Bolt-on 360 bhp x 330lbft: Phase one started.
Originally Posted by 911
The $$ for the 6 speeder are in the kity.
Despite what wizzard Andy says, the 6 speeder is the most practical route I think.
I am very perterbed by yours and MarkA's experience of the AP organic clutch. Surely the assembly should take more than a few 'spirited' sprints and your road miles?
I was mighty impressed by the easy drive you car was, and was taking 'off' the burden of the tool boxes, 2 people etc in assessing my first 2.5 litre experience.
Also impressed you could keep awake through my drivel of a thread!
The old 911 gets back into the garage tomorrow for new brakes and softening-off form competition duty, such a nice 'real' car.
Graham.
Despite what wizzard Andy says, the 6 speeder is the most practical route I think.
I am very perterbed by yours and MarkA's experience of the AP organic clutch. Surely the assembly should take more than a few 'spirited' sprints and your road miles?
I was mighty impressed by the easy drive you car was, and was taking 'off' the burden of the tool boxes, 2 people etc in assessing my first 2.5 litre experience.
Also impressed you could keep awake through my drivel of a thread!
The old 911 gets back into the garage tomorrow for new brakes and softening-off form competition duty, such a nice 'real' car.
Graham.

the MT6 will have to wait (broke as usual
)As for the clutch, I don't know how many miles it had done in mine but I do have a receipt for one from a previous owner. I wondered if it happened whilst travelling backwards on one of my many track day spins and not dipping the pedal early enough.
In my car the 2.5s a lovely drive, mapped to suit my needs, regular use with occassional track days and with a view to some economy. It'd be interesting to feel what an all out power map would be like. I recently bought a Datalogit kit so may ask Andy to do 2 or 3 maps that I can load in myself, if that's possible (waiting for a reply). A couple more mods yet, I don't even have a full 3" exhaust.
Thread is excellent, it's people like you, who give information freely, that makes life that much easier for people like me. This place is a mine of info and I find it inspirational, but expensive
Keep up the good work and thank you.Gerry.
Who are all these bloody spies everywhere?
And Askew isn't rich, he 's gone rallying....
Scoop is exactly what i need, and I suppose you lot do too.
Just no privacy on Snet, or Ebay, or anywhere!
Still, you all missed my bid on my other passion (!)
Graham.
And Askew isn't rich, he 's gone rallying....
Scoop is exactly what i need, and I suppose you lot do too.
Just no privacy on Snet, or Ebay, or anywhere!
Still, you all missed my bid on my other passion (!)
Graham.
So do I.
If so, i will buy a crumped old v3 type and cut/shut/fibre glass it to the full front/back depth to cover the opening for the Sti8 TMIC.
Maybe i should take a plaster mould off it and sell you and others one!
5 days to go.
I'm not looking for a stupidly cheap one, but when people charge 150 for a scoop and a friend has just bought a good 2nd hand Westfield tub for the same, seems a rip-off!
Graham.
If so, i will buy a crumped old v3 type and cut/shut/fibre glass it to the full front/back depth to cover the opening for the Sti8 TMIC.
Maybe i should take a plaster mould off it and sell you and others one!
5 days to go.
I'm not looking for a stupidly cheap one, but when people charge 150 for a scoop and a friend has just bought a good 2nd hand Westfield tub for the same, seems a rip-off!
Graham.
Subaru Tuning Specialist
Joined: Jun 2002
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From: 7.74 @179 mph 1/4 mile - road legal
I may have missed it, have you looked here -
http://www.drmotorsport.co.uk/STi%20...et%20Scoop.htm
£120 and thats painted to match your car, the "Sti7" scoop on the right of the pic doesn't look out of place on the classic IMO. It's really just a 65mm high version of the original scoop.
Andy
http://www.drmotorsport.co.uk/STi%20...et%20Scoop.htm
£120 and thats painted to match your car, the "Sti7" scoop on the right of the pic doesn't look out of place on the classic IMO. It's really just a 65mm high version of the original scoop.
Andy
Thanks Andy.
At the Well Lane day, Rich Wilde had one of the scoops on the ebay we are talking about on a classic there, and it looked realy 'right'.
I'm just too mean to pay a fortune for very little in this case.
My engine still wont hold 1.4 across the whole rev range Andy, care to ponder why?
I'm wondering if a new back box would be a good idea?
Graham.
At the Well Lane day, Rich Wilde had one of the scoops on the ebay we are talking about on a classic there, and it looked realy 'right'.
I'm just too mean to pay a fortune for very little in this case.
