Engine: 140 1986cc B20B: - engine year/model I.D.

donlan · Aug 12th, 2016, 00:37

Hello,I had a go at sending this earlier. I don't know if it worked or not ...so I will send it again.sorry. I am trying to I.D.some motors/blocks that I have. B20 8041 2823: 49 1000214, B20 8258 4450: 49 1-100000?, B20 8258 2046: 49 11000006, B20 8258 11703: 49 1000197, B20 4969 46 842: 1-419308, B20 050 113791: s7 1-419903, Oh and one B21 498308 00668: 1000123, Thank you,regards,Michael.(From the land of the the BIG furry hopper).

Volvorama · Aug 14th, 2016, 11:23

Initial thoughts are that there are only 2 types of B20 block.
- Early, much more common type with the 6 bolt crankshaft
- Later (73-75) with the 8 bolt crank sharing parts with the overhead cam engine.
I think the 2 types use different crankshaft bearings so are not interchangeable. Otherwise these engine blocks should be the same for B20A/B/E/F but please get confirmation of this.
The only oddity I can think of immediately is that a B20E or F has a 'thermal timer' screwed into the block near the oil filter but I think that all blocks have the bolt hole it uses.
Cylinder heads vary of course.

donlan · Aug 15th, 2016, 08:28

Mark, Thank you for your input,much appreciated,but a year i.d.would be good.Michael.

donlan · Aug 24th, 2016, 07:31

Hello,Is there somewhere else I should shift this thread to to get some information OR is the information just not available!Regards,Michael.

Aug 12th, 2016, 00:37	#1
donlan New Member Last Online: Sep 21st, 2016 08:12 Join Date: Jul 2016 Location: Batemans Bay.	engine year/model I.D. Hello,I had a go at sending this earlier. I don't know if it worked or not ...so I will send it again.sorry. I am trying to I.D.some motors/blocks that I have. B20 8041 2823: 49 1000214, B20 8258 4450: 49 1-100000?, B20 8258 2046: 49 11000006, B20 8258 11703: 49 1000197, B20 4969 46 842: 1-419308, B20 050 113791: s7 1-419903, Oh and one B21 498308 00668: 1000123, Thank you,regards,Michael.(From the land of the the BIG furry hopper).

Aug 14th, 2016, 11:23	#2
Volvorama Too many cats Last Online: Aug 24th, 2023 09:02 Join Date: Aug 2011 Location: Birmingham	Fairly simple? Initial thoughts are that there are only 2 types of B20 block. - Early, much more common type with the 6 bolt crankshaft - Later (73-75) with the 8 bolt crank sharing parts with the overhead cam engine. I think the 2 types use different crankshaft bearings so are not interchangeable. Otherwise these engine blocks should be the same for B20A/B/E/F but please get confirmation of this. The only oddity I can think of immediately is that a B20E or F has a 'thermal timer' screwed into the block near the oil filter but I think that all blocks have the bolt hole it uses. Cylinder heads vary of course. __________________ Mark

Aug 15th, 2016, 08:28	#3
donlan New Member Last Online: Sep 21st, 2016 08:12 Join Date: Jul 2016 Location: Batemans Bay.	Mark, Thank you for your input,much appreciated,but a year i.d.would be good.Michael.

Aug 24th, 2016, 07:31	#4
donlan New Member Last Online: Sep 21st, 2016 08:12 Join Date: Jul 2016 Location: Batemans Bay.	Hello,Is there somewhere else I should shift this thread to to get some information OR is the information just not available!Regards,Michael.

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