bk56190
Full Member
Karma: +4/-0
 Offline
Posts: 91
|
 |
« Reply #150 on: May 18, 2018, 04:53:15 PM »
|
|
|
Hey guys,
Does anyone know the characteristics of LOBA HP25 for 2.5TFSI ? (pistons size ? FP size ? )
|
|
|
|
« Last Edit: May 19, 2018, 01:07:25 AM by bk56190 »
|
Logged
|
|
|
|
Bitshifter
Full Member
Karma: +10/-7
Offline
Posts: 94
|
|
« Reply #151 on: June 02, 2018, 01:34:40 AM »
|
|
|
I think it´s the same size like the autotech kit (11,5mm piston diameter).
|
|
|
|
|
Logged
|
|
|
|
bk56190
Full Member
Karma: +4/-0
Offline
Posts: 91
|
|
« Reply #152 on: June 03, 2018, 10:08:27 PM »
|
|
|
Few day ago, Loba said me 12.1mm.
|
|
|
|
|
Logged
|
|
|
|
bk56190
Full Member
Karma: +4/-0
Offline
Posts: 91
|
|
« Reply #153 on: August 20, 2018, 12:01:45 PM »
|
|
|
Hello,
HPFP from LOBA received and installed on my 2.5TFSI. Loba said me piston size is 12.1mm, so i use these values :
first :
- RQUAHDPK : 36,6mm²
- SKHDPMX : 4,5mm
- VHDP : 368cm3
=> actual pressure rail > requeted
then :
- RQUAHDPK : 36,6mm²
- SKHDPMX : 4,5mm
- VHDP : 348cm3
=> same result, actual pressure rail > requeted
Ori values are :
- RQUAHDPK : 25mm²
- SKHDPMX : 4,5mm
- VHDP : 251cm3
Do I need to reduce SKHDPMX ?
|
|
|
|
|
Logged
|
|
|
|
bk56190
Full Member
Karma: +4/-0
Offline
Posts: 91
|
|
« Reply #154 on: August 21, 2018, 12:12:41 PM »
|
|
|
I try SKHDPMX =5 (Loba said to me), but same behaviour  |
|
|
|
|
Logged
|
|
|
|
pocoloco
Newbie
Karma: +0/-7
Offline
Posts: 21
|
|
« Reply #155 on: December 02, 2018, 05:49:59 PM »
|
|
|
any updates in here?
i´m also actually thinking about an upgrade hpfp for an rs3, but want to buy one where measurements are clear.
i asked autotech for dimensions but got no answer, anything new to the loba hpfp?
or any other advices whitch manufacturer to use?
|
|
|
|
|
Logged
|
|
|
|
|
birchbark506
|
|
« Reply #156 on: December 03, 2018, 07:57:04 AM »
|
|
|
Vis motorsport makes a good hpfp
|
|
|
|
|
Logged
|
|
|
|
pocoloco
Newbie
Karma: +0/-7
Offline
Posts: 21
|
|
« Reply #157 on: December 03, 2018, 02:32:54 PM »
|
|
|
Vis motorsport makes a good hpfp
hm, everything out of stock in their shop, so not really an option. |
|
|
|
|
Logged
|
|
|
|
bk56190
Full Member
Karma: +4/-0
Offline
Posts: 91
|
|
« Reply #158 on: December 20, 2018, 03:02:48 AM »
|
|
|
VIS doesn't seem to be always good quality.
|
|
|
|
|
Logged
|
|
|
|
Richym
Newbie
Karma: +0/-0
Offline
Posts: 15
|
|
« Reply #159 on: December 20, 2018, 09:57:10 AM »
|
|
|
VIS doesn't seem to be always good quality.
