FC valve lash setting needed
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09-17-2006, 01:29
Post: #1
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FC valve lash setting needed
I believe that i need to set them at 015 intake and 025 exhaust
but need some more imput from the members. Thanks Woody FC RC 1981 getting some PM done. |
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09-17-2006, 03:04
Post: #2
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FC valve lash setting needed
That's a good number. Not a bad plan to check the spring pressures too. Moroso
makes a cheap "fish scale" type of tool to check spring loads on the engine. Consistency is what one want's to see. Most broken valves are due to weak spring load resulting in valve flutter or lack of control, makes thing hard on the cam lobe and lifters too. Springs can be changed on the engine, just don't forget to place the piston in the cylinder being serviced at top dead. MH ----- Original Message ----- From: rwoodysurplus To: WanderlodgeForum@yahoogroups.com Sent: Sunday, September 17, 2006 8:29 AM Subject: [WanderlodgeForum] FC valve lash setting needed I believe that i need to set them at 015 intake and 025 exhaust but need some more imput from the members. Thanks Woody FC RC 1981 getting some PM done. [Non-text portions of this message have been removed] |
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09-17-2006, 04:14
Post: #3
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FC valve lash setting needed
Mike H.,
I assume you say go to TDC when you are changing a spring to keep the valve from dropping down into the cylinder? How far down, approximately, will the valve go with piston up? I had a "keeper" come off a valve, a fellow used a small tool to compress one spring to replace The valve retainer cap and keeper. The hardest part of the job was to keep the valve up high enough to put these two in place with the spring compressed. Bob Janes, Greenville, SC --- In WanderlodgeForum@yahoogroups.com, "Mike Hohnstein" <MHOHNSTEIN@...> wrote: > > That's a good number. Not a bad plan to check the spring pressures too. Moroso makes a cheap "fish scale" type of tool to check spring loads on the engine. Consistency is what one want's to see. Most broken valves are due to weak spring load resulting in valve flutter or lack of control, makes thing hard on the cam lobe and lifters too. Springs can be changed on the engine, just don't forget to place the piston in the cylinder being serviced at top dead. > MH > ----- Original Message ----- > From: rwoodysurplus > To: WanderlodgeForum@yahoogroups.com > Sent: Sunday, September 17, 2006 8:29 AM > Subject: [WanderlodgeForum] FC valve lash setting needed > > > I believe that i need to set them at 015 intake and 025 exhaust > but need some more imput from the members. > > Thanks > > Woody > FC RC 1981 getting some PM done. > > > > > > [Non-text portions of this message have been removed] > |
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09-17-2006, 04:29
Post: #4
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FC valve lash setting needed
There are two ways to go about changing a spring on the engine. Introducing
compressed air to the cylinder works well but requires removing the injector nozzle and utilization of a air to cylinder coupler. It's simpler to bring the piston to TDC, the idea is not to lose the valve in the hole. It's normal to whack the retainer with a hammer to loosen the valve lock and retainer so it will slide down the valve stem when the spring is compressed. The alternative is to keep the rpms down so weak springs aren't as likely to cause problems. I choose to keep the engine speed down. MH ----- Original Message ----- From: one_dusty_hoot To: WanderlodgeForum@yahoogroups.com Sent: Sunday, September 17, 2006 11:14 AM Subject: [WanderlodgeForum] Re: FC valve lash setting needed Mike H., I assume you say go to TDC when you are changing a spring to keep the valve from dropping down into the cylinder? How far down, approximately, will the valve go with piston up? I had a "keeper" come off a valve, a fellow used a small tool to compress one spring to replace The valve retainer cap and keeper. The hardest part of the job was to keep the valve up high enough to put these two in place with the spring compressed. Bob Janes, Greenville, SC --- In WanderlodgeForum@yahoogroups.com, "Mike Hohnstein" <MHOHNSTEIN@...> wrote: > > That's a good number. Not a bad plan to check the spring pressures too. Moroso makes a cheap "fish scale" type of tool to check spring loads on the engine. Consistency is what one want's to see. Most broken valves are due to weak spring load resulting in valve flutter or lack of control, makes thing hard on the cam lobe and lifters too. Springs can be changed on the engine, just don't forget to place the piston in the cylinder being serviced at top dead. > MH > ----- Original Message ----- > From: rwoodysurplus > To: WanderlodgeForum@yahoogroups.com > Sent: Sunday, September 17, 2006 8:29 AM > Subject: [WanderlodgeForum] FC valve lash setting needed > > > I believe that i need to set them at 015 intake and 025 exhaust > but need some more imput from the members. > > Thanks > > Woody > FC RC 1981 getting some PM done. > > > > > > [Non-text portions of this message have been removed] > [Non-text portions of this message have been removed] |
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09-17-2006, 11:55
Post: #5
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FC valve lash setting needed
The cat book says for intake .012 to .018 inches is acceptable. If they are
out of this range set them at .015. For exhaust, .022 to .028 inches is acceptable. If they are out of this range set them at .025. Did mine in May, intakes were about .021 and exhausts were about .031. Just passed emissions test couple weeks ago, and result was it runs a little cleaner. dandarst86fc35rbhuntleyil. >From: "rwoodysurplus" >Reply-To: WanderlodgeForum@yahoogroups.com >To: WanderlodgeForum@yahoogroups.com >Subject: [WanderlodgeForum] FC valve lash setting needed >Date: Sun, 17 Sep 2006 13:29:24 -0000 > >I believe that i need to set them at 015 intake and 025 exhaust >but need some more imput from the members. > >Thanks > >Woody >FC RC 1981 getting some PM done. > > > > |
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