View Poll Results: Will polishing the inside of an intake manifold improve performance?
Yes, it will improve performance
0
0%
No, it won’t do anything at all
3
100.00%
No, it will reduce performance
0
0%
Voters: 3. You may not vote on this poll
D17VTECPOWER threads consolidated - how a member should not behave
#1741
Dr Krieger of Modification
Re: Will shaving my head make more power?
You could try the pistons from the D17A7 natural gas engine, with wiesco rods.
The compression is 12.5:1. part number
or possibly get them machined to 11.1:1.
........
of course with any High compression setup you'll need the supporting mods and I can't tell you if this will last long term.
The compression is 12.5:1. part number
or possibly get them machined to 11.1:1.
........
of course with any High compression setup you'll need the supporting mods and I can't tell you if this will last long term.
#1742
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Will shaving my head make more power?
If D17 successfully achieved all the power gains to a D17 he has contemplated about wtihin the last year he'd be able to get groceries slightly faster.
#1744
Registered!!
Re: Will shaving my head make more power?
#1745
PITA Admin
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Swimmers shave their legs to go faster. Ah, wait, no convertible civics.
#1746
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Rep Power: 97 Re: Will shaving my head make more power?
D16 pistons need to be modified to accept the D17 rod...i think the D17 piston rod end is wider.
or you can possibly use the d16 piston and rod combo but then the rod ends will need to be modified...i do believe the d16 crank rod end is thicker than the d17...
or just slap a turbo on it!
or you can possibly use the d16 piston and rod combo but then the rod ends will need to be modified...i do believe the d16 crank rod end is thicker than the d17...
or just slap a turbo on it!
#1748
Does a car's chassis get weaker over time?
I know that this question depends on many factors. But generally, presuming that there isn't any rust or collision damage, does the car's chassis itself "wear out"? Basically, I am asking if the chassis becomes weaker or less rigid over time. Thanks!
#1749
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Does a car's chassis get weaker over time?
According to this the answer is yes: https://www.reddit.com/r/askscience/...ker_over_time/
Here's more reads if interested: https://www.google.com/search?num=50....0.1fnvcWm_FLY
To easliy sum up the answer in two words it is at the time mark 0:37 seconds in the video below:
It's Science!
Here's more reads if interested: https://www.google.com/search?num=50....0.1fnvcWm_FLY
To easliy sum up the answer in two words it is at the time mark 0:37 seconds in the video below:
It's Science!
#1750
Re: Does a car's chassis get weaker over time?
According to this the answer is yes: https://www.reddit.com/r/askscience/...ker_over_time/
Here's more reads if interested: https://www.google.com/search?num=50....0.1fnvcWm_FLY
To easliy sum up the answer in two words it is at the time mark 0:37 seconds in the video below:
https://www.youtube.com/watch?v=OSJCg93ZN_Y
It's Science!
Here's more reads if interested: https://www.google.com/search?num=50....0.1fnvcWm_FLY
To easliy sum up the answer in two words it is at the time mark 0:37 seconds in the video below:
https://www.youtube.com/watch?v=OSJCg93ZN_Y
It's Science!
#1751
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Does a car's chassis get weaker over time?
Sounds reasonable. I don't feel like researching through metallurgy info to find an answer. Not really something I ponder..I'm more of maintenance per service manual and fix something when it breaks type of person. Honestly, being in my 50's and the past few years (several repairs) the less work I have to do on my car the more content I am. However, I'm glad and appreciative of this site, it's members and others like it as a resource if repairs need to be done.
#1752
Re: Does a car's chassis get weaker over time?
Sounds reasonable. I don't feel like researching through metallurgy info to find an answer. Not really something I ponder..I'm more of maintenance per service manual and fix something when it breaks type of person. Honestly, being in my 50's and the past few years (several repairs) the less work I have to do on my car the more content I am. However, I'm glad and appreciative of this site, it's members and others like it as a resource if repairs need to be done.
#1753
PITA Admin
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#1754
Re: Mods for better AC performance
The 18 year old ac system in my car isn’t exactly up to snuff either. I started reading about Duracool last night. Seems interesting. Is it really more efficient than r134? Why isn’t it everywhere?
I’ll be tinting my windows this spring for sure, and probably doing some more troubleshooting with the temp probe to see if I can get the evaporator core any colder.
I’ll be tinting my windows this spring for sure, and probably doing some more troubleshooting with the temp probe to see if I can get the evaporator core any colder.
