Hyper is at it again.
05-17-2009, 01:54 PM
#1
Boost Pope
Thread Starter
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,015
Total Cats: 6,587
Hyper is at it again.
It starts with this post at Miata.net: MX-5 Miata Forum - Need info on NB aftermarket FPR for 2001NB
After posting what I thought was a very helpful reply, I received this PM:
A new fuel cooling concept? I'm at a loss for words...
After posting what I thought was a very helpful reply, I received this PM:
Originally Posted by Hyper
I am working on a new fuel cooling concept and I need to gather all the info I can get for this project. . If I am not clear, please let me know, my english sucks.
I need to know what is the fuel pressure before the dampener and after the dampener and what would be the best location to install a fuel pressure gauge, my gauge goes all the way to 100psi. I also need to know more details on the OEM pulsation dampener, thanks.
I rather keep the project undisclosed to the forum until I do some testing of the concept on 1st Florida Dyno day, June 6th. Are you coming?
I need to know what is the fuel pressure before the dampener and after the dampener and what would be the best location to install a fuel pressure gauge, my gauge goes all the way to 100psi. I also need to know more details on the OEM pulsation dampener, thanks.
I rather keep the project undisclosed to the forum until I do some testing of the concept on 1st Florida Dyno day, June 6th. Are you coming?
Reply
0
0
05-17-2009, 02:54 PM
#6
I've been looking at that diagram for 10 minutes and can't figure out how the FPR inside the tank works... maybe it recirculates directly at the pump? The dampner is an easy concept... it just smoothes out minor fluctuations in pressure... fluctuations I would think primarily due to variances in voltage reaching the pump?
Can somebody "paint" on that diagram the actual fuel flow please?
Can somebody "paint" on that diagram the actual fuel flow please?
Reply
0
0
05-17-2009, 03:05 PM
#9
Boost Pope
Thread Starter
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,015
Total Cats: 6,587
There is no return line on the NB's fuel system.
Last edited by Joe Perez; 05-19-2009 at 08:00 AM.
Reply
0
0
05-17-2009, 04:04 PM
#13
Elite Member
iTrader: (1)
Join Date: Feb 2008
Location: Birmingham Alabama
Posts: 7,930
Total Cats: 45
I love how he is always working on concepts, but needs everyones help for the most basic of info. If you don't know **** about a fuel system, how are you going to work on a "fuel cooling concept"...
A side note, some of my dads old crazy friends used to take copper tubing and route the fuel near the exhaust to warm it up, and they claimed actually being able to tell a difference. Damn fools though.
A side note, some of my dads old crazy friends used to take copper tubing and route the fuel near the exhaust to warm it up, and they claimed actually being able to tell a difference. Damn fools though.
Reply
0
0
05-17-2009, 04:46 PM
#14
commercial fuel coolers are actually available, they look just like small transmission coolers, Musclecar guys I've talked to said they can reduce detonation/ping and increase power, and I've also read that one of the big reasons the NA fuel system was redesigned for the NB was due to high temperatures in the fuel tank, so there may be something to it I just havent looked into it, but when you can use something like a small transmission cooler I dont see why it needs to be hyper-ized.
Reply
0
0
05-17-2009, 05:33 PM
#16
Junior Member
Join Date: May 2008
Location: Nashville/Knoxville, TN
Posts: 314
Total Cats: 1
The FPR is essentially on a tee, such that it bleeds fuel out of the supply line (right after the pump) and dumps it straight out into the tank.
There is no return line on the NB's fuel system.
[img]http://img30.picoodle.com/img/img30/2/5/17/thraddax/f_NBPUMPm_149094d.gif[/im]
There is no return line on the NB's fuel system.
[img]http://img30.picoodle.com/img/img30/2/5/17/thraddax/f_NBPUMPm_149094d.gif[/im]
I'm redoing my fuel lines soon and I have an AFPR, could I just relocate it near the fuel tank and follow joe's diagram so that I could eliminate my return line, or is the nb fuel pump different and operate in a different way?
Reply
0
0
05-17-2009, 05:36 PM
#17
Boost Pope
Thread Starter
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,015
Total Cats: 6,587
The NB design actually creates some problems when significantly increasing power. With the FPR at the back, pressure drop across the system is not compensated for. It's better to keep the FPR at the front and retain the return line.
Reply
0
0
05-17-2009, 09:56 PM
#19
Junior Member
Join Date: Aug 2008
Location: MD/DE/PA
Posts: 333
Total Cats: 0
I've heard arguments made for both heating and cooling of fuel. I have never, however, heard any hard numbers one way or the other wherein the temperature of the fuel was correlated to HP or whatever, without any confounding variables messing up the deal. Maybe one way or the other makes a difference, maybe it doesn't, but I somehow doubt that it'd be too significant or we'd see fuel heating/cooling devices on more racing cars and whatnot. Hell, if it was that easy/cheap to increase performance, we'd see it on street cars.
I actually feel bad for Hyper. Kind of. I mean, he comes up with these weird *** ideas (hey, I've had my share, and then some) but he has no idea WTF he's talking about/what's going on. I mean, if he spent half the time actually READING and LEARNING about the systems he's talking about as he does figuring out how to "improve" them, he'd maybe actually know how they work.
Ok, so he deserves ridicule. He's just one of those people that I want to smack and see if they wake the hell up.
I actually feel bad for Hyper. Kind of. I mean, he comes up with these weird *** ideas (hey, I've had my share, and then some) but he has no idea WTF he's talking about/what's going on. I mean, if he spent half the time actually READING and LEARNING about the systems he's talking about as he does figuring out how to "improve" them, he'd maybe actually know how they work.
Ok, so he deserves ridicule. He's just one of those people that I want to smack and see if they wake the hell up.
Reply
0
0
