Notices
ScoobyNet General General Subaru Discussion

400BHP on a top mount?

Thread Tools
 
Search this Thread
 
Old Jun 10, 2013 | 08:44 AM
  #1  
Gear Head's Avatar
Gear Head
Thread Starter
Scooby Regular
iTrader: (2)
 
Joined: Apr 2004
Posts: 15,029
Likes: 0
From: Somewhere in Kent, sniffing some V-Power
Default 400BHP on a top mount?

http://www2.autotrader.co.uk/classif.../sti?logcode=p

Seller reckons top mounts are good for 500bhp as well!

Shame because it looks like a motor. I just wish people wouldn't bullsh*t about the power.


(Monday rant over!)
Reply
Old Jun 10, 2013 | 08:47 AM
  #2  
banny sti's Avatar
banny sti
Scooby Senior
20 Year Member
Liked
iTrader: (68)
 
Joined: Oct 2004
Posts: 16,600
Likes: 24
From: Type R
Default

Think you might struggle to get 400bhp on a classic airbox too
Reply
Old Jun 10, 2013 | 08:51 AM
  #3  
Gear Head's Avatar
Gear Head
Thread Starter
Scooby Regular
iTrader: (2)
 
Joined: Apr 2004
Posts: 15,029
Likes: 0
From: Somewhere in Kent, sniffing some V-Power
Default

I am looking for a nice classic again so I sent him a message asking if the power is more likely to be around 330-340bhp (what I understand to be the limit of the classic top mount). He responded saying that he has seen many imprezas running 500bhp on standard top mounts. He also said it was running a SC40 TD18G turbo.
Aren't these two completely different units?

At that point I decided to look elsewhere.
Reply
Old Jun 10, 2013 | 08:53 AM
  #4  
Tidgy's Avatar
Tidgy
Scooby Regular
 
Joined: Sep 2004
Posts: 23,118
Likes: 150
From: Notts
Default

sc40 is a td05, think its an early doors one though.

speak to kev at clinic, he'll be able to advise.
Reply
Old Jun 10, 2013 | 11:15 AM
  #5  
V9 STi's Avatar
V9 STi
Scooby Regular
iTrader: (1)
 
Joined: Aug 2012
Posts: 57
Likes: 0
From: County Durham
Default

You would get close to 400 on an newage STi top mount, but not on that.

As above, standard airbox would be the limiting factor before you started to worry the IC anyway.

Does appear to be in decent condition for its age though.
Reply
Old Jun 10, 2013 | 12:10 PM
  #6  
Tidgy's Avatar
Tidgy
Scooby Regular
 
Joined: Sep 2004
Posts: 23,118
Likes: 150
From: Notts
Default

Originally Posted by V9 STi
You would get close to 400 on an newage STi top mount, but not on that.

As above, standard airbox would be the limiting factor before you started to worry the IC anyway.

Does appear to be in decent condition for its age though.

you'll get 400 on a hawker sti top mount

but temps will be very high
Reply
Old Jun 10, 2013 | 12:31 PM
  #7  
The Trooper 1815's Avatar
The Trooper 1815
18 June 1815 - Waterloo
iTrader: (31)
 
Joined: Dec 2004
Posts: 19,156
Likes: 15
From: To the valley men!
Default

Originally Posted by V9 STi
You would get close to 400 on an newage STi top mount, but not on that.

As above, standard airbox would be the limiting factor before you started to worry the IC anyway.

Does appear to be in decent condition for its age though.
Standard airbox works fine on a CS 400 and the 400+bhp Litcho hatch. But agree beyond that and the suction would eat the panel filter.
Reply
Old Jun 10, 2013 | 02:06 PM
  #8  
Shaun's Avatar
Shaun
Scooby Regular
25 Year Member
Liked
 
Joined: Mar 2000
Posts: 8,619
Likes: 24
From: 5 beats 4 - RS3 Rulez!!!
Default

I believe the Classic inlet is more restrictive than the Newage set-up and that is what would contribute to any limitations on airflow and ultimate BHP attained.
Reply
Old Jun 10, 2013 | 02:49 PM
  #9  
The Trooper 1815's Avatar
The Trooper 1815
18 June 1815 - Waterloo
iTrader: (31)
 
Joined: Dec 2004
Posts: 19,156
Likes: 15
From: To the valley men!
Default

Yes mate. Back to the OP, the car ow er ate too many blue Smarties before writing the advert.
Reply
Old Jun 10, 2013 | 03:01 PM
  #10  
tubbytommy's Avatar
tubbytommy
BANNED
iTrader: (20)
 
Joined: Mar 2010
Posts: 16,950
Likes: 1
From: crawley :)
Default

Standard top mounts are for pikeys.
Why would you build a 400bhp car with a top mount??
Might as well run wrx brakes too.
Reply
Old Jun 10, 2013 | 03:04 PM
  #11  
banny sti's Avatar
banny sti
Scooby Senior
20 Year Member
Liked
iTrader: (68)
 
Joined: Oct 2004
Posts: 16,600
Likes: 24
From: Type R
Default

Originally Posted by tubbytommy
Standard top mounts are for pikeys.
Why would you build a 400bhp car with a top mount??
Might as well run wrx brakes too.