My engine still wont hold 1.4 across the whole rev range Andy, care to ponder why?
I'm wondering if a new back box would be a good idea?
Graham.
Yeah, i have to say Daves one is a close second for me to Stuart Knights taller MY97-00 one. What am i saying? I should be taking bits off not putting them on..... 
STi8 on a classic does look poo IMO.

STi8 on a classic does look poo IMO.
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From: All over the place, trying to stop putting the miles on!
Has anyone done any quantative testing to see what difference in inlet temps a larger scoop makes?
I was considering one of the drmotorsport Sti7 scoops for my car, £120 didn't seem that bad considering it was sprayed to match your car already.
Dan.
I was considering one of the drmotorsport Sti7 scoops for my car, £120 didn't seem that bad considering it was sprayed to match your car already.
Dan.
Everyone:
No idea why the boost drops off after 5K rpm to about 1.2 bar from 1.4
Andy and I thought it was the big downpipe cat fitted, but I changed that for my 3'' Magnex decat just before Well Lane.
As the car ran 407 bhp things can't be that bad?
As to the scoop.
It is a shame to have that BIG TMIC only to have about 20% masked-off by the scoop/bonnet. On the other hand, all that air gets concentrated over the exposed fins so chilling that area more (?)
Was the big scoop a marketing thing or a performance thing from Subaru?
Graham.
Just been well outbid on ebay so will wait and see where that goes to!
No idea why the boost drops off after 5K rpm to about 1.2 bar from 1.4
Andy and I thought it was the big downpipe cat fitted, but I changed that for my 3'' Magnex decat just before Well Lane.
As the car ran 407 bhp things can't be that bad?
As to the scoop.
It is a shame to have that BIG TMIC only to have about 20% masked-off by the scoop/bonnet. On the other hand, all that air gets concentrated over the exposed fins so chilling that area more (?)
Was the big scoop a marketing thing or a performance thing from Subaru?
Graham.
Just been well outbid on ebay so will wait and see where that goes to!
No need for the tunnel, just looking for a baking tray to make a scoop from.
Would you believe my old company actually had a wind tunnel which would be perfect for the job!
Still, long gone now (to the Germans!)
Is the Sti7 scoop in these fibreglass replicas taller than the stock scoop?
Graham.
Would you believe my old company actually had a wind tunnel which would be perfect for the job!
Still, long gone now (to the Germans!)
Is the Sti7 scoop in these fibreglass replicas taller than the stock scoop?
Graham.
Graham
If boost drops at 5000 rpm on, it could be several things?
Wastegate opening prematurely ( weak actuator / preloading, or getting to open signal too early ) or just a poor seal of wastegate penny to turbo body allowing it to blow by? Try tightening the wastegate linkage rod, although a new turbo should be fine.
Turbo running out of puff .. although that turbo should be fine?
Excessive back pressure at turbo .. does it need porting on outlet or larger outlet/downpipe? Cat d/pipe wouldn't help as you thought / found. Was map tweaked after the change to magnex d/pipe before well lane but after Andy.F session?
Some hold up / back pressure in TMIC/pipework post turbo? Can the TMIC/hoses flow the air you need for high boost at high revs?
Is the PFC pulling back the boost after 5000 rpm due to some problem it sees ( see above, was it holding back due to cat ? Exhaust gas temps if it has the sensor? MAP sensor issues / near fuel cut? ).
Leak on dump valve at full boost and higher revs? Or other post turbo pipework?
Not sure if any/all these could apply but may be worth a look?
Hope you get it sorted.
Neil
If boost drops at 5000 rpm on, it could be several things?
Wastegate opening prematurely ( weak actuator / preloading, or getting to open signal too early ) or just a poor seal of wastegate penny to turbo body allowing it to blow by? Try tightening the wastegate linkage rod, although a new turbo should be fine.
Turbo running out of puff .. although that turbo should be fine?
Excessive back pressure at turbo .. does it need porting on outlet or larger outlet/downpipe? Cat d/pipe wouldn't help as you thought / found. Was map tweaked after the change to magnex d/pipe before well lane but after Andy.F session?
Some hold up / back pressure in TMIC/pipework post turbo? Can the TMIC/hoses flow the air you need for high boost at high revs?
Is the PFC pulling back the boost after 5000 rpm due to some problem it sees ( see above, was it holding back due to cat ? Exhaust gas temps if it has the sensor? MAP sensor issues / near fuel cut? ).
Leak on dump valve at full boost and higher revs? Or other post turbo pipework?
Not sure if any/all these could apply but may be worth a look?
