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 Forums > Porsche Forums > 911 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Mar 2010
Posts: 54
Garage
Which GT35R for my build?

This is a new build - Full Sequential EFI with Carrera manifold, heads port matched to manifold, twin-plug, 3.5 liter with 8.0:1 Nickies and JE pistons, ARP head-studs and bolts, etc. What configuration of the GT35R should I select? This will be a street motor, so torque, longevity, and quick boost will be the goals.

Old 06-08-2012, 04:26 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Mar 2010
Posts: 54
Garage
SC Cams also..........
Old 06-08-2012, 04:28 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
rodolf's Avatar
 
Join Date: Oct 2010
Posts: 96
EFI, carrera manifold, twin-plug, 3.5 CR 8:1 and GT35R..... WHY SC cams with all theses great parts !? You need 964 or GT2 cams

GT3582R with a/r 0.82 is a great turbo, from 380 to +500HP... but for 500 you need 964 or GT2 cams.
__________________
http://youtube.com/rodolf911
Old 06-08-2012, 05:45 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Forte500
 
Join Date: Jun 2010
Location: Greenwich
Posts: 162
This sounds exactly like my build....I went with GT35R with , .82 AR, T3 Flange, V-band discharge, single-scroll, and NO anti-surge housing (increases boost spool-up slightly, not needed on these engines). And - no water cooling - left ports open

The difference was AMAZING and full boost just under 3000RPM. Tires will spin and 1st and 2nd, almost in 3rd. Dyno'd at 540WHP at 1.1BAR (max recommended with 8:1 static compr).

+1 on 964 Cams -

I love my build - fast spool/minimal lag, amazing power throughout power-band, and very reliable. If I could turn the boost up, I'm certain the GT35R would pull to infinity.

Best money spent!
Old 06-08-2012, 06:15 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
1SIK930's Avatar
 
Join Date: Aug 2010
Location: Alta Loma, CA.
Posts: 137
Garage
I'm a little curious about your cam choice as well. Don't get me wrong, I'm not an engine builder, I don't know enough to say good or bad about SC cams on your build.

How about the new GTX3582R?
__________________
'87 930..Sold
'72 911T 3.2 MFI Twin Plug race motor, full cage, full coilovers, too many suspension mods to list, wide body, Fiske wheels, R888, fuel cell, fiberglass everything, 2091lbs

"You don't have to be CRAZY to own a sports car, but it helps"
Old 06-08-2012, 06:33 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Forte500
 
Join Date: Jun 2010
Location: Greenwich
Posts: 162
Considering your build, I think you'll want more steam throughout power band/RPMs which the 964 cams will provide. On a stock build, the SC cams are a bit torquier down low, but you'll have more than enough raw power on the low end. RE: GTX - not sure the juice $$ is worth the squeeze, but can't hurt.
Old 06-08-2012, 07:05 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
sjf911's Avatar
 
Join Date: Dec 2006
Location: Idaho
Posts: 5,727
Garage
Quote:
Originally Posted by forte500 View Post
This sounds exactly like my build....I went with GT35R with , .82 AR, T3 Flange, V-band discharge, single-scroll, and NO anti-surge housing (increases boost spool-up slightly, not needed on these engines). And - no water cooling - left ports open

The difference was AMAZING and full boost just under 3000RPM. Tires will spin and 1st and 2nd, almost in 3rd. Dyno'd at 540WHP at 1.1BAR (max recommended with 8:1 static compr).

+1 on 964 Cams -

I love my build - fast spool/minimal lag, amazing power throughout power-band, and very reliable. If I could turn the boost up, I'm certain the GT35R would pull to infinity.

Best money spent!
1+, this is almost exactly what I am currently in the process of doing with the T3 single scroll 0.82 AR turbine, V-band discharge, and 0.6 AR compressor housing with 3" cold intake. This came highly recommended from Chris at Turbokraft and the turbo oil supply kit from them is a work of art.
__________________
Steve
Sapere aude
1983 3.4L 911SC turbo. Sold
Old 06-08-2012, 07:16 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
Join Date: Mar 2011
Posts: 471
I believe the GTX3582R will flow as much as the GT40R (~700HP), but spool similar to a GT35R.
Old 06-08-2012, 07:17 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,844
A T3 at 540whp?!?!?

What am I doing wrong?
Old 06-08-2012, 07:56 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
rsrfan's Avatar
 
Join Date: Jun 2004
Location: Siesta Key, Florida
Posts: 1,237
Since this is a new build, I would strongly recommend going twin scroll on the Gt35 with the requisite headers. When I finally get around to my EFI conversion, she will be twin scroll. From my research, all else being equal twin scroll should decrease the onset of boost by 5-700 rpm...
__________________
JP
86 930/4 tribute beasty
81 sc beach beater
55 Belair
40 Ford pickup
Old 06-08-2012, 08:55 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered User
 
rodolf's Avatar
 
Join Date: Oct 2010
Posts: 96
How many psi tippy ? a/r .60/.82/1.06 ? cams ?
__________________
http://youtube.com/rodolf911
Old 06-08-2012, 08:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,844
3.4, 7.5:1, stock Carrera intake, heads, and cams, 1-bar from T60-1 (T4/.81 A/R), 1 5/8 primaries, 3 1/2" muffler straight-through, 4" tip.

