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#1
04-24-2008, 11:40 PM
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Rockers won't clear the valve covers?
Hey all. I have a set of #62 heads, I put 1.5 Scorpion roller rockers on them, and My new valve covers won't clear them at the areas where the bolt holes are.
Is this common? Can I grind the valve covers or do I grind down the rocker arms? Or is there a chance of useing a spacer to make them fit? I know that can help with clearence on height, and on the end rockers, but these are in the middle where the bolt holes are. And the car has power breaks so hieght is an issue. Thanks for your suggestions!
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In over my head..and getting deeper.. |
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#2
04-25-2008, 01:10 AM
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Grind 'em..............
Very common w/ cast v-covers; grind a radius on the 4 rocker arms per head that are near the bolt pockets. Be very sure that the powdered metal from the grinding does NOT get into the needle bearings on the rockers.
Les
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Les Iden ---------------------------- '65 Buick Sport Wagon Custom, 340, T350, 3:23 '66 GTO Post/468, 700R4, 3.31 (Mike's as of 9-16) '68 Grand Prix/455, dual AFBs, T400, 2:93 posi (sold) '72 TA tribute/461, T400, 3.08, (Russ's as of 9-16) '97 Mitsubishi Eclipse Spyder Turbo, Konis, 5 speed '09 Torrent GXP, nav, Sun & Sound pkg., Bilsteins |
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#3
04-25-2008, 01:57 AM
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I had the same problem with a set of the gold crane's. I ended up having to use a set of tall stamped steel covers.
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#4
04-25-2008, 02:10 AM
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Thanks wheelspin, I wasn't sure if grinding down the rocker arms was ok or not. Maybe if I put a piece of tape of the needle bearings, and the oil holes and such I can avoid a problem.
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In over my head..and getting deeper.. |
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#5
04-25-2008, 05:53 AM
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have you tried a thicker cork gasket..????
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1970 firebird, 468, e heads, |
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#6
04-25-2008, 09:29 AM
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I used two gaskets per side with no problems...
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#7
04-25-2008, 09:40 AM
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NUNZI i believe sells spacers.... or use ram air iv VC gaskets they are thicker
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1969 Early 01D JUDGE #s MATCH RA III 4 Spd (Concours Restored) 1969 PRO STREET GTO 2500 lbs. ALL ALUMINUM 505 1969 RARE All Glass GTO (FOR SALE) YOU NEED THIS AC Cobra Kit Car 521 670 HP/715 Trq LOOKING FOR V PARTS !!!!!!!!!!!! |
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#8
04-25-2008, 09:53 AM
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There are several places that sell spacers for our heads in various thickness. I prefer this method over grinding if you can't use tall covers.
Just my .02
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67 Firebird Convert 455 +.060 TH400 74cc KRE d-ports piston dished 16cc H-beam rods Comp Cam 305-AH-8 cam 108* LSA 253/260 @.050 duration .577/.594 lift w/1.65 rockers Ford 9" 3.50 Detroit Locker M/T Sportsman Radials 31x18x15 on Convo Pro 15x15s |
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#9
04-25-2008, 10:10 AM
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Why grind the rockers??
Grinding the corners on selected rockers is required due to the thickness of the cast covers around the bolt pockets, NOT the heigth of the v-covers.
Les
__________________
Les Iden ---------------------------- '65 Buick Sport Wagon Custom, 340, T350, 3:23 '66 GTO Post/468, 700R4, 3.31 (Mike's as of 9-16) '68 Grand Prix/455, dual AFBs, T400, 2:93 posi (sold) '72 TA tribute/461, T400, 3.08, (Russ's as of 9-16) '97 Mitsubishi Eclipse Spyder Turbo, Konis, 5 speed '09 Torrent GXP, nav, Sun & Sound pkg., Bilsteins |
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#10
04-25-2008, 10:55 AM
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yes, heighth isn't the issue, it is the inside curve where the cast aluminum valve covers have the bolt holes.
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In over my head..and getting deeper.. |
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#11
04-25-2008, 07:09 PM
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Had exactly the same problem w/my Harland Sharps . On my covers I had to put a small radius on the rockers for cylinders #1,7,2 and 8 intake only. Those areas were so close that I couldn't quite get proper bolt "line up". After I completed the work I "dry fitted ""everything together and cranked the engine to be sure it wasn't hitting anywhere during the rockers' cycle. I also used Butlers" 5/16" valve cover gaskets . They are the thickest I could fine . I've had issues w/sealing and these cork gaskets w/RTV was a quick fix. Larry
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