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Bi-Metal Head Gaskets

Misc. Components

Decompression Plates

Manifold Adaptors

Thermal Products

DECOMPRESSION PLATES - are a cost effective & easy way to lower the compression ratio of an engine.

These must be used as well as one conventional head gasket, with some high temperature sealant between the 2 metal surfaces.  For more info (especially for choice of material) click here.  Please e-mail or phone if you require any help with calculations - contact details here.  Figures are for guidelines only, please ensure that these match your engine.  All these components are specially made for the individual customer, but availability is usually within a couple of days plus an extra day in the post (don't forget weekends will add to this).  Please feel free to enquire about a delivery date at any point.
Please note that these prices include shipping to UK Mainland only.  We can ship anywhere in the world but overseas costs must be quoted individually, please contact us by e-mail for costs.
 

Engine type	Product details	Reduction in compression ratio (assumes standard internals).	Price	Shop
High temp non-setting sealant for use with decomp plates (and many other finely machined metal to metal joints).			£12.00
Citroen Saxo VTR TU5 9.6:1CR Please advise by e-mail if current head gasket is fibre or MLS.  (Sealant is listed at the top of this page)	1.0mm alloy decomp plate	-0.85	£90.00
	2.0mm alloy decomp plate	-1.55	£118.00
BMW M20B25 2494cc BMW M20B27 2693cc These engines have various different CRs, please ask if unsure. (Sealant is listed at the top of this page)	1.0mm alloy decomp plate	Approx -0.8 depending on original CR	£118.00
	2.0mm alloy decomp plate	Approx -1.5 depending on original CR	£169.00
	3.0mm alloy decomp plate	Approx -2.0 depending on original CR	£190.00
BMW M42 1796cc 10.5:1CR Includes 2 pieces for around the timing chain area. (Sealant is listed at the top of this page)	1.0mm alloy decomp plate	-1.0	£90.00
	2.0mm alloy decomp plate	-1.8	£118.00
	3.0mm alloy decomp plate	-2.5	£151.00
Ford Cosworth YB 1993cc 8.0:1CR (Sealant is listed at the top of this page)	0.6mm copper decomp plate	-0.4	£114.00
	0.9mm copper decomp plate	-0.45	£120.00
	1.2mm copper decomp plate	-0.7	£129.00
	1.5mm copper decomp plate	-0.85	£146.00
	1.0mm alloy decomp plate	-0.6	£102.00
	2.0mm alloy decomp plate	-1.1	£136.00
Ford CVH 1.6 RS Turbo 1597cc 8.3:1. Please specify which make of head gasket you intend to use, or order our top quality gasket at the same time.  This will ensure that the decomp plate matches the gasket exactly. (Sealant is listed at the top of this page)	0.6mm copper decomp plate	-0.4	£98.00
	0.9mm copper decomp plate	-0.6	£103.00
	1.2mm copper decomp plate	-0.8	£111.00
	1.5mm copper decomp plate	-1.0	£146.00
	1.0mm alloy decomp plate	-0.65	£90.00
	1.5mm alloy decomp plate	-1.0	£104.00
	2.0mm alloy decomp plate	-1.2	£118.00
	Conventional head gasket to go with CVH decomp plate	-	£33.00
Ford Zetec 1796cc 10.0:1CR (Sealant is listed at the top of this page)	1.0mm alloy decomp plate	- 0.9	£90.00
	2.0mm alloy decomp plate	- 1.6	£118.00
	3.0mm alloy decomp plate	- 2.2	£151.00
Ford Zetec 1998cc 10.0:1CR (Sealant is listed at the top of this page)	1.0mm alloy decomp plate	- 0.9	£90.00
	2.0mm alloy decomp plate	- 1.6	£118.00
	3.0mm alloy decomp plate	- 2.2	£151.00
Ford ZVH (Sealant is listed at the top of this page)	The "ZVH" engine is a Zetec bottom end (1.8 or 2.0 litre) with a CVH head fitted.  There are 3 problems to overcome - 1) Compression ratio.  2) The redundant oil return passages in the Zetec block that need to be blanked off.  3) There is a waterway in the Zetec block that sits very close to an oil gallery in the CVH head. A copper decompression plate will tackle all of these 3 problems in one go, and will allow easy fitment of block to head.  If you have already sorted out issues 2 & 3, then a (cheaper) alloy plate can be used.  Because of the amount of variations it will be necessary for you to contact me with your engine details - this will only take a couple of minutes.
VW ABD 1390cc 8v 9.5:1 (Sealant is listed at the top of this page)	1.0mm alloy decomp plate	-0.9	£90.00
	2.0mm alloy decomp plate	-1.7	£118.00
VW AFH 1390cc 16v 10.4:1 (Sealant is listed at the top of this page)	1.0mm alloy decomp plate	-1.0	£90.00
	2.0mm alloy decomp plate	-2.0	£118.00