Fast forward 44 years - At significant cost, I had my 140 manifolds re-coated by a man in Hampshire. They were away quite some time but looked fabulous when returned. The package included detailed instructions on "curing" the new coating by gradually building up the heat with a cool down period between each cycle. I followed this to the letter, a couple of days before the cars maiden voyage, a trip to the Silverstone Classic.
It was a very warm weekend with the engine still tight, running in, and hotter than I would have liked. After switching off, due to heat soak, the water temperature gauge (a Smiths unit combined with the oil pressure gauge)would read 95 PSI or even less! (XK drivers will realise this is not a typo or an erroneous piece of misinformation).
The Saturday track action finished with a huge thunderstorm and flash floods. On the way back to our Peterborough Hotel the 140 never missed a beat, often thrashing through several inches of standing water with clouds of steam pouring from the very hot engine bay. Great fun.
Back at Silverstone on Sunday I opened the bonnet to show off my newly built engine with shiny black enamel manifolds, to find most of the enamel had fallen off. I guess as a result of some very rapid hot / cold cycles.
The man from Hampshire was entirely unimpressed with my protestations. He'd obviously heard it all before.
It took a while to get over this, with the ratty appearance of the manifolds spoiling an otherwise immaculate engine bay. Eventually I sent them of to Zircotec for coating with their patented ceramic process, not nearly as nice as black enamel but at least reliable and not effected by alternating temperature extremes.
|Zircotec coated 140 manifolds. I really need to take the rust of |
the ends of the studs, but its -6 in the garage so it may have to
wait till spring.
During one of my regular trawls through EBay I find a pair listed as 'New Old Stock' at a starting price of £350.00. They don't go, so I contact the seller direct, Heritage Jaguar Parts. We agree a price and I arrange to collect from their warehouse in Dewsbury, West Yorkshire.
|Just one corner of the store - mainly engines, gearboxes|
and heads in this area. Out of camera shot is a small mountain
of pistons and another of con-rods. Over a dozen pairs of smooth
stud cam covers are on the orange shelf unit.
|One of several random boxes of instruments awaiting|
identification and labelling.
|I am only guessing and hoping that these are the correct inner|
rims for an early 120 never having seen an example off a car.
|Lovely new old stock Vitreous Enamelled manifolds.|
Don't know how long they'll stay like this but I will take
bets it will be longer than a brand new pair made in ?????
Contact details for Jason at Heritage Jaguar Parts :
Telephone 01924 430818