 |
|
|
|
|
|
|
|
|
|
|
|
EBXR8380
Fordmods - Getting Side Ways
Age:55
Posts: 2555
Joined: 07 Nov 2004
Location: Penrith NSW, Australia
View User Gallery (4)
|
 Posted: Sat Jun 17, 2006 12:21 am Post subject: |
 |
|
Is the wastegate pipeing on one exhaust collectoror the whole lot?
In pic it looks like its on one # 4 ??...
Are you 100% sure you have pressure lines connected properly??? |
|
| Back to top |
|
|
|
|
|
|
|
|
|
fritzz
Fordmods - Getting Side Ways
Age:20
Posts: 918
Joined: 26 Nov 2004
Location: Waroona WA, Australia
View User Gallery (0)
|
| Posted: Sat Jun 17, 2006 12:32 am Post subject: |
|
|
| i just put in my 11.4psi spring, and it went strait to over boost and it cut injectors. i have the overboost set at 15psi. so tomorrow im going to try the 4psi spring and play around with the boost controller. |
|
| Back to top |
|
|
|
|
|
|
|
|
|
CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
View User Gallery (22)
|
| Posted: Sat Jun 17, 2006 8:15 am Post subject: |
|
|
| Hey graham did M"s car have this issue with the new manifold and the old turbo? Kind of a similar set up |
|
| Back to top |
|
|
|
|
|
|
|
|
|
tjb45
Fordmods - Getting Side Ways
Age:28
Posts: 570
Joined: 05 Nov 2004
Location: Wodonga VIC, Australia
View User Gallery (0)
|
| Posted: Sat Jun 17, 2006 10:14 am Post subject: |
|
|
Just a question for all the guys that know a lot more then me  ... I don’t see how a waste gate spring can be rated at a specific PSI. As each different motor/manifold/turbo will require the turbo to spin at different rates to produce the same PSI, and there for have different pressures in the turbo manifold.
ebs_4L, I think your right, if your still getting 14psi with no waste gate attached you will defiantly need more/bigger waste gate pipes. You would think two 1 1/2 holes in the manifold would be enough to let out enough exhaust gassed.
Good luck..
Tim |
|
| Back to top |
|
|
|
|
|
|
|
|
|
ebs_4l
Fordmods - Getting Side Ways
Age:24
Posts: 849
Joined: 23 Sep 2005
Location: kadina SA, Australia
View User Gallery (0)
|
| Posted: Sat Jun 17, 2006 10:17 am Post subject: |
|
|
| EBXR8380 wrote: | Is the wastegate pipeing on one exhaust collectoror the whole lot?
In pic it looks like its on one # 4 ??...
Are you 100% sure you have pressure lines connected properly??? |
the outlets are joined to the collector in the area where there is kinda an open chamber, like, it is above the joins in the pipe, it is vented from the inside edge, and the number 4 pipe you can see.
yes, lines are hooked up ok. as i said, with the wastegate removed, i still got 14psi... today i aim to take the gate off once more, this time it will be with the 1.5in outlets, instead of the 1.25in. If that stops it boosting too far, then i just gotta get the bigger gate. if not, then i will be running a low boost setting of 15psi |
|
| Back to top |
|
|
|
|
|
|
|
|
|
CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
View User Gallery (22)
|
| Posted: Sat Jun 17, 2006 11:05 am Post subject: |
|
|
| HAve you considered mounting the gate straight off the exhaust housing? it means butchering the housing, but could be your best bet |
|
| Back to top |
|
|
|
|
|
|
|
|
|
ebs_4l
Fordmods - Getting Side Ways
Age:24
Posts: 849
Joined: 23 Sep 2005
Location: kadina SA, Australia
View User Gallery (0)
|
| Posted: Sat Jun 17, 2006 12:11 pm Post subject: |
|
|
i have consided it, and dont like the position, or the appearance, i will run a 15psi base before id do that.
