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Re: Nitrous
[Re: an8sec70cuda]
#2033601
03/18/16 06:26 AM
03/18/16 06:26 AM
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Joined: Jan 2009
Posts: 1,044
Victoria, Australia
Ian
super stock
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super stock
Joined: Jan 2009
Posts: 1,044
Victoria, Australia
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Ran the car last night w/ the exact same setup as last time, except for the bigger -6 feed line from the bottle to the solenoid.
The weather was worse last night, yet the car still ran 1 mph faster. ET was almost the same as before. Back in September in better air it ran 8.95 at 149.7 mph. Last night it went 8.96 at 150.6 mph. Much warmer and humid last night...not sure what the DA was.
So maybe the bigger feed line leaned it out a little and gained me some MPH.
It got quicker when I brought the nitrous in faster.
For my last pass I took another degree of timing out and lowered the fuel pressure by about 1/4 lb., but the track went away. good work mate ,good to see her going quicker
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Re: Moparts official power adder thread
[Re: TRENDZ]
#2034380
03/19/16 11:36 AM
03/19/16 11:36 AM
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Joined: Dec 2003
Posts: 22,696
Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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What are the factors involved when deciding intake inlet size from say intercooler to throttle body? In this case, /6, 300hp? EFI, turbo, 4spd, 2500lb, autox/road race track car. Seems like its a restriction vs throttle response consideration, or 2.5" vs 3" tubing.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Moparts official power adder thread
[Re: tboomer]
#2034477
03/19/16 02:09 PM
03/19/16 02:09 PM
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Joined: Jan 2005
Posts: 2,540
Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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I personally would suggest to go with larger tubing. Larger tubing does take a bit longer to fill, but pre-boost throttle response actually gets better.
A good example would be with the old Buick Grand Nationals. You could get a kit that had a larger tube that went from the intercooler to the throttle body, and an over sized weld on elbow for the turbo side of the intercooler. It made a great improvement in the pre-boost power. Any extra time it may have taken to fill the tubing/ intercooler was more than made up for in throttle response pre-boost.
"use it 'till it breaks, replace as needed"
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Re: Moparts official power adder thread
[Re: tboomer]
#2035783
03/21/16 03:30 PM
03/21/16 03:30 PM
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Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
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Monte...the more plenum volume the better w/ nitrous? Cast single 4500 manifold in question.
I experimented w/ an Indy 426-4 manifold in the past on my hemi. It's a good bit larger in both the plenum and runners than my Barton manifold. It hurt the lowend grunt significantly naturally aspirated, but I'm thinking it may be the way to go w/ nitrous?
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: Moparts official power adder thread
[Re: tboomer]
#2036319
03/22/16 10:46 AM
03/22/16 10:46 AM
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Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
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I just got a set of -4/-3 lines and wow, they have a lot bigger ID than the straight -3 lines do! Surprised to see that as the only difference you can see on the outside is that the fitting on one end is the bigger -4 size.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: Moparts official power adder thread
[Re: an8sec70cuda]
#2036716
03/22/16 08:22 PM
03/22/16 08:22 PM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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NOS
Monte
Where is the perfect spot to install O2 bung in merge collector?
What is the best retard delay for annular fogger?
Same question for plate?
Back together with Charlie's chamber softening and valve job. Only took a couple cc's out of chamber. Nothing else. 48 cc P7. Large step header sound great. Hopefully really gonna free some power on top end.
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: Moparts official power adder thread
[Re: TRENDZ]
#2037204
03/23/16 03:34 PM
03/23/16 03:34 PM
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Joined: Nov 2006
Posts: 2,255
IL
furious70
top fuel
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top fuel
Joined: Nov 2006
Posts: 2,255
IL
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I personally would suggest to go with larger tubing. Larger tubing does take a bit longer to fill, but pre-boost throttle response actually gets better.
A good example would be with the old Buick Grand Nationals. You could get a kit that had a larger tube that went from the intercooler to the throttle body, and an over sized weld on elbow for the turbo side of the intercooler. It made a great improvement in the pre-boost power. Any extra time it may have taken to fill the tubing/ intercooler was more than made up for in throttle response pre-boost. What's the 'how' behind this, interested to know. Wasn't the conventional wisdom in Corky's book to use the smallest tubing that wouldn't result in Mach 1 speeds in the intake tract?
