Gen/waterpump belt

[Bobbydsport]

Hi Guys, I'm new to the forum but not new to Healeys. My first car in 1959 was a '56 BN2. Then in '63 when still in the service I had another '56 BN2. Got married in '65 & sold the BN2 for honeymoon money.Still have the same wife & finally got back into a Healey. It's a '67 BJ8 second series.I'm going thru the mechanics to make it more road worthy & while replacing the generator belt which is suppose to be 1/2" wide I noticed the old one was 3/8"wide. The new belt fits the pulley on the crank & the one on the water pump but its obvious that the pulley on the Generator wants a 3/8" belt as the 1/2" one is raised above the edges of the pulley about 1/16th of an inch. My question is do you think the belt will be thrown off down the road or stay on. I know the best solution is to change the pulley on the Generator which I will do eventually. Just wondering about in the short term. Thanks for any input.

Bobbyd

 

[Keoke]

No it will not come off the pulley.
But it may compound the generator charging at idle problem, it will slow the generator down-:friendly_wink:

 

[Bobbydsport]

Thanks Keoke, so noted. Best to correct it sooner than later.

Bobbyd

 

[Legal Bill]

Hey, I could use that pulley. Are you running the later style generator with the larger shaft?

 

[Bobbydsport]

Bill I don't really know what gen I'm running. I've only had the car a couple months & am trying to sort things out. The gen has a tag on it that says made in UK & dated 1997. It appears to have a 3/8" pulley on it as noted in my first post.

Bobbyd

 

[Keoke]

Bill I don't really know what gen I'm running. I've only had the car a couple months & am trying to sort things out. The gen has a tag on it that says made in UK & dated 1997. It appears to have a 3/8" pulley on it as noted in my first post.

Bobbyd

There is a model number stamped into the case of that dynamo.

 

[Bobbydsport]

Keoke, There is a number stamped into the case next to the name Lucas, it is 62. Then there is a tag pasted on the dynamo that says "type 22900". I haven't removed the dynamo so I don't know if there are any other markings on the bottom side of it. Make any sense? Thanks,

Bobbyd

 

[andrea]

Keoke, There is a number stamped into the case next to the name Lucas, it is 62. Then there is a tag pasted on the dynamo that says "type 22900". I haven't removed the dynamo so I don't know if there are any other markings on the bottom side of it. Make any sense? Thanks,

Bobbyd

Bobby
Type 22900 generator is the correct dynamo for your car - unfortunately I am unable to find LUCAS class- probably the CV42 PVC
that have 35 A 12V capacity- Shaft diameter 17mm
The only trace that I have find
"The dynamo was type C45PV5 on the 100-Six, C45PV6 on the Mark I and II, and C42PVC on the Mark III."

NOTE power requirement have a dramatically increasing in the time-
our AH cars require 200/300 watts -Actual cars requirements are more than 2000/2500 watts (MIT article)

 

[Bobbydsport]

andrea, thank you very much for the info. I think that perhaps someone in the past has possibly put the wrong size pulley on this dynamo.I'm going to continue checking.

Bobbyd

 

[Legal Bill]

I think that is the pulley I need. Is it cast metal or pressed steel? I may have the pulley you need for your 1/2 inch belt.

 

[Legal Bill]

Bobby,

BJ-8 phase 2 cars came with different pulleys, a 3/8 pulley for the early phase 2 cars and a 1/2 inch pulley for the later phase 2 cars. The 3/8 pulley was part number AEC 2078 which was fitted to cars with engines in the range of 29K/H101 to 10271 (my engine is in this series). The second was part number 12B701 and was fitted to engines number 29K/H10272 on. The second pulley is for the 1/2 inch belts. There were also engines with prefixes of 29 KF and 29KFA that I am omitting so let me know if you have one of those. Sadly, the pulleys usually do not show the part number. I "may" have the right one for your car that I would be happy to send you. If it is correct, you can send me yours. If it is not correct, I will buy yours once you get the correct one for your car. The 1/2 inch pulleys are pretty easy to find.

Let me know.

Best regards,

Bill

 

[Legal Bill]

Oh well. Hope i didn't scare him away.

 

[Bobbydsport]

Bill, sorry, but I haven't been at the computer. Grand daughters recital & working in the garage. I have no problem trading pulleys with you if the one you have is correct for my car & vice versa. Let me do a little checking with my buddy at the Healey Surgeons in Md & I'll get back to you.No need for both of us to have the wrong pulley.Take care & stay safe.

Bobbyd

 

[Legal Bill]

Thanks Bobby. If they can just sell you the one you need, I'll buy yours.