« previous next »
Pages: [1]

Author Topic: Fuel Injectors  (Read 8245 times)

mfriedman

  • Guest
Fuel Injectors
« on: February 13, 2011, 23:32:49 »
My 1965 230sl has the DC8C45R2 fuel injectors. The tech. manual says I should have the R1 injectors. Can anyone tell me the difference and can I still use the R2's in my 1965 230sl or do I need to replace with R1's, and recommendation as to best place to purchase the R1's.
Logged

66andBlue

  • Full Member
  • Platinum
  • ******
  • USA, CA, Solana Beach
  • Posts: 4728
Re: Fuel Injectors
« Reply #1 on: February 14, 2011, 00:16:35 »
The R1 injectors are NLA, so stick with the ones you have.
Logged
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

Garry

  • Full Member
  • Platinum
  • ******
  • Australia, Victoria, Kyneton and Brisbane Queensland
  • Posts: 5212
  • Audit Committee
Re: Fuel Injectors
« Reply #2 on: February 14, 2011, 02:46:09 »
Talking about fuel injectors, if I remove my fuel lines from the injector pump to the cylinders to replace them with nicer clean plated ones will I then have to bleed the lines or will it pump up to pressure and hopefully start when I turn it over?
Logged
Garry Marks
Melbourne/ Kyneton, Brisbane. Australia
1969 MB 280SL 5 speed RHD SOLD.
1965 MB 230SL Auto RHD Lt Blue 334G, Top 350H, 213 Leather, Tourist Delivery.
1972 MB 280CE Auto RHD 906G Blue Grey
2005 MB A200.
2006 MB B200
2019 Izuzu DMax 4x4 with Slide-on camper.
2022 Volvo XC40 Twin Electric

ja17

  • Full Member
  • Platinum
  • ******
  • USA, OH, Blacklick
  • Posts: 7380
Re: Fuel Injectors
« Reply #3 on: February 14, 2011, 03:17:53 »
Hello Gary,

Eventually the lines would  self bleed after  lots and lots of cranking.............
However, to save wear and tear on the starter, I would remove all the spark plugs and loosen all lines at the injectors prior to cranking the engine. Make sure you apply full throttle while cranking the engine. As fuel emerges at each line, tighten it up. When all are primed, install the plugs and fire it up.
Logged
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

Garry

  • Full Member
  • Platinum
  • ******
  • Australia, Victoria, Kyneton and Brisbane Queensland
  • Posts: 5212
  • Audit Committee
Re: Fuel Injectors
« Reply #4 on: February 14, 2011, 03:56:51 »
Thanks Joe,

Hope to catch up again this year at PUB
Logged
Garry Marks
Melbourne/ Kyneton, Brisbane. Australia
1969 MB 280SL 5 speed RHD SOLD.
1965 MB 230SL Auto RHD Lt Blue 334G, Top 350H, 213 Leather, Tourist Delivery.
1972 MB 280CE Auto RHD 906G Blue Grey
2005 MB A200.
2006 MB B200
2019 Izuzu DMax 4x4 with Slide-on camper.
2022 Volvo XC40 Twin Electric

J. Huber

  • Full Member
  • Platinum
  • ******
  • USA, CA, Cedar Ridge
  • Posts: 3061
Re: Fuel Injectors
« Reply #5 on: February 14, 2011, 14:18:42 »
Hey Mfriedman. You wouldn't happen to have a black Pagoda would you? Just curious because another member from your area (Donati - Arroyo Grande) mentioned he spotted one the other day. In any event, you guys should touch base, He has a great looking car!
Logged
James
63 230SL

mfriedman

  • Guest
Re: Fuel Injectors
« Reply #6 on: February 14, 2011, 18:07:46 »
Quote from: 66andBlue on February 14, 2011, 00:16:35
The R1 injectors are NLA, so stick with the ones you have.

Thank you!
« Last Edit: February 14, 2011, 22:11:30 by Peter van Es »
Logged

mfriedman

  • Guest
Re: Fuel Injectors
« Reply #7 on: February 14, 2011, 18:14:57 »
Quote from: J. Huber on February 14, 2011, 14:18:42
Hey Mfriedman. You wouldn't happen to have a black Pagoda would you? Just curious because another member from your area (Donati - Arroyo Grande) mentioned he spotted one the other day. In any event, you guys should touch base, He has a great looking car!

My car is Red, but I would like to touch base with Donati in AG. Do you have his e-mail?
« Last Edit: February 14, 2011, 22:11:58 by Peter van Es »
Logged

J. Huber

  • Full Member
  • Platinum
  • ******
  • USA, CA, Cedar Ridge
  • Posts: 3061
Re: Fuel Injectors
« Reply #8 on: February 14, 2011, 19:18:47 »
Well, maybe its best he responds with it if he sees this thread (but I will mention you can find him in the members list and send him a message...) I think there may even be a couple other owners not far away, as well.
Logged
James
63 230SL

jacovdw

  • Guest
Re: Fuel Injectors
« Reply #9 on: February 15, 2011, 17:28:02 »
Quote from: mfriedman on February 13, 2011, 23:32:49
My 1965 230sl has the DC8C45R2 fuel injectors. The tech. manual says I should have the R1 injectors. Can anyone tell me the difference and can I still use the R2's...

Martin,

Like Alfred has mentioned, the R1 injectors are NLA (no longer available) and the R2 injectors are what Mercedes (and Bosch) now supplies.

From the perspective of your 230SL's fuel injection pump, there is no difference between the R1 and the R2 injectors as the opening pressure of both injectors is the same.
The opening pressures are as follows:
a) 17.5 to 18.5 atm. for new injectors
b) 15.0 to 18.5 atm. for used injectors

The most important thing to note is that the differences in opening pressure of individual injectors should not exceed 3 atm.

In 2008 I replaced all my injectors in my 1964 230SL with a set of R2's and have had no problems whatsoever.
Logged
Pages: [1]
« previous next »