This Post
DRR Pro
Picture of 00 DEAD ON
posted Hide Post
Conventional heads are tuned different. I tune a 632 head hunter motor and it runs low 4.40’s in a dragster.


Brian Mollison
2009 RaceTech Dragster
2020 Sumerduck Dragway VA Top ET Champion
2017 Sumerduck Top ET & SSS Track Champion
2017 MAC Top ET Track Champion
2009 Sumerduck Dragway Va Top ET & IHRA SSS Track Champion
2008 IHRA Division 1 Top ET Bracket Final Runner-up
2007 Colonial Beach Dragway Top ET Track Champion
 
Posts: 1026 | Location: Stafford, Virginia | Registered: October 03, 2006Reply With QuoteReport This Post
DRR Trophy
Picture of 1army
posted Hide Post
quote:
Originally posted by 00 DEAD ON:
Conventional heads are tuned different. I tune a 632 head hunter motor and it runs low 4.40’s in a dragster.


So Brian, what was your tune up with the conventional motor pump/timing/pill/injection system/ thnx
 
Posts: 39 | Location: Belton,Texas | Registered: October 13, 2005Reply With QuoteReport This Post
DRR Pro
Picture of 00 DEAD ON
posted Hide Post
Terminator #1 pump 38 nozzles 100 return pill. 32* of timing. Shift @ 7400 stalls 6800 fallsback to 6900 after shift


Brian Mollison
2009 RaceTech Dragster
2020 Sumerduck Dragway VA Top ET Champion
2017 Sumerduck Top ET & SSS Track Champion
2017 MAC Top ET Track Champion
2009 Sumerduck Dragway Va Top ET & IHRA SSS Track Champion
2008 IHRA Division 1 Top ET Bracket Final Runner-up
2007 Colonial Beach Dragway Top ET Track Champion
 
Posts: 1026 | Location: Stafford, Virginia | Registered: October 03, 2006Reply With QuoteReport This Post
DRR Trophy
Picture of 1army
posted Hide Post
quote:
Originally posted by 00 DEAD ON:
Terminator #1 pump 38 nozzles 100 return pill. 32* of timing. Shift @ 7400 stalls 6800 fallsback to 6900 after shift
Ok I have a 1/2 pump 37 nozzles 78 pill same timing shift @ 7200 stall about 6400 not sure of fall back just haven't gotten this engine maximized.
 
Posts: 39 | Location: Belton,Texas | Registered: October 13, 2005Reply With QuoteReport This Post



DRR Trophy
posted Hide Post
Take the engine and fuel system to Pat Donavan's dyno. It will be the best $600 you have spent.
 
Posts: 142 | Location: Ashland,Va | Registered: March 29, 2003Reply With QuoteReport This Post
DRR Top Comp
Picture of wideopen231
posted Hide Post
Go to FIE(Fuel Injection Enterprise) web site he has a tune up calculator.You enter few numbers and it gives real good idea of where you should be on jet. You can change nozzle sizes and see what pressure you will have(well close) and what jet change needed to get you same fuel to motor. You could do all the math,but web site deal is lot easier. http://www.fuelinjectionent.com/




America home of free. Brought to you by 2nd amendment.
 
Posts: 4168 | Location: Greensboro NC | Registered: May 24, 2011Reply With QuoteReport This Post
DRR Top Comp
Picture of Curly1
posted Hide Post
quote:
Originally posted by Brandon Davis:
Take the engine and fuel system to Pat Donavan's dyno. It will be the best $600 you have spent.


I agree with this but two things I would add.
1. Probably will not cost anywhere near that much to dyno.
2. Make sure you go to someone who knows how to work with and tune mechanical injection and is set up for it.

With mechanical injection you have the ability to to tune each cylinder different. But you need to know what each cylinder is doing. There is probably 8 engine dyno close to my house. I go three hours each way to dyno my motors because my guy specializes in mechanical injection. He knows what to look for and can get the tune up right in just a few pulls.


https://postimg.cc/gallery/np3zpruo/
"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.

Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.

4X NE2 CHAMPION. 2020 TDRA NE2 Champion
 
Posts: 3968 | Location: United States of Texas | Registered: April 02, 2011Reply With QuoteReport This Post
DRR Trophy
posted Hide Post
This is the reason I specifically called out Pat Donavan's dyno, just happens to be close to him as well.
 
