Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > 911 / 930 Turbo & Super Charging Forum

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
cdill's Avatar
 
Join Date: Dec 2006
Location: Denver
Posts: 604
1 Bar Boost Spring 930?

I posted this topic in the 911 forum so I apologize for the re-post. I am looking for some information on adding more boost to my '89 930. I was told by my mechanic that the 1 Bar boost spring is the way to go. After consulting the 911 forum there seems to be some opinion that the 1 bar could cause the car to ping and I should go with a .9. Any ideas or information would be great. I was also wondering if there is an actual Porsche part that the dealer offers to do this and if so what the part# was. I also live in Denver so I am a mile above sea level. Thanks for the help.
Old 04-04-2007, 01:14 PM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
Gotta Jibboo
 
BSiple's Avatar
 
Join Date: Feb 2002
Location: Fort Collins Colorado
Posts: 4,801
Garage
Send a message via AIM to BSiple
Is it the stock wastegate?

Bill
__________________
2003 996TT
1992 964 Turbo (sold) Holy crap are these expensive now!
1986 911 Cabriolet (sold)

I don't know why I do the hillbilly things I do.
Old 04-04-2007, 02:08 PM
  Pelican Parts Technical Article Directory    Reply With Quote #2 (permalink)
Registered User
 
cdill's Avatar
 
Join Date: Dec 2006
Location: Denver
Posts: 604
Quote:
Originally posted by BSiple
Is it the stock wastegate?

Bill
The car is 100% stock with about 33,000 miles on it
Old 04-04-2007, 02:30 PM
  Pelican Parts Technical Article Directory    Reply With Quote #3 (permalink)
Registered User
 
dewolf's Avatar
 
Join Date: Jan 2007
Location: Australia
Posts: 5,866
Add an adjustable controller but leave the 1.0bar cutout functional. You can run around on stock boost the majority of time but on a nice cool day you can wind it up
__________________
In Heaven… the mechanics are German, the chefs are French, the police are British, the lovers are Italian and everything is organized by the Swiss.
In Hell…the mechanics are French, the police are German, the chefs are British, the lovers are Swiss and everything is organized by the Italians.
Old 04-04-2007, 06:03 PM
  Pelican Parts Technical Article Directory    Reply With Quote #4 (permalink)
Registered User
 
WydRyd's Avatar
 
Join Date: Mar 2002
Posts: 3,563
1 bar isn't that much boost! HEck, I run 1.15bar on a daily basis! What octane fuel are you using in your car?

I run 98 octane RON (or 93/94 US PON).

I guess if you have stock i/cooler and no fuel enrichment, you're in danger zone

You really should upgrade to an aftermarket i/cooler. The OEM unit is a piece of junk!
__________________
Merv
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
Old 04-04-2007, 06:11 PM
  Pelican Parts Technical Article Directory    Reply With Quote #5 (permalink)
Registered User
 
cdill's Avatar
 
Join Date: Dec 2006
Location: Denver
Posts: 604
The best fuel that I can get in Denver on a regular basis is 91 octane. and with very limited stations in town pumping race gas that is 105 octane @ $6.00 plus a gallon I really don't want to takeout a 2nd mortage to put gas in the car.
Old 04-04-2007, 07:11 PM
  Pelican Parts Technical Article Directory    Reply With Quote #6 (permalink)
 
Now Available for Ordering:   101 Projects For Your BMW 3 Series 1982-2000  [more info]
Gotta Jibboo
 
BSiple's Avatar
 
Join Date: Feb 2002
Location: Fort Collins Colorado
Posts: 4,801
Garage
Send a message via AIM to BSiple
I would call Pelican and ask if they can get the 1.0 bar spring for you. If not, I know Performance Parts sells them.

Bill
__________________
2003 996TT
1992 964 Turbo (sold) Holy crap are these expensive now!
1986 911 Cabriolet (sold)

I don't know why I do the hillbilly things I do.
Old 04-05-2007, 09:15 AM
  Pelican Parts Technical Article Directory    Reply With Quote #7 (permalink)
Registered User
 
cdill's Avatar
 
Join Date: Dec 2006
Location: Denver
Posts: 604
[QUOTE]Originally posted by BSiple
I would call Pelican and ask if they can get the 1.0 bar spring for you. If not, I know Performance Parts sells them.

Bill
[/QUOTE

I actually called both of them. Pelican has one for about $104.00 and Performance has one for about $60.00 that comes with a shim to up the boost to 1.2 Bar if the shim is added. I am just not sure which one to get I have a feeling that the one from Pelican is going to be better quality which is what I would prefer. But, I have also been told that a .9 Bar spring is the way to go since the rest of the car is stock. I am just not sure which spring to get. I was hoping that this was a Porsche part that could be obtained through the dealer or could get some feed back from someone who has done this modification. Thanks for all the help
Old 04-05-2007, 09:47 AM
  Pelican Parts Technical Article Directory    Reply With Quote #8 (permalink)
Registered User
 
GO DAWG GO's Avatar
 
Join Date: Jan 2007
Location: Inland Empire of the left coast
Posts: 1,233
Garage
I bought my 1 bar spring from Performance Products for $58. I was fairly easy to install if you can get the wastegate off the exhaust manifold. I installed mine with two carpenters clamps...My indicated boost went from .6 1/2 to .8 indicated. Did feel a little more umf...I will install a good boost gauge and see what it is reallly at. I hear the stock gauge usually reflects .8 for 1 bar...Calibration issues.

