needles
Turbo Mini Forums

anybody know what the code is for a 1275 turbo 15psi needle
atm i have a BDD dunno if thats any good
also if im in the wrong section, thats my bad, im sorry

thanks
jack

Jack Jones

BDD is the standard Turbo needle. You'll be extremely lucky to get an off the shelf needle that is spot on, the only way to get the fuelling right is to modify your own with the help of a wideband lambda, or take it to a rolling road & tailor one there.

WWW.TURBO-MINI.COM

What he said!

In the 13's at last!.. Just

Avonbar advertise a 15psi needle

http://www.avonbar.com/product/?pid=5771

This will maybe get somewhere close. But remember it's based on whatever engine they used which might not be the same as yours. So even if you use this, I'd still advise fitting some form of Lambda or get a RR session.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

I have a BDK needle that im looking to swap for a BDD.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


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Split Rims? - http://www.force-racing.co.uk/

a friend of mine has the 15psi needle from avonbar and supposedly his mini is quick, purple_mini_racer looks after it and he has had some quick cars, he said he roeckons it will be around 150bhp judging on how well it went, does this sound right (just a 1275 turbo, running intercooler and obviously 15 psi of boost)

didnt know if it had a code
if there isnt a code i will just have to get it from avonbar
thanks ppl

Jack Jones

not meaning to be funny mate, but this isnt minifinity

as they others say, but you dont seem to want to accept, a rr or wideband is the ONLY way to know for sure

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

sorry mate,
i totally accept thats the way to do it, the only problem is im not rich,
im on a pants wage and i just want to get the best i can afford. both of my minis will be rr tuned when they are in a suitable condition and i have the funds
thanks for your input though, is taking into thoughts

Jack Jones

The Avonbar needles are adjusted BDD's so if the engine was at 15psi when you got it maybe it was an Avonbar 15psi..would still be stamped BDD. only way to find out is to measure it and compare to a standard BDD..though Avonbar do not publish the grind.

Either way as the others have said even a Avonbar 10,12,15psi is a best a guess because it all depends on your particular engine tune, CR, what Turbo you have etc.etc the only way is to have set it up at a r/r or do it yourself. with a wideband.

Terry

Edited by Turbo Tel on 27th Oct, 2008.

website:- http://www.terryhunt.co.uk

Without a RR sesion to iron out your set-up I would leave that mod on the shelf. Fitted a high boost needle to mine and it has to be the second worst thing ive done after fitting those stupid coil spring replacements for the rubber cones. If you start messing with the carb your gonna mess things up

Own the day

its cheaper to get it RR'd than melt pistons etc...

I bought a 12psi needle from avonbar and like a lot of people have said they are just a bench mark, mine was completely wrong for my engine it ran lean coming onto boost and was very rich on full throttle! It took alot of fettling to get it correct! I tuned mine with a wideband!

in the long run then is it cheaper to by a wideband then adjusting the needle for correct a/f ratio or just chucking on a rolling road and get it sorted there???
please thank you

Jack Jones

personally i would get the pro's to do it, if you have never done carb tuning or needel modding before it seems abit of a waste of time imo. get it done at a good rr and you will be fine :)

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

any idea of a good un around cambs area and idea of price
thanks
jack

Jack Jones

website:- http://www.terryhunt.co.uk

Hi,
I think you hit the nail on the head, the RR operator will give you a safe needle rather than the more spot on one you've spent lots of hours refining.
Same with ECU mapping there's the quick safe method or the long more precise method that gives you things like good economy and smoother throttle response.
Cheers,
Gavin :)

VEMs Authorised Installer / Re-seller. K head kits now available!

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Visit www.doyouneedabrain.co.uk

My Mini build diary

Cambridge area -Peter Baldwin at Wilshire garages definitely.£75 for the first hour and the £75 per hour, pro rata thereafter.He reckons two hours to get a result for most cars.I think his experience is worth that.

a friend of mine (only has a stage one kitted 998) is amazing when it comes to setting up minis. when driving them around for a few days, seems to get them spot on


if i was to get on a rolling road with the standard turbo dizzy, then get a megajolt set up would a new needle need to be made up again or would the timing just be set to works best on that needle???