Posts: 142 | Location: Ashland,Va | Registered: March 29, 2003Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
quote:
Originally posted by 00 DEAD ON:
Terminator #1 pump 38 nozzles 100 return pill. 32* of timing. Shift @ 7400 stalls 6800 fallsback to 6900 after shift


what does your car weigh with you in it?
 
Posts: 785 | Location: Georgia | Registered: May 09, 2008Reply With QuoteReport This Post
DRR S/Pro
posted Hide Post
There is no reason to need to bring this type of motor to a so call MFI specialist. If the dyno operator doesn't know how to tune one of these then they can't do carbs either.

MFI is the simplest system out there.

And BTW most think these deals have a dry intake (No fuel), far from that! So tuning the motor by changing nozzles on a static dyno is not the same as what goes on racing on a track in the dynamic world.
 
Posts: 2139 | Location: Tewksbury, MA,USA | Registered: November 03, 2000Reply With QuoteReport This Post
DRR Pro
posted Hide Post
When I ran my Duke stuff on my 588 injected we were 40/78ish +or- a few I think you are quite lean.


--------------------
Bob Payton
S/P, T/D, S/C, TOP
309Z, 393, 3093, 8X93


www.apdracing.com
www.diamondracecars.com
www.callies.com
 
Posts: 1987 | Location: Michigan | Registered: November 14, 2001Reply With QuoteReport This Post



DRR Pro
Picture of 00 DEAD ON
posted Hide Post
quote:
Originally posted by Bob Payton:
When I ran my Duke stuff on my 588 injected we were 40/78ish +or- a few I think you are quite lean.


Bob Was that with a #1 pump?????


Brian Mollison
2009 RaceTech Dragster
2020 Sumerduck Dragway VA Top ET Champion
2017 Sumerduck Top ET & SSS Track Champion
2017 MAC Top ET Track Champion
2009 Sumerduck Dragway Va Top ET & IHRA SSS Track Champion
2008 IHRA Division 1 Top ET Bracket Final Runner-up
2007 Colonial Beach Dragway Top ET Track Champion
 
Posts: 1026 | Location: Stafford, Virginia | Registered: October 03, 2006Reply With QuoteReport This Post
DRR Pro
posted Hide Post
That was a twin gear rons pump. Do you guys have an 02 on that thing?


--------------------
Bob Payton
S/P, T/D, S/C, TOP
309Z, 393, 3093, 8X93


www.apdracing.com
www.diamondracecars.com
www.callies.com
 
Posts: 1987 | Location: Michigan | Registered: November 14, 2001Reply With QuoteReport This Post
DRR Pro
Picture of 00 DEAD ON
posted Hide Post
No we do not Bob. I bet that Twin Gear pump was a 0 1/2 pump. I have tried smaller pills but then it’s way to fat.


Brian Mollison
2009 RaceTech Dragster
2020 Sumerduck Dragway VA Top ET Champion
2017 Sumerduck Top ET & SSS Track Champion
2017 MAC Top ET Track Champion
2009 Sumerduck Dragway Va Top ET & IHRA SSS Track Champion
2008 IHRA Division 1 Top ET Bracket Final Runner-up
2007 Colonial Beach Dragway Top ET Track Champion
 
Posts: 1026 | Location: Stafford, Virginia | Registered: October 03, 2006Reply With QuoteReport This Post
DRR Trophy
posted Hide Post
Call James Monroe he can tell you where you need to be with it
 
Posts: 81 | Location: nc | Registered: February 20, 2014Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
# 1 Black pump 39 noz 86 pill Gray Barrel valve seems to work good on my 565 con head motor
 
Posts: 100 | Location: Newton n.j. | Registered: November 01, 2002Reply With QuoteReport This Post
DRR Trophy
posted Hide Post
Not the fastest but an 18 degree engine on a enderel single “toilet”; so here is my “story”.

2004 race tech dragster at 1975 pounds after a run on Norwalk scales. Dart iron block, dart 18 degree heads, 14:1 compression, Q16 pistons, dart manifold (all out of the box with no porting), 5” toilet, 0.5 pump, 34 nozzles, 100 main pill, no high speed leanout., torque converter brake stalls at 6000, shift at 7200 fall back is right around 6200.

Average day performance is 7.60’s and 4.67 in the eight. ¼ mile trap speed is 179; 144 at the 1/8th

bob
 
Posts: 37 | Location: Pittsburgh, pa | Registered: October 10, 2017Reply With QuoteReport This Post
  Powered by Social Strata Page 1 2  
 

DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    18* Heads on a 632 with a Terminator

© DragRaceResults.com 2024