16v Tipo head prep

GC porting, development, valve and seat work, combustion chambers, cams, head construction, etc
Post Reply
Guy Croft
Site Admin
Posts: 5004
Joined: Sun Jun 18, 2006 9:31 am
Location: Lincoln, UK
Contact:

16v Tipo head prep

Post by Guy Croft » Tue Oct 22, 2013 4:12 pm

atmo injected 16v 2 liter Tipo unit in prep for Church Motor Co in Kent..

GC
Attachments
OD_block prep (1).JPG
block deburr all over inside and out post rebore and reface..
OD_block prep (1).JPG (109.83 KiB) Viewed 1841 times
OD_block prep (3).JPG
end of crankcase looking a bit happier after deburr and linish at 120 grade
OD_block prep (3).JPG (105.92 KiB) Viewed 1841 times
OD_block prep (5).JPG
in the Jizer tank for rodding-out of every oilway, stoning and polishing of housings. head bolt hole thread cleaning...
OD_block prep (5).JPG (151.29 KiB) Viewed 1841 times
OD_block prep (7).JPG
mixed abrasive/Scotchbrite wheel makes a nice job of polishing webs and crankcase interior after deburr ops..
OD_block prep (7).JPG (136.14 KiB) Viewed 1841 times
OD_block prep (8) - rady to paint FINALLY.JPG
hot detergent washed after micro-honing at 180 grade for OE rings (chrome faced), solvent cleaned and ready wire-brushed ready for - repaint.
OD_block prep (8) - rady to paint FINALLY.JPG (137.73 KiB) Viewed 1841 times
OD_ex race guides in & selective honing.JPG
new GC race guides for the ex side only, the inlets (cast-iron) re good enough for reuse...
OD_ex race guides in & selective honing.JPG (108.79 KiB) Viewed 1841 times
OD_ex race guides in & selective honing (2).JPG
race guides going in..
OD_ex race guides in & selective honing (2).JPG (117.12 KiB) Viewed 1841 times
OD_ex race guides in & selective honing (4).JPG
cheecking the valves in the new guides after overhaul (stem polish, regrind..).. this is where you find out how good your valve guide design is. I want the valves either a bit tight or able to just fall under their own weight. I do NOT want them loose.
OD_ex race guides in & selective honing (4).JPG (177.07 KiB) Viewed 1841 times
OD_ex race guides in & selective honing (8).JPG
bulk removal in tight guide with 180 grade Flexhone (7mm) - once the valve pentrates easily the guides get a final oil-retentive brush with 220 grade. Iterim cleaning when checking fits is vital or you're embed carborundun particles in the soft guide and never get rid of it..
OD_ex race guides in & selective honing (8).JPG (141.39 KiB) Viewed 1841 times
OD_valves renumbering.JPG
numbering valves (before it's too late..)
OD_valves renumbering.JPG (126.5 KiB) Viewed 1841 times
Guy Croft, owner

Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests