Need some words of wisdom from you all out there, in order to minimize a single point of failure on the road.

I just purchase a 1987 420 SEL, with a bad engine. I purchase a replacement engine and beforeI put that bad boy back in the 420, I want to replace some stuff (the rear engine seal, oil pan gasket) please tell me if I missed anything else. I want to ensure that I don't have tohave amechanic to go back replace some stuff.

I would need to know how much grease for example(and the best type of grease)I would needput on the rear engine seal anddo I need any special tools. I have the MB 126 manual and it talks about applying grease according to the226 something specification as I recall. Any help would greatly be appreciated. BTW, I'm replacing everything hoses, gaskets,plugs and fuilds (oil andtrans).

Afterward, it going to the shop to ensure thatshe going to run perfectly and apaint job.

 

the only other advise I can give you is to take off the valve covers and inspect the timing chain and guide rails if you do not know the history of the engine you are going to use. if they are a dark orange color or have any noticeable cracks you should replace everything. if thechain guid should fail it will destroy the engine.you may also want to keep any and all parts from the old engine as spares if you have a place to keep them. I bought my 86 420 about 2 months ago and just spent $1,400 to get the chain, guides, water pump, belts, hoses and some other stuff replaced. so its a good Idea to check it out before you install the engine.

 

Thanks for the advice, yes I plan on rebuild that 420 engine to have as a space. Who knows I may pickup another 420 for my daughter since she likes the 420 I currently have in thegarage.

 

MBENZ300SD,

Did actually what you recommended and sure enough one of the rail guide were broke in the compartment, its off to the shop for replacements of the rail guide and everything else in the engine compartment.