, dont let John Felstead hear you say that about top mounts
Reply
Old Jun 10, 2013 | 03:08 PM
  #12  
ditchmyster's Avatar
ditchmyster
Scooby Regular
iTrader: (7)
 
Joined: Dec 2007
Posts: 13,624
Likes: 7
From: Living the dream
Default

[QUOTE=tubbytommy;11115976 Might as well run wrx brakes too.[/QUOTE]

Funny you should say that because it looks like it has 2 pot sliders on the front.
Reply
Old Jun 10, 2013 | 03:11 PM
  #13  
Gear Head's Avatar
Gear Head
Thread Starter
Scooby Regular
iTrader: (2)
 
Joined: Apr 2004
Posts: 15,029
Likes: 0
From: Somewhere in Kent, sniffing some V-Power
Default

Originally Posted by ditchmyster
Funny you should say that because it looks like it has 2 pot sliders on the front.
Wow, you have good eyes.
I thought the STI 4 MY1998 can with 4 pots?
Mine did anyway.
Reply
Old Jun 10, 2013 | 03:16 PM
  #14  
MattyB1983's Avatar
MattyB1983
Scooby Regular
iTrader: (51)
 
Joined: Jul 2010
Posts: 12,716
Likes: 46
From: Around
Default

The car in the link is a my96. 4 pots started on the 97 V3 cars.
Reply
Old Jun 10, 2013 | 03:19 PM
  #15  
MattyB1983's Avatar
MattyB1983
Scooby Regular
iTrader: (51)
 
Joined: Jul 2010
Posts: 12,716
Likes: 46
From: Around
Default

Having said that, the car is a V3 by the looks of it. Thought that should have the better front brakes....
Reply
Old Jun 10, 2013 | 03:28 PM
  #16  
banny sti's Avatar
banny sti
Scooby Senior
20 Year Member
Liked
iTrader: (68)
 
Joined: Oct 2004
Posts: 16,600
Likes: 24
From: Type R
Default

Defo a V3 so should have subaru 4 pots (which are still pretty poor)
Reply
Old Jun 10, 2013 | 03:48 PM
  #17  
urban's Avatar
urban
Scooby Regular
iTrader: (1)
 
Joined: Mar 2002
Posts: 12,566
Likes: 1
From: Never you mind
Default

The effectiveness of the OE intercoolers varies throughout the years. The early 93-96 slanty type will limit power to around 310 bhp whilst the 99-00 can run to around 330 bhp. The STI MY01 onwards is capable of over 450bhp with an appropriately sized turbo
As written by Mr Forrest
Reply
Old Jun 10, 2013 | 04:04 PM
  #18  
chopperman's Avatar
chopperman
Scooby Regular
 
Joined: Dec 2010
Posts: 3,241
Likes: 0
Default

Originally Posted by Tidgy
you'll get 400 on a hawker sti top mount

but temps will be very high
Yeah, i think you can get 420-430 from the Hawk sti top mount if its only for short bursts of power (road car) rather than held on boost for long periods (track car).
Reply
Old Jun 10, 2013 | 04:24 PM
  #19  
Tidgy's Avatar
Tidgy
Scooby Regular
 
Joined: Sep 2004
Posts: 23,118
Likes: 150
From: Notts
Default

Originally Posted by chopperman
Yeah, i think you can get 420-430 from the Hawk sti top mount if its only for short bursts of power (road car) rather than held on boost for long periods (track car).



and temps were climbing fast
Reply
Old Jun 10, 2013 | 04:28 PM
  #20  
peter zippy reid's Avatar
peter zippy reid
Scooby Regular
iTrader: (25)
 
Joined: Jan 2010
Posts: 3,685
Likes: 11
From: Hamilton scotland
Default

I have 414bhp on my 05sti with tmic i think its time for fmic
Reply
Old Jun 10, 2013 | 04:32 PM
  #21  
Gear Head's Avatar
Gear Head
Thread Starter
Scooby Regular
iTrader: (2)
 
Joined: Apr 2004
Posts: 15,029
Likes: 0
From: Somewhere in Kent, sniffing some V-Power
Default

So, back to my original question - no you can't get 400bhp on a standard classic top mount!

