BMW S38 Timing Chain: Performance, Lifespan & Maintenance Guide

The BMW S38 engine’s timing chain is a critical component ensuring precise valve and piston synchronization, directly influencing engine efficiency and longevity—making proper maintenance essential for peak performance.

The S38’s timing chain connects the crankshaft to the camshaft(s), driving valve operation with high tensile strength and minimal stretch. Unlike belt-driven systems, chain drives eliminate tension adjustment needs but require regular inspection for wear, corrosion, and lubrication to prevent premature failure and costly engine damage.

Designed for durability under high revving and load, the S38 timing chain maintains consistent timing even during aggressive driving. When properly maintained with correct oil and timely replacement, it sustains engine power delivery and reduces the risk of timing misalignment, which can cause severe internal damage in BMW’s high-performance engines.

Regular oil changes using manufacturer-recommended viscosity are vital to keep the chain lubricated and corrosion-free. Inspect for wear marks, stretching, or noise every 60,000–100,000 miles. Early detection and proactive replacement prevent catastrophic failure, ensuring the longevity and reliability of the S38 engine.

The BMW S38 timing chain is engineered for precision and durability, but consistent maintenance is key to preserving its performance. Prioritize timely inspections and proper lubrication to maximize engine life and reliability—keeping your BMW running at its best for years to come.

Re: S38 Timing Chain DIY with pictorials by 1st 5er May 18, 2015 9:26 AM Nicely done Pavel, except for the couple grammatical errors, enjoy Shawn D., and thanks a million, about what those few parts cost, for the time and energy spent in both preparation and execution. High Quality Genuine & OEM BMW parts. Free Shipping and available now! See OE cross references for KIT-S38TIMINGKIT1.

Includes FCP's Lifetime Warranty & Unlimited 365 Day Returns. BMW E28 M5 S38 3.5L Engine Timing Parts 1 2 3 Next Page Chain Tensioner Cover Gasket Gears Guide Rails Seal Timing Chain VANOS Sort By Return to Top. This is a guide to help you replace the timing chain components in your s38b36 powered BMW M5.

It should be very similar procedure on the s38b35 found in e24. Now I also noticed that timing chain components are worn and thus need to be replaced as well. I made a list of parts which I plan to purchase for the timing chain rebuild.

Could someone take a look and check if I don't miss anything? Timing cover gasket left 11141726731 Timing cover gasket right 11141726733 Timing cover seal 11141715100 /. Find many great new & used options and get the best deals for TIMING CHAIN 25372 FOR BMW S38B36 3.5L S38B38 3.8L S38B35AF 3.5L S50B30 3.0L at the best online prices at eBay! Free shipping for many products! Re: S38 timing chain assessment by sharkfan Fri Mar 15, 2019 10:51 pm If it's an American spec 'M6' with 256bhp then it is indeed the S38B35 engine.

Euro/rest of the world got the 286bhp 'M635CSi' cars with the M88/3 engine. Here you not only have chain lash, but also the risk of timing chain breakage because of the increased mechanical load which weakenes the chain. That is why with the introduction of the S38B36 in 9/1988, BMW switched to a duplex timing chain for the entire S38 and M88 engine family which where at that time still in production.

Stay ahead of catastrophic engine failure with timing chain kits featuring OEM timing chain parts or aftermarket timing chain parts from suppliers you know and love. Explore our full timing chain service kits that include everything you need to take the job from start to finish and get back to enjoying your car on the road rather than in the. S14 S38 Timing Chain Tensioner Rail (Small).

We typically see this in need of replacement in the 80-100,000 mile mark. We recommend replacing this when you replace your timing chain or when performing an engine rebuild. This item fits the following BMWs: 1987.