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#1
02-20-2008, 10:29 PM
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86 420sel timing chain
I am replacing the timing chain, guide rails, tensioners and I few bent valves. The motor jumped time. I don't know any other details. I bought the car like that. I know the chain was replaced before but not the rails, thus the problem. I was wondering in removing the head I know I have to heli-coil the bolt holes, but I was told there a sort of "jig" I need to redrill the holes. Is this true? If so how do I get one? Also do I need to replace the head bolts to, do they stretch like on a Cadilliac Northstar? also I will order a new chain rails, and a head gasket set, is there anything I should look at replacing while doing this? or is there any other speical info I need to accomplish this task? I have done many timing chains and head gaskets before just never on an MB. Thank you for your time
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#2
02-21-2008, 12:28 PM
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Sounds like you need to get the factory service manual. Call 1-800-FOR-MERC(EDES) to order. It's about $20 last I heard and could save you a whole lot of headache$.
__________________
Len '59 220S Cabriolet-SOLD and living happily in Malta '83 240D 351,500 miles original owner-SOLD '88 560SL 41,000 miles - totaled and parted out https://sites.google.com/site/mercedesstuff/home '99 E300 turbo 227,500 miles '03 SLK320 40,000 miles - gave to my daughter '14 Smart electric coupe 28,500 miles '14 Smart electric cabriolet 28,500 miles '15 Smart electric coupe 28,000 miles 
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