MG T-ABC
http://www.mg-tabc.org/forum/

MPJG Fastener Size
http://www.mg-tabc.org/forum/viewtopic.php?f=2&t=1033
Page 1 of 1

Author:  Steve Simmons [ Thu May 09, 2019 1:24 pm ]
Post subject:  MPJG Fastener Size

As I recall, the threads on an MPJG are the same "mad metric" as XPAG. 8x1.0mm, etc. Can someone confirm that I'm remembering correctly? I'm away from the engine at the moment and need to order a few things, namely rear bolts.

Author:  frenchblatter [ Thu May 09, 2019 3:11 pm ]
Post subject:  Re: MPJG Fastener Size

Steve, as far as I'm aware all MG (and athers) were metric threads with Whitworth spanner sizes. The tooling folowed on from Moriis's purchase of Hotchkiss engines after the first world war (The factory was set up in the uK to keep it away from the Germans)

Author:  Steve Simmons [ Thu May 09, 2019 3:21 pm ]
Post subject:  Re: MPJG Fastener Size

Not all M.G. engines were Metric, but I know those around the WWII era were. I just can't remember if there were exceptions in the early 30s. I'm pretty sure the MPJG was though. I'll be able to measure tonight if need be.

Author:  martinjames [ Sun May 12, 2019 11:30 am ]
Post subject:  Re: MPJG Fastener Size

There is quite a mixture of threads on the MPJG. For instance the fan is held on with four 2BA bolts.

Author:  Steve Simmons [ Mon May 13, 2019 4:34 pm ]
Post subject:  Re: MPJG Fastener Size

Confirmed, rear bolts are 8mm x 1.0mm

Author:  cdrolshagen [ Mon May 13, 2019 11:21 pm ]
Post subject:  Re: MPJG Fastener Size

Hi Martin,
no, the fan is held by 4 bolts M5 x 0,75 mm, a very odd thread,
cheers Carl

Author:  Steve Simmons [ Tue May 14, 2019 9:41 am ]
Post subject:  Re: MPJG Fastener Size

Anyone know the timing cover thread size on MPJG?

Author:  Bill Davis [ Wed May 22, 2019 7:12 am ]
Post subject:  Re: MPJG Fastener Size

Steve,
I’m a little late in finding this but according to a list compiled by Bob Butson the MPJG Timing Cover uses 8 - 1MM 3/4” long bolts. He also gives part numbers from Moss (320-260) and Abingdon Spares (Use 3 - 39).
Cheers,
Bill

Author:  Bill Davis [ Wed May 22, 2019 7:46 am ]
Post subject:  Re: MPJG Fastener Size

Steve,
In another doc I’ve found Bob Butson lists this:
Timing Chain Cover, eleven used:
cover to front mounting plate……...Five used……….M8x1, length 13mm. Bolt 5mm unthreaded. Head size 5/16 BSF.
cover through front mounting plate..Three used……..M8x1, length 15mm. Bolt 5mm unthreaded. Head size 5/16 BSF. (Nuts used)
cover through to block…………….Three used…. … M8x1, length 20mm. Bolt 5mm unthreaded. Head size 5/16 BSF.

I was thinking that they weren’t all the same length, as mentioned earlier, and this confirms.
Bill

Author:  Steve Simmons [ Wed May 22, 2019 9:42 am ]
Post subject:  Re: MPJG Fastener Size

Thanks Bill! I don't know why I was thinking the timing cover bolts were smaller than 8mm.

Page 1 of 1 All times are UTC - 8 hours
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/