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#1
12-27-2019, 06:14 PM
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Cam Thrust Plate Shim/Spacer
Need some help locating a few (2) timing gear spacers, the "shim" that sits between the gear and the face of the cam??
Even if anyone has the size, O.D., I.D., and thickness, I could probably make a few! I have about a dozen OEM plates on the shelf and was surprised to see them sold without the spacers included? Thanks, Gary in N.Y. P.S. Wishing all here a very "Happy New Year"! |
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#2
12-27-2019, 06:52 PM
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never heard of a spacer. do you have a pic??
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1979 Firebird Trans Am 301/4spd (Now 428) 1977 Firebird Formula 400/Auto 2007 Grand Prix GXP 5.3L |
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#3
12-27-2019, 07:09 PM
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X2.Tom
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#4
12-27-2019, 08:34 PM
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I think he may be talking about the plate that bolts to the block and holds the cam in?
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#5
12-27-2019, 09:02 PM
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I thought that too- but OP mentioned he has OE “plates”...what plates is he referring to?
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears ‘66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears (Traded) '69 LeMans Vert, 350, #47 heads: Non-running project |
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#6
12-27-2019, 10:27 PM
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Hmmm....
Does say 2 pieces. This replacement for eccentric setup? Cam retainer plate? (LPI plate I think) Eccentric?
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#7
12-28-2019, 12:40 AM
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Hey gosfast, are you running an electric fuel pump? Nitemare sells a washer that says it is needed if you go that way. Not sure why.
http://www.nitemareperformance.com/camwasher.html He also sells different thickness cam plates, only 10 thou difference but it's there. http://www.nitemareperformance.com/camplate_hp.html
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Let's make welfare as hard to get as Veterans benefits! |
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#8
12-28-2019, 08:01 AM
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There are no shims unless you make then and even then you should not needed them when things are right as the matching of the rear of the Cam gear and nose of the Cam sets the back lash.
Also if you do use shims and you offset the Cam gear too much out of being parallel with the face of the Crank gear your going to eat up timing chains dam fast! About the only thing I have ever done is to sand down the Cam retention plate about .003" one time.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#9
12-28-2019, 08:55 AM
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Let me try again, maybe instead of saying timing gear I should have said cam gear, it sits between the cam gear and the face of the cam. It is a shim/spacer that sets the cam end pla.
With the plate averaging .126"/.127" thick the spacer should be about .130" thick, this sets the cam end play at about .003" nominal. Without this spacer if you tighten the cam gear bolt it will "clamp" the cam gear to the front of the cam and lock it solid, cam won't be able to turn. It looks very similar to valve seat insert but smaller! Thanks, Gary in N.Y. P.S. Wishing all here a very "Happy New Year"! |
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#10
12-28-2019, 09:09 AM
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Uh No. There is no setting,
All parts involved are hard dimension and when installed correctly will provided a workable amount of clearance given everything is in blue print tolerances In fact if you added anything it would put things in a bind or would be so thin it wouldn't last very long .
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A man who falls for everything stands for nothing. Last edited by Formulas; 12-28-2019 at 09:19 AM. |
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#11
12-28-2019, 09:10 AM
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This "sounds like" a cam gear that's been machined flat on back for a torrington bearing.
Never seen stock or stock replacemant need a shim. Clay |
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#12
12-28-2019, 10:23 AM
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Quote:
The cam gear is "flat" on the back side! Really appreciate all the quick replies. Thanks, Gary in N.Y. P.S. Wishing all here a very "Happy New Year"! |
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#13
12-28-2019, 02:29 PM
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Are you using the Sim's torrington bearing and cam gear setup?
(he's on PY machining/selling them)
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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