Author Topic: Wanted: R25 fuel injection pump  (Read 2419 times)

Berggreen

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Wanted: R25 fuel injection pump
« on: November 27, 2022, 17:37:49 »
Hello All

I  am interested in purchasing a late-European configuration 280SL injection pump of the type R25.

And I am interested in a R25 in any condition available.

If you have one, you want to sell, then please let me know.  :)

Best regards,
Christian

02/1971 MB 280SL (aut.) - olive green 291H
11/1970 MB 280SL (man.) - silver 180G
12/1977 MB 350SE (aut.) - deep green 825H
03/1969 Volvo 1800S (man.) - dark green 94

m300cab

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Re: Wanted: R25 fuel injection pump
« Reply #1 on: November 28, 2022, 15:54:50 »
email me at m300cab@gmail.com
i will send photos of the pump and plates
EP/RIA 1/18 R
81127671
Michael Parlato

Berggreen

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Re: Wanted: R25 fuel injection pump
« Reply #2 on: November 28, 2022, 17:52:12 »
email me at m300cab@gmail.com
i will send photos of the pump and plates
EP/RIA 1/18 R
81127671

Thanks, I will send you an e-mail. However, I believe the R25 is an EP/RLA 1/24 R pump.

But please send me some pictures.  :)
02/1971 MB 280SL (aut.) - olive green 291H
11/1970 MB 280SL (man.) - silver 180G
12/1977 MB 350SE (aut.) - deep green 825H
03/1969 Volvo 1800S (man.) - dark green 94

SEB

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Re: Wanted: R25 fuel injection pump
« Reply #3 on: December 12, 2022, 20:55:43 »
Maybe anyone from the readers here this know? In what American Mercedes models was the R28Y pump fitted to?
Sebastian
1967 250 SL, 4 Speed, Euro spec, Tunis beige (462H),

rwmastel

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Re: Wanted: R25 fuel injection pump
« Reply #4 on: December 12, 2022, 21:52:17 »
280SE is my guess.
Rodd

Did you search the forum before asking?
2017 C43 AMG
2006 Wrangler Rubicon
1980 450SL
1966 230SL

Berggreen

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Re: Wanted: R25 fuel injection pump
« Reply #5 on: December 12, 2022, 22:45:00 »
280SE is my guess.

Agree, and a very late one. Probably a w108 280SE 1972 model, just before the w116 launched.
02/1971 MB 280SL (aut.) - olive green 291H
11/1970 MB 280SL (man.) - silver 180G
12/1977 MB 350SE (aut.) - deep green 825H
03/1969 Volvo 1800S (man.) - dark green 94

SEB

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Re: Wanted: R25 fuel injection pump
« Reply #6 on: December 13, 2022, 09:30:32 »
Many thanks Gentlemans! As you know in the technical manual on this side the range ends on the R25 version.
Sebastian
1967 250 SL, 4 Speed, Euro spec, Tunis beige (462H),

Berggreen

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Re: Wanted: R25 fuel injection pump
« Reply #7 on: December 13, 2022, 10:26:34 »
Many thanks Gentlemans! As you know in the technical manual on this side the range ends on the R25 version.

Yes, and it also ignores the R24W, which was used exclusively on the Swedish market to meet new CO-based emission restrictions, coming into force there for the 1971 280SL model. The R24W was therefore needed to be much more refined and precise, compared to the other late 280SL pumps, like the R25 (general Euro+ market) and the R24Y (US market). It was also used in the 280SE, and it is therefore easier to find today than eg. the R25, due to the much lower numbers of Euro-spec late 280SL cars sold, compared to the Euro-spec 280SE and even the US-spec 280SL with the R24Y pump.

However, today with the many US-spec 280SL re-imported to Europe, many owners here want to get rid of the US-spec R24Y and replace it with something better and more precise, and here the R24W is a very good choice. Both because it was actually used in the 280SL on the Swedish market for the 1971 model, but also because it can be tuned very accurately to increase both power and fuel economy. So, I am puzzled why it is not mentioned at all in our manual (?).

I don't know much about the R28 though, and it could be interesting to look more into the details of this very late mechanical fuel injection pump for the w108 280SE, introduced just before Mercedes went all-in on the D-jetronic and later K-jetronic across their entire model fleet.

Cheers,

Christian
02/1971 MB 280SL (aut.) - olive green 291H
11/1970 MB 280SL (man.) - silver 180G
12/1977 MB 350SE (aut.) - deep green 825H
03/1969 Volvo 1800S (man.) - dark green 94

rwmastel

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Re: Wanted: R25 fuel injection pump
« Reply #8 on: December 13, 2022, 14:28:31 »
Yes, and it also ignores the R24W, which was used .... So, I am puzzled why it is not mentioned at all in our manual (?).
Christian,

You are a Full Member, so you have access to edit the Tech Manual.
Rodd

Did you search the forum before asking?
2017 C43 AMG
2006 Wrangler Rubicon
1980 450SL
1966 230SL

rwmastel

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Re: Wanted: R25 fuel injection pump
« Reply #9 on: December 13, 2022, 14:38:24 »
Many thanks Gentlemans! As you know in the technical manual on this side the range ends on the R25 version.
Sebastian,
I thought this was a trivia question and you knew the answer!   ;D
Rodd

Did you search the forum before asking?
2017 C43 AMG
2006 Wrangler Rubicon
1980 450SL
1966 230SL

Berggreen

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Re: Wanted: R25 fuel injection pump
« Reply #10 on: December 13, 2022, 14:58:49 »
Christian,

You are a Full Member, so you have access to edit the Tech Manual.

Great, I did not know that. Then I will see what I can do. Thanks for letting me know. :)
02/1971 MB 280SL (aut.) - olive green 291H
11/1970 MB 280SL (man.) - silver 180G
12/1977 MB 350SE (aut.) - deep green 825H
03/1969 Volvo 1800S (man.) - dark green 94

SEB

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Re: Wanted: R25 fuel injection pump
« Reply #11 on: December 13, 2022, 17:46:39 »
Christian, You are probably already looking for this FIP on the German market? Can you also try Pagodentreff to post an ad? If you know this forum?
https://www.pagodentreff.de/diskussionsforum/threads/suche-einspritzpumpe-pagode-280-sl.19568/
As you can see somebody from Switzerland also looks for a 280 SL pump.
Sebastian
1967 250 SL, 4 Speed, Euro spec, Tunis beige (462H),

MikeSimon

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Re: Wanted: R25 fuel injection pump
« Reply #12 on: December 13, 2022, 19:29:19 »
The R25 pump I have is an EP/RLA 1/34 R pump.

I also have a R24 pump for sale, if anybody is interested. I would like to get $1,200 including shipping in the U.S. I don't think shipping this out of the country makes sense because of cost.
1970/71 280SL Automatic
Sandy Beige
Parchment Leather
Power Steering
Automatic
Hardtop
Heated Tinted Rear Window
German specs
3rd owner

MikeSimon

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Re: Wanted: R25 fuel injection pump
« Reply #13 on: December 13, 2022, 19:31:48 »
R24 pump pics. I don't know what the condition is. Except for the "thermostat housing" connections it looks quite nice
Send me a e-mail to mike.simon70@yahoo.com
1970/71 280SL Automatic
Sandy Beige
Parchment Leather
Power Steering
Automatic
Hardtop
Heated Tinted Rear Window
German specs
3rd owner