Mini manifold and hs2?

[samir]

Hi I was driving my minor down the a38 when I heard a pop, turns out the area where the manifold joins the exhaust has sheared off. I have a mini manifold with a hs4 carb on it but I still need to build the hs4 up(/still learning how though). Can I use the mini manifold in conjunction with the hs2 which is in my engine bay??

[Chipper]

What a strange thing to happen!

AFAIK, an HS2 carb has a smaller mounting flange size and bolt-hole spacing to the HS4, so you'll need to match the carb with the appropriate manifold.

However, both HS4 and HIF carbs share the same diagonal bolt spacing.

[samir]

That's disappointing news, I though all I will have to do is swap the manifolds. I need to put the needle in the hs4 iv got but cannot secure it, plus I don't think iv got the spring that goes on top of the needle.

[Chipper]

Whereabouts did the manifold crack - on the bit that the clamp attaches to?

It may be possible to either get it welded, or maybe to use a strong, heat-proof adhesive, such as Chemical Metal, JB Weld, etc...

[samir]

Yes around where it clamps. Ye might have a look at it tomorrow to see if I can attempt a fix with what your recommending, by the look of it last time I looked I think it had already been welded at some point.
Would running the car like this damage the engine? Or is just the really loud noise you get the only consequence?

[Roni]

I know the feeling -
http://www.mmoc.org.uk/viewtopic.php?f= ... 82&start=0

[samir]

Yep not a nice feeling

[Chipper]

No, running it like that shouldn't harm the engine, but you won't want to be running it like that for long, as:

a) it will be deafening
b) it will be embarassing
c) you may get pulled over by Old Bill for excess noise pollution.

[bmcecosse]

And it may poison you with exhaust fumes. Just pick up another HS2 manifold - usually for pennies - or perhaps someone near you will lend you one till you get the HS4 up and running. The spring from the HS2 will be fine - and what's the problem with the needle??

[samir]

Hi, I don't really know any morris minor owners in the South Birmingham area. Also I bought a hs4 from ebay, I have an kn filter for it, all the gaskets needed, an AAA needle I purchased from minispares, but I don't have the spring that you need to have with the needle. Also when I fit it I don't know how to centre everything as I heard everything needs to be centred. Are you saying you can use the spring from the hs2 needle? Also I don't even know if the hs4 is functioning as it should, it was sold saying it does run but I would have to run it to confirm.

[samir]

I visit derby a lot so if there any members out in those neck of the woods I could get some tips from, my uncle has a garage opposite the morris minor owners (derby) but there more administration then parts. I do be around that area quite a lot

[bmcecosse]

Just fit the needle - it's self centering -and use the spring from the HS2. As long as the piston rises and falls easily (with the little damper piston removed) it will be fine.

[samir]

Ah right, sorry for my lack of knowledge, so I take the needle adjusting screw out? Put the spring into the needle hole, then slide the needle into the hole, then how much do I screw the needle adjusting screw by? And when first starting the carb on the car any tips?

Kind regards

[bmcecosse]

Let's see pictures of the needle - and the piston from the carb.

[Chipper]

Do HS2 carbs have the spring on the needle? I thought they just fitted directly into the piston.

[bmcecosse]

Yes - on HS2. But I think HS4 is spring loaded - which is why I ask for a picture. I don't have an HS4 handy - certainly an H4 is not springy needle, but my HS6 carbs are springy needle.