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Posts mit dem Label head werden angezeigt. Alle Posts anzeigen
Samstag, 11. Februar 2017
Hillman Imp alloy head gasket shim
We have two Imp blocks needing head gaskets fitting, one is a standard 1967 875cc block and requires a 1mm alloy spacer fitting, the other is a 1971 998cc block and requires a 1.5mm alloy spacer fitting.
The picture shows the 998cc version, plus the bonding paste and an imported 998cc copper gasket supplied as a template. The alloy shim was made in Cape Town to a special order.
Wet fitted and ready for the engines cylinder head which was fitted and torqued down to be left over night.
Bonding was perfect and the top deck is totally flat.
We now have the required 0.015" clearance between the top of the piston and the top of the engine block.
With the new 998cc gasket fitted the head was ready to bolt back on. The camshaft was re fitted and we have perfect compression, the engine will be refitted into the car it belongs to in the morning.
This engine is now new, its the original engine from the 1971 Hillman Imp Deluxe we are now re building for a client.
Roy
The picture shows the 998cc version, plus the bonding paste and an imported 998cc copper gasket supplied as a template. The alloy shim was made in Cape Town to a special order.
Wet fitted and ready for the engines cylinder head which was fitted and torqued down to be left over night.
Bonding was perfect and the top deck is totally flat.
We now have the required 0.015" clearance between the top of the piston and the top of the engine block.
With the new 998cc gasket fitted the head was ready to bolt back on. The camshaft was re fitted and we have perfect compression, the engine will be refitted into the car it belongs to in the morning.
This engine is now new, its the original engine from the 1971 Hillman Imp Deluxe we are now re building for a client.
Roy
Sonntag, 15. Januar 2017
B G Type C mast head units are better
Better than what?
Well I posted a blog in November 2011 about a wind speed instrument I donated to the HBYC marina section, really it was a trade with Chris, from yacht Faraway and for his old B&G Network instuments so that the club could have a winspeed indicator.
Not a bad trade, I supply the windspeed indicator and I get the gear he was replacing, well here we are two years plus later and guess what, its still working!
The old Type C B&G mast head unit, it must be at least twenty six years old but the grey control box that powers it was thirty six years old and that was two years ago!
Tuesday 15 November 2011
From the November 2011 blog.
HBYC Marina gets a 60 knot wind speed indicator
We often have members asking what our wind speed is recording,seems to me if its windy on the marina,its a sight more so out in Hout Bay,so to enable any member or visitor to see the wind speed,the club now has a B &G mast head unit in place,its the C type and with a matching 4" (100mm) gauge,which has a bonus in that it reads to 60 knots,as the later series Syncro types only read to 50 knots. (only?)
http://www.blogspot.com/2011/11/hbyc-marina-gets-60-knot-wind-speed.html
As I have seen two later and still the current 213 MHUs fail in three years and Chris supplied me with his two later 496 units, also not working, it stands to reason the older units are longer lasting?
Just how old is this, thirty years plus will be my guess!
So their old mast head gear is better than the newer 213 and 496 mast head units, why is this?
Roy
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