the wastegate spring psi, means, with that amount of pressure on the pressure signal line, the wastegate will be fully open... meaning, provided your wastegate is big enough, you shouldnt see any more than that amount of boost |
|
| Back to top |
|
|
|
|
|
|
|
|
|
fritzz
Fordmods - Getting Side Ways
Age:20
Posts: 918
Joined: 26 Nov 2004
Location: Waroona WA, Australia
View User Gallery (0)
|
| Posted: Sat Jun 17, 2006 11:47 pm Post subject: |
|
|
today i tested my wastegate on the bench with a gauge and the air compressor to find that the 4psi sping opened at 10psi and my 12psi spring opened at 25psi, so i am gessing that the exhaust gasses help open it a little.
how many psi do u recon the exhaust gasses would make, to help open the gate??? |
|
| Back to top |
|
|
|
|
|
|
|
|
|
EBXR8380
Fordmods - Getting Side Ways
Age:55
Posts: 2555
Joined: 07 Nov 2004
Location: Penrith NSW, Australia
View User Gallery (4)
|
| Posted: Sun Jun 18, 2006 2:09 am Post subject: |
|
|
| CHEF wrote: | | Hey graham did M"s car have this issue with the new manifold and the old turbo? Kind of a similar set up |
NO but he did have issues with internal gated Gt3540...No matter ho much we machined out wastegate ...
Are you guys saying that with w/g off manifold it still makes boost????
If ths is the case, then some thinking is required in how its connected to maifold.. It seems the path to turbine is better than w/g????
If you saw the small gates on my SC 61's you'll be surprised that they hold boost from 8 PSI upward... Keep in mind with decent turbo, holding boost low requires high wastegate flow...
YesI would say the w/g spring has to push against exhaust pressure?? Otherwise how is it going to close??? |
|
| Back to top |
|
|
|
|
|
|
|
|
|
CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
View User Gallery (22)
|
| Posted: Sun Jun 18, 2006 10:08 am Post subject: |
|
|
| Where you guys running your vac line to and from? Comp housing straight to the gates side port is best |
|
| Back to top |
|
|
|
|
|
|
|
|
|
AKO
Fordmods - Getting Side Ways
Posts: 2660
Joined: 27 Jan 2005
Location: Mackay, Far North New South Wales. QLD, Australia
View User Gallery (11)
|
| Posted: Sun Jun 18, 2006 10:20 am Post subject: |
|
|
| My overboosting problem was caused by a 27psi wastegate spring. Once I installed a 10psi spring all was sweet. I think this problem is probably more related to the position of the wastegate pipe into the collector. Just my opinion. |
|
| Back to top |
|
|
|
|
|
|
|
|
|
fritzz
Fordmods - Getting Side Ways
Age:20
Posts: 918
Joined: 26 Nov 2004
Location: Waroona WA, Australia
View User Gallery (0)
|
| Posted: Sun Jun 18, 2006 1:16 pm Post subject: |
|
|
| CHEF wrote: | | Where you guys running your vac line to and from? Comp housing straight to the gates side port is best |
my vacumeline starts just before the throttle body and goes to the side port on the gate. i have tryed running a short line from plenum across the rocker cover and to the side port and that made no difrens. |
|
| Back to top |
|
|
|
|
|
|
|
|
|
ebs_4l
Fordmods - Getting Side Ways
Age:24
Posts: 849
Joined: 23 Sep 2005
Location: kadina SA, Australia
View User Gallery (0)
|
| Posted: Sun Jun 18, 2006 1:58 pm Post subject: |
|
|
| EBXR8380 wrote: | Are you guys saying that with w/g off manifold it still makes boost????
If ths is the case, then some thinking is required in how its connected to maifold.. It seems the path to turbine is better than w/g????
|
this guy is on the money... the problem is getting the gasses out of the collector, which is especially difficult when the gas velocity is high enough
im yet to drop the wastegate back off and try it, i think now that maybe my piping is good enough, and i may just need the bigger gate, the test will soon prove it either way (ive been very slack, got way too sick of working on it)
re. EBP, generally in most street type turbo setups, you can see anywhere from 1.5-2x the inlet pressure in the exhaust manifold.. so then youd need to calculate the area of the valve, and times that by the EBP |
|
| Back to top |
|
|
|
|
|
|
|
|
|
pyroay
Fordmods Audio and Turbo Expert
Age:28
Posts: 2112
Joined: 14 Dec 2004
Location: Traralgon VIC, Australia
View User Gallery (0)
|
| Posted: Mon Jun 19, 2006 8:25 am Post subject: |
|
|
You shouldn't get that imuch of an increase over the spinrg pressure setting.
