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09-08-2012 06:50 PM #1
What do you make of this. There was some super white substance on inside each head. Mostly on top of the rocker studs and inside of valve cover. The oil is fine, the water in the block was fine(remember I pulled apart the front of motor. I could see down in the oil pan and obviously in the water jackets). The stuff was just in the heads, it doesnt look like milky oil, more like some type of assembly lube.
From some other websites I found. It said those heads are intended for marine use only.
Also what you make of the rust?Last edited by repoman3809; 09-08-2012 at 06:53 PM.
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09-08-2012 07:03 PM #2
well that 345 head has been used in boats. i had two sets some that were reworked for off shore but to say it a marine head only? i can buy that head under part number 3063b . that head has a 2.300 valve if the bottom end has a stock piston them the valves could of hit the pistons .white stuff ? hard to say with out seeing it could be lubeaplate ?Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
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09-08-2012 07:21 PM #3
Almost looks and feels like crisco.
but to say it a marine head only?Last edited by repoman3809; 09-08-2012 at 07:23 PM.
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09-08-2012 07:24 PM #4
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09-08-2012 07:36 PM #5
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09-08-2012 07:44 PM #6
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09-08-2012 07:30 PM #7
no not at all there made were you would use a big cc iron head .they are to big for your marine use if you just have a 030 454 there not to big for a 540 in street use or marine use. if you want a iron head the heads may come with inconel ex valves that would put it in to a marine use or a Nos .. blower or turbo use water or land. there nothing done to the iron head it self to make it only marine that i know of .but there are alum heads that are built for marine use and are coated for salt water . i know of custom merlins in 345 built heads for off shore racing and have custom valves sizes.i just threw out a box of inconel valve out for them. i can not talk about them on a open forumLast edited by pat mccarthy; 09-08-2012 at 07:39 PM.
Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
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09-10-2012 05:06 AM #8
The above mentioned was bothering me. I didnt have much time, so I just wanted to do a few more checks on this today. I checked everything....exhaust tips(black), dipstick(clean oil), pan, though bottom of timing chain cover(clean oil), oil filter(clean oil), water jackets(clean water [remember boat...water pulled n thur outdrive, blown out exhaust]).
But the inside of valve covers is caked in this white crap. Reminds of white hand cleaner or crisco, with maybe a touch of brown tint. It's mainly sticking to the top/inside of the valve cover(more on right bank). Though some on the top of the rockers and some laying in the low points of the head(low stuff is milky). Plus a decent amount of rust all over. The rust is on the head and springs. More on the rear sides of head(6&8-5&7). But the most on the right bank, especially 5-7.
Which reminded me, the exhaust coming out this bank never seemed as strong as the opposite side. The exhaust tips have black rubber flappers to keep the water from coming back in. The exhaust tips sit above the waterline, but under the boats swim platform. The flapper on the left side bank(2-4-6-8) actually hits and marks the above swim platform. The right side(1-3-5-7) doesnt(or not much). This also follows the compression readings(2-4-6-8 reads higher).
I wonder if for whatever reason, I'm getting some serious condensation issues. The right side valve cover has a breather filter, where as the left cover is sent back to air filter. That might explain the rust and white stuff. If so, I wander if the rust is effecting the valves ability to seat.
I sprayed the valves, springs and heads with some lube oil. I tried to get as much of the rust out as I could. We'll see if the helps future tests....Last edited by repoman3809; 09-10-2012 at 05:11 AM.
I believe this was somewhere around 2015, Rick, Rosie and Johnboy
John Norton aka johnboy