Graham,

Make sure you get some spectators along with video cameras. I want to see the beast (the car that is) getting some serious abuse

Well done on a cracking project.

Stefan

 

Thanks for the kind words to you all.
Interesting about the torque number, as i was expecting more than 320 (rounding up to make me feel better).

The car as stock always peetered out at 7K+, almost as a soft cut out, but as I have said, happy with the result, and now need to focus on the opposition ahead of me which sounds to be formidable.
3 EVO's and 2 with 450+ and one with 600 x 500 2.2 engine........

There was an Impreza there which I couldn't see run, it had a very modified looking engine, FMIC etc; I wonder what he made in the end?

I'm still on stock (green pad) brakes, but you go faster if you don't press the middle pedal...(or the middle one isn't too good..)

I can still hear that car at full chat..
A journalist drove my 911 at a banked test track a few years ago, and the sight and sound of the car on OPEN unsilenced exhaust at 140 mph diving off the banking onto the straight was of equal measure to a boy racer like me.

Makes up for all the grief. Good job my wife loves motorsport!

I'll soon have nothing else to say...

Graham.

 

How much octane booster did you use on the runs? and would you add more for a hillclimb?

 

Excellent results Graham. You must be well chuffed.

Very inspiring and well documented project.

Maybe enough to get me off my *** and get fit the bits to mine which have been sat around for best part of a year.

Well done mate.

Bob

 

Mark:
I followed the instructions on the bottle!
I think the solution was at max strength, and any more would have saturated the petrol to no benefit.
If the car was a daily driver I would map to Optimax only as the NF is expensive when the journeys are long to the 'event'
The trip to Well Lane took a full tank there and back and about 2/3 of the NF bottle @ £14 a bottle.

Worth the cost to get the most and have some confidence in no det problems.

Bob!
Get on with it!!

Graham.

 

So did it actually make 407bhp on one of the earlier runs then Graham ? Or was someone winding you up
Rich has just clarified on the Well Lane thread that your print off is given from the last run. Might that explain why the torque is low as the top mount intercoolers will be toasting !

Andy

 

It was David Wallis who screamed 407...I acused him of bullsh!tting me at the time.

Ok, so the graphs were the last run, if the TMIC was 'cold' (I had drowned it with the water spray just before the time came to get on the rollers), then the torque could be higher then, the revs the same should = max figures on the 1st/2nd run?

If the TMIC was cooking then everything would down due to the temps yet gave 373 x 320.
If this is correct then the '407' shout was after the third run, maybe the second,
I know the 1st or second was 353bhp according to one of the obsevers.

I can't imagine the car made 407 at any time, but David seems a straight guy! (but I was looking nervous)

Rich commented that he felt it was a 380 run purly by the 'sound' on the rollers. I wouldn't know, just sounded bloody great to me!

Pity there isn't a memory store of all the runs in the RR's pc.

What did you expect of the set-up Andy? (pm if you wish)

Graham.

 

Usually the 1st run gets the headers/turbo up to temperature, 2nd run makes best power and then it tails off each run after that as the heat soak gets to the tmic.
Fmic cars tend to peak then level off (in my experience)

The way the boost profile was during mapping then I would say your 373 result looks fair. If it is now holding the target 1.4 bar to higher rpm however then the 400+ call wouldn't be out the box.
I would have expected torque in the 330-340 range and at lower rpm.

Andy

 

Andy, i watched every single run of Grahams, as i was hoping to compare it to Alans car.

The red and white display with 2 dials, and 2 digital read outs, to the left of the computer were what i was watching.

The 1st run read 357 bhp
2nd run read 353
3rd run read 407
4th run read 394

I relayed those to david, who was stood next to me.

One things for sure, it sounded as smooth as Alans car.

The only snag i had was, whilst sat in Alans car, watching the boost closely, i didnt see the same digital read out, but could read the computer display, and alans car never went over 360 until the final run, but also never went above 1.25/1.3 bar.

The last 2 runs it had me Alan, and Adam sat in the back to stop it slipping.

Rich Wild also confirmed when david asked, "what fuel you running" optimax and 2 bottles of millers.

Steven

 

!
Good grief.
Glad API fitted head studs to the engine when they did the gaskets...

Graham

I think I'll frame this last note.

 

Thanks for that Steven I know which run I'd be quoting
I suspect a number of the higher power cars were slipping on their early runs with cold tyres etc, sounds like Alans was slipping on all its runs ? Rich mentioned to me that the 20G cars sounded like they spooled/revved quicker than the others, certainly wheelspin would also account for the lower boost.

I've suggested to Rich that they may want to try the spray that Star Performance used to use on any car over 300bhp, originally designed for industrial drive belts that are slipping due to low tension or excess wear, it makes the rubber surface very tacky and works a treat on the rollers.