Cold air and wet air is more dense so you get higher readings but should only be by around 2psi.
Mine is a 7psi spring and I get 7.5-8psi.
8.5psi at the most on low boost. |
|
| Back to top |
|
|
|
|
|
|
|
|
|
ebs_4l
Fordmods - Getting Side Ways
Age:24
Posts: 849
Joined: 23 Sep 2005
Location: kadina SA, Australia
View User Gallery (0)
|
| Posted: Thu Jun 22, 2006 6:36 pm Post subject: |
|
|
this is absolute s**t.....
took gate off tonight, gave it a run in 4th, made 16psi at about 5000rpm, thats when i backed off
SOOOOO, now im going to add another wastegate, ill run it off the turbine housing... that should fukn control it
my summary is, a GT3540r .7 1.06 is too small for the 4l in a well designed, high flowing system. i should have bought a GT42R |
|
| Back to top |
|
|
|
|
|
|
|
|
|
CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
View User Gallery (22)
|
| Posted: Thu Jun 22, 2006 7:24 pm Post subject: |
|
|
I wouldn't stress about it, you didnt really design and build this set up to run under 300wkws did you?
I think you just have a great example of how a well designed, hi flowing set up performs... tune it for high boost and enjoy it man. |
|
| Back to top |
|
|
|
|
|
|
|
|
|
EBXR8380
Fordmods - Getting Side Ways
Age:55
Posts: 2555
Joined: 07 Nov 2004
Location: Penrith NSW, Australia
View User Gallery (4)
|
| Posted: Fri Jun 23, 2006 1:41 pm Post subject: |
|
|
If its tuned rich and retarded this can lead to turbo doing this alittle as unburnt fuel will burn in manifold / turbine...
A higher trim exh wheel can help BUT this will be at the expence of low rpm spool.... |
|
| Back to top |
|
|
|
|
|
|
|
|
|
ebs_4l
Fordmods - Getting Side Ways
Age:24
Posts: 849
Joined: 23 Sep 2005
Location: kadina SA, Australia
View User Gallery (0)
|
| Posted: Mon Jun 26, 2006 12:31 am Post subject: |
|
|
| well, its all back off again, and i have cut a hole in my turbine housing... havent got pics yet but should have the new addition to my wastegate outlets installed tommorw nite.. |
|
| Back to top |
|
|
|
|
|
|
|
|
|
CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
View User Gallery (22)
|
| Posted: Mon Jun 26, 2006 3:47 pm Post subject: |
|
|
| Fingers crossed it works mate |
|
| Back to top |
|
|
|
|
|
|
|
|
|
dcstraight
Moderator
Age:30
Posts: 3812
Joined: 05 Nov 2004
Location: Melbourne Interior: Cappucino Exterior: Sparkling Burgundy VIC, Australia
View User Gallery (0)
|
| Posted: Tue Jun 27, 2006 1:09 am Post subject: |
|
|
| CHEF wrote: | I wouldn't stress about it, you didnt really design and build this set up to run under 300wkws did you?
I think you just have a great example of how a well designed, hi flowing set up performs... tune it for high boost and enjoy it man. |
What he said - Aaron's car is also a testiment to daily driving with fair amount of power on tap - Aaron has done many kms and changed many things under his engine bay - the only thing still there from Day 1 (AFAIK) is the GT35/40.
Still hanging to see what results you report to us though  |
|
| Back to top |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
| |
| (c)2002-2009 Matti Jones and Brad Evans |
[47 queries :: 0.05877 seconds ]
|
|
