Head identification

twc641 · Post by **twc641** » Mon May 08, 2023 12:30 am

I was told my engine has a stage 4 unleaded head ?
MOWOG number is a 998
What are the other numbers stamped on it?

Post by **timmy201** » Mon May 08, 2023 1:12 am

-2A964 is a standard rocker arm
-The STG 24708 could mean anything, it was added post factory. It could be the job number of the shop that modified it, maybe the combustion chamber cc or the amount skimmed from the face
-12G295 is a small bore head fitted to MG1100, 998 Cooper etc

twc641 · Post by **twc641** » Mon May 08, 2023 2:16 am

so this could be a stage 4 unleaded?

twc641 · Post by **twc641** » Mon May 08, 2023 2:23 am

looking a bit more closely after stg roman numeral lV ?

Post by **timmy201** » Mon May 08, 2023 3:25 am

The “stage number” will vary depending on who did the work, so being stage 3 or 4 isn’t a guarantee on what’s been done to it

winabbey · Post by **winabbey** » Mon May 08, 2023 5:18 am

Is that a crack in the rocker arm?

twc641 · Post by **twc641** » Mon May 08, 2023 11:57 am

I hope it's not a crack i will have a closer look.

twc641 · Post by **twc641** » Mon May 08, 2023 12:08 pm

Thanh you Timmy

Alex · Post by **Alex** » Tue May 09, 2023 9:45 am

STG III
I'd guess an old Stage 3 spec from someone.

mk1-forum.net

Head identification

Head identification

Re: Head identification

Re: Head identification

Re: Head identification

Re: Head identification

Re: Head identification

Re: Head identification

Re: Head identification

Re: Head identification