Uprated High tensile Mains Bolts for Z20 Engine

This full set of high tensile steel bolts will ensure that your high power Z20's crank stays where it should be.

Come complete with instructions for fitment.

Stainless Sump Bolt Kit for Vauxhall Z20 Engine

Replacement set of bolts for the Z20 engine's sump.

Whilst mainly being a better looks thing, these bolts are also a bit less liable to rounding, especially the little ones in the lower steel part of the pan. They are also nice and clean, and won't shed any zinc coatings, due to not having any, into your oil.

This is for a full set of bolts to do the entire sump, upper and lower.

These are a graded stainless bolt with intergarted flange head , this provides a nicer spread of the load into the sump mounting faces when fastening them together. 

Light weight Billet steel Flywheel 

CNC machined, including the integral starter teeth 

Suits the standard type Clutch basket and works brilliantly with uprated Helix items 

Dynamically balanced out of the box ready to fit 

Includes uprated clutch cover bolts 

At 4.4 KG these are as light as you can get without going special order. 

 Other flywheels are available to suit twin plate race type clutches so please get in touch if this is what you need 

Z22 / X22 H-Beam Connecting Rods from FCP

Forged from 4340 Chrome Moly Steel, fully machined, shot peened, and then precision honed to size, FCP Engineerings forged rods are designed for the most arduous use in today's high performance engines.

Rated to 600hp and 9000rpm by FCP, these rods are the highest quality you will find in this price range.

They come ready to go with ARP 2000 high strength rod bolts.

Spec;-

Centre/Centre length - 148mm

Big end diameter - 52mm

Little end diameter - 21mm

Weight with bolts - 551g

Sold as a set of four, with ARP2000 bolts and ARP thread lube.

Laser Cut from 6 mm thick 304 stainless steel , this breather base plate is the ideal start for people interested in making thier own crank breather system 

Hole suited to 25MM diameter tube 

Comes supplied with stainless bolts and washers to finish the installation nicely ,

Should you need a bunch of these for making a batch of breathers then please get in touch and we will be able to offer more competative pricing again . 

Turbo Brace developed for use on Nortech V band manifold - Gen1 GT28 type turbo

A turbo support is always a good idea to take some of the weight off the end of the manifold, meaning a much longer life to the manifold.  

A flexible brace type mount should alwas be used on a turbo system, as it is intensly heated, things tend to expand and contract. Solid type brace systems will only lead to cracking sooner.

This flexible support type brace for the Z20 series engine, running a Nortech V band manifold system (others TBC )  with a first generation Garrett series turbo.  Generally in this frame the compressor housing bolts seem o be imperial sizes so we will send out the apropiate bolt for your kit. 

Attaching to one of the compressor cover bolts at the side of the compressor cover most near the engine block , this brace then utilises one of the engine block RWD engine mount configuation bolts to take the weight of the core,  set up well you should be able to remove your manifold and the turbo more or less stay in place with only the brace and the downpipe.

Not having the weight of the turbo itself hung on the manifold will make a large difference in it's life.

Utilises the same quailty spherical bearing as we use in our suspension parts , full stainless steel hardware package. 

Pauter X-Beam Racing Con Rods for Vauxhall Z20 Engine

If you are building something serious then these are the way to go for your conrods.

Made to take some serious abuse, Pauter stand by them upto 1000hp and 9000Rpm. It is upto you if you wish to test them further than this!

Price is for a set of four, these come complete with Custom age ARP 625 bolts.

Z20 engine upper sump gasket - the one that goes between the block and the alloy sump 

Z20 engine lower sump gasket  - the one that goes between the alloy sump and the lower steel sump pan 

When upping the boost on a standard type engine , sometimes its a good idea to pull the compression back a little bit. This can be done easily with a thicker headgasket as one way of doing it without having your pistons machined. Going thicker in headgasket size is only a solution for a certain amount , if you end off needing a ludicrously thick gasket to get the compression you want then its probably time to start thinking about other options. The problem when you go too thick on the head gasket can be reliability. This area at the very top of the cylinder is where a lot of the really high pressure energy is made – its often a weak point on some engines prior to increasing the thickness. Increasing the thickness increases the surface area the chamber sees pressure over , meaning that the gas can now actually get more force into blowing the gasket out.

 

If building your engine from the onset for really high boost then we would recommend you ask about piston machining being involved in your build. If you maybe already have you engine built but are having some slight detonation issues then the RnD gasket could be ideal for you. Usually the heavier detonation on a z20 will always be around the outer ring of the piston , usually around the exhaust valve side.

The z20 engine tends to have quite a tight squish band . The standard tolerance of piston protrusion is 0.4mm , its acceptable to skim the block a few thou so piston protrusions can easily get into the 0.45mm area without piston correction. The standard headgasket is 1.1mm thick , the cylinder head is flat and has no recess for the piston. This leaves us with an area around the top of the piston that will come within 0.65mm of the head ( about 0.025" ) just turning the engine over by hand , a little closer maybe at 7000RPM . The RnD gasket is 1.6mm thick , this immediately bumps 0.5mm onto this size giving us 1.15mm ( about 0.045 ) - this size is certainly better for running more boost , if you have built a few engines for high boost then you will maybe still also think that this is still tight!

The 1.6 mm gasket is the thickest gasket we recommend for the Z20 engines for high boost reliability..

The RnD gasket has no rivets installed - do not mix up the gasket layers 

We also offer custom machining of z20 pistons via post

Custom machining on pistons available on new pistons £95 inc VAT set of 4 pistons.

We also have some developed Wossner Pistons arriving into 2020 , please get in touch if you are unsure what you need

We strongly recommend the use of ARP headstuds , we only use this in all our engines.