1. The AC gets cold much quicker after it is first turned on.
2. The AC blows colder at idle. 5 degrees colder to be exact.
3. The compressor doesn't cause as much drag on the engine as it is running, and it runs for less time before cycling off.
4. The compressor's discharge temp is way lower. With R134A., the refrigerant line coming out of the condenser was hot enough that it would be uncomfortable to hold on to, but with Enviro-safe refrigerant, it's warm, but not burning hot. This will help the compressor live longer, as well as the rest of the system.
However, be aware that this is a flammable refrigerant, so I can't recommend that anyone tries this unless they are okay with their AC system being full of flammable gas.
#1755
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Mods for better AC performance
Hmmm..let's weigh this out: 5 degrees cooler versus possible harm or death?
Hell, I'll take swamp nuts over death any day...lol
#1756
The legs in the public bathroom stall
Re: Mods for better AC performance
Lets see.
First we will start with your new refrigerant is NOT approved for use on highways in the US.
Second lets hope you don't get into any wrecks that cause leakage because YOU will liable to damages caused to people by your own negligence. This might involve occupants of your car or other cars. It might involve first responders including paramedics, police, or firefighters.
The system was designed to work a certain way with a certain chemical. In the past you have shown a complete willingness to assume you know better than engineering teams when in fact you don't. Was your system working at peak design efficiency? I bet it wasn't.
Presumptions and assumptions. You compare before and after cooling times. Did you measure starting temp in the interior? Did you record the starting vent temp? Solar load? Heat load in the ducting? Did you record the ambient humidity? Did you check operating pressure before and after? These all affect cool times.
The compressor causes less drag on the engine? Explain how. The compressor runs less time before cycling. How much refrigerant did you recover? Was it properly full of proper R134a or was it already low or filled with an unknown blend of mystery gases. Counterfeit/bad R134a is a serious problem in this country. It doesn't perform as it should and is cheaply available in bulk.
Did the system just have a small leak and needed the system brought back to a full charge? If so you have made it infinitely worse because now you have a small leak with different operating pressure characteristics and flammability to boot.
Here is another goodie to think about. Any shop that is smart will have a refrigerant identifier to help protect their expensive AC equipment. As soon as they test your car they will let you know that they are not going to work on your AC system. They don't want that crap inside their machine, hoses, or tank. You have successfully rendered your car a DIY car forever. On the bright and sunny side of things you likely still get the AC service by shops of less repute that don't invest in proper equipment.
Of course what do I know I am just a forum poster. Time to sign off and polish my Honda master tech wall plaque.
First we will start with your new refrigerant is NOT approved for use on highways in the US.
Second lets hope you don't get into any wrecks that cause leakage because YOU will liable to damages caused to people by your own negligence. This might involve occupants of your car or other cars. It might involve first responders including paramedics, police, or firefighters.
The system was designed to work a certain way with a certain chemical. In the past you have shown a complete willingness to assume you know better than engineering teams when in fact you don't. Was your system working at peak design efficiency? I bet it wasn't.
Presumptions and assumptions. You compare before and after cooling times. Did you measure starting temp in the interior? Did you record the starting vent temp? Solar load? Heat load in the ducting? Did you record the ambient humidity? Did you check operating pressure before and after? These all affect cool times.
The compressor causes less drag on the engine? Explain how. The compressor runs less time before cycling. How much refrigerant did you recover? Was it properly full of proper R134a or was it already low or filled with an unknown blend of mystery gases. Counterfeit/bad R134a is a serious problem in this country. It doesn't perform as it should and is cheaply available in bulk.
Did the system just have a small leak and needed the system brought back to a full charge? If so you have made it infinitely worse because now you have a small leak with different operating pressure characteristics and flammability to boot.
Here is another goodie to think about. Any shop that is smart will have a refrigerant identifier to help protect their expensive AC equipment. As soon as they test your car they will let you know that they are not going to work on your AC system. They don't want that crap inside their machine, hoses, or tank. You have successfully rendered your car a DIY car forever. On the bright and sunny side of things you likely still get the AC service by shops of less repute that don't invest in proper equipment.
Of course what do I know I am just a forum poster. Time to sign off and polish my Honda master tech wall plaque.
#1758
Re: Mods for better AC performance
Lets see.
First we will start with your new refrigerant is NOT approved for use on highways in the US.
