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Old 12 February 2010, 07:06 PM
  #61  
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Originally Posted by Shaun
Their VANOS must of been fubar'd then, if you left them for dead from 90mph!
I left them for dead at 110mph (on the track of course ) and they were trying, must be the dodgy vanos

Tony
Old 12 February 2010, 07:35 PM
  #62  
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Originally Posted by scoobytyson
Can believe it Shaun as my old M3 did 13.3 @ 106mph at pod, where your car should do an 11 dead with the right driver
From that statement Rob you must mean Simon sorry Shaun had to get that one in
Scoobyc as everybody has said before the spec-c straight out of the box is the better car TBH your best bet would be to go out and test drive one.
Old 12 February 2010, 07:49 PM
  #63  
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Sounds as tho you want a spec c as the weight saving is key in performance.The STI weighs an extra 120kg. You would have to have another 60bhp plus in order to be as quick as a standard spec c. You can get the new turbo system from litchfield imports 450bhp. Will probs cost you £3,000 for the turbo and all the work involved.

Scoobytyson went down the singlescroll route your best of asking him how much it cost him if you want to go for single scroll.

Immy
Old 12 February 2010, 10:23 PM
  #64  
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found an m3 which is perfect by the ad. just in budget. going to look tomorrow see if i can further work out what route i want to go next.
Old 13 February 2010, 10:54 AM
  #65  
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Originally Posted by juggers
Sounds as tho you want a spec c as the weight saving is key in performance.The STI weighs an extra 120kg. You would have to have another 60bhp plus in order to be as quick as a standard spec c.
Lots of wrong information on this thread, weight being one of them.

The MY05 JDM STi has an official book curb weight of 1460kg, the 17" version of the Spec C is 1370Kg, so a difference of 90Kg. The 16" version of the spec C is 1340Kg, but that doesnt have a lot of the kit all the road going spec C's you would want to run as a road car have, such as the brembo's, 17" wheels, decent seats and interior etc.

Those are the book weights, my own MY05 JDM STi (the first of the widetrack models with 114.3mm PCD) weighed 1444Kg with 1/4 tank of fuel and all the spares onboard, when i put it on my corner weight scales.

Each model year has differences between the specs, so it's far too simplistic to just lump the cars into brackets of JDM STi v Spec C, you need to look at each year on it's merits. For example the earlier Spec C had a longer wheelbase and more castor than the JDM STi, from MY05 onwards the geometries are the same on both models.

If you are looking for a track oriented car then the Spec C is obviously the better initial choice MY to MY, mainly due to the extra coolers, but thats pretty cheap fodder to replicate. You can save 30kg just by removong the extra crash structure under the front of the car the Spec C has deleted, a simple bolt off job.

There is a lot of kit people in this thread are saying is a benefit of the Spec C, but you will find thats when comparing the car to a Euro/UK spec STi, when you go to a JDM STi most of it is there on the normal JDM STi, such as the 13:1 quickrack.

The better question should really be, how modern a version can i afford and what am i mainly going to use the car for? Personally, i would much rather have an MY05 onwards JDM STi than a pre MY05 Spec C, because you get a better car for the money, the DCCD-A setup differences alone make it a better choice in terms of handling performance, add in the bigger PCD wheels, wider wheels, wider rubber, larger hubs, larger wheel bearings and uprights and it makes a stronger base car too. I personally wouldnt sell my MY05 JDM STi to pay for an equivilent specified MY04 Spec C, i might consider buying an MY05 Spec C, but it would be more of an emotional choice than a practical one when you look at the technical differences and what that means in the real world to me.

So horses for courses, but dont try and bracket all the cars as a simple choice between JDM STi and Spec C, because that doesnt make any sense in the real world, you need to make the choice on use and budget and work out your priorities from there, do some proper research because it's a minefield, as Subaru's always are when you start to try and get a feel for what each model gives you in reality.
Old 13 February 2010, 11:06 AM
  #66  
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Old 13 February 2010, 01:44 PM
  #67  
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John,
Considering the OP is looking at a M3 and EVO's, as well as Scoobs, I suggest he has not got a clue what he wants! EVO or Scoob I can get.... but a BM in the mix as well. You couldn't get more different types of cars.

