The Subaru SVX World Network   SVX Network Forums
Live Chat!
SVX or Subaru Links
Old Lockers
Photo Post
How-To Documents
Message Archive
SVX Shop Search
IRC users:
SVXBot

Go Back   The Subaru SVX World Network > SVX Main Forums > MOD Mania > Proven Engine Enhancements

Reply
 
Thread Tools Display Modes
  #1  
Old 05-02-2019, 01:20 AM
Dessertrunner's Avatar
Dessertrunner Dessertrunner is offline
Registered User
 
Join Date: Jul 2005
Location: Griffith NSW
Posts: 2,158
SVX with ITB

AS the title says I have the car running with ITB just need to head to the dyno for tuning then head to the race track.

https://www.youtube.com/watch?v=FXy0IyAwy8Q
__________________
1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.

Last edited by Dessertrunner; 05-02-2019 at 02:38 AM.
Reply With Quote
  #2  
Old 05-02-2019, 06:20 AM
RallyBob's Avatar
RallyBob RallyBob is offline
Registered fabricator
 
Join Date: Feb 2008
Location: Pleasant Valley, CT
Posts: 277
Re: SVX with ITB

Quote:
Originally Posted by Dessertrunner View Post
AS the title says I have the car running with ITB just need to head to the dyno for tuning then head to the race track.

https://www.youtube.com/watch?v=FXy0IyAwy8Q
Nice throttle response! Curious about the power changes with this setup.

What size throttle plates are you running?
__________________
Bob Légère

EG33 Impreza tweaks
Reply With Quote
  #3  
Old 05-02-2019, 10:48 AM
SoCoNoHa's Avatar
SoCoNoHa SoCoNoHa is offline
H6 Fanatic
 
Join Date: Nov 2016
Location: Southern NH
Posts: 60
Registered SVX
Re: SVX with ITB

Please please please tell me the stacks will protrude from the hood!? That would look so badass!

Great job, are you running aftermarket engine management? I don't see a MAF...

Can't wait to see video of you tearing up the track!
__________________
1992 SVX LS-L Pearl White - 5MT
Custom Short Throw/Group N trans mount
===
1995 Impreza 2DR
2002 Impreza 2.5RS
Reply With Quote
  #4  
Old 05-03-2019, 02:53 AM
Dessertrunner's Avatar
Dessertrunner Dessertrunner is offline
Registered User
 
Join Date: Jul 2005
Location: Griffith NSW
Posts: 2,158
Re: SVX with ITB

Quote:
Originally Posted by RallyBob View Post
Nice throttle response! Curious about the power changes with this setup.

What size throttle plates are you running?
Hi Bob,
Running 45 mm have even considered going down to 42 mm. Right now I expect peak torque around 7,500 rpm.
__________________
1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
Reply With Quote
  #5  
Old 05-03-2019, 02:55 AM
Dessertrunner's Avatar
Dessertrunner Dessertrunner is offline
Registered User
 
Join Date: Jul 2005
Location: Griffith NSW
Posts: 2,158
Re: SVX with ITB

Quote:
Originally Posted by SoCoNoHa View Post
Please please please tell me the stacks will protrude from the hood!? That would look so badass!

Great job, are you running aftermarket engine management? I don't see a MAF...

Can't wait to see video of you tearing up the track!
I am running a Link ECU and the maps are based On TPS & rpm.

The stacks will be inside a air filter box so not visible.
__________________
1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
Reply With Quote
  #6  
Old 05-03-2019, 11:01 AM
svxnavyvet svxnavyvet is offline
Registered User
 
Join Date: May 2017
Location: Edwall washington
Posts: 77
Registered SVX
Re: SVX with ITB

Did you go with larger valves +1mm?
Reply With Quote
  #7  
Old 05-03-2019, 01:36 PM
Dessertrunner's Avatar
Dessertrunner Dessertrunner is offline
Registered User
 
Join Date: Jul 2005
Location: Griffith NSW
Posts: 2,158
Re: SVX with ITB

Standard diameter valve, here is the spec
Okay its spec's,

Standard bearings,

High grade rods from Spool,

Pistons are 11.5 ; 1 made by CP in the USA,

Valves longer by Supertech,

Solid buckets,

Matt's high lift cams,

IVO 6 BTDC IVC 40 ABDC

EVO 50 BBDC EVC 9 ATDC

ITB 45 mm diameter, head average area 46 mm. Distance from bell to intake valve is 400 mm. Expect max torque at 8,000 rpm.

Volume in ITB including head is 0.64 litres and the cylinder capacity is 0.55 litre

Injectors are 550 cc ( which maybe too small) we have 860 cc and 1,000 cc if needed.

Have refitted Matts extractor pipes they are 3 into 1. 42 mm ID from engine then join 3 into 1 pipe which is 55 mm ID which is 900 mm from the manifold. Were the pipes join together there is a single pipes per side and they are 60 mm ID all the way to the back.

Peak piston speed at 9,000 rpm will be 22.5 m/sec, which is about the same as most 4 AGE's at 8,000 rpm. If we run to 11,000 we will be more inline with most race engines at 27.5 m/sec.

Engine tune table is TPS and rpm,

Brakes get vacuum from a electric vacuum pump.
__________________
1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
Reply With Quote
  #8  
Old 05-04-2019, 08:29 AM
Huskymaniac's Avatar
Huskymaniac Huskymaniac is offline
Uses the ignore feature
 
Join Date: Jul 2010
Location: Corning, NY
Posts: 1,796
Registered SVX
Re: SVX with ITB

Old school. Took this pic at the Ferrari Museum in Maranello.

__________________
Tony

1996 Subaru SVX LSi, 149,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 5W50 FS (2qt) and 5W30 High Mileage (5qt) Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, StopTech Cross Drilled Front and Rear Rotors, Akebono ProACT Brake Pads
2005 Acura RL, 137,XXX miles, Redline D4 ATF with Lubegard Platinum Protectant, Mobil 1 5W20 High Mileage Extended Performance Oil
2009 Toyota Venza, 88,XXX, Mobil 1 5W30 High Mileage Oil

Last edited by Huskymaniac; 05-04-2019 at 08:33 AM.
Reply With Quote
  #9  
Old 05-04-2019, 09:28 AM
wdb wdb is offline
dances with roads
 
Join Date: Feb 2010
Location: Pennsylvania
Posts: 487
Registered SVX
Re: SVX with ITB

Sounds downright wicked!
__________________
2007 BMW 328i Cabriolet
2007 BMW Z4 M Coupe
2012 Tacoma 4wd v6 Access Cab
2011 Lexus GS350 AWD
2005 STi - totaled after 10 great years
1994 SVX LSi 5spd - sold but not forgotten
2008 Honda Fit - hailed to death
2000 Legacy GT 5spd sedan - gone after 150K miles of bliss
Reply With Quote
  #10  
Old 05-04-2019, 12:00 PM
svxnavyvet svxnavyvet is offline
Registered User
 
Join Date: May 2017
Location: Edwall washington
Posts: 77
Registered SVX
Re: SVX with ITB

Thanks for the update on the engine spec's
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 02:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
© 2001-2015 SVX World Network
(208)-906-1122