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What type engine do I have?


The engine ID tag on my BT7 is missing. Is there a way that I can tell the production number of my engine by looking at the other information on the engine block?

I see a 29 stamped on the side.

I noticed that my BT7 doesn't have a 10 inch clutch. Does this mean that I have an engine from a BJ8?
I measured the clutch at about 9.5 inches.


Great Pumpkin
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DanZ_BT7 said:
The engine ID tag on my BT7 is missing. Is there a way that I can tell the production number of my engine by looking at the other information on the engine block?----------)

Perhaps, on the engine block just below the exhaust manifold at the front of the engine there may be an aluminum tag inscribed with the engine number on it.

I see a 29 stamped on the side.

I noticed that my BT7 doesn't have a 10 inch clutch. Does this mean that I have an engine from a BJ8?----

Only if the engine ID tag defined above says 29K

I measured the clutch at about 9.5 inches.-------

Perhaps again since all BJ8's used the 9.5" clutch disk. However, some PO could have swaped only the tranny or the clutch parts.



That tag is missing. I ordered a 10 inch clutch but when I removed the existing clutch I noticed that it is much smaller (about 9.5 inches). I haven't investigated the transmission id tag yet. Maybe that is next.

I placed the 10 clutch onto the flywheel to see if it would fit. It doesn't fit. It doesn't fit due to pins on the flywheel that get in the way. That is why I think that I might have a different engine. Maybe someone replaced the flywheel with the clutch parts?


Great Pumpkin
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Maybe some one replaced the fly wheel with the clutch parts. Yes if a different clutch Has been installed it follows that the corresponding fly wheel be used.

How about the carbs on the engine are they very large and have black plastic tops that bear the number AUC 8112 on them??

Look on the top of the transmission bell housing on the outboard side do you see " 22B173" ? ?----------Keoke


Darth Vader

Bob Hughes

Luke Skywalker
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Bob's rule number one - do not take things at face value.

These cars are 40 plus years old and in my case have been roaming planet earth from continent to continent. I have a BJ7 and renewed the clutch earlier this year, I left the purchase of the new one until I got the old one off, primarily because I could not find the engine number, but as it happened it was 10 inch job as the good book would dictate.

I have discussed engines with my local chap and was present when a delivery of used engines from the Austin Westminster arrived at his place. At ÂŁ60 a throw it was a good investment for him, he would get one or two refurbished to Healey spec and slot them straight into a car that has come in for an engine rebuild - with the owners approval of course, as some Brits are keen as mustard in keeping all the numbers together if possible. His comment was that there are not that many cars out there that have the original engine and this comment has propted me to be careful when ordering engine parts etc.



Jedi Knight
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It is fairly simple to remove the number tag off one engine block and put it on a replacement. That certainly applies to the car body (vin) tags too. Therefore one should be careful. Things are not always as they first appear.


Darth Vader
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If there's any doubt about the correct vin number matching the car, you should remove the R/H front wheel and look for the vin ID number stamped on the shock tower. That would be the number hardest to change.
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