OK here it is
19.9 psi
216.9 Lb/ft
231 BHP
At that point Scoff reckons she was emptying the float chamber faster than it could fill and starting to lean out.
Nice, what is the actual spec of your set up Russell ?
That's F in good power for a carb! I guess more fuel pressure and maybe a bored out fuel bowl or dare I say it......maybe an injector could yield more bhp.Originally Posted by RussellT
OK here it is
19.9 psi
216.9 Lb/ft
231 BHP
At that point Scoff reckons she was emptying the float chamber faster than it could fill and starting to lean out.
PowerRun.jpg
Forged rods and pistons, lightened and balanced crank and flywheel, large turbo (sorry can't remember the code for it), Rejetted carb, Blitz boost controller, Unique hi flow intercooler, competition clutch. race head with big valves from Prima Racing. Adaptronic ECU wasted spark ignition,
Cam from Engine Dynamics.
Run on Shell V-Power Nitro pump fuel.
Butch has more power and a lighter car (I still have all the carpets in Doris).
Last edited by RussellT; 22-08-2016 at 22:44.
Nice Russell, is your cam anything like a Piper 270 or 285? I am not sure what Engine Dynamics offer in way of a cam.
Re cam sorry I have no idea what the technical details are.
Great power from 1.4 carb'd GTTThat's usually about the ceiling (in terms of both power and psi), for reliable use.
Looking at the power run, 3500 to 5000 must be a massive rush of blood!
Agreed, great result.
Mine is getting mapped in a few weeks and was just interested in way of a comparison.
I'd be happy with your numbers.
Superb result for 20psi, well done
Whats the plan now then? Run "as is" or look into upgrading the fuel supply and try and squeeze out a bit more
I took the throttle body to show Scoff and he just felt we had to move the fuel rail to fit some bigger injectors and it should work. My pit crew have a inlet manifold to work with to help make up the required pipes to fit the TB. That's the easy part then there is the fuel circuit throttle cable, mounting the TBs, moving the coil pack and prob a load of other things I havent thought of. Should be fun! Ill keep you all posted.
Did your conrods hit the liners? I know mine did
turbo code is gt2560 or 200sx s14a turbo
Doris is back in competition!
At a very wet Aintree I gingerly increased tthe gain on the boost controller. Starting at 20% I went up in 10% stages through 2 practice and 2 timed runs. The last run at 50% gain produce 17.2 psi and despite Plowright through rivers and lakes of water Doris managed to post the fastest speed trap time in class at 112 and I ended up second to a lovely Schiroco 1.4 turbo and supercharged engine.
Doris was awesome running like a bullet train, pulling all the way through the finish with a roaring sound track.
I think I can consider her "run in" now.
Do you ever run at Donington Russell? I'd like to come and have a butchers if you race anywhere near me in the calendar (Derby/Burton).
Thanks Trevor sorry we don't go to Donnington it would be great if we did at what has to be one of the very best circuits in the world. Lotion Park in Shropshire is the furthest south I go. I would suggest for a great day out you need an event with Ian Butcher in his mega 5 as well as Doris on a sunny day. Harewood has great spectator viewing with plenty of split times and a commentator. A sunny day at Trac Mon on Anglesey has the most amazing scenery.
The nearest venue to you is Curborough only 10 miles away. rather the opposite to Donnington I don't compete there but Ian does.
Harewood is 90 minutes away from you, straight up the M1.
Last edited by RussellT; 04-09-2016 at 14:47.
Some photos of Doris splashing around Aintree here
http://www.whitedogphotography.co.uk...hp?gall_id=109
and there are more on page 3
Thanks for the info Russell. Yeah, I've not seen any Donington reports from you so I doubted it was part of the calendar. Bum
Ok, perhaps Harewood next season then if it turns out you are both going to be there
Aintree is only half an hour or so from my house, I really need to come and see you next time you're there Russ
Mock up of the proposed plenum chamber.
Proposed plenum.jpg
Plenum from back.jpg
It works out at close to 1.4L just by chance
James5 liked this post
I can see some gaps. I don't think that's going to hold pressure when it's on the car
Work in progress
TB Manifold.jpg
TB from top.jpg
Are housed building this yourself Russ? Love the idea of throttle bodies.
A guy called Andy Harrison at my local garage is fabricating it. I just bounce ideas off him. The latest is a link between the two sides to equalise the pressure and also allow us to fit the one way valves for the breather system and brake servo. It will also add stability.
Pity Scoff at EFI he will have to try and make this monster work.
Matt Cole liked this post
All in a days work for scoff!
Andy at work
I spent an amazing WE on Anglesey. Sat was a wash out. I ran Doris at 12 psi and was just 14 thats FOURTEEN!! seconds behind Keith Minshall in his 306 after 1st practice. I ended up no where but I caught the Clio ahead of me on my driest run. I was offered a rerun but there was no point as the rain had started again and the event was in real danger of hitting the curfew.
The Sunday however was as good a day as sprinting gets. An amazing venue on a warm sunny day. I ran Doris at 17psi and she just flew. The combination of the new head and bigger turbo is nothing short of dramatic. The engine just revs for fun. I was hitting the rev limiter without realising I was at that level of revs. In the past I never got near it as the engine ran out of steam and you automatically went for the next gear. Now its still pulling strong as the limiter kicks in. In fact its sucking fuel so fast that I ran out of fuel with around 20L in the car.
I had a few issues mainly being out of practice a long brake pedal that messed up my heel and toeing and tyres that improved as a layer of grime and old rubber was scrubbed off. In the end, as I got back into the hang of sliding the rear into the corners and despite a cough and a splutter after the long banked right handed hairpin I set a new PB of 106.92 sec for a 3rd place with Keith second to James Kerr who ran a stonking 103 seconds to take 3 seconds off the old record.
If I had any doubts before I know now that this engine demands the throttle body conversion.
Sounds awesome Russell, we need more info and pictures on this throttle body conversion!
Rough finished inlet manifold.
Still a lot to sort out. Ive bought some aluminium sheet to make a plenum chamber with some suitable pipe to make the inlet and exits.
I hope Scoff can source some bigger injectors but I have concerns as the OEM ones have a very specific nozzle shape. Fingers crossed.
Inlet complete.jpg
Coming along nicely.
Have the class rule changes been put in place yet Russell, or is that next year? Will the new inlet alter your class designation? Would it have had the rules not changed??
A standard car class has been added stating that the car has to have been made in quantities over 5000 been made since 2000 and the forced induction multiplier is 1.7.
For my class induction is free and the forced induction multiplier remains at 1.4 (at least for the time being). There was of course a Renault 5 with EFI and no one has been bothered by Ian Butchers 5 GT turbo competing with EFI.
To be honest pots at the end of the year are nice but rather determined by the fortunes or misfortunes of others. Playing with the car, trying to go faster than you have gone before is more exciting.
R
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