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Originally Posted by SB
(Post 4417103)
Steam holes not an issue in a boat. Not much of an issue in a car where temps are watched. Only bad in something stuck in traffic on hot day with marginal cooling systems (typical back then) and running hot.
I'd be more afraid of freeze damage or etc with that motor. Looks very neglected ! Lots of corrosion on motor mounts and the obvious hole in the timing chain cover. If the block is okay, make sure the engine shop does a magnuflux and sonic check, all threaded holes (especially head bolt holes) and etc. I must pull out engine block how much damage can make salt water,sea,in block cast ? and if everything is ok,is this good combination,this heads and 400 block? I was thinking about port and polish heads,and change block on hyd roller cam and lifters? is it possible whit this block to make hyd.roller? or better, can I come close 400 hp with this combo,this old,poor flowing heads and 400 ci? |
I just Googled the CSS 19, what a cool looking little boat. Please post some photos of yours.
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What can I expect from these head?
I need 400 healthy horses http://s17.postimg.org/5otmk8bvv/franko_mobitel_069.jpg http://s17.postimg.org/kw50quecr/franko_mobitel_071.jpg is this camshaft good for this combo? http://www.compperformancegroupstore...ory_Code=HFTXM |
https://www.youtube.com/watch?v=sgPZ...gJwT1AozDXVWXR
I can do almost everything , what this guy made, I already have a bigger valves , a little valve shrouding, there are plenty of meat,porting and other things well, if I can stay with little budget,why not |
still working,I started to disassemble the head and I started porting .I m not sure if I'm going to low budget build or to spend some more money
still read a lot,and learning at the top of the piston write 0.20,all cylinder is good ,no scratch,bottom end turns without problem,and that is my problem,why touch if i do not need otherwise the plan is this top end afr 190 cc heads compcams marine xm 276 if I go roller,if I stay no roller xm 278 (not sure if i need new lifters,my is like new,no wear) roller rockers 1.5 I have hardened pushrods i have carburetor I m not sure maybe 750cfm,i have 4bar rochester,but i am not sure what to expect from him edelbrock rpm performer intake bottom end I like to go with some flat top piston +7cc 5.7 or 6 rods,maybe forged crank oem or buy some bottom end kit alpha one is down ,tomorrow start disassemble,must check everything I measured the stroke of the intake valve, left an imprint on it,and it is 12 mm,0.472 inch of lift,exh 11.5mm .452",so probably both is .452",summit says crane cam .452-452 steam holes on block is closed with something,not rust |
I need an answer
cam specification says 0.500 max lift Is this means that the valve to be raised from the valve seat for 0.500? |
still working
the engine is disassembled into parts crankshaft is oem gm, ok condition, need light polishing, main bearings are .020 "down, and rod bearings is .009" down.clevite p 77 bearings are not in the best condition, especially main, lower, all need replacement I'm still in the process of measuring all * Former engine builder strengthen the block with ARP bolts and nuts stock rods are also strengthened with ARP bolts and nuts some cheap aluminum piston .020 "reverse dome + 30cc, I measured cam is C.C 280 AH10, need light polishing, so I do not need a new One cylinder has a crater in the field of DDC, and here I am in doubt what to do. all 8 cylinder bore over .030, and buy new flat top piston and 6 "rods, or put a sleeve into the damaged cylinder, keep this piston and rod My machinist said sleeve is thick .070 ", and I was very afraid of what will happen when charging the same all cylinders are in very good condition with no significant wear yet all measure up go some pictures of damaged cylinder |
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I would try to replicate the merc 377 build, that boat wont be happy with a cammy engine. Especially if you put 5 people in it . And if you still have the fiberglass "arch" that happens to have a tow hook built in up there .
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