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.
Due to the substantially increased volume on the feed side it is recommended to upgrade the scavenger system with the CHP scavenger pump conversion kit.
- cast iron / steel
- with gaskets
- replaces OEM 26203-37
CHP Scavenger Pump Conversion Kit for Flatheads
CHP Heavy Duty Relief Springs for Flatheads
Cannonball Big Twin Flathead Crankcases
The selection includes cases with a smooth, uniform glass bead blasted finish and cases with an NOS (new old stock) finish. The latter means the finished cases are not bead-blasted but treated in a traditional process which gives them the appearance of new factory cases that had been sitting on the shelf for 50 years. Perfect for those "patina restorations".
All cases feature laser-engraved CB production numbers, which are registered and filed.
Aluminum Cylinder Heads
Samwel WLDR Cams for W-Series
Have any questions?
Our service team will be glad to help out: Mondays - Thursdays 09:00-16:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: firstname.lastname@example.org