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 9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
9th Nov, 2009 at 01:58:34pm
mg cam turbo double valve springs and high lift pressed steel rockers good combination or will i get problems?
Yes i moved to the darkside |
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 1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
9th Nov, 2009 at 02:02:03pm
Sounds OK to me. Aren't the sintered regarded as the most brittle rockers? I think the pressed ones are thought of as good On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse  On 30th Apr, 2010 Rod S said:
Gary's description is best |
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 10022 Posts Member #: 1456 Mongo Barnsley, South Flatcapshire |
9th Nov, 2009 at 02:06:03pm
7k in the clubby? If something is worth doing, it's worth doing half of. |
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9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
9th Nov, 2009 at 02:12:28pm
On 9th Nov, 2009 GaryOS said:
Sounds OK to me. Aren't the sintered regarded as the most brittle rockers? I think the pressed ones are thought of as good the pressed steel are a higher lift iirc 1:2.7 the sintered are thought of as crap and at about 1:2.3 i have seen alot of the pressed steel rockers welded, i can only Imagen for high rpm usage they part? On 9th Nov, 2009 minimadmotorman said:
7k in the clubby? er.. maybe well we will see i think valve bouce at 5800 is silly though whilst its off im changing stuff out Edited by Brett on 9th Nov, 2009. Yes i moved to the darkside |
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10022 Posts Member #: 1456 Mongo Barnsley, South Flatcapshire |
9th Nov, 2009 at 02:19:34pm
Large bore pressed steel rockers are 1.27:1 where as the later sintered type typically manage 1.22:1 at best.
If something is worth doing, it's worth doing half of. |
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1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
9th Nov, 2009 at 02:23:17pm
On 9th Nov, 2009 Brett said:
the pressed steel are a higher lift iirc 1:2.7 the sintered are thought of as crap and at about 1:2.3 i have seen alot of the pressed steel rockers welded, i can only Imagen for high rpm usage they part? Yeah, theres the supposed 1.3:1 pressed steel oval pads, then the 1.25:1 for the pressed circular pads, sintered and forged. They all seem to vary a bit though Wouldn't the rockers all be massively work hardened after a life of abuse? Would welding the centres cause cracking since they may have gone brittle? On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse On 30th Apr, 2010 Rod S said:
Gary's description is best |
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10022 Posts Member #: 1456 Mongo Barnsley, South Flatcapshire |
9th Nov, 2009 at 02:24:15pm
Personally I wouldn't be welding them for a max rpm of 7k. Not like you will be seeing it all the time on a road engine. If something is worth doing, it's worth doing half of. |
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9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
9th Nov, 2009 at 02:41:32pm
On 9th Nov, 2009 minimadmotorman said:
Personally I wouldn't be welding them for a max rpm of 7k. Not like you will be seeing it all the time on a road engine. cheers guys notice a slight typo lol i did mean 1:1.27 not 2.7
Yes i moved to the darkside |
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