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Old 02-05-14, 04:47 PM   #1
Nev B
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Default Injector settings needed

Here is the injector from my Thornycroft it is a CAV Bosch it is marked
BKB35S24 , a friend is going to service it and check the pressure setting on it , he has asked if I can find out what the setting would be , can anyone advise please ?
I don't know if this is relevant , the bore and stroke is 4 x 6 and it is indirect injection.
I don,t know what year the engine is but I think BK in the injector number means its 1944 .
The engine will run but the speed keeps dropping off.
Nev


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1940s Stuart Turner HY1
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Petter Mini Twin marine
Thornycroft DB2 Handybilly marine
1917? Fairbanks Morse two stroke

Last edited by Nev B; 02-05-14 at 04:54 PM. Reason: Wrong date put in
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Old 02-05-14, 05:43 PM   #2
listerdiesel
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The Thorneycroft RJ2 is listed in the 1952-1955 and 1955-1957 CAV books.

Release pressure is 100 atmospheres or 1469psi.

The date code is a 2-character set, the SECOND letter is the year, R for 1950 through to Z for 1958 for example. The FIRST letter is the month.

The BK in the part number does not bear any relationship to the year code.

Peter
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Old 02-05-14, 06:17 PM   #3
Nev B
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Thanks Peter I shall pass that on
Nev
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1940s Stuart Turner HY1
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Petter Mini Twin marine
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1917? Fairbanks Morse two stroke
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Old 02-05-14, 06:34 PM   #4
jwood
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The Thornycroft factory data sheet for the RJ gives it as 175 atmos, rather different. Nozzle BDLL150S609

Just happen to be scanning some Thornycroft records/catalogues/manuals at the moment and scanned the data sheet about 30 minutes ago!

JW
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Old 02-05-14, 06:46 PM   #5
Nev B
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Hello JW PM sent
Nev
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1940s Stuart Turner HY1
45 hp Gray Marine
Petter Mini Twin marine
Thornycroft DB2 Handybilly marine
1917? Fairbanks Morse two stroke
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Old 02-05-14, 06:58 PM   #6
BILL GELDEARD
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Quote:
Originally Posted by jwood View Post
The Thornycroft factory data sheet for the RJ gives it as 175 atmos, rather different. Nozzle BDLL150S609

Just happen to be scanning some Thornycroft records/catalogues/manuals at the moment and scanned the data sheet about 30 minutes ago!

JW
I think that you will find that the BDLL Injectors are for the direct injection engine which is completely different to this engine.

Bill
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Old 02-05-14, 07:01 PM   #7
listerdiesel
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The nozzle listed in the CAV books is a BDN852, which is a flat-faced short stem nozzle, BDLL150S609 is a long-stem type used in the NR5 and RNR6 diesels.

The injector picture that Nev has posted shows a BDN type nozzle, not a BDLL type.

Peter
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Old 02-05-14, 08:40 PM   #8
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Quote:
Originally Posted by BILL GELDEARD View Post
I think that you will find that the BDLL Injectors are for the direct injection engine which is completely different to this engine.

Bill
Hi Bill,
Quite correct, had not looked at the pic, yes spec for the DI engine in 1956, different engine.

JW
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