25 Outlaw Whipple Merc 525 EFI
#81
Registered
Thread Starter
Hmm, now that you mention it the cometic gasket number that came off are C5333-051 which are 4.540 bore and .051" thickness. Bored to 4.5"?
Again I was so focused on valvetrain I didn't even think to check these basics out...
Again I was so focused on valvetrain I didn't even think to check these basics out...
#82
Registered
iTrader: (3)
It also be a good idea to check the deck height, and see how far the piston is below the deck. Many shops will zero deck the block. If zero decked, and .051 headgasket, you have .051 quench. If piston is in the hole .010, you have .061 quench, and so on. Also effects the static compression ratio.
#83
Registered
Thread Starter
Gotchya. Thanks again M T. I'll do some more measurements tomorrow. The plot thickens...
#84
Registered
So how do we feel about picking the motor by the four corner header mount bolts? They're 3/8-16 bolts. The only thing that makes me slightly nervous is the bolts seem to have a little play or slop when threaded in, a very small amount, not sure why, maybe because of the stainless header bolts in the aluminum heads? More than one shop I've talked to about picking the motor says they pick them with a spreader bar and loop straps underneath the headers, but I'd like to avoid that if possible.
[ATTACH=CONFIG]565415[/ATTACH]
[ATTACH=CONFIG]565416[/ATTACH]
[ATTACH=CONFIG]565417[/ATTACH]
[ATTACH=CONFIG]565415[/ATTACH]
[ATTACH=CONFIG]565416[/ATTACH]
[ATTACH=CONFIG]565417[/ATTACH]
https://www.mcmaster.com/#hoist-rings/=16xr0o6
The hoist rings might help, but can you get a different strap to get that big hook out of the way? I'd hate to see a big gouge in that gasket surface.....
Very cool thread.
#85
Registered
iTrader: (3)
I put a long grade 8 bolt in each corner of the engine at the exhaust holes. And then use sewn loop straps, 1 inch wide with the reinforced ends for abrasion resistance. Works great. No chsins dragging all over the engines, more than enough carrying capacity, and engine lifts nice and straight.
#86
Registered
Thread Starter
What about something like this to help hoisting? You can bottom the threads, get full engagement and get rid of the slop you're worried about. A little pricey but might be worth having in the toolbox.
https://www.mcmaster.com/#hoist-rings/=16xr0o6
The hoist rings might help, but can you get a different strap to get that big hook out of the way? I'd hate to see a big gouge in that gasket surface.....
Very cool thread.
https://www.mcmaster.com/#hoist-rings/=16xr0o6
The hoist rings might help, but can you get a different strap to get that big hook out of the way? I'd hate to see a big gouge in that gasket surface.....
Very cool thread.
#87
Registered
Thread Starter
I put a long grade 8 bolt in each corner of the engine at the exhaust holes. And then use sewn loop straps, 1 inch wide with the reinforced ends for abrasion resistance. Works great. No chsins dragging all over the engines, more than enough carrying capacity, and engine lifts nice and straight.
#88
Registered
Thread Starter
Did some investigating on the valve springs. PAC tells me they're not their springs. I believe they're afr 8002, blue and black strip on them is what points me to those along with specs being close. The afr 8002 spec 165lb @ 1.980", 475 spring rate per inch, 1.180" coil bind. I measured install at 1.967" so that would put my seat pressure at 172.125 according to specs, but I definitely did not measure that unless my gauge is that far off... Open pressure would be 472.325 exhaust and 461.875 intake.
I suppose it wouldn't be a bad idea to measure all the springs while heads are getting resurfaced.
I suppose it wouldn't be a bad idea to measure all the springs while heads are getting resurfaced.
Last edited by IGetWet; 03-27-2017 at 04:47 PM.
#89
Platinum Member
Platinum Member
Bad ass 25OL! I remember talking with you at Four Horseman last couple years. Look forward to seeing boat this year. I had a 25ol with procharged 496 years ago and had a lot fun in that boat. Cool project!
#90
Registered
Thread Starter
Cool and thanks! What hp and speeds with your outlaw? Looking forward to the four horsemen as well but at this rate it seems like I'm going backwards and it'll never get done. But the boat did come out of storage today and is at the fiberglass man to touch up some small stress cracks. Heads are getting resurfaced then it should start coming together.