PDD Chromoly Spring Retainers & Locks for Cummins 89-98

PDD Chromoly Spring Retainers & Locks for Cummins 89-98

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$210.00
$210.00

Power Driven Diesel's Hardened Chromoly Valve Spring Retainers are the best way to maximize the performance of 60-lb valve springs.

These hardened chromoly spring retainers for 60-lb valve spring retainers are precision machined from chromoly steel before hardening. They feature 10-degree locks and a structurally efficient design. One of the key advantages of these retainers is their ability to handle high speeds. With a capability of up to 4,200 rpm, they provide reliable and durable performance. They are remarkably lightweight, weighing just 30 grams. In fact, they are 25% lighter than the stock retainers commonly found in similar setups.

Installing these hardened chromoly spring retainers on a typical 12v head increases seat pressure slightly. Compared to the factory lock-and-retainer configuration, which results in approximately 155 lbs of seat pressure, these retainers offer approximately 165 lbs of seat pressure. This enhanced pressure contributes to improved valve control and overall engine efficiency.

Break-In Procedure

  • Apply Cam Lube on all lobes, lifter faces, distributor gears, and oil pump gears.
  • Oil all bearing journals and lifter barrels.
  • Always turn the engine over by hand before starting. Check for clearances and proper timing location.
  • Fire up to 1800 – 2000 RPM for 18 – 20 minutes.

Note: Most oil companies have taken
out a percentage of additives that are meant for anti-scuffing for the break-in on flat tappet cams, so please ask your local auto parts
professional for the best zinc additive they have and add it to your oil before you fire up your engine for the first time (we prefer ZDD
Plus.) You can also order specialty oil from Power Driven Diesel here.

PDD Chromoly Spring Retainers & Locks for Cummins 89-98

$210.00