Lotus Sunbeam, Esprit, Excel, Jensen Healey Uprated, Heavy Duty Valve Spring Set. Condition is New.

Uprated valve spring set for Lotus 907, 911, 912 and 910LC Engines. These springs allow higher valve lifts and are ideal for fast road / rally engines although they also make an economical replacement for the standard valve springs. Suitable for most high performance camshaft profiles. I use these with all my own cam profiles as they are a great all round spring suited to higher lift and more rpm, but they have sensible seat pressures for fast road use.  These springs will provide 72lbs seat pressure at 1.4" fitted length (without the seat platform), I find that 65lbs is enough for most fast road type engines and 75lbs seated pressure allows rpms of 8500rpm.

For maximum reliability these are supplied with our billet steel spring seat platforms, these replace the standard pressed mild steel platforms which often break down and release debris into the oil.  Made from high strength EN24T our platforms are considerably more robust. See our other listings for more details of titanium spring retainers and steel camshaft followers. 

Not suitable for chargecooled engines.

Dispatched with Royal Mail 1st Class.

Please note any customs charges/import duties are the responsibility of the purchaser.