I’ve fitted quite a few now with no problems Sent from my iPhone using Tapatalk Pro |
|
|
|
|
Logged
|
|
|
|
Piar
Jr. Member
Karma: +0/-3
Offline
Posts: 28
|
|
« Reply #160 on: December 22, 2018, 09:22:07 PM »
|
|
|
Hello,
HPFP from LOBA received and installed on my 2.5TFSI. Loba said me piston size is 12.1mm, so i use these values :
first :
- RQUAHDPK : 36,6mm²
- SKHDPMX : 4,5mm
- VHDP : 368cm3
=> actual pressure rail > requeted
then :
- RQUAHDPK : 36,6mm²
- SKHDPMX : 4,5mm
- VHDP : 348cm3
=> same result, actual pressure rail > requeted
Do I need to reduce SKHDPMX ?
Hi! have you solved problem? I have also bought loba hpfp and see same problem But if loba said that piston size is 12.1mm math have to be RQUAHDPK : (12.1/2)square=36.6025 - SKHDPMX : 4,5mm(it could be change just in case if you changed your camshaft sprocket(which drives hpfp)) - VHDP : 36.6025*pi*4,5=517,4568 |
|
|
|
|
Logged
|
|
|
|
bk56190
Full Member
Karma: +4/-0
Offline
Posts: 91
|
|
« Reply #161 on: December 23, 2018, 12:17:14 AM »
|
|
|
Now, with more boost, more fuel (ethanol), I have put a specified rail pressure of 140bar, actual is around 130.
|
|
|
|
|
Logged
|
|
|
|
Bitshifter
Full Member
Karma: +10/-7
Offline
Posts: 94
|
|
« Reply #162 on: January 24, 2019, 08:32:48 PM »
|
|
|
Is there a solution for the rail pressure problem?
Just another question: does it make sence to raise pressure >130bar (with aftermarket PRV)?
HW
engine CDLF
IE HPFP upgrade kit (9.8mm piston)
HPFP upgraded with roller kit
LPFP+controller TTRS
PRV RS4
injectors stock CDL
SW
KFPRSOLHKS = 132bar
KFPRSOLHMM = 132bar
KFPRSOLHOM = 132bar
KFPRSOLKH = 132bar
KFPRSOLOFF = 132bar
KFPRSOLSCH = 132bar
KLLFPRSG = 140bar = 0,540155
KLPRMAX = 132
VHDP = 407,3
RQUAHDPK = 24
SKHDPMX=5,4
PGBDVHDO = 140bar
KFFLAF= stock from TTRS
KFNTBKS =stock from TTRS
KRKTE=0,02880
|
|
|
|
|
Logged
|
|
|
|
Tezotto01
Full Member
Karma: +3/-12
Offline
Posts: 97
|
|
« Reply #163 on: February 18, 2019, 08:42:11 AM »
|
|
|
Is there a solution for the rail pressure problem?
Just another question: does it make sence to raise pressure >130bar (with aftermarket PRV)?
HW
engine CDLF
IE HPFP upgrade kit (9.8mm piston)
HPFP upgraded with roller kit
LPFP+controller TTRS
PRV RS4
injectors stock CDL
SW
KFPRSOLHKS = 132bar
KFPRSOLHMM = 132bar
KFPRSOLHOM = 132bar
KFPRSOLKH = 132bar
KFPRSOLOFF = 132bar
KFPRSOLSCH = 132bar
KLLFPRSG = 140bar = 0,540155
KLPRMAX = 132
VHDP = 407,3
RQUAHDPK = 24
SKHDPMX=5,4
PGBDVHDO = 140bar
KFFLAF= stock from TTRS
KFNTBKS =stock from TTRS
KRKTE=0,02880
Has anyone managed to solve this problem? After updating the HPFP I have the same problem, at high rotations the pressure rises to the point of shutting off the engine due to excess pressure. |
|
|
|
|
Logged
|
|
|
|
Bitshifter
Full Member
Karma: +10/-7
Offline
Posts: 94
|
|
« Reply #164 on: February 19, 2019, 10:42:41 AM »
|
|
|
Has anyone managed to solve this problem?
After updating the HPFP I have the same problem, at high rotations the pressure rises to the point of shutting off the engine due to excess pressure.
In your case it shoud be the LPFP controller! |
|
|
|
|
Logged
|
|
|
|
|
