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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Fot\]\s+RE\s+\-valve\s+guides\s+revisited\s*$/: 12 ]

Total 12 documents matching your query.

1. [Fot] RE -valve guides revisited (score: 1)
Author: "Enquiries Road & Track" <enquiries@roadandtrack.net.au>
Date: Tue, 15 May 2012 08:13:47 +1000
i think you guys are missing the point. bronze guides were intended to be able to run *smaller* clearances for better heat transfer. there is absolutely no point in increasing clearances unless you h
/html/fot/2012-05/msg00266.html (10,847 bytes)

2. Re: [Fot] RE -valve guides revisited (score: 1)
Author: "Randall" <tr3driver@ca.rr.com>
Date: Mon, 14 May 2012 17:14:49 -0700
Or don't want the exhaust valves to stick open when the guides get good and hot, and expand inward (because they can't expand outward against the cast iron head). BTDT -- Randall ___________________
/html/fot/2012-05/msg00268.html (11,745 bytes)

3. Re: [Fot] RE -valve guides revisited (score: 1)
Author: Michael Porter <mdporter@dfn.com>
Date: Mon, 14 May 2012 18:26:32 -0600
Umm, the issue is not the cold clearance, but the hot running clearance. Since the thermal coefficient of expansion of bronze is, depending upon type, about 2-1/2 to 3 times that of cast iron, their
/html/fot/2012-05/msg00269.html (12,750 bytes)

4. Re: [Fot] RE -valve guides revisited (score: 1)
Author: Chuck Gee <chasgee@aol.com>
Date: Mon, 14 May 2012 22:44:15 -0400 (EDT)
Actually, I don't think I'm missing anything. You should only be concerned with the clearances AT TEMPERATURE. Cast iron has a Coefficient of Thermal Expansion of around 6 micro inches/inch per degre
/html/fot/2012-05/msg00270.html (14,007 bytes)

5. Re: [Fot] RE -valve guides revisited (score: 1)
Author: Tony Drews <tony@tonydrews.com>
Date: Mon, 14 May 2012 22:09:25 -0500
One of the FOT shared some calculations with me concerning the shrinking of clearances when hot... With Bronze guides with 0.004" clearance and Stainless Steel valves with 5/16" stems, when the exhau
/html/fot/2012-05/msg00271.html (13,774 bytes)

6. Re: [Fot] RE -valve guides revisited (score: 1)
Author: "Tim Murphy" <timmurph@fastbytes.com>
Date: Tue, 15 May 2012 22:03:56 -0500
I had sent Tony the spread sheet some time ago analyzing the clearance between the guide and the valve at various temperatures. This is based on the coefficient of expansion of cast iron (cylinder he
/html/fot/2012-05/msg00280.html (17,426 bytes)

7. [Fot] RE -valve guides revisited (score: 1)
Author: "Enquiries Road & Track" <enquiries@roadandtrack.net.au>
Date: Tue, 15 May 2012 08:13:47 +1000
i think you guys are missing the point. bronze guides were intended to be able to run *smaller* clearances for better heat transfer. there is absolutely no point in increasing clearances unless you h
/html/fot/2012-05/msg00721.html (11,173 bytes)

8. Re: [Fot] RE -valve guides revisited (score: 1)
Author: "Randall" <tr3driver@ca.rr.com>
Date: Mon, 14 May 2012 17:14:49 -0700
Or don't want the exhaust valves to stick open when the guides get good and hot, and expand inward (because they can't expand outward against the cast iron head). BTDT -- Randall ___________________
/html/fot/2012-05/msg00723.html (11,889 bytes)

9. Re: [Fot] RE -valve guides revisited (score: 1)
Author: Michael Porter <mdporter@dfn.com>
Date: Mon, 14 May 2012 18:26:32 -0600
On 5/14/2012 4:13 PM, Enquiries Road & Track wrote: i think you guys are missing the point. bronze guides were intended to be able to run *smaller* clearances for better heat transfer. there is absol
/html/fot/2012-05/msg00724.html (13,293 bytes)

10. Re: [Fot] RE -valve guides revisited (score: 1)
Author: Chuck Gee <chasgee@aol.com>
Date: Mon, 14 May 2012 22:44:15 -0400 (EDT)
Actually, I don't think I'm missing anything. You should only be concerned with the clearances AT TEMPERATURE. Cast iron has a Coefficient of Thermal Expansion of around 6 micro inches/inch per degre
/html/fot/2012-05/msg00725.html (14,286 bytes)

11. Re: [Fot] RE -valve guides revisited (score: 1)
Author: Tony Drews <tony@tonydrews.com>
Date: Mon, 14 May 2012 22:09:25 -0500
One of the FOT shared some calculations with me concerning the shrinking of clearances when hot... With Bronze guides with 0.004" clearance and Stainless Steel valves with 5/16" stems, when the exhau
/html/fot/2012-05/msg00726.html (14,413 bytes)

12. Re: [Fot] RE -valve guides revisited (score: 1)
Author: "Tim Murphy" <timmurph@fastbytes.com>
Date: Tue, 15 May 2012 22:03:56 -0500
I had sent Tony the spread sheet some time ago analyzing the clearance between the guide and the valve at various temperatures. This is based on the coefficient of expansion of cast iron (cylinder he
/html/fot/2012-05/msg00734.html (17,652 bytes)

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