Have dyno sheet of 427 whp but was said to have done 447.

Last edited by Tippy; 06-08-2012 at 09:23 AM..
Old 06-08-2012, 09:19 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
 
Registered User
 
rodolf's Avatar
 
Join Date: Oct 2010
Posts: 96
964 cams with 1.26mm timing ? With a CR 7.5:1 maybe you can try 1.2bar with 20 ignition timing.

I don't know the T60-1 turbo, it's like a k27hf or as big as a gt3582 ?
__________________
http://youtube.com/rodolf911
Old 06-08-2012, 11:05 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,844
Mu timing is way above that with single-plug and it's equivalent to a GT35 - just a tad smaller.
Old 06-08-2012, 11:43 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered User
 
rodolf's Avatar
 
Join Date: Oct 2010
Posts: 96
Try a little more boost. With my 964 cams, 3.4 single plug and gt35 i get 496rwhp at the dyno with 1.2bar.
__________________
http://youtube.com/rodolf911
Old 06-08-2012, 12:16 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Forte500
 
Join Date: Jun 2010
Location: Greenwich
Posts: 162
Sorry guys...T4 flange (larger).
Old 06-08-2012, 01:22 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Forte500
 
Join Date: Jun 2010
Location: Greenwich
Posts: 162
Frank Forte GT35R 930 turbo - YouTube


This was at .8BAR and before tweaks to tuning
Old 06-08-2012, 01:33 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,844
Quote:
Sorry guys...T4 flange (larger).
That makes a whole lot more sense!
Old 06-08-2012, 03:09 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Registered User
 
TurboKraft's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 2,692
Hi Doug,

The GT3582R with the standard T3 inlet GT turbine housing will get you to 15psi boost by 3000-3100rpm and 500-520rwhp comfortably on pump gas from your 3.5L. Two recent GT35R 3.3L engines with port work, SC cams, and flat 930 manifolds.
- 502hp/493tq at the wheels
- 500hp/488tq at the wheels
Both on West Coast 91-octane pump gas.

We've done as much as 540rwhp on pump gas from mild 1994 3.6T EFI engines (SC cams), or built 3.3L EFI engines running the flat manifold and bigger cams (964 or TK-EFI).

Example of recent 540rwhp -- see Kelly's 930 EFI conversion thread: Taking the EFI Plunge
3.3L, ported heads, flat manifold, but 964 cams. His turbo is Turbonetic's version of the GT35R in a marginally smaller A/R turbine housing (0.77).

sjf911 -- glad you like it!

GTX wheel or not to GTX wheel... the $600 question (approx. cost difference). On a 3.5L with SC cams and a Carrera manifold, I think you could run it. Make sure you don't get boost creep.

If chopping the headers to twin scroll it, we'd configure it with a T04 flange.
__________________
Chris Carroll
TurboKraft, Inc.
Tel. 480.969.0911
email: info@turbokraft.com
http://www.facebook.com/TurboKraft - http://www.instagram.com/TurboKraft
Old 06-08-2012, 03:29 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #19 (permalink)
Registered User
 
Join Date: Apr 2011
Posts: 235
I run a GT3582R 0.82AR turbine with T3 inlet, viand out let and 2" compressor discharge. Open water ports, with EFi and SC cams on otherwise stock motor. 1 bar by 3000rpm, builds strong from 2200rpm. Pulls very hard to 6500 rpm limit. Cams are timed mid to late (1.57 from memory). No oil blowing issues issues at all. Car LOVES the low back pressure exhaust side, lots of low down torque off boost and lovely swelling of torque, not on/off.


I use GSF headers and a F46 tial with .8bar spring and using a turbosmart EBC. I get a little boost spike at 1 bar but no serious creep at my power levels, but know others have with the GSF set up.
very impressed with the turbo though, its killer.

__________________
1988 930: 3.5L 100mm LN slipins, LN FFA rods, Supertec studs, GT3582R with T4 1.07A/R twin scroll housing, RarlyL8 equal length divided headers, dual Tial MVS 38mm WG's, Carrera 3.2 heads with 993 big valves. 964 Cams, full bay IC, KEP st1 clutch. PE3 sequential ECU with 750cc EV14 injectors, CoP twin plugs, J&S Safegaurd, Aquamist HSF3 water inj. Wavetrac LSD.
Old 06-09-2012, 12:24 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 09:08 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 Pelican Parts, LLC - 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.