Second lets hope you don't get into any wrecks that cause leakage because YOU will liable to damages caused to people by your own negligence. This might involve occupants of your car or other cars. It might involve first responders including paramedics, police, or firefighters.
The system was designed to work a certain way with a certain chemical. In the past you have shown a complete willingness to assume you know better than engineering teams when in fact you don't. Was your system working at peak design efficiency? I bet it wasn't.
Presumptions and assumptions. You compare before and after cooling times. Did you measure starting temp in the interior? Did you record the starting vent temp? Solar load? Heat load in the ducting? Did you record the ambient humidity? Did you check operating pressure before and after? These all affect cool times.
The compressor causes less drag on the engine? Explain how. The compressor runs less time before cycling. How much refrigerant did you recover? Was it properly full of proper R134a or was it already low or filled with an unknown blend of mystery gases. Counterfeit/bad R134a is a serious problem in this country. It doesn't perform as it should and is cheaply available in bulk.
Did the system just have a small leak and needed the system brought back to a full charge? If so you have made it infinitely worse because now you have a small leak with different operating pressure characteristics and flammability to boot.
Here is another goodie to think about. Any shop that is smart will have a refrigerant identifier to help protect their expensive AC equipment. As soon as they test your car they will let you know that they are not going to work on your AC system. They don't want that crap inside their machine, hoses, or tank. You have successfully rendered your car a DIY car forever. On the bright and sunny side of things you likely still get the AC service by shops of less repute that don't invest in proper equipment.
Of course what do I know I am just a forum poster. Time to sign off and polish my Honda master tech wall plaque.
First we will start with your new refrigerant is NOT approved for use on highways in the US.
Second lets hope you don't get into any wrecks that cause leakage because YOU will liable to damages caused to people by your own negligence. This might involve occupants of your car or other cars. It might involve first responders including paramedics, police, or firefighters.
The system was designed to work a certain way with a certain chemical. In the past you have shown a complete willingness to assume you know better than engineering teams when in fact you don't. Was your system working at peak design efficiency? I bet it wasn't.
Presumptions and assumptions. You compare before and after cooling times. Did you measure starting temp in the interior? Did you record the starting vent temp? Solar load? Heat load in the ducting? Did you record the ambient humidity? Did you check operating pressure before and after? These all affect cool times.
The compressor causes less drag on the engine? Explain how. The compressor runs less time before cycling. How much refrigerant did you recover? Was it properly full of proper R134a or was it already low or filled with an unknown blend of mystery gases. Counterfeit/bad R134a is a serious problem in this country. It doesn't perform as it should and is cheaply available in bulk.
Did the system just have a small leak and needed the system brought back to a full charge? If so you have made it infinitely worse because now you have a small leak with different operating pressure characteristics and flammability to boot.
Here is another goodie to think about. Any shop that is smart will have a refrigerant identifier to help protect their expensive AC equipment. As soon as they test your car they will let you know that they are not going to work on your AC system. They don't want that crap inside their machine, hoses, or tank. You have successfully rendered your car a DIY car forever. On the bright and sunny side of things you likely still get the AC service by shops of less repute that don't invest in proper equipment.
Of course what do I know I am just a forum poster. Time to sign off and polish my Honda master tech wall plaque.
#1759
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Mods for better AC performance
Is it illegal in any state?
#1760
The legs in the public bathroom stall
Re: Mods for better AC performance
The reason Germany doesn't approve 1234yf is the same as some of the reasons I listed for why you shouldn't have propane/butane/hydrocarbon in your system. They don't want first responders dying inside their nations tunnels while dealing with traffic accidents.
And yes Honeywell/dupont are wagging the dog on this one. It was expected more than 15 years ago that as soon as the patent on R134a ran out that the EPA would require changing to something else that was new and patented by 1 or 2 companies to keep their monopoly going. I believe that author Michael Crichton wrote about this back in the 90s. He was the author of Jurassic park, ER, congo, and many other films/franchises over the course of 30+ years.
#1762
Re: Mods for better AC performance
Yes it is, Which is why german automakers are NOT using it. But the condition required to burn it are fairly difficult to achieve. The worst part about burning 1234yf isn't the fact that it burns. The problem is the fact that the gases released as it burns are very nasty. Memory tells me that it releases a hydrofluoric acid within its smoke which is some of the nastiest stuff around.