As regards to vehicle weights, I would much rather have a car that is not lugging around the weight of an extra person all the time, like yours is over mine. It would be like having you and a couple of sandbags strapped on my back everywhere!
Old 13 February 2010, 01:52 PM
  #68  
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Being single i don't have the added weight you sometimes have to lump around. So our car weights in reality are mostly quite the same.

So maybe thats the strap line needed for this thread, if you fancy a partner, get a spec C, happy on your tod get a JDM STi.

Last edited by johnfelstead; 13 February 2010 at 01:54 PM.
Old 13 February 2010, 02:21 PM
  #69  
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Eh? MY05 STi vs MY05 Spec C is a no brainer ... the Spec C is lighter & has a better spec The older the car the better the Spec C is over the STi. Go to a hawkeye & yes there is little difference

TX.

Originally Posted by johnfelstead
I personally wouldnt sell my MY05 JDM STi to pay for an equivilent specified MY04 Spec C, i might consider buying an MY05 Spec C, but it would be more of an emotional choice than a practical one when you look at the technical differences and what that means in the real world to me.

Last edited by Terminator X; 13 February 2010 at 02:23 PM.
Old 13 February 2010, 03:05 PM
  #70  
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yes i am undecided in what i want im just trying to work out what my options might be.

The options are be boring and grow up i.e. m3. Or go full hog subaru with a new age with 450+. Evo would meet the mix for that category too so also an option. plenty of pre-modded evos running big power about for sale on mlr.

m3 would get used for super occasional track day, perhaps 2 a year. scoob would get used probably monthly on track.

So two very different routes. The spec C vs STI option was because i was curious, as modifiying imprezas to cope with track work can be expensive, wanted to know if the "track prep" carried out to the spec C would be cost effective. If we are talking stock cars, or hardcore track TA style then spec C would be the choice. But JDM STI looks like a better purchase under my particular circumstances, should i wish to go down the big power scoob route, and ruled out the evo.

So yes TONS of info in this thread and off you people on here. Still more to learn about each options and lots of thinking. Am on track on 22nd feb so wont be doing anything till after then...
Old 13 February 2010, 03:15 PM
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^^ Did you see the Evo article - Spec C vs M3 vs 911

TX.
Old 13 February 2010, 04:22 PM
  #72  
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ive not. got a linkey?

Seen a youtube video comparing the spec C hawk to the m3 and i think the evo was included in that and a merc amg.
Old 13 February 2010, 04:23 PM
  #73  
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M3 CSL v 911 GT3 v Impreza STi Spec C | Car Group Tests | Car Reviews | evo

this one?
Old 13 February 2010, 04:35 PM
  #74  
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Originally Posted by Terminator X
Eh? MY05 STi vs MY05 Spec C is a no brainer ... the Spec C is lighter & has a better spec The older the car the better the Spec C is over the STi. Go to a hawkeye & yes there is little difference

TX.

Eh? Did you make the effort to read my post properly? If you did then you didn't understand it based on that response. If you still think your response to it makes sense, tell me which bit of my post didnt make sense to you and i'll explain further.

Also, the differences in the spec between the two variants (spec C / JDM STi) between the hawkeye and last of the MY05 blobeye widetrack versions are identical. The only noticabale diference to the relative specs is the hawkeye Spec C adds another 20Kg to it's weight, so the weight difference is now only 70kg on the hawkeye, rather than 90Kg on the MY05 blobeye, plus the spec C now gets the larger rear wing to match the JDM STi, earlier spec C has a small rear wing.
Old 13 February 2010, 04:41 PM
  #75  
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Originally Posted by scoobyc
yes i am undecided in what i want im just trying to work out what my options might be.

The options are be boring and grow up i.e. m3. Or go full hog subaru with a new age with 450+. Evo would meet the mix for that category too so also an option. plenty of pre-modded evos running big power about for sale on mlr.

m3 would get used for super occasional track day, perhaps 2 a year. scoob would get used probably monthly on track.

So two very different routes. The spec C vs STI option was because i was curious, as modifiying imprezas to cope with track work can be expensive, wanted to know if the "track prep" carried out to the spec C would be cost effective. If we are talking stock cars, or hardcore track TA style then spec C would be the choice. But JDM STI looks like a better purchase under my particular circumstances, should i wish to go down the big power scoob route, and ruled out the evo.

