BenzWorld Senior Member
Date registered: Jan 2005
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RE: Someone who knows the '71 300 SEL
Have a look at the 3.5 photo i posted in the gallery section here.I had three,all running etc,(iknow people who have more !).The main thing is keeping the service up to scratch,the previous guy sounds like a rarity today.I do my own work as it's a hobby thing,and i feel these 109's are simple anyway.
If your dads car is sagging,it won't be a bag problem,more likely to be a valve.i check them by lifting the car up to full height and spraying soapy water all ovewr the valves.any little leak will show immediatly.It's a simple system.three height valves and a main valve under the hood.with a rubber bellows on each corner.
There is also a little bottle arangment on the inner fender which you fill with metholated spirits,or athonol.It keeps the air system dry and protects the valves.
Neil Dubey at star motors is the world Authority on valves and things and sells rebuilt valves for a fraction of the new price.
I'm rebuilding a 6.3 at present and have a 3.5 with severe rust which i'm going to use as a donor car for a V8 into a finny.[8D]
The fuel injection is a nice simple set up which needs to have the filter changed as often as the plugs ,even anually.Injectors will out last the car,and can be removed easily and cleaned with an ultrasonic cleaner.
These were among the most expensive cars in the world in their day and are considered to be very KOOL [8D]by a lot of younger folk.Look after your dad and his car,you won't regret it [:D]