Thanks

Bob
__________________
1 bad 930
Old 04-05-2007, 09:56 AM
  Pelican Parts Technical Article Directory    Reply With Quote #9 (permalink)
Gotta Jibboo
 
BSiple's Avatar
 
Join Date: Feb 2002
Location: Fort Collins Colorado
Posts: 4,801
Garage
Send a message via AIM to BSiple
Who makes the one that Pelican sells? I would stay away from anything with a shim.

Another option is to get a 46mm Tial Wastegate and you can get springs from .3 bar to .8 bar, and using a combination, get the .9 bar that JW reccomends.

Bill
__________________
2003 996TT
1992 964 Turbo (sold) Holy crap are these expensive now!
1986 911 Cabriolet (sold)

I don't know why I do the hillbilly things I do.
Old 04-05-2007, 09:56 AM
  Pelican Parts Technical Article Directory    Reply With Quote #10 (permalink)
Gotta Jibboo
 
BSiple's Avatar
 
Join Date: Feb 2002
Location: Fort Collins Colorado
Posts: 4,801
Garage
Send a message via AIM to BSiple
cdill, I have a .8 bar spring in my car and work in Broomfield if you'd like to go for a ride sometime. When I got it, I had 1.1 bar worth of springs in it. I can tell a major difference changing the springs, but I was worried about engine life at 1.1 bar.

Bill
__________________
2003 996TT
1992 964 Turbo (sold) Holy crap are these expensive now!
1986 911 Cabriolet (sold)

I don't know why I do the hillbilly things I do.
Old 04-05-2007, 09:58 AM
  Pelican Parts Technical Article Directory    Reply With Quote #11 (permalink)
A fellow Pelacanite
 
NathanUK's Avatar
 
Join Date: Nov 2006
Location: UK
Posts: 2,002
Garage
A safer option would be to buy a better intercooler or a K27HFS. I appreciate that a 1bar spring is much cheaper.
I value my engine much higher than the cost of both IC & K27HFS put together though.
__________________
1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 04-05-2007, 03:20 PM
  Pelican Parts Technical Article Directory    Reply With Quote #12 (permalink)
Registered User
 
WydRyd's Avatar
 
Join Date: Mar 2002
Posts: 3,563
Quote:
Originally posted by BSiple
cdill, I have a .8 bar spring in my car and work in Broomfield if you'd like to go for a ride sometime. When I got it, I had 1.1 bar worth of springs in it. I can tell a major difference changing the springs, but I was worried about engine life at 1.1 bar.

Bill
If you have built the motor with quality fasteners, addressed fueling and intercooling etc, there's no reason why you can't run 1.1bar all day, every day

Of course, you need decent 93/94 octane fuel... not that crappy 91 Octane stuff.
__________________
Merv
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
Old 04-05-2007, 03:42 PM
  Pelican Parts Technical Article Directory    Reply With Quote #13 (permalink)
Gotta Jibboo
 
BSiple's Avatar
 
Join Date: Feb 2002
Location: Fort Collins Colorado
Posts: 4,801
Garage
Send a message via AIM to BSiple
Merv, I agree. One of the main factors was the octane level in the gas. The motor has had a ton of work, twin plugged etc., so I wasn't so worried about that as much.

At some point and time the Wastegate was hooked up wrong and wouldn't even open, now that made the car fast let me tell you, until of course the overboost kicked in, which was damn quick.

I have thought of going up to 1.0 bar (I have the springs for the Tial to do it), we'll see.

Bill
__________________
2003 996TT
1992 964 Turbo (sold) Holy crap are these expensive now!
1986 911 Cabriolet (sold)

I don't know why I do the hillbilly things I do.
Old 04-05-2007, 03:57 PM
  Pelican Parts Technical Article Directory    Reply With Quote #14 (permalink)
Registered User
 
930turbo's Avatar
 
Join Date: Jul 2006
Location: Valrico Florida
Posts: 199
I run a 1.0 spring in my stock three liter with the addition of an intercooler. I'm experiencing some issuses now wher I can't get full boost but it's not related to the spring. I never heard any ping when I did get full boost, even on a hot day. I run 93 R+M octane pump gas. I've never built a motor that required $5 a gallon gas.
__________________
'77 930 turbo Garretson I/C 1 BAR spring, (2) '82 Triumph Bonneville Royal Wedding Edition
Past rides: '74 914 1.9 liter twin plugged track car, '83 928S, '87 924S, '75 911S w '78 ROW 3.0, '72 911T, '70 911T and various other insignificant domestic examples. Happiness is a grey tailpipe! Turbo lag......it's worth the wait!
Old 04-05-2007, 05:57 PM
  Pelican Parts Technical Article Directory    Reply With Quote #15 (permalink)
Registered User
 
cdill's Avatar
 
Join Date: Dec 2006
Location: Denver
Posts: 604
I put in a call to Andial and I think I am going to get their spring and possibly their intercooler. Thanks again for all of your thoughts
Old 04-06-2007, 06:08 AM
  Pelican Parts Technical Article Directory    Reply With Quote #16 (permalink)
A fellow Pelacanite
 
NathanUK's Avatar
 
Join Date: Nov 2006
Location: UK
Posts: 2,002
Garage
I would also call Stephen Kaspar of Imagine Auto.

www.imagineauto.com
__________________
1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 04-07-2007, 03:57 AM
  Pelican Parts Technical Article Directory    Reply With Quote #17 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 11:57 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2016 Pelican Parts - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.