70 Sport Fury
68 Charger
69 Coronet
72 RR
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Re: Moparts official power adder thread
[Re: furious70]
#2037212
03/23/16 03:47 PM
03/23/16 03:47 PM
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Joined: Feb 2003
Posts: 1,942
Metro Detroit
OUTLAWD
top fuel
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top fuel
Joined: Feb 2003
Posts: 1,942
Metro Detroit
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I personally would suggest to go with larger tubing. Larger tubing does take a bit longer to fill, but pre-boost throttle response actually gets better.
A good example would be with the old Buick Grand Nationals. You could get a kit that had a larger tube that went from the intercooler to the throttle body, and an over sized weld on elbow for the turbo side of the intercooler. It made a great improvement in the pre-boost power. Any extra time it may have taken to fill the tubing/ intercooler was more than made up for in throttle response pre-boost. What's the 'how' behind this, interested to know. Wasn't the conventional wisdom in Corky's book to use the smallest tubing that wouldn't result in Mach 1 speeds in the intake tract? Picture a part throttle condition, MAP is below baro, but between compressor and throttle is more or less close to baro, minus any inlet restriction dP. When you go to WOT, the larger volume will take longer to deplete before the pressure drops, whereas the smaller volume will deplete quickly. By the time this volume is depleted, the turbo should be spooled.
Faster, Faster until the thrill of speed overcomes the fear of death...
71 Swinger - slowly collecting dust/parts
66 Belv. II - just a streetcar
88 Mustang - turbo LS beater
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Re: Moparts official power adder thread
[Re: tboomer]
#2037224
03/23/16 03:56 PM
03/23/16 03:56 PM
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Joined: Feb 2003
Posts: 1,942
Metro Detroit
OUTLAWD
top fuel
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top fuel
Joined: Feb 2003
Posts: 1,942
Metro Detroit
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N2O Question:
If I cannot get my new EFI setup to compensate for a dry shot, should I be able to use my existing fuel solenoid (E-brock RPM solenoid, unknown orifice) with 60psi fuel rail pressure from the EFI system?
Pumps should be more than enough to handle it.
Faster, Faster until the thrill of speed overcomes the fear of death...
71 Swinger - slowly collecting dust/parts
66 Belv. II - just a streetcar
88 Mustang - turbo LS beater
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Re: Moparts official power adder thread
[Re: OUTLAWD]
#2037313
03/23/16 06:23 PM
03/23/16 06:23 PM
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Joined: Dec 2003
Posts: 22,696
Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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I personally would suggest to go with larger tubing. Larger tubing does take a bit longer to fill, but pre-boost throttle response actually gets better.
A good example would be with the old Buick Grand Nationals. You could get a kit that had a larger tube that went from the intercooler to the throttle body, and an over sized weld on elbow for the turbo side of the intercooler. It made a great improvement in the pre-boost power. Any extra time it may have taken to fill the tubing/ intercooler was more than made up for in throttle response pre-boost. What's the 'how' behind this, interested to know. Wasn't the conventional wisdom in Corky's book to use the smallest tubing that wouldn't result in Mach 1 speeds in the intake tract? Picture a part throttle condition, MAP is below baro, but between compressor and throttle is more or less close to baro, minus any inlet restriction dP. When you go to WOT, the larger volume will take longer to deplete before the pressure drops, whereas the smaller volume will deplete quickly. By the time this volume is depleted, the turbo should be spooled. Of course with that logic, every car/motor combination would have its own "sweet Spot", based on many things, including driving style, track layout, ratios, etc, if I understand the principle proposed, which on face value, makes sense.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Moparts official power adder thread
[Re: jcc]
#2037386
03/23/16 08:36 PM
03/23/16 08:36 PM
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Joined: Jan 2005
Posts: 2,540
Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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I personally would suggest to go with larger tubing. Larger tubing does take a bit longer to fill, but pre-boost throttle response actually gets better.
