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Bolt-on 360 bhp x 330lbft: Phase one started.

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Old Mar 27, 2005 | 09:35 PM
  #541  
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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.
Can't do a green with envy smiley face 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.
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Old Mar 28, 2005 | 06:40 PM
  #542  
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G, you aren't the only one watching the scoop.
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Old Mar 28, 2005 | 08:30 PM
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can't say i've noticed it either







Oooo and you've bought stuff off rich askew aswell

Last edited by flat4; Mar 28, 2005 at 08:34 PM.
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Old Mar 28, 2005 | 09:16 PM
  #544  
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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.
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Old Mar 28, 2005 | 09:48 PM
  #545  
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lol we have veys of making you talk! scoops usually go for stupid money on ebay for some reason
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Old Mar 29, 2005 | 06:03 AM
  #546  
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As in cheap?
There is an Sti8 on Snet @ £90 but they look as if they are off a 70's drag racing Camaro...
Graham.
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Old Mar 29, 2005 | 08:56 AM
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as in expensive saw one go for well over 100 a few weeks back, lets hope im wrong
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Old Mar 29, 2005 | 11:46 AM
  #548  
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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.
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Old Mar 29, 2005 | 11:51 AM
  #549  
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yeah, im not convinced by the STi8 scoops on classics, just looks wrong. just trying to find out a price for them off someone my mate knows
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Old Mar 29, 2005 | 12:21 PM
  #550  
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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
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Old Mar 29, 2005 | 05:02 PM
  #551  
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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.
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Old Mar 29, 2005 | 06:05 PM
  #552  
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Would you benefit from an electronic boost controller then, something like the AVC-R ot Hybrid ... ?
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Old Mar 29, 2005 | 07:09 PM
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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.
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Old Mar 29, 2005 | 07:38 PM
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Graham, for comparison, here's my TD05FE setup by Andy at 1.5->1.4 bar - graphed at scoobyclinic against AFR - shows good fuelling and a steady boost being held.....

Mark

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Old Mar 29, 2005 | 07:41 PM
  #555  
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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.
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Old Mar 29, 2005 | 09:15 PM
  #556  
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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!
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Old Mar 29, 2005 | 09:23 PM
  #557  
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what we need is a windtunnel how much do you reckon McLaren's will be for the day?
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Old Mar 29, 2005 | 09:35 PM
  #558  
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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.
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Old Mar 29, 2005 | 09:45 PM
  #559  
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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
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Old Mar 29, 2005 | 09:58 PM
  #560  
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ive been intrested in a taller scoop for a while but i refuse to pay daft prices for them, and the sti8 ones looks daft IMO

let me know if you find sum cheapness please
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Old Mar 29, 2005 | 10:20 PM
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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.
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Old Mar 29, 2005 | 10:25 PM
  #562  
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Originally Posted by that ebay item
Original Bonnet Scoop height - 40mm / STi 7 Bonnet Scoop height - 65mm approx
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Old Mar 30, 2005 | 06:11 AM
  #563  
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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.
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Old Mar 30, 2005 | 06:16 AM
  #564  
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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
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Old Mar 30, 2005 | 08:01 AM
  #565  
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Have you tried here for your bonnet scoop

http://www.etsracing.com/Page2.html
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Old Mar 30, 2005 | 08:57 AM
  #566  
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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
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Old Mar 30, 2005 | 11:51 AM
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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.
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Old Mar 30, 2005 | 12:13 PM
  #568  
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could look bloody awful though
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Old Mar 30, 2005 | 12:31 PM
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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
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Old Mar 30, 2005 | 12:42 PM
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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.
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