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Timing marks on both timing cover and crank pulley

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Timing marks on both timing cover and crank pulley #1
59MGAToolGuy Stavros C Annapolis, MD, USA Sign in to contact 1959 MG MGA	Topic Creator (OP) Apr 15, 2024 12:14 PM Joined 6 years ago 75 Posts

I have, what I think, is an MGB timing cover and crank pulley on my 1500 MGA.

My question is what are the degrees of the timing marks on both the cover and pulley

Stav

IMG_1163.jpeg 24.3 KB

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Re: Timing marks on both timing cover and crank pulley #2
riley1489 Bruce H Great White North, QC, Canada Sign in to contact 1953 Jaguar XK120 1959 Riley 1.5 "King George" 1973 MG MGB	Apr 15, 2024 12:18 PM Top Contributor Joined 12 years ago 26,326 Posts

Life's most persistent and urgent question is, "What are you doing for others?"

BH_timing advance.JPG 29.8 KB

BH_T-marks.JPG 36.6 KB

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Re: Timing marks on both timing cover and crank pulley #3
59MGAToolGuy Stavros C Annapolis, MD, USA Sign in to contact 1959 MG MGA	Topic Creator (OP) Apr 15, 2024 12:27 PM Joined 6 years ago 75 Posts

So if I understand the graphic, the pointers register BTDC, and my picture shows me at 20* BTDC.

Stav

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Re: Timing marks on both timing cover and crank pulley #4
riley1489 Bruce H Great White North, QC, Canada Sign in to contact 1953 Jaguar XK120 1959 Riley 1.5 "King George" 1973 MG MGB	Apr 15, 2024 01:32 PM Top Contributor Joined 12 years ago 26,326 Posts

In reply to # 4785406 by 59MGAToolGuy So if I understand the graphic, the pointers register BTDC, and my picture shows me at 20* BTDC.

Life's most persistent and urgent question is, "What are you doing for others?"

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Re: Timing marks on both timing cover and crank pulley #5
59MGAToolGuy Stavros C Annapolis, MD, USA Sign in to contact 1959 MG MGA	Topic Creator (OP) Apr 15, 2024 01:35 PM Joined 6 years ago 75 Posts

Got it, thanks. Car runs well at 7*BTDC static now.

Stav

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Re: Timing marks on both timing cover and crank pulley #6
B-racer Jeff Schlemmer Shakopee, MN, USA Sign in to contact 1950 Willys Jeep Pickup "Ratrod" 1964 Land Rover Series IIA 1971 MG MGB	Apr 15, 2024 03:39 PM Top Contributor Joined 17 years ago 20,019 Posts

Add a mark on the pulley that lines up with the TDC mark when you have the original TDC mark lined up at 14 BTDC. Now you can use that mark on the pulley to line up with the 20 degree mark on the cover to get yourself set up to an appropriate 34 degrees total timing. Your car will run hot going down the road at 7 degrees static. With stock advance springs in an MGA, you'll likely only have 24-28 degrees total timing (not including vacuum advance). Make sure to disconnect that line to set this up. It'll be worth the effort!!!

jeff@advanceddistributors.com

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