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Pagoda SL Group
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W113 Pagoda SL Group
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Drive train, fuel, suspension, steering & brakes
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Dimension of M129 Valve and Valve Stem
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Topic: Dimension of M129 Valve and Valve Stem (Read 1320 times)
Jack the Knife
Full Member
Silver
USA, FL, Vero Beach
Posts: 321
Dimension of M129 Valve and Valve Stem
«
on:
March 10, 2023, 23:25:40 »
Does anyone have these measurements handy for a port/polish job I'm outsourcing?
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1964 230SL
2015 G550
DaveB
Full Member
Gold
Australia, Western Australia, Lathlain
Posts: 953
Re: Dimension of M129 Valve and Valve Stem
«
Reply #1 on:
March 11, 2023, 01:57:32 »
valve specifications
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DaveB
'65 US 230sl 4-speed, DB190
Jack the Knife
Full Member
Silver
USA, FL, Vero Beach
Posts: 321
Re: Dimension of M129 Valve and Valve Stem
«
Reply #2 on:
March 11, 2023, 02:35:55 »
Perfect! Thank you, Dave! The 250SE specs will work, as the M129 head is from a 250SE/M129 anyway.
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1964 230SL
2015 G550
Benz Dr.
Associate Member
Platinum
Canada, ON, Port Lambton
Posts: 7219
Benz Dr.
Re: Dimension of M129 Valve and Valve Stem
«
Reply #3 on:
March 12, 2023, 04:30:21 »
Make sure they don't touch the throat below the valve seat too much. I find port matching to be of benefit.
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1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA ''The Red Rocket ''
Dan Caron's SL Barn
1970 3.5 Coupe
1961 190SL
1985 300CD Turbo Coupe
1981 300SD
2013 GMC Sierra
1965 230SL
1967 250SL
1970 280SL
1988 560SEC
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Pagoda SL Group
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W113 Pagoda SL Group
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Drive train, fuel, suspension, steering & brakes
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Dimension of M129 Valve and Valve Stem