A good example would be with the old Buick Grand Nationals. You could get a kit that had a larger tube that went from the intercooler to the throttle body, and an over sized weld on elbow for the turbo side of the intercooler. It made a great improvement in the pre-boost power. Any extra time it may have taken to fill the tubing/ intercooler was more than made up for in throttle response pre-boost. What's the 'how' behind this, interested to know. Wasn't the conventional wisdom in Corky's book to use the smallest tubing that wouldn't result in Mach 1 speeds in the intake tract? Picture a part throttle condition, MAP is below baro, but between compressor and throttle is more or less close to baro, minus any inlet restriction dP. When you go to WOT, the larger volume will take longer to deplete before the pressure drops, whereas the smaller volume will deplete quickly. By the time this volume is depleted, the turbo should be spooled. Of course with that logic, every car/motor combination would have its own "sweet Spot", based on many things, including driving style, track layout, ratios, etc, if I understand the principle proposed, which on face value, makes sense. Think of it in extremes. No turbo in this little experiment. Lets say you put a 6 inch square box on your engine before the throttle plates. It has a dime sized hole in it. Whack the throttle open. The engine consumes the air very quickly and is very down on power. Now, put a 6 foot square box on it. Same dime sized hole. The engine will make much more power, for a longer time, before the air is depleted. Like I said extreme, but it sort of illustrates the point.
"use it 'till it breaks, replace as needed"
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Re: Moparts official power adder thread
[Re: TRENDZ]
#2037498
03/23/16 11:27 PM
03/23/16 11:27 PM
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Joined: Dec 2003
Posts: 22,696
Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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Your example is valid and I agree, but to fill the larger box at first or after once depleted, takes a longer time, the larger the box, hence my "sweet spot" comment, correct?
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Moparts official power adder thread
[Re: tboomer]
#2040715
03/28/16 09:47 PM
03/28/16 09:47 PM
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Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50
pro stock
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pro stock
Joined: Oct 2009
Posts: 1,267
North, Alabama
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Nice looking pistons and rods. About what will the compression be with those?
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
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Re: Moparts official power adder thread
[Re: D-50]
#2040720
03/28/16 09:58 PM
03/28/16 09:58 PM
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Joined: Feb 2005
Posts: 20,178
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,178
PA.
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Nice looking pistons and rods. About what will the compression be with those? I really don't know yet. I have a new set of B1 heads that I started porting but haven't finished yet with really small chambers. I will have those finished hopefully to go on this build next year. The set going on this years engine stall around 420cfm and will go higher with some more time but I want to get this engine together. Like I said earlier the pistons I have for this year will only take a recommended 250 hit MAX. Time to get my feet wet. 
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: Moparts official power adder thread
[Re: tboomer]
#2040723
03/28/16 10:04 PM
03/28/16 10:04 PM
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Joined: Nov 2004
Posts: 6,890
North Alabama
Monte_Smith
master
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master
Joined: Nov 2004
Posts: 6,890
North Alabama
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You need to look at the pictures of Wade's heads that Charlie Buck did. You don't soften up those B-1 chambers it will be VERY timing sensitive. Also the right camshaft is a MUST. Nearly impossible to get the numbers you NEED on a standard BBM core. Needs to be 55mm
Last edited by Monte_Smith; 03/28/16 10:06 PM.
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Re: Moparts official power adder thread
[Re: Monte_Smith]
#2040747
03/28/16 10:26 PM
03/28/16 10:26 PM
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Joined: Feb 2005
Posts: 20,178
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,178
PA.
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You need to look at the pictures of Wade's heads that Charlie Buck did. You don't soften up those B-1 chambers it will be VERY timing sensitive. Also the right camshaft is a MUST. Nearly impossible to get the numbers you NEED on a standard BBM core. Needs to be 55mm I'll have to try to find that post Monte but being retired on a limited budget and now 60 years old its go time. A good Friend Tom Hemphile speced a cam for me for this year so like I said I will get my feet wet. We have a small heads-up series at Quaker City called Dads Outlaw Street that my car will fit in and its mostly local low-dollar guys out for fun. Looking forward to a new challenge but my bracket car comes first. I love to race 1-2 times a week.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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