Is your Lotus Esprit leaking oil from the filler cap?
Are you unable to obtain a replacement or repair the original cap?
Then look no further as Lotus Marques has manufactured a faithful reproduction of the original cap.
This highly polished alloy cap screws into an alloy insert and is guaranteed not to leak as it has an integral oil seal located in the cap.
In comparison, the original oil filler cap is different in design and has a simple “twist and lock” action to secure it.
This is achieved by a concealed spring and two small protruding pins located inside the oil filler opening.
Also concealed in the underneath of the cap is a rubber sealing washer that is intended to provide an oil tight seal.
With the passage of time these caps have seen significant service and have developed various problems.
This includes - broken internal spring clips, broken cam cover locking pins and a faulty or worn rubber sealing washer.
These problems usually culminate in a poorly sealing cap and resultant oil leak.
Unfortunately these caps are difficult to repair and the original part (Lotus Part number A026E0415) is now obsolete from the Lotus Factory.
The alloy cap is supplied with a simple threaded insert that may easily be installed in the cam cover of the Lotus Esprit S1, S2 or S3.
Be aware of alternative copies of this alloy oil filler cap that do not supply a threaded insert and rely on the original steel pins to secure the cap.
Screwing an alloy cap on to hardened steel pins is guaranteed to shave off aluminium particles that will fall off into the cam gear directly below.
These same aluminium particles will circulate in the engine oil and cause damage to internal components.
Installation of the new cap
The recipient cam cover needs to have the internal locking pins removed and the oil filler opening machined to accept the insert.
The insert should be a light interference fit and be installed with Loctite 620.
Once the Loctite has cured, the polished cap is simply screwed into the cam cover where it takes on the appearance of the original stainless steel item.
If required, a full machining and installation service can be provided at additional cost.
Are you unable to obtain a replacement or repair the original cap?
Then look no further as Lotus Marques has manufactured a faithful reproduction of the original cap.
This highly polished alloy cap screws into an alloy insert and is guaranteed not to leak as it has an integral oil seal located in the cap.
In comparison, the original oil filler cap is different in design and has a simple “twist and lock” action to secure it.
This is achieved by a concealed spring and two small protruding pins located inside the oil filler opening.
Also concealed in the underneath of the cap is a rubber sealing washer that is intended to provide an oil tight seal.
With the passage of time these caps have seen significant service and have developed various problems.
This includes - broken internal spring clips, broken cam cover locking pins and a faulty or worn rubber sealing washer.
These problems usually culminate in a poorly sealing cap and resultant oil leak.
Unfortunately these caps are difficult to repair and the original part (Lotus Part number A026E0415) is now obsolete from the Lotus Factory.
The alloy cap is supplied with a simple threaded insert that may easily be installed in the cam cover of the Lotus Esprit S1, S2 or S3.
Be aware of alternative copies of this alloy oil filler cap that do not supply a threaded insert and rely on the original steel pins to secure the cap.
Screwing an alloy cap on to hardened steel pins is guaranteed to shave off aluminium particles that will fall off into the cam gear directly below.
These same aluminium particles will circulate in the engine oil and cause damage to internal components.
Installation of the new cap
The recipient cam cover needs to have the internal locking pins removed and the oil filler opening machined to accept the insert.
The insert should be a light interference fit and be installed with Loctite 620.
Once the Loctite has cured, the polished cap is simply screwed into the cam cover where it takes on the appearance of the original stainless steel item.
If required, a full machining and installation service can be provided at additional cost.
These oil filler caps have been carefully designed and manufactured in Australia using an Okuma CNC machine.