LCB manifolds.....which one

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youngun
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LCB manifolds.....which one

Post by youngun »

Now Ive heard a lot about certain stainless LCB manifolds cracking and so on. Are there ones to avoid? Which one is the best bet to go for Value for money wise?

Thanks,
YG
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bmcecosse
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Post by bmcecosse »

Well - Maniflow get a good name - and yes, stainless ones seem to be prone to cracking. No need for stainless of course - that part of the system doesn't rust because it gets hot enough to drive away any moisture.
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youngun
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Post by youngun »

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alex_holden
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Post by alex_holden »

Don't you have a 948 engine? Would an LCB really make much difference?
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bmcecosse
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Post by bmcecosse »

That's the one (but there are less expensive suppliers of similar manifolds) - but really - for your engine it's NOT the top priority!! It would help of course, after you fitted a 12G940 head and a larger bore HIF 38 carb - but these will be #1 and #2 respectively - the LCB being #3 and would need a good flowing exhaust system attached.
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youngun
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Post by youngun »

Well the thing is I have the metro cam fitted, and a howley manifold and HIF38, so i figured to have the manifold and corresponding exhaust system all present. Then when i can ill fit the 12G940 head fitted to the engine once im happy that it and the rest of the car is working properly!

Or do i run the current set up with the standard HS2 and cruddy two part exhaust/inlet manifold (thus having to buy a corresponding exhaust system)?
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bmcecosse
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Post by bmcecosse »

Run the bigger carb and standard exhaust - just cut the exhaust section off the old combined manifold and use it - make sure you cut into the inlet section so no unwanted holes in the exhaust section!!! The 940 head is the top priority.
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youngun
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Post by youngun »

Sounds like a plan for now, cheers BMC!
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youngun
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Post by youngun »

Just realised something, my original style inlet/exhaust manifold is the 2 piece ally and cast iron one........
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Post by Stig »

bmcecosse wrote:No need for stainless of course - that part of the system doesn't rust because it gets hot enough to drive away any moisture.
Don't you believe it. I've had to repair mine in a couple of places due to rust.
youngun
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Post by youngun »

Hmmm, im contemplating fabricating my own manifold, which will then fit onto a normal single box stainless system, any ideas?
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bmcecosse
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Post by bmcecosse »

I would save the two-piece manifold - and butcher a more common one-piece manifold. The exhaust flow is slight better in the later manifolds anyway. Quite a job to fabricate an lcb - but if you have the facilities! May be easier to buy a v cheap second hand Mini lcb - and modify that to fit. That's my plan - someday soon - although it's been the 'plan' for 5 years now!!!!!
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youngun
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Post by youngun »

I think ill get one of the cast pieces and just lop the exhaust bit off!
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Post by bmcecosse »

That's the best way forward at the moment.
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