Saloon valve springs (Read 885 times)

[jdfan]

Is anybody out there in the saloon class running valve spring oil spray bars, in alloy rocker covers (fitted with stud girdles)?

[truckingchops]

stud girdles are illegal

T11-2-39 Rockers
(a) Rocker Configuration is to be as per OE
(i) shaft mounted must remain so,
(ii) stud mounted must remain so.
(b) Engines originally manufactured with pressed steel rockers:-
(i) can have the rocker stud slot lengthened.
(ii) no other modifications permitted.
(c) Roller Rockers not permitted.
(d) Titanium Valve Spring Retainers are permitted.

[chris13w]

Jul 13, 2017 18:27:49 GMT 12 truckingchops said:

stud girdles are illegal

T11-2-39 Rockers
(a) Rocker Configuration is to be as per OE
(i) shaft mounted must remain so,
(ii) stud mounted must remain so.
(b) Engines originally manufactured with pressed steel rockers:-
(i) can have the rocker stud slot lengthened.
(ii) no other modifications permitted.
(c) Roller Rockers not permitted.
(d) Titanium Valve Spring Retainers are permitted.

That's not what that says.

[porry41]

looks same to me..lol..apart from roller rockers an associated parts which are so obviose.in brief there are lots of spray bars in use.plus when did oem heads come out with alloy rocker covers apart from some early corvettes that had angle plug heads .nooooo...............hic

[HRC]

Jul 13, 2017 18:27:49 GMT 12 truckingchops said:

stud girdles are illegal

T11-2-39 Rockers
(a) Rocker Configuration is to be as per OE
(i) shaft mounted must remain so,
(ii) stud mounted must remain so.
(b) Engines originally manufactured with pressed steel rockers:-
(i) can have the rocker stud slot lengthened.
(ii) no other modifications permitted.
(c) Roller Rockers not permitted.
(d) Titanium Valve Spring Retainers are permitted.

the ubove rule says Rockers and thats where it ends . stud girdles are not rockers. screw in studs are not rockers. item b (i) can have rocker slot lengthened and b(ii) no other modifications permitted (this is to the rocker nothing else and meens you cant widen the slot to run 7/16 studs or run aftermarket rockers made with 7/16 stud slots) which the top four nz saloons were running at nzs in Auckland ,7/16 studs reinforce the rocker gear as do stud girdles used on 3/8 studs, no small block chev was produced with 7/16 studs STD no small block chev was fitted with posi locks std, the list goes on and we havent even got below the head gaskets yet

[detroit]

DELETE -
T11-2-39 Rockers
(a) Rocker Configuration is to be as per OE
(i) shaft mounted must remain so,
(ii) stud mounted must remain so.
(b) Engines originally manufactured with pressed steel rockers:-
(i) can have the rocker stud slot lengthened.
(ii) no other modifications permitted.
(c) Roller Rockers not permitted.
(d) Titanium Valve Spring Retainers are permitted.
AND REPLACE WITH -
T11-2-39 Rockers
(a) Engines originally manufactured with Pressed Steel Rockers must remain so.
(b) Engines originally manufactured with Pressed Steel Rockers can have the rocker stud slot lengthened.
(c) Overhead cam engines originally manufactured with Roller Rockers must remain so and may only use the
OE Rocker for that engine.
(d) Overhead cam engines originally manufactured with Bucket type Cam Followers must remain so.
(e) Titanium Valve Spring Retainers are permitted.
In Summary, the revised rule set above in conjunction with:
Rule T11-2-34 (d) OE Engine can be modified except where prohibited in this section.
Allows for stud girdles and varying stud sizes to be permitted in the Saloon class for the remainder
of the 2016/17 season.

[95c]

so what are the rules for 2017/18 as starting to build motor soon ,rev kits would be a no no I guess, jasbel timing gear and belt ?

[porry41]

jdfan was origially asking is/or can you run spray bar oiling system....all this other valve bussiness has been covered time an time again in the past .made no difference to the cheaters......burp