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#1
02-04-2013, 12:52 PM
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Fuel Injection Pump differences R18 and R20
Hi
I discover that my 250SL (late) with engine nº003505 has a Bosch injection pump PES 6KL 70A120 R20 and not the PES 6KL 70A120 R18Z (or R18Y). 1- Should I remove the R20 and change it to a R18Z ? 2- What are the diferences? 3- Is it possible to adjust (convert) one R20 to work as R18Z ? The R20 was the pump for the 280SE a different engine. Many thanks Sérgio 
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#2
02-04-2013, 04:48 PM
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Check the engine number. If it's an M130, it's correct. If it's an M129, it's incorrect.
__________________
Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952.
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#3
02-04-2013, 04:59 PM
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Dear Warren
You are right, 003505 is the Chassis number. The engine number is 129982-10-001821. Can I change an R18Y for an R20 ? Regards
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#4
02-04-2013, 10:40 PM
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My technical data book for 1966 only had engine types 129.980 and 981. It does not list a 982. and does not have the 250SL. The sedan injection pump had the 18 suffix.
I suggest you go to Welcome - Mercedes Benz 230SL, 250SL, 280SL Pagoda Group and check the technical section or ask your question in the drivetrain subforum. I don't have that information and don't want to give you bad information.
__________________
Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952.
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#5
02-04-2013, 10:55 PM
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This page:
Pagoda SL Group Technical Manual :: Fuel / Injection shows the 280SL pumps as R20 and higher. Good luck.
__________________
Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952.
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