So yes TONS of info in this thread and off you people on here. Still more to learn about each options and lots of thinking. Am on track on 22nd feb so wont be doing anything till after then...
Why do you want so much power? It's torque and throttle response that matters on a road car, the twin scroll JDM STi (and spec C) have a lot of torque on tap with a few basic mods and make very quick road cars without spending lots of money on major mods like turbo swaps, they are also pretty much bomb proof in that spec. Have you driven a nicely mapped 400lbft JDM STi or Spec C?
Old 13 February 2010, 04:54 PM
  #76  
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cant imagine 400lbft is achievable without similar bhp i.e. 380/400? which would be new turbo right?

The choice/mention of 450 is mearly an example of my intention with the car. not a scientific or decided choice.. i.e. would be after significantly more than stock power.
Old 13 February 2010, 05:00 PM
  #77  
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You can push high 300's (lbs of torque) on the standard turbo, change the turbo and your easily at 400/400
As John said, its the torque that matters on a road car, they really are totally different to drive than a UK car.

Tony
Old 13 February 2010, 05:15 PM
  #78  
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Originally Posted by scoobyc
cant imagine 400lbft is achievable without similar bhp i.e. 380/400? which would be new turbo right?

The choice/mention of 450 is mearly an example of my intention with the car. not a scientific or decided choice.. i.e. would be after significantly more than stock power.
No, in stock trim you can get around 370BHP, 400lbft from these twin scroll engines with an EcuTek remap, panel filter, fuel pump and exhaust swap, no other mods needed at all. The ECU in these cars is very sophisticated, if the car is mapped by someone who knows what they are doing it's a stunning bit of OEM kit, it has gear dependant maps for example, so you can have full torque in the lower gears which makes it so much quicker than stock and a lot quicker than cars with more power in real world driving conditions.

As an all round package the MY05 JDM STi blobeye is the bargain of the centuary, it's got all the really good stuff on it including the best DCCD-A in terms of chassis balance, the pre MY05 doesnt have the extra sensors for steering position and yaw, the post MY05 has a change of torque split which makes it more understeer biased.

I'm sure some people may think i'm biased because that is what i own, but on a pure technical back to back basis, the MY05 is the best MY to drive, it's got a lovely balance in Auto mode which makes it a very quick cross country piece of kit.
Old 13 February 2010, 06:51 PM
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It didn't make much sense whatever you posted, MY vs MY the Spec C is a lighter better specced car (bar the hawkeye) - do you disagree?

TX.

Originally Posted by johnfelstead
Eh? Did you make the effort to read my post properly? If you did then you didn't understand it based on that response. If you still think your response to it makes sense, tell me which bit of my post didnt make sense to you and i'll explain further.
Old 13 February 2010, 07:48 PM
  #80  
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Yeah the Hawkeye Spec C is the best of the lot!!
Old 13 February 2010, 10:29 PM
  #81  
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^^ Nothing more than a white STi

TX.
Old 14 February 2010, 06:04 AM
  #82  
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Originally Posted by Terminator X
It didn't make much sense whatever you posted, MY vs MY the Spec C is a lighter better specced car (bar the hawkeye) - do you disagree?

TX.
Based on that answer you didnt understand my last post either. It's not just the hawkeye that have the cars very similar, The MY05 Blobeye has the same differences, so yes i disagree with your statement there.

If you are after the best handling option then an MY05 Spec C would be the car to go for, it has a better transmition torque split than the hawkeye, better front diff setup and is lighter, the ECU is also more programable for function because you can use the MegaROM EcuTek coding on the MY05, the hawkeye has a later spec ECU that doesnt have that option.

With regards to the main point you seem to be missing, i'll explain it further.

I said i would rather have an MY05 JDM STi than an MY04 Spec C, that is because of all the significant updates to the chassis that occured on the MY05 cars, it makes for a better base car. Spending more money to go back a step in terms of base spec makes no sense to me, even taking into account the benefits you get from a Spec C.

With regards to comparing an MY05 JDM STi to an MY05 Spec C, the advantages you gain from a Spec C dont outweigh the extra expense of owning one for me and my wants from the car. Not having a Spec C version has allowed me to buy a newer car than i could afford if limiting myself to Spec C versions, and in being able to do that it's given me a big step up in real world usable performance, the benefits of a Spec C for me are not significant.

The point i'm making for the person this thread was opened by, is you can get a stunningly good car for a lot less money if you dont blinker yourself to just having a Spec C, the MY you go for is significant in terms of the cars performance, so be a bit more savy than just selecting the car on it's badge.

