CHP Heavy Duty Relief Springs for Flatheads
Price and stock:
Item №
60-825
Price incl. VAT
3.89 €
Available
6
Ready for immediate delivery from our Würzburg, Germany warehouse
The price includes 0.62 € German VAT.
- Spring by Cala’s High Performance
- for relief valve
- CHP oil feed pumps
- spring steel
- length: 58 mm
- Ø 10 mm
- Sweden
- gross weight: 4 g
For performance engines. These special relief valve springs are a tad stiffer than the standard springs in CHP Flathead oil feed pumps and will raise oil pressure by 5 psi.
See also:

CHP Oil Feed Pumps for Flatheads
It’s a fact: when pushed, those trusty Flatheads get hot, or very hot to put it bluntly, which is also a result of low oil pump volume and pressure. The CHP pump is a once and for all cure for this problem. While looking stock on the outside it substantially raises the capacity of the engines lubrication system with its internal modern gerotor technology. Oil pressure with hot engine is typically around 30 psi, instead of 5 psi with stock pumps. Feed volume is about 1 quart per 45 seconds, while original pumps need 7-10 minutes for this. As a result the engine runs smoother and cooler and can handle more power without problems. Installation is easy as this is a a true bolt-on unit.

CHP Scavenger Pump Conversion Kit for Flatheads
With the CHP pump installed oil feed volume is substantialy increased and the stock scavenger system might reach its limit. This conversion kit for the scavenger pump raises volume by about 40% for a more effective oil return. It includes all necessary longer small parts.

Have any questions?
Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: service@wwag.com