Piper Camshaft Kit GEMS 4.0 4.6 suitable for Range Rover P38 up to 1999 and others

£495.00
£412.50 (ex. VAT)

Product information

Included in this listing is an RPi camshaft kit containing a Piper camshaft, standard GEMS timing chain set, OEM tappets and a set of high quality gaskets required to complete the job (water pump gasket now included) as well as full lifetime RPi telephone assistance should you need any help with installation. The kit here is suitable for a 4.0 or 4.6 GEMS engines as found in the Range Rover P38 pre-1999, Defender 90 50th, many Morgan +8's and more. This is the very same kit that we at RPi would use in our own GEMS engines so you can be sure of excellent quality in every part.


Technical Specifications

  • High quality Piper camshaft - the only make of camshaft we'll use in our own engines.
  • Standard timing chain set suitable for GEMS/Sagem applications only
  • OEM hydraulic tappets - the only type suitable
  • Cam kits for other engines are available - please enquire

Which cam best suits my needs?

Piper Torquemax
Like the name suggests, this camshaft aims for torque at the bottom to mid rev range, making it the perfect choice for four wheel drive applications such as Land Rovers and Range Rovers (especially if used for towing), as well as heavier saloons such as the Rover P5, P6 and SD1 which are still on standard heads

Piper 270
Aimed toward a power increase in the mid rev range with a good increase in usable torque to boot, the Piper 270 is great for light 2wd cars in standard form such as MG B's and Morgans, or heavier saloons and Land Rovers which have been upgraded to stage 1 heads or beyond.

Piper "Storm"
This is our stage 3 camshaft, bespoke to RPi Engineering. Set up for more power at the top of the rev range, while still keeping a smooth idle and driveability at low revs and low speeds and no noticeable loss of torque. Stage 1 or above cylinder heads and ECU chipping are recommended when using the Storm camshaft

Piper 285
The power band gets shifted even further up, please contact RPi to discuss this camshaft before purchasing.


RPi Advice

  • Shim kits for setting tapped pre-load are available and essential for all work involving camshaft, valves or rocker assemblies
  • Never re-use your original tappets - doing so will cause accelerated wear of the camshaft
  • Timing chains are normally badly stretched and will always need replacing
  • Push rods are low-cost and should be replaced if at all worn
  • Rockers and rocker shafts should be inspected for signs of wear or breakage

Brand Unbranded
Condition New
Weight 15kg