The cost of going to a Spec C doesnt add up for me, which is why i said earlier it would be more of an emotional choice than a practical one for me to spend the extra few thousand £ to make that change for the same MY Spec C. It's always nice to have the best specified car in the range, which is why they carry a premium, but i dont need that extra performance for the use i put the car to which is 99% road use, and even when i take it for a run is something like scoobysprint, it's still good enough to beat all the equivilent Spec C's out there and the majority of far more modified cars because of a combination of setting the car up properly and being able to exploit it's performance fairly well.

Hopefully that makes more sense to you now.
Old 14 February 2010, 10:36 AM
  #83  
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Dont see how a MY05 JDM STI is a better option if he's going to do trackdays as the spec c has the right oil cooling system and is much lighter. I have had a 360bhp/370ltb my05 jdm sti and i got spanked by an mr 340. Then i bought a spec c and spanked his mr340 the difference is night and day betwen the standard jdm sti and spec and it is miles quicker on a track. look at this vid the spec c starts from the back to take all.

http://www.streetfire.net/video/Suba...e-VS_75940.htm

John your personal needs maybe different to the op i don't think he's to botherd about having a newer car as it sounds like reliable performance is his objective.

Immy

Last edited by juggers; 14 February 2010 at 10:47 AM.
Old 14 February 2010, 11:05 AM
  #84  
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Sorry. basic question here. Is the JDM STI My05 twin scroll?

But of a crap question but: how does a 400lbft newage compare to a 300 classic? in pure power and power delivery terms?

John is hitting at exactly the question im trying to answer in this question.

For a MY05 JDM sti money you could by only a my03 Spec C. And seems like the My05 in this comparison would be the better choice. Probably not as clearly cut but thats kinda the kinda question i was after.

Cheers for all the info guys
Old 14 February 2010, 11:50 AM
  #85  
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The basic running gear in the MY05 JDM STi is identical to the MY05 Spec C except for the addition of some oil coolers (which are cheap to buy if you felt the need to fit them, that in itself is a debatable point if you keep to stock turbo power levels and are sensible with time out on track), both cars are twin scroll, the JDM STi uses the VF37 turbo which is a sleeve bearing turbo, the Spec C uses a VF36 which is a roller bearing turbo. Both produce the same power/torque but the VF36 spools slightly quicker, you still get 1 BAR boost at 2800rpm with the VF37, it's still very quick to spool.

I've a lot of experience of the various models, i used to own a JDM STi5 Type RA Ltd running a VF28 stock turbo with a good EcuTek remap, that had circa 300BHP/lbft. I've got Delta Dash logs from that so can do a back to back comparison with the MY05 JDM STi. This was pretty much the quickest model of classic at the time, much quicker than a UK spec car with the same power.

The below numbers are at the wheels, not flywheel figures which are much higher of course.

The MY05 JDM STi Road Dyno report says (run in 4th gear)

Maximum Wheel Power: 312.1 BHP @ 5281 RPM
Maximum Wheel Torque: 335.7 LbFt @ 4077 RPM
Power to weight ratio: 198.2 BHP per ton

Terminal velocity due to power: 185.7 mph

In Gear Acceleration:
40 - 60mph = 2.1 seconds
50 - 70mph = 2.1 seconds
60 - 80mph = 2.2 seconds
70 - 90mph = 2.5 seconds

Speed per 1000 RPM:
1st: 5.3 mph
2nd: 8.1 mph
3rd: 11.0 mph
4th: 14.4 mph
5th: 18.2 mph
6th: 22.9 mph

Maximum Speed per Gear:
1st: 43.6 mph
2nd: 66.7 mph
3rd: 90.0 mph
4th: 117.7 mph
5th: 149.2 mph
6th: 188.1 mph

The MY99 JDM STi Type RA Ltd Road Dyno report says (run in 4th gear)

Maximum Wheel Power: 243.2 BHP @ 6198 RPM
Maximum Wheel Torque: 246.5 LbFt @ 4099 RPM
Power to weight ratio: 180.1 BHP per ton

Terminal velocity due to power: 174.1 mph

In Gear Acceleration:
40 - 60mph = 2.5 seconds
50 - 70mph = 2.4 seconds
60 - 80mph = 2.5 seconds
70 - 90mph = 2.8 seconds
80 -100mph = 3.4 seconds