Jack Jones

Hi.

Stuart Gurr at VMax in West Molsey, Surrey is my choice. He's on 07736063945.

£60 first hour then £60 per hour after that. He reckons 1.5 hours is normally what's usually needed.

As for needle profiling, Turbo Terry's post in TM on polishing SU Needles is a must read.

See

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=159683

Also, Terry came up with a novel dashpot piston lift indicator device to know which part of the needle to polish if the fuelling goes lean etc. Not much you can do if it's rich other than cut a new needle as you'd have to put the material back on the needle which is clearly impossible.

See

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=231607

When combined with an AFR gauge, the beauty of the Piston Lift Indicator is that you can see where on the taper, the needle needs modification.

Using the indicator, the AFR meter can be either a narrow band (which will only indicate either lean or rich but nothing in between) or a wide band (which will tell you the exact AFR (say 12.2:1, 11.9:1, 17.8:1 etc, etc).

Personally, I'd give polishing a go - its very theraputic !

I am doing all this on my van at the moment and have a standard BDD along with an Avonbar 10 psi as starters. I'm using one of Nic R's plenums as I found my own modified NA maestro plenum just did not flow enough TURBULENT air. Nic R's plenums retain the MT plenum restrictor tube and this seems to be key to good fuelling - there are lots of threads from Turbo Dave on this as well.

If you're canny, as long as you dont mind doing a bit more work, you should be able to walk into a scrappy and obtain a used 0.100" needle (Bxx, whatever) from most old Rover models that use a spring biased HIF44. They're usually pretty chunky needles. Then you can whittle them down to the same size as a BDD without having to fork out £10-£12 every time.

For example, the Rover V8 3.5 lump uses twin HIF44's that use 2 x BEK needles, likewise the Austin Princess uses something similar.

These are fat needles and there's lots of meat on them which is what you want, within reason, to start cutting a needle from.

Likewise, the standard MG Metro BDL is sometimes a good start but it'll go lean at Position 6 onwards as the boost comes on sio you'll need to fettle it down.

There's scope for choice here. Even if you do 85-90 % of the work, you'll then only need an hour on the RR rather than 2 or even 3.

If you go the scrappy route to harvest a few fat needles avoid the H6 or HS6 carbs as their needles wont fit the HIF44.

Good luck.

Richard.

Minivanless, but reluctantly happy living with the decision. There'll be another one day.
http://www.youtube.com/profile?user=minimadmotorman#p/u

richard i believe i was talking to you at malvern, you do seem to be quite knowledgable
thanks,
jack

Jack Jones

When I saw the "specific boost" needles on Avonbar it made me think, if you're looking for a needle to get the right fueling for your car, say in this case 15psi. Does that mean your willing to run the car at 15psi, while not set up to determine if the needle is indeed accurate? Bit risky I think!!

I understand that if you're eventually aiming to run at 15psi, this needle has a higher chance of being accurate, and you might only require a little bit of fettling to get it perfect compared to other needles!!

I think it might sound a bit miss-leading to some people, that think if they just whack a 15psi needle in it will be spot on! I know thats what I thought when I first started looking at bits at the start of my project.

Either way I think the needles are still sold with the intention that they will need to be altered/set up on a rolling road or with the right equipment, as said above, no engine is the same so ideally if you want a strong reliable motor its a must!!

i can set up with timing light then emissions machine at work, and the lad i work with will be able to adjust the boost then i will learn eventually

i plan on running 15 psi of boost on a bleed valve in the car so i can wind it down for fuel consumption then if i get a saxo/corsa boy racer thing i can let them know my mini it faster then there bodykitted up piece of shite

Jack Jones

emmissions machine?

ask yourself, will this tell you your afr under load? (which is what counts)

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"