11 replies to this topic

[tc001]

I was hoping someone might give me some pointers for a needle for the following spec, at the moment its fitted with a BDL and I recently bought a BDR but have not had chance to try it out yet

 

Carburettor        Single SU HIF44
Engine               A series 1330cc(1275cc overbored +0.060inch using 21253's)
Air Filter             K&N Cone
Inlet Manifold     MG Metro alloy inlet
Cylinder Head   1275cc head stage 2/3
Camshaft           SW10
Rockers             Standard cast
Exhaust             Maniflow LCB, RC twin-box
Ignition               Aldon Yellow

 

Sorry my topic should read "which needle" lol

 

Edited by tc001, 19 September 2013 - 05:23 PM.

[IainNeon91]

The BDL should be able to cope with that spec, it's the metro turbo needle as far as im aware..

 

How is it running now? With your current needle?

[KernowCooper]

BDL is the standard MG Metro needle not a Turbo one and I doubt it will be rich enough under full power. I have a 1330 with 276 cam Stg 4 Head Aldon yellow And full Maniflow and use a BBC needle in mine. The BDL was dangeriouly on the weak side under full power

[tc001]

BDL is the standard MG Metro needle not a Turbo one and I doubt it will be rich enough under full power. I have a 1330 with 276 cam Stg 4 Head Aldon yellow And full Maniflow and use a BBC needle in mine. The BDL was dangeriouly on the weak side under full power

 

I did try a BBC needle but it seemed not as good as the BDL, was hoping the BDR would be somewhere between the 2 eg richer

[ACDodd]

You will likely need a custom needle for that, what rocker?

Ac

[tc001]

You will likely need a custom needle for that, what rocker?

Ac

I am using the standard cast rockers

[KernowCooper]

BBC needle is a fair bit richer through the range than the BDL

 

Describe the issues your having and how are you setting the co at idle ?

Edited by KernowCooper, 19 September 2013 - 09:04 PM.

[ACDodd]

I would go with a BDK off the shelf. Better a still a BBA with significant mods.

 

AC

Edited by ACDodd, 19 September 2013 - 10:17 PM.

[tc001]

I would go with a BDK off the shelf. Better a still a BBA with significant mods.

 

AC

 

Thanks AC

[Dusky]

Sorry to ressurect, what would you pick for the Same engine, but with a sw5 ( actually evo 001 )cam?( Head is mg metro with cleaned up ports)
Does bbw/ BAP aounds Right?:)
Air filter is a kn inlay if that makes a difference ( modded airbox)

Edited by Dusky, 10 October 2016 - 05:13 PM.

[Leonrjohnson]

I have a HIF44 on 970 S : this is what I found with needles:

                             BDR  fitted  too rich over most throttle settings                                                                                                                                                                                                   BCE  too rich at bottom end              

                             BDL  too lean at top end              

                             BCF  too rich mid to top end.

                            BBW fitted ,  good and is what I am using now

 

 

I did a lot of research on this website :http://www.mintylamb.co.uk/suneedle/

 

Having narrowed down the needle choice, I bought a few. Then I went driving with a AFR meter stuck up the exhaust, and now am using a BBW which works well over the entire RPM range: I use 8000 rpm quite often.

Hope this is of use to you.

             

Edited by Leonrjohnson, 10 October 2016 - 08:15 PM.

[Dusky]

Intresting! Minispares adviced me a BBW :)
But Have a BAP in stock wich is very similar