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Post by Nick on Feb 19, 2014 17:49:48 GMT
woke up to non running car today, any attempts to start her simply left petrol running out of one of the hotspot remains.. Got a friend to pick one up from the spares pile down the garage and under close inspection it appears the entire inside of the one she grabbed is steel formed? I was under the impression they were an aluminium manifold with steel hotspot pipes inserted into them.. not an aluminium jacket sitting over a steel manifold  can anyone shed any light on this, obviously I am presuming she has rotted through to the hotspot pipes internally, |
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Post by macplaxton on Feb 19, 2014 21:57:27 GMT
an aluminium jacket sitting over a steel manifold That's what it is. Well the casty/lumpy bit is ally, and the pipework is steel pushed?/pressed? in (quite deep). Pics please!  |
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Post by Nick on Feb 20, 2014 20:47:18 GMT
the steel is through and through mate, right the way up to the carb mouth..they must make the manifold in steel, then lay the hotspots underneath (hence the lower part at the other end where it wraps round and under) and then cast tha ally in place..
changed the manifold, the petrol stench has gone but its still running like a bag of nails, condensor an plugs next
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Post by ozzie on Feb 21, 2014 7:23:33 GMT
I don't know about the manifolds but what a lovely jig.
I trust the idea is to make a new manifol?
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Post by 33grinder on Feb 21, 2014 9:56:45 GMT
I believe the intention behind the jig is to replace the (as missing in this photo) hotspot pipe. These pipes were designed to run warm air under the carburettor to aid cold starts, however the condensation that this caused would rot out both this pipe and it's counterpart in the nearside heat exchanger. I believe that jig is most likely a library photo as these were never factory issue; they have been made by enthusiasts. Both DCA and DCN has one and there is one for sale in the UK for £90 iirc.
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Post by ozzie on Feb 22, 2014 18:48:37 GMT
I have a rotted through one on the engine I picked up from Taunton.
I was thinking there must be some flexy metal pipe somewhere that can be utilised for joining the flange to the pipe then it can all be lined up but making a jig is the sensible option whilst I still have one in one piece that is until I try and remove the collector box of Isabel to try and repair it.
I think a stainless set of pipes pressed in would look nice on a show car then they could be polished. Not on Isabel tho she is a bit of a ratter than a minter.
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