What needle for my carb?

Post by **youngun** » Mon Jul 07, 2008 6:49 pm

Just wondering what needle i should get for my HIF38 seeing as im servicing. Im running a standard head but with MG metro cam, howley manifold and an LCB.
Oh and this is probably a bit anal, but on what side of the rocker cover should the "Morris" plate and "patents" plate be when looking down on the engine in situ i.e. actually in the car!

thanks,
YG

Post by **Kevin** » Mon Jul 07, 2008 9:30 pm

I think you need a copy of Winsu as it will give you the advised spec against any combinations used I am led to believe, I think a couple of posters on here have used it, although the only foolproof way is with a rolling road.
The Morris plate should be on the drivers side of the rocker cover and the patents on the passenger side and both should be facing outwards so they can be read when looking from over the wing/

Post by **bmcecosse** » Tue Jul 08, 2008 11:22 am

AAA is a fair starting point for your carb. But what needle is in there at the moment ?

Post by **youngun** » Tue Jul 08, 2008 4:34 pm

Havent got a clue whats in it at the moment, will an ident number be stamped on it?

thanks for the help kevin

Post by **Stig** » Tue Jul 08, 2008 5:03 pm

Anyone know what needle was used when fitted to a 1.0L Metro? 'Cos that's what I've got with a fairly similar engine spec to YG's by the sound of it and it runs pretty well (though I suspect tuned more for economy than power).

If it's like a needle for an HS2 then it'll be stamped with the code on a flat bit at, erm, the thick end.

Post by **bmcecosse** » Wed Jul 09, 2008 6:35 am

Yes - needle code will be on the shank. Standard Metro 1 litre won't be too far away - certainly good starting point for economy.

Post by **Peetee** » Wed Jul 09, 2008 8:03 am

Could somebody with WinSU put this spec in so I know which needle it reccommends please.
Ital 1275 A+
Standard cam
standard filter
water heated inlet
HIF44
Large bore exhaust.

Post by **youngun** » Wed Jul 09, 2008 5:50 pm

Hmmm my needle has BP stamped on the shank......

Post by **Stig** » Thu Jul 10, 2008 8:00 am

youngun wrote:Hmmm my needle has BP stamped on the shank......

So better not run it on Shell petrol then!

But seriously folks, I think you can install and run WinSU for free if you just want to compare needle profiles, you have to pay if you want it to recommend a needle. So you'll be able to compare your BP needle with, say, the AAA needle that bmc has suggested. I'm sure I've got a Metro Haynes manual at home which might say what needle is used on a 1.0L metro. I'll have to have a look for it.

Post by **bmcecosse** » Thu Jul 10, 2008 11:00 am

BP - hmm - HIF 38 carbs have needles beginning with 'A' and 3 digits (ie Axx) and HIF 44 carbs have needle beginning with 'B' and 3 digits (ie Bxx).

Post by **youngun** » Thu Jul 10, 2008 5:15 pm

Hmm i obviously cant read then, ill have a look again sometime. BP was clearly stamped on it though.

Post by **bmcecosse** » Thu Jul 10, 2008 6:36 pm

It is an HIF type carb ?? If standard HS type carb then BP could be a possibility if not fitted with the spring-loaded needle arrangement.