Technical Video:

MED ST3 CAMSHAFT KIT - 1.3 ROCKERS

Name: MED ST3 CAMSHAFT KIT - 1.3 ROCKERS
Brand: MED Engineering
SKU: MED-1003-HT3
Price: 750.0 GBP
Availability: InStock

Part No: MED-1003-HT3

£750.00 £625.00 EXC VAT

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Availability: In Stock

Technical Video:

Description

All MED camshafts are machined from cross-drilled steel blanks, never re-profiled, so you can be assured of the highest quality product. Our three profiles have been developed specifically for road use with over 35 years of A-Series experience.

The Stage 3 kit comes with the following components;

Cross-drilled billet camshaft
Chilled iron cam follower set
Camshaft lock tab
Steel-backed oil pump
Camshaft timing disc
Double valve springs
Steel/alloy vernier duplex timing kit
1.3:1 roller rockers

Camshaft profile choice;

MED HT - An excellent road camshaft, 256/256 duration with a power band from 1000-6000rpm
MED RS - Our Road Sport camshaft, 270/284 duration with a power band from 1250-6500rpm
MED XT - Our track day camshaft, 280/280 duration with a power band from 2500-7250rpm
MED MPi - Designed for fast road multi-point injection Minis, 252/264 duration, power band from 1500-6500rpm
MED T3 - Special forced induction camshaft, 264/276 duration with reduced overlap

We have 1.3:1 roller rockers and oil pumps to suit both 1275 and 998/1098cc engines, selectable from the menu.

Frequently Asked Questions

Which camshaft should I choose?

It's entirely dependant on your driving preferences and the spec of the other engine components. Road trip mile muncher or daily driver? The most civilised HT profile would be ideal. Fast road car for country lane blasts? RS makes a good compromise. Fast road/trackday/rally car for the weekend? Go for the XT. A more conservative camshaft spec can often result in a more enjoyable driving experience on the road, as the peak power band is lower in the RPM range.

How much power can I expect?

It's impossible to answer without knowing the exact spec of the engine and the quality of the rebuild. However, for a rough guide, if we were to take an identical 1380cc high performance road engine with a modified head, re-worked crankshaft, single HIFF44 carburettor and 1.5:1 roller rockers, the following peak outputs could be expected: HT - 100lb.ft/100bhp, RS - 100lb.ft/106bhp, XT - 100lb.ft/112bhp.

Which engines will this fit?

The camshaft will suit all BMC A-Series and A-plus engines, with the exception of eight-port head conversions and late Rover MPi Minis (1996-2000). Standard 850 engines do not use camshaft bearings, so you will need to line-bore the block and fit bearings. We have different rockers to suit the 998/1098 engine, more specifically the small-bore cylinder heads, such as CAM4810 or 12G295.

Can I change my camshaft in situ?

It has been done, but we wouldn't recommend it.

Do I need 1.5:1 rockers or 1.3:1?

Our camshaft profiles have all been optimised to work below 1.5:1 rockers, but the 1.3:1 ratio rockers can work more effectively on certain engines. 1.5s usually give more power thanks to the increased valve lift, however there is no one-size-fits all, and some applications will benefit more from the 1.3 ratio. If you're unsure please call or email for more information.

Should camshaft choice vary between 1275 and 'small bore' engines?

Yes, we typically find that the 998/1098 engines work better with a more conservative camshaft profile (less lift and duration) compared to the 1275. So if you are considering the RS profile for a 998, you may prefer the performance of the HT, for example. Generally, for the best results, step down one profile when building a small-bore engine.