The reason Germany doesn't approve 1234yf is the same as some of the reasons I listed for why you shouldn't have propane/butane/hydrocarbon in your system. They don't want first responders dying inside their nations tunnels while dealing with traffic accidents.
And yes Honeywell/dupont are wagging the dog on this one. It was expected more than 15 years ago that as soon as the patent on R134a ran out that the EPA would require changing to something else that was new and patented by 1 or 2 companies to keep their monopoly going. I believe that author Michael Crichton wrote about this back in the 90s. He was the author of Jurassic park, ER, congo, and many other films/franchises over the course of 30+ years.
The reason Germany doesn't approve 1234yf is the same as some of the reasons I listed for why you shouldn't have propane/butane/hydrocarbon in your system. They don't want first responders dying inside their nations tunnels while dealing with traffic accidents.
And yes Honeywell/dupont are wagging the dog on this one. It was expected more than 15 years ago that as soon as the patent on R134a ran out that the EPA would require changing to something else that was new and patented by 1 or 2 companies to keep their monopoly going. I believe that author Michael Crichton wrote about this back in the 90s. He was the author of Jurassic park, ER, congo, and many other films/franchises over the course of 30+ years.
#1763
PITA Admin
Administrator
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Rep Power: 338 Re: Mods for better AC performance
huh, so everybody here have been sniffing the fumes of the coolant chemical?
Well, the way EPA is now...
Well, the way EPA is now...
#1764
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Mods for better AC performance
Here's a related read that ask some the similar questions here: http://hvac-talk.com/vbb/showthread.php?1584811-Enviro-Safe
See reply #18 in that thread.
See reply #18 in that thread.
#1765
Re: Mods for better AC performance
Here's a related read that ask some the similar questions here: http://hvac-talk.com/vbb/showthread.php?1584811-Enviro-Safe
See reply #18 in that thread.
See reply #18 in that thread.
#1766
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Mods for better AC performance
I'd like to get my a/c system cooler. Works fine on overcast days, at night or if I keep my car parked in the shade but on hot, humid Florida days it struggles.
#1767
Re: Mods for better AC performance
I presume the condenser is clean, the system is correctly charged and you already tinted the windows? If you can make the AC a lot colder by spraying the condenser with water, maybe do number 4. Look into number 2 regardless though, it always helps.
#1768
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Mods for better AC performance
Factory tinted windows. Not interested in darker tint.
I clean the condensor with a hose and HVAC foam every six months.
Engine is B20 and the prior owner's friend (10 year a/c tech) installed a complete, new HVAC system minus the evaporator three years ago.
I've owned two 6th gens and this current 5th gen and their a/c systems have all been weak and cools the same way: struggles on hot days. Seems to be a common issue: https://www.google.com/search?ei=Umk....0.LyKhEb9D1jE
My mom has a 7th gen and the a/c works great during the Florida summers and all other seasons.
Last edited by Wankenstein; 06-24-2018 at 05:07 AM.
#1769
Re: Mods for better AC performance
Sytem chareged correctly
Factory tinted windows. Not interested in darker tint.
I clean the condensor with a hose and HVAC foam every six months.
Engine is B20 and the prior owner's friend (10 year a/c tech) installed a complete, new HVAC system minus the evaporator three years ago.
I've owned two 6th gens and this current 5th gen and their a/c systems have all been weak and cools the same way: struggles on hot days. Seems to be a common issue: https://www.google.com/search?ei=Umk....0.LyKhEb9D1jE
My mom has a 7th gen and the a/c works great during the Florida summers and all other seasons.
Factory tinted windows. Not interested in darker tint.
I clean the condensor with a hose and HVAC foam every six months.
Engine is B20 and the prior owner's friend (10 year a/c tech) installed a complete, new HVAC system minus the evaporator three years ago.
I've owned two 6th gens and this current 5th gen and their a/c systems have all been weak and cools the same way: struggles on hot days. Seems to be a common issue: https://www.google.com/search?ei=Umk....0.LyKhEb9D1jE
My mom has a 7th gen and the a/c works great during the Florida summers and all other seasons.
#1770
Can transmission oil be too cold?
I have a Mishimoto racing radiator, so I don't have a transmission oil cooler in the radiator. However, the car has a Hayden 679 cooler that is mounted behind the bottom grille for maximum airflow. The cooler so well that the oil cooling pipes on the transmission barely get hot. Is that bad? I don't think that anything is going to get too cold during the summer here in Memphis, but I wanted to check. Thanks!