Reply
Old Jun 10, 2013 | 08:14 PM
  #22  
wrx271's Avatar
wrx271
Scooby Regular
iTrader: (1)
 
Joined: Mar 2007
Posts: 394
Likes: 0
Default

Originally Posted by Gear Head
So, back to my original question - no you can't get 400bhp on a standard classic top mount!

No but you must have known that with 11k posts
Reply
Old Jun 11, 2013 | 03:18 PM
  #23  
RenegadeWRX's Avatar
RenegadeWRX
Scooby Newbie
 
Joined: May 2013
Posts: 28
Likes: 0
From: Landstuhl
Default

Yeah the stock TMICs aren't good for over 350WHP better yet nothing over 22 psi from a turbo either.. If the design was a bit more strong like welded end tanks it would hold up to higher psi turbos.

I was coming in here unsure of the actual topic since I am pushing 380 WHP on an Extreme Turbo Systems TMIC and I need more fuel to get my setup to 450 WHP which will just about max out the turbo I'm running.

You can get 600+WHP out of a TMIC if you run meth injection to keep temps down.
Reply
Old Jun 11, 2013 | 03:27 PM
  #24  
thenewgalaxy's Avatar
thenewgalaxy
Scooby Regular
15 Year Member
 
Joined: Oct 2008
Posts: 3,302
Likes: 13
From: Lancuntshire
Default

Originally Posted by The Trooper 1815
Standard airbox works fine on a CS 400 and the 400+bhp Litcho hatch. But agree beyond that and the suction would eat the panel filter.
Having spoken in reasonable depth with Cosworth's development partner about the upgrades available they basically said that the three big issues with getting the original power out of the car involved the air box, turbo and TMC - Subaru wanted these to remain as standard as possible for servicing reasons. Which is why the proposed upgrade will basically be uprating these and then the crank.

So how that chap reckons a '96 classic manages 400bhp with that tiddler of an intercooler is quite beyond me!
Reply
Old Jun 11, 2013 | 04:40 PM
  #25  
The Trooper 1815's Avatar
The Trooper 1815
18 June 1815 - Waterloo
iTrader: (31)
 
Joined: Dec 2004
Posts: 19,156
Likes: 15
From: To the valley men!
Default

Blue Smarties!
Reply
Old Jun 11, 2013 | 04:49 PM
  #26  
MattyB1983's Avatar
MattyB1983
Scooby Regular
iTrader: (51)
 
Joined: Jul 2010
Posts: 12,716
Likes: 46
From: Around
Default

Originally Posted by RenegadeWRX

You can get 600+WHP out of a TMIC if you run meth injection to keep temps down.
600+ horse power at the wheels on a top mount ????

Last edited by MattyB1983; Jun 11, 2013 at 05:34 PM.
Reply
Old Jun 11, 2013 | 04:51 PM
  #27  
kev1's Avatar
kev1
Scooby Regular
iTrader: (2)
 
Joined: Aug 2004
Posts: 392
Likes: 0
Default

Originally Posted by The Trooper 1815
Standard airbox works fine on a CS 400 and the 400+bhp Litcho hatch. But agree beyond that and the suction would eat the panel filter.
My CS400 has a CAI all CS 400s had these didn't they? Def no panel filter in mine or the other 2 I've looked at.
Reply
Old Jun 11, 2013 | 04:51 PM
  #28  
tubbytommy's Avatar
tubbytommy
BANNED
iTrader: (20)
 
Joined: Mar 2010
Posts: 16,950
Likes: 1
From: crawley :)
Default

Originally Posted by MattyB1983
600+ brake horse power at the wheels on a top mount ????
A wrx slanty one dont yah know.
also 2 pot slidey calipers are good enough for 24hrs of le mans with uprated pads.....
Reply
Old Jun 11, 2013 | 05:06 PM
  #29  
chopperman's Avatar
chopperman
Scooby Regular
 
Joined: Dec 2010
Posts: 3,241
Likes: 0
Default

Originally Posted by MattyB1983
600+ brake horse power at the wheels on a top mount ????
Don't want to be pedantic but it wouldn't be "brake" horse power if its at the wheels. The "brake" in BHP comes from the device called a crank brake used to measure the power at the crank.
Reply
Old Jun 11, 2013 | 05:10 PM
  #30  
legacy_gtb's Avatar
legacy_gtb
Scooby Regular
iTrader: (3)
 
Joined: Jun 2007
Posts: 1,337
Likes: 0
Default

If you had a big enough meths tank in the boot and a large enough injection system, in theory you could get 1000bhp with no intercooler at all ..... but its not exactly practical is it!
Reply



All times are GMT +1. The time now is 12:19 AM.