Oil Pan Comparison

Since some engines don't have an oil pan suitable for the 335i conversion installed, one from the e34 535i or e32 735i is to be used.  In the case of these oil pans the reservoir is shifted somewhat further forward and is slightly flatter.  These changes are key to the 335i conversion, as they allow for a lower and slightly more rearward engine position to be used     Fig.: Comparison of the e23 and e34 oil pans

Oil Pump from the e34 M30  

	The oil pump from the new oil pan must also be used.  The pickup of the original pump is too far rearward to function properly with the new pan.   Fig.: e23 oil pump
	The pickup is the only part that distinguishes these two pumps. It would be possible to simply change the pickup of the old pump over to that of the new pump.  During this stage the parts of the pump are to be thoroughly cleaned and checked for wear.  If the engine had sustained any significant internal damage often the oil pump will show significant scoring and the rubber seals will be melted (as was the case in Tino's 335i). Fig.: e34 and e23 oil pumps disassembled
	To avoid any future problems with the oil pump and engine a complete new pump was used in this conversion.                                                                                                                              Fig.: e34 oil pump

Oil Pump Chain and Chain Tensioner

	In these newer engines a separate oil pump chain tensioner was installed .  The play and noise of the chain in the older engines was rather annoying.  In these cases it is recommended that a tensioner from the newer engine be installed.   Fig.: e34 chain tensioner on an e34 block
	In the case of Tino's conversion, the tools were not accessible to complete the installation of the tensioner.  In such cases it is acceptable to not use this part.  It is only a recommended item, it is by no means necessary.     Fig.: e34 530i oil pump and chain installed (without chain tensioner)

Questions, Comments?