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Quote:

Originally Posted by mggdoors (Post 4688720)

Am I flowing water too fast out the tails?

Water cannot flow so fast that it will not cool a hot object. That is a myth. What could be happening is insufficient water around the pipe (water only on the bottom due to gravity), or the water there could be boiling locally. Both of those would be bad.

Quote:

Originally Posted by NautiSouth (Post 4688724)

I considered this with the riser. Where water dumps at the bottom of the 45 drop in pic there is no restrictor to force it to fill the pipe. I will add one tonight with 1/4” stainless rod and leave gap at top. Hell while im there Ill add mufflers as well pre water dump.

Correct, water too fast doesn't cause higher temps.

Also, exhaust leaks can cause/add to exhaust water reversion.

Quote:

Originally Posted by SB (Post 4688752)

Correct, water too fast doesn't cause higher temps.

Also, exhaust leaks can cause/add to exhaust water reversion.

So let me throw another curveball out there. Considering the reversion magically disappeared am I just burning it out with higher than normal exhaust temp. Also what should exhaust temps be, not egt but actual manifold/ riser temps

like you, some say they reduced initial timing so they could increase throttle blade opening to,and did, fend off their reversion issues.

I can't answer on the heat temp...I don't even know what is normal or not. I go by water flow out of tips and if the rubber connector doesn't burn, LOL,

BTW: I reread farther back and you said your exhaust is almost like the one I showed many other single engine Eliminators have. Well, it is not. Angle maybe close, but the one's like I showed have a much longer drop. I'm just pointing this out, That is all.

Quote:

Originally Posted by SB (Post 4688759)

like you, some say they reduced initial timing so they could increase throttle blade opening to,and did, fend off their reversion issues.

I can't answer on the heat tep...I don't even know what is normal or not. I go by water flow out of tips and if the rubber connector doesn't burn, LOL,

BTW: I reread farther back and you said your exhaust is almost like the one I showed many other single engine Eliminators have. Well, it is not. Angle maybe close, but the one's like I showed have a much longer drop. I'm just pointing this out, That is all.

Ya I caught that too with the length. The bbc exhaust sat higher at the manifold previously. So basically your saying run it and see if we fry the couplers. We have plenty of flow out back

Subject of cooling the exhaust.....Some s,all block guys have welded 16-18" inners to factory or GLM exhaust risers to keep exhaust stream drier for longer and just ran normal rubber exhaust as the outer installed in regular spot and no issues for years and years. Not saying to do this, they had smaller cams, just saying how long and open the outer vs inner some people have had with no issues. Granted, they where running normal drop, not as steep as yours,,,so not a 100% direct comparison but same subject.

Quote:

Originally Posted by SB (Post 4688762)

Im going to pull the thermostat and run itand see if temps change

Ok. Kinks worked out. Resurfaced risers. Exhaust leaks gone. Alternator took crap. Replaced. Power steering line ruptured. Replaced. Waiting on livorsi oil temp gauges to replace boost gauges. Prewired and ready when they arrive. Both were ran on hose for over an hour. Exhaust cools down after thermostat starts functioning. Reversion to manifold is none existent although if I pull the risers I can find droplets. Will install ggb mufflers after testing. Mounted and tig welded bimini. Wet sanded and compounded her. Going to lake Saturday and Sunday. Will be running holley dual planes initially as I just received the second trick flow manifold yesterday and dont feel like changing it yet. My boy Auggie at cutting edge is sending me some extra props to test with. Will be running 30 and 32 4 blades as well as my 32 5 blade. This boat last year got on plane 2 times and only 2 times with 4 blades. The ass end was very heavy without running extension boxes. 5 blades got here up but with alot of stern lift running. Im planning on the weight shed making planing easier but stern lift worse. Thats why I am testing 4 blades. That and the bravos were 8 mph faster than the 5 blades. Currently 1/2” above bottom with 1” spacer. 4 blades in this configuration would get her right there ready to tip over and boost would kick in and blow them loose. 5 blades did same but had just enough to grab.

One last thing to do. She needs a name. Previous owner had it named Aly’s Cat.
Heres my list. Help me decide. Enjoy
”Not that drunk” name of my old boat. Cops loved it.
”Hooter Scooter”
”wet kitty”
”I pull out” (What, I trailer my boat)
”prove it” for all the boys with there “100 mph” bayliners
”a-boation”
”dirty c-word”
“Smiles per gallon”