Speed per 1000 RPM:
1st: 5.3 mph
2nd: 7.9 mph
3rd: 10.5 mph
4th: 14.1 mph
5th: 19.6 mph

Maximum Speed per Gear:
1st: 42.0 mph
2nd: 62.9 mph
3rd: 83.9 mph
4th: 112.6 mph
5th: 157.1 mph

So the MY05 JDM STi with basic mods does 40-80MPH in 4.3 seconds, the STi5 TypeRA Ltd with the same basic mods does 40-80MPH in 5 seconds. The MY05 has a peak acceleration of 4.5m/s^2, the MY99 has a peak acceleration of 3.9m/s^2. The overlaid torque curves are hilarious when you consider both cars are so similar on spec updates, the later twin scroll engines are quite stunning.

So from that you can see with the same basic mods, an MY05 JDM STi has a higher power/weight ratio and accelerates faster than an MY99 STi5 Type RA Ltd, it would annihilate a UK spec classic with the same mods.
Old 14 February 2010, 01:05 PM
  #86  
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Wow you have tons of information.

Old 16 February 2010, 12:39 AM
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John.

My point was & is simply that MYxx vs MYxx the Spec C is a lighter better specced car (bar the hawkeye) ... you do seem to agree albeit don't say so in your post I do appreciate your point re the law of diminishing returns though.

I would like to see some video footage of you beating the Spec C's on a track - any links?

TX.
Old 16 February 2010, 02:00 AM
  #88  
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I've got results, will that do.

Scoobysprint round 1, winner of the standard class Scooby Sprint Championship
Scoobysprint round 1, 6th overall, 30 entries
Scooby Sprint Championship
Scoobysprint round 5, winner of the standard class
Scooby Sprint Championship
Scoobysprint round 5, 8th overall, 46 entries
Scooby Sprint Championship

I only entered two rounds due to work commitments, won the class both times, beat plenty of highly modified cars, only Spec C to beat me was too modified for standard class.

Finished the year highest placed standard car in the overall points table, despite missing 3 rounds.
Scooby Sprint Championship

I don't have a video comparing a Spec C to my car, but the scoobysprint organisers did a ghosted video of my car and the Prodrive WRC car. YouTube - ScoobySprint's Channel

Last edited by johnfelstead; 16 February 2010 at 02:02 AM.
Old 16 February 2010, 08:58 AM
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John I know you know your stuff on the subject, but Im afraid I have to disagree on a few points, - call me biased!

-I dont think that the Blobeye Spec C is a better handling car than the Hawkeye Spec C. The Hawkeye torque split & differential is set up better than in the Blobeye, I have driven & witnessed both on track. This opinion is also shared by Subaru Sti developers; Tommi Makinen who helped develop it too & Tshuiya the Jap drift God! The Blobeye diff IMO can be unpredictable (Auto mode) at times & can very quicky throw you into oversteer or bog you down while trying to correct sudden unexcpected oversteer. The video I have found below IMO helps prove this opinion, especially at 3min 55 seconds.

-Also in the video it is interesting to note that the Sti they later compare the Spec C's too is in fact a JDM 2.0 Sti & it was not really that competitive against the Spec C's.

-On the subject of weight, last year at Brands Hatch, 2 of my firends with their Blobeye Spec C's & my Hawkeye Spec C were all weighed & were all exactly the same weight with the same amount of fuel on board.

Subaru invented the Spec C for a reason, i.e WRC homologation & there is a substantial performance difference between it & Std Sti's (JDM or UK). Whether you think its worth the extra money, i.e "extra bang for your buck", is a personal choice & various other factors come into it, such as exclusivity & kudos & depreciation. (Spec C's hold their value far better than std Sti's). I suppose its a bit like asking a Porsche GT3 RS owner if he thought it was worth paying the extra £30k for a over a GT3. But I suppose each persons opinion will not be the same.

YouTube - STI MEGA TEST - STI Fast On Four - Best Motoring International

Last edited by rickya; 16 February 2010 at 09:59 AM.
Old 16 February 2010, 09:54 AM
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Shaun
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John,
You plank! You can't compare your times with someone elses, to compare the cars! But I put money on the fact (as you can drive well) that if you had driven an equal powered/setup Spec C of the same MY (just to be fairer lol), you would of been quicker around the handling circuit in the Spec C. Now whether you, I or the OP thinks that advantage (however big or small) is actually worth the extra cost, is another matter.


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