SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: enginedoctor on March 29, 2008, 11:05:45 AM
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1. inspect for cracks/flaws on the block decks around the cylinder head bolt hole areas and between the cylinders.
2. inspect for cracks/flaws in the main web areas and all around the main saddles.
3. check decks for straightness with a straight edge. surface if needed. check block deck heights and equalize.
4. inspect cam thrust area for wear/damage,repair as needed. inspect lifter bores for wear.
5. bolt/tork main caps to specs. and check I/D with a dial bore guage. note that main caps should fit into registers snuggly and should not rock back and forth on the block during cap installation.
6. bore and hone cylinders following piston manufacturer's instruction, adjustments will be based on intended use,..marine,nitrous,blown, etc. leave +/- .003 for honing cylinders and select fit pistons to each bore and make sure that the cylinders are finish honed for the intended type of rings that will be used.. check piston to wall clearances.
7. inspect and chase all bolt holes in the block using only dull taps and tapping fluid.
8. prep. block for assy by cleaning after machining operations with hot soapy water, jet wash etc. dry off block and lube well to prevent rust. wipe off cylinder bores with trans. fluid and remove all contaminants from cylinders, as well as all other machined areas...."coffee filters " work nice for wiping.
9. install cam bearings and check cam fit as well as checking camshaft oil clearances. install freeze plugs, oil plugs etc...paint block as desired lube and cover it....you should now be good to go.
next time...."CONNECTING ROD WORK". see-ya! :) :)
p.s. investing in a dial bore guage is a good idea if you intend on doing your own assy .
also, i am a much better machinest than i am a keyboard operator!
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1. inspect for cracks/flaws on the block decks around the cylinder head bolt hole areas and between the cylinders.
2. inspect for cracks/flaws in the main web areas and all around the main saddles.
3. check decks for straightness with a straight edge. surface if needed. check block deck heights and equalize.
4. inspect cam thrust area for wear/damage,repair as needed. inspect lifter bores for wear.
5. bolt/tork main caps to specs. and check I/D with a dial bore guage. note that main caps should fit into registers snuggly and should not rock back and forth on the block during cap installation.
6. bore and hone cylinders following piston manufacturer's instruction, adjustments will be based on intended use,..marine,nitrous,blown, etc. leave +/- .003 for honing cylinders and select fit pistons to each bore and make sure that the cylinders are finish honed for the intended type of rings that will be used.. check piston to wall clearances.
7. inspect and chase all bolt holes in the block using only dull taps and tapping fluid.
8. prep. block for assy by cleaning after machining operations with hot soapy water, jet wash etc. dry off block and lube well to prevent rust. wipe off cylinder bores with trans. fluid and remove all contaminants from cylinders, as well as all other machined areas...."coffee filters " work nice for wiping.
9. install cam bearings and check cam fit as well as checking camshaft oil clearances. install freeze plugs, oil plugs etc...paint block as desired lube and cover it....you should now be good to go.
next time...."CONNECTING ROD WORK". see-ya! :) :)
p.s. investing in a dial bore guage is a good idea if you intend on doing your own assy .
also, i am a much better machinest than i am a keyboard operator!
-
1. inspect for cracks/flaws on the block decks around the cylinder head bolt hole areas and between the cylinders.
2. inspect for cracks/flaws in the main web areas and all around the main saddles.
3. check decks for straightness with a straight edge. surface if needed. check block deck heights and equalize.
4. inspect cam thrust area for wear/damage,repair as needed. inspect lifter bores for wear.
5. bolt/tork main caps to specs. and check I/D with a dial bore guage. note that main caps should fit into registers snuggly and should not rock back and forth on the block during cap installation.
6. bore and hone cylinders following piston manufacturer's instruction, adjustments will be based on intended use,..marine,nitrous,blown, etc. leave +/- .003 for honing cylinders and select fit pistons to each bore and make sure that the cylinders are finish honed for the intended type of rings that will be used.. check piston to wall clearances.
7. inspect and chase all bolt holes in the block using only dull taps and tapping fluid.
8. prep. block for assy by cleaning after machining operations with hot soapy water, jet wash etc. dry off block and lube well to prevent rust. wipe off cylinder bores with trans. fluid and remove all contaminants from cylinders, as well as all other machined areas...."coffee filters " work nice for wiping.
9. install cam bearings and check cam fit as well as checking camshaft oil clearances. install freeze plugs, oil plugs etc...paint block as desired lube and cover it....you should now be good to go.
next time...."CONNECTING ROD WORK". see-ya! :) :)
p.s. investing in a dial bore guage is a good idea if you intend on doing your own assy .
also, i am a much better machinest than i am a keyboard operator!
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Bringing one back from the gallows? I would also recomend checking the actual bore locations of the mains and cam line bores, sometimes the blocks shift in the boring machines and they will go very offset...I have a couple of extreme examples of the cam bore being almos 1/2" off center.
My uncle calls these "Friday" motors LOL.. ;D
GT
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Bringing one back from the gallows? I would also recomend checking the actual bore locations of the mains and cam line bores, sometimes the blocks shift in the boring machines and they will go very offset...I have a couple of extreme examples of the cam bore being almos 1/2" off center.
My uncle calls these "Friday" motors LOL.. ;D
GT
Gt......AKA " tolerance stacking " ::)
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78 Centurian....I thought this might help you ;D
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1. inspect for cracks/flaws on the block decks around the cylinder head bolt hole areas and between the cylinders.
2. inspect for cracks/flaws in the main web areas and all around the main saddles.
3. check decks for straightness with a straight edge. surface if needed. check block deck heights and equalize.
4. inspect cam thrust area for wear/damage,repair as needed. inspect lifter bores for wear.
5. bolt/tork main caps to specs. and check I/D with a dial bore guage. note that main caps should fit into registers snuggly and should not rock back and forth on the block during cap installation.
6. bore and hone cylinders following piston manufacturer's instruction, adjustments will be based on intended use,..marine,nitrous,blown, etc. leave +/- .003 for honing cylinders and select fit pistons to each bore and make sure that the cylinders are finish honed for the intended type of rings that will be used.. check piston to wall clearances.
7. inspect and chase all bolt holes in the block using only dull taps and tapping fluid.
8. prep. block for assy by cleaning after machining operations with hot soapy water, jet wash etc. dry off block and lube well to prevent rust. wipe off cylinder bores with trans. fluid and remove all contaminants from cylinders, as well as all other machined areas...."coffee filters " work nice for wiping.
9. install cam bearings and check cam fit as well as checking camshaft oil clearances. install freeze plugs, oil plugs etc...paint block as desired lube and cover it....you should now be good to go.
next time...."CONNECTING ROD WORK". see-ya! :) :)
p.s. investing in a dial bore guage is a good idea if you intend on doing your own assy .
also, i am a much better machinest than i am a keyboard operator!
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Nordie, refer back to my ancient posts...they may help :thumbup: