MED X-LITE ADJUSTABLE DUPLEX

Name: MED X-LITE ADJUSTABLE DUPLEX
Brand: MED Engineering
SKU: MED-1200-AD
Price: 165.0 GBP
Availability: InStock

Part No: MED-1200-AD

£165.00 £137.50 EXC VAT

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Availability: In Stock

Description

The MED X-Lite timing kit weighs an incredible 900g including the duplex Iwis chain - a 27% weight saving over the MED Ultra Light steel/alloy setup.

Accurate camshaft adjustment is made via a multi-key crankshaft pulley, which allows for a lightweight one-piece 7075 aluminium camshaft sprocket. On the latest update, we've opted for a twin-row chain to improve longevity.

The small crankshaft sprocket has a full radius machined into the rear of the mounting diameter, so it's ideal for use with either a standard or aftermarket steel crank.

Main features:

One-piece 7075 high strength aluminium camshaft sprocket
Multi-keyway steel crankshaft pulley
Genuine Iwis duplex timing chain
Complete kit weighs just 900g
2 x Allen countersink screws for the engine plate
3 x Allen cap screws and spring washers to mount the camshaft triangle

Please note that light modification of the standard timing cover may be required for clearance, as with all duplex setups.

Frequently Asked Questions

What kind of A-Series engine does this suit?

The MED X-Lite timing kit is best suited to trackday and full competition cars, when aiming to save every gram possible from the rotating assembly. The one-piece 7075 aluminium camshaft sprocket helps to achieve an incredibly light weight setup, and gives good longevity for this application. For higher-mileage use, we would suggest the MED Ultra Light, which runs steel outer teeth on the cam sprocket.

Can I run this with an A+ chain tensioner?

The A+ chain tensioner is designed to be used with a standard simplex chain, and it has been known to fail in use with a wider duplex setup, so we would recommend running without the tensioner.

How do I adjust the timing?

The crankshaft sprocket has a multi-slot keyway, so rather than rotating the camshaft on a vernier-style setup, adjustment is made by rotating the crankshaft sprocket on the key ways in relation to the camshaft sprocket. Some on-and-off testing will be required; fine adjustment can be achieved from moving the chain on the camshaft sprocket in addition.

Do I need to use the MED Cam Timing Cover?

This kit will fit inside the standard timing cover, but you will need to remove the internal oil shield and lightly 'adjust' one of the indentations for clearance. This applies to all duplex timing kits, so it may have already been modified. Otherwise the MED Cam Timing Cover fits straight over the top, reduces the chances of oil leaks and looks fantastic.

My sprockets are too tight on the cam/crankshaft, what do I do?

We make this kit to suit all A-Series engines, and there can be a huge variety in tolerance on the end of the crank and camshafts. The sprockets should be a snug fit, but not so tight that they need excess force to fit. First, remove the steel keys and check for burrs. Try the sprockets in place with the keys removed, and if too tight you will need to lightly hone the centre bores to a give a snug fit.

Do I need to account for change stretch when setting the timing?

Budget chains can stretch significantly, so we insist on using German-made Iwis chains, which do not give this problem. Set the cam timing as per the manufacturer's spec sheet.

Can I just line up the dots and run the kit without adjustment?

Potentially, although this is unlikely to give you the optimum cam timing. In the best case, the engine will not run very efficiently, in the worst case it could cause a catastrophic failure. The whole idea of this kit is to allow fine adjustment of the camshaft timing for optimum performance, so it would make sense to do this.