Hope you get it sorted.
Neil
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From: All over the place, trying to stop putting the miles on!
Graham the replica STi 7 scoop is quite a bit bigger than the stock one, Andy was using one with his custom TMIC on his car.
Dan.
Dan.
Neil:
I had thought of about 50% of the above! Those are good ideas.
There was no adjustment to the map after the change from Cat to deCat.
I shortened the act rod about 6mm after the mappping to 'seal' the penny as suggested by Andy the night before going to Well Lane.
The fix is to have a remap in the summer when Andy is closer to the Midlands and see.
I'm fitting a boost guage so I can see if the boost is there at revs. My wife and daughter have trouble clocking the boost reading at 5,6,7, 8K rpm in third, wife's scared, daughter loves it too much
The turbo is a n AndyF reworked one so i think it is fine internally. My money is on the map details.
At least this way the gearbox is having a slightly easy time.
Thanks for the thoughts again
Graham.
I had thought of about 50% of the above! Those are good ideas.
There was no adjustment to the map after the change from Cat to deCat.
I shortened the act rod about 6mm after the mappping to 'seal' the penny as suggested by Andy the night before going to Well Lane.
The fix is to have a remap in the summer when Andy is closer to the Midlands and see.
I'm fitting a boost guage so I can see if the boost is there at revs. My wife and daughter have trouble clocking the boost reading at 5,6,7, 8K rpm in third, wife's scared, daughter loves it too much

The turbo is a n AndyF reworked one so i think it is fine internally. My money is on the map details.
At least this way the gearbox is having a slightly easy time.
Thanks for the thoughts again

Graham.
Kev:
I think i will find a duff stock scoop and cut an shut it forwards and upwards and glass in the gaps.
Cutting the sides at an angle will allow the front area to increase and allow the leading edge of the scoop to come forwards about 50mm so exposing the front of the TMIC fin pack but cutting the alloy bonnet back (ouch!).
A little project!
Graham
I think i will find a duff stock scoop and cut an shut it forwards and upwards and glass in the gaps.
Cutting the sides at an angle will allow the front area to increase and allow the leading edge of the scoop to come forwards about 50mm so exposing the front of the TMIC fin pack but cutting the alloy bonnet back (ouch!).
A little project!
Graham
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From: 2010 Time Attack Club Pro Champion - Powered by ScoobyClinic
Graham, you'll never guess what i was thinking of while i was lying in bed last night
i've got a spare scoop lying about and was thinking of butchering the 2 together somehow and making the hole in the bonnet a bit larger to get a bit more air to the front & rear of the IC.....and a splitter in there for good measure
i've got a spare scoop lying about and was thinking of butchering the 2 together somehow and making the hole in the bonnet a bit larger to get a bit more air to the front & rear of the IC.....and a splitter in there for good measure
Hep; Thanks for that. There is some good basic material to work from!
AndyF has the Sti7 one...but...
Kev, that is exactly what i want to do. I need to open the base out to reveal the fin pack of the TMIC totally and bring the leading lip forwards and 10mm/15mm up to increase the open frontal area.
The scoop on ebay is right for that.
There are other MY97 scoops for sale there which at £30 would make a good basis for cut n shut.
Determined to do this mod now.
Kev, you need to dream about other things!
Graham.
AndyF has the Sti7 one...but...
Kev, that is exactly what i want to do. I need to open the base out to reveal the fin pack of the TMIC totally and bring the leading lip forwards and 10mm/15mm up to increase the open frontal area.
The scoop on ebay is right for that.
There are other MY97 scoops for sale there which at £30 would make a good basis for cut n shut.
Determined to do this mod now.
Kev, you need to dream about other things!
Graham.
I would think that splitting the air, to divide onto the sections of the i/c would be important too - i.e. making sure that it doesn't all end up at the back - I know that some scoops have a single splitter, but how about splitting the air into 3 sections with the larger scoop ?
Also, have you tilted the I/C at all ?
I guess also that you need to ensure that there is no path for air to flow around the i/c - all must go through it, otherwise it'll take the path of least resistance....
Mark
Also, have you tilted the I/C at all ?
I guess also that you need to ensure that there is no path for air to flow around the i/c - all must go through it, otherwise it'll take the path of least resistance....
Mark
Get me a mint standard scoop in Reddish Blue (my car's colour) and I'll let you have my Carbon Fibre Sti7/8 style thing which is about 40mm higher than standard for 30 quid
Last edited by Tim W; Mar 30, 2005 at 03:49 PM.






