LCB exhuast system and HIF 44 carb

[flowersGTR]

hello there
i was planning on getting a LCB manifold and exhuast system for my now 1275 minor and i was wondering if anyone had any experience of a particular make from someone. has anyone got an exhuast like this that they would recomend?

theres the ESM stainless steel LCB manifold
and either a mild steel or stainless steel twin box system to go with it
http://morrisminorspares.co.uk/shop/pro ... f8c08fd4cd

theres a bull motif multibranch manifold (will have to find out if this is an LCB)

and the morris minor centre birmingham LCB stainless steel with a mild steel "front silencer" and "rear resonance section"

i have read somewhere on the forum that you shouldnt connect a stainless steel and a mild steel exhuast system together is this true??
and what is meant by a rear resonance section?

i was going to get a new carb and have been recomended the HIF 44 would you guys agree and know the best place to get one?

thanks guys

[bmcecosse]

Plenty of HIF 44s on ebay. They don't suffer much wear - should be fine. You also need an MG Metro inlet manifold to go with it. Some have reported cracking problems with stainless multi-branch exhaust manifolds - and that section gets so hot it doesn't rust anyway. In general - stainless and mild in contact creates a cell - but perhaps on the exhaust it will be hot enough to drive off any moisture and therefore any ability to exchange ions !

[Stig]

The problem with connecting mild steel to stainless is that it encourages the mild steel to rust. I've got a mild steel LCB with a stainless system and I've had to repair the manifold where it connects to the exhaust system. Mind you, I've also had to repair one of the downpipes too so I suspect it wasn't the best quality steel. I got the manifold & systems from Grumpy's a few years ago - it's a larger bore single box system which isn't much louder than the original "pea shooter".

Apparently it's common practice to use mild steel for manifolds as stainless is more likely to crack with the vibration. I couldn't weld a stainless manifold with my welder anyway if it did need fixing.

I wouldn't lose any sleep about encouraging rust if I were you, chances are that using exhaust assembly paste minimises the metal-to-metal contact.

[mike.perry]

I have a MMC Birmingham LCB system on my Traveller which has had no problems for the past 18months.
The only criticism I have is that the rear section joins the middle section on the angle up to the rear axle which made alignment rather tricky. It would have been easier if the two sections had joined on the straight section behind the front silencer. The second silencer also robs the car of the distinctive exhaust note on the overrun

[bmcecosse]

I made up a 3 branch system using a Cooper S straight through silencer under the floor in the normal position, with plain pipe back from there and over the axle. Nice exhaust note (!) but no over-run trumpet!

[flowersGTR]

thanks for the advice guys
i didnt think to look on ebay, good idea
i'm now thinking how does the twin box system make it sound?
i'd like it to sound a little bit more sporty and growly does the twin box not allow this

[mike.perry]

I have never stood and listened as mine was driven past. It sounds quite rorty from the driving seat but that is probably the intake noise from the K&N filters. As I said earlier you do lose the Morris Minor overrun note. Maybe with a large bore system and a single silencer it would regain the sound.

[Stig]

As I said earlier you do lose the Morris Minor overrun note. Maybe with a large bore system and a single silencer it would regain the sound.

Afraid not. Mine's a single box larger bore system and it's lost the charming fart on the overrun.

[Peetee]

i'd like it to sound a little bit more sporty and growly does the twin box not allow this

The Falcon branded one does. it's actually growlier with the standard manifold.

[Mogwai]

I have the twin box Maniflow system, sounds sporty without being too loud for normal driving / motorway etc