RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.
-
Upload
grace-manning -
Category
Documents
-
view
219 -
download
2
Transcript of RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.
![Page 1: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/1.jpg)
RECONDITIONING CYLINDER RECONDITIONING CYLINDER HEADSHEADS
Chapter 9Chapter 9Page 209 Classroom
Manual
Page 207 Lab Manual
RRKK
![Page 2: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/2.jpg)
Page Page
CHAPTER OBJECTIVECHAPTER OBJECTIVE
Correct valve guide clearance by:• Knurling.• Reaming to accept oversize valve stems.• Installing bronze guide liners.• Installing cast iron guide inserts.
Replace intregal and insert valve seats. Grind valve seats & correct contact
pattern.
RRKK
![Page 3: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/3.jpg)
Page Page
CHAPTER OBJECTIVECHAPTER OBJECTIVE
Recondition valve faces & tips. Identify proper valve face-to-seat contact
pattern. Correct valve stem seal alignment. Replace worn or damaged pressed-in
rocker arm studs with oversize and threaded studs.
Resurface cylinder head sealing surface.
RRKK
![Page 4: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/4.jpg)
CHAPTER OBJECTIVECHAPTER OBJECTIVE
Measure & correct valve guide height. Measure & correct valve spring installed
height. Measure & correct valve stem height.
![Page 5: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/5.jpg)
Page Page
INTRODUCTIONINTRODUCTION
Valve guide repair. Reconditioning valve guides. Grinding valves. Reconditioning valve seats. Resurfacing cylinder head.
RRKK
![Page 6: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/6.jpg)
Page Page
RESURFACING THE HEADRESURFACING THE HEAD
Types of resurfacing equipment• Belt sander• Surface grinder• Rotory broach
The amount of material removed, each pass, depends on the type of equipment used.
Resurfacing increases compression ratio.
RRKK
![Page 7: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/7.jpg)
RESURFACING CONCERNSRESURFACING CONCERNS
Spark Knock . Piston-to-valve interference. Change in rocker arm geometry. Change in clearance volume. Misalignment of the intake manifold. Inaccurate cam timing on OHC engines. Surface finish.
![Page 8: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/8.jpg)
MANIFOLD ANGLESMANIFOLD ANGLES
![Page 9: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/9.jpg)
SURFACE FINISHSURFACE FINISH
The rougher the surface thehigher the microinch finish.
![Page 10: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/10.jpg)
COMPRESSION RATIOCOMPRESSION RATIO
Combustion chamber volumeCombustion chamber volume Head gasket volumeHead gasket volume Deck HeightDeck Height Cylinder volumeCylinder volume
![Page 11: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/11.jpg)
TermsTerms
Radius = diameter /2Radius = diameter /2 Squared = number multiplied by itselfSquared = number multiplied by itself Pi = 3.1416Pi = 3.1416 Stroke = Piston movement TDC to BDCStroke = Piston movement TDC to BDC
![Page 12: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/12.jpg)
COMBUSTION CHAMBERCOMBUSTION CHAMBER
Measure combustion chamber in cc’sMeasure combustion chamber in cc’s
![Page 13: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/13.jpg)
HEAD GASKETHEAD GASKET
Figure head gasket volumeFigure head gasket volume Use formula Pi x radiusUse formula Pi x radius2 2 x heightx height Convert to cc’s, ci x 16.3866 = ccConvert to cc’s, ci x 16.3866 = cc
![Page 14: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/14.jpg)
DECK HEIGHTDECK HEIGHT
Bring piston to TDCBring piston to TDC Measure from deck to pistonMeasure from deck to piston Figure area Pi x rFigure area Pi x r22 x height x height
![Page 15: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/15.jpg)
CYLINDER VOLUMECYLINDER VOLUME
Bore divided by 2Bore divided by 2 Pi rPi r22 x stroke x stroke
![Page 16: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/16.jpg)
CLEARANCE VOLUME AT CLEARANCE VOLUME AT TDCTDC
Combustion chamber volume in cc’s Combustion chamber volume in cc’s Head gasket volume in cc’s Head gasket volume in cc’s Deck height volume in cc’s Deck height volume in cc’s
____________ TotalTotal
![Page 17: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/17.jpg)
CLEARANCE VOLUME AT CLEARANCE VOLUME AT BDCBDC
Combustion chamber volume in cc’s Combustion chamber volume in cc’s Head gasket volume in cc’s Head gasket volume in cc’s Deck height volume in cc’s Deck height volume in cc’s Cylinder volume in cc’s Cylinder volume in cc’s
____________ TotalTotal
![Page 18: RECONDITIONING CYLINDER HEADS Chapter 9 Page 209 Classroom Manual Page 207 Lab Manual RKRKRKRK.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649f505503460f94c737bd/html5/thumbnails/18.jpg)
COMPRESSION RATIOCOMPRESSION RATIO
Clearance volume at TDCClearance volume at TDC
________________________ = CR________________________ = CR Clearance volume at BDCClearance volume at BDC