Andy

ps, thats Rich's normal tipple, thats what I mapped it to and thats what he runs every day. I suspect he gets a good deal on it

 

The surface of the rollers were very shiney, this is why I went up there on my soft compound Kumho hill climb tyres to get some grip.
One of my photos shows the rears spinning in a blurr on the rollers and the fronts seemingly stationary...

Just for my ego I'll quote 407 and smile!

We used to use that resin spray on the plastic injection moulding machines' drive belts to stop the squeel.
I always thought that the rollers were gritted surface, but non of the cars I watched were slipping IMHO.
Was a very cold day though.

Graham.

 

407 Nice graham

 

Nice results

Don't you have DCCD Graham? Obviously with the diff open the rears will spin more than the front

Jon.

 

i watched harvey spray the rollers at well lane a while back when jonny gavs monster started spinning its wheels

amazing to see what diffrence a simple spray can make

 

At 407 BHP Graham, you are 1% higher than a 2.5/20G/FMIC/water injection/manifold/3" exhaust setup of mine at Dastek

 

Jon, no dccd in my car, just a simple little old Sti v3!
John, when I went out in Gerry's 2.5 with Andy mapping the other week when mine was set-up the pull was fantastic, but the run I gave my car the day after felt as strong (I thought) and the tyres struggled to grip when pressing on so to speak. I am very used to my car at the 'limit' and it cetainly felt very fast in comparison to before the work started.

The day was very cold on sunday, my jaw was chattering with the cold (fright?) so probably served the right conditions for a blinder.

Maybe it is a good engine, certainly well mapped (Andy is so careful) and the combination of parts 'researched' on here with yours and everyone's help has proven to be a good blend exactly as I had hoped for.

The idea was to have a set of parts that can be transposed to a 2.5 (straight out of the crate) to move the car forward again (with a 6 speeder and slicks)

I am sure it will be tricky to drive flat out on the hills for a while, and I think grip will become an irritation as there are no fancy diffs.

I would like to fit some 8'' wide wheels and 225 section Kumho's but that expense will have to wait.

I also want to treat the old 911 to some brakes and a suspension strip/set-up for some summer cruising just to remind myself what a great car it is(driven slowly..)

Facinating exercise and 407 is a wonderful number to get in the end

Graham.

 

Alan, it wasnt slipping.

 

I was a bit slow, I could have logged Alan and Grahams runs on my laptop, would have proved slippage/boost levels/airflow etc.

Alan's grip level probably wasn't helped by dripping washer bottle fluid after his IC spray exploded (slight exageration for effect).

Andrew...

 

andrew... your allways a bit slow!

Too busy laughing at steven farting in his kids face

 

*opens can of worms* don't forget well lane over read by 30bhp

 

Very true, best leave it alone then...

David - lol.

 

true, we don't do 22b 'discussions' here

 

No!

Leave me to bask in the '407' bubble

The number is not that important. There are so many engineering variables in a RR it isn't worth the hassle. I'm sure they are far from consistant.

It goed like stink, good enough i hope to keep well up in the competition this year.

Graham.

 

Just had the regs through for sprinting Graham and MSA L12.5.1 & L12.5.2 get special mention this year

Need to figure a way round that one.

 

And in english that means ..... ?

 

hill climbing rules and reg's perhaps?


So; when's phase 2 graham?

 

MSA blue book L12.5.1 Block must be identifiable as that fitted to orginal model or an optional extra. L12.5.2 As above or must be of a type produced in greater numbers than 5000 and available through normal commercial channels of vehicle manufactor. (taken from MSA blue book 2004)
I think the second statement - L12.5.2 will allow me to race .i.e. more than 5000 US STi must have been sold.

 

Thanks Mark! Thought it would be something like that ( 2nd one re: 5000 made is a bit like Grp A card IIRC ).

Expected it to say as worse case - no substitute injection system or forced air compressors allowed, so all this work would be banned!

Chrome - yeah . Phase 2 done innit, phase 3 when graham gets bored with just 363 bhp!

 

Pause for thought:

Carman agonised over the '2.5 thing' when he was looking for a car recently.
The 2.5 was/is made in huge numbers in the USA.
The rules are induction etc are 'free' so all the mods are ok.(turbo/injection etc)
The 2.5 is a big 2.0, still 4 pot, still flat 4, still Subaru etc. so OK.
You could NOT fit a turbo flat 6 Legacy engine.

i think a 2.5 turbo JDM/UK Impreza is ok and honest.

Phase 1 was the rework spannering (painful and well over budget)
Phase 2 was the mapping (painless/facinating/less than budget)
Phase 3 is racing it (fun/mega expensive/car killing/frustrating... )

Phase 4 may this, or maybe that, or.....strip and sell!

Just filled in the entries for the year, a huge £1200, about £100 for each event.
Add fuels bacon butties and a few hotels = £2Kish for a fun summer....

Beware!

Graham.

ps: the best RR result was 407 bhp/340 ish lbft = 6 speeder soon.....