Exhaust riser gaskets

[nick8519]

1983 Sea Ray with 228hp engine. Noticed a rather decent difference in temps of exhaust elbows after running a bit. Took elbows off and it had the restricted gaskets on it. One port (the small singe hole) of one gasket was totally plugged with rust. I cleaned everything up real well and ready for reassembly.
My question is: Can I/should I use the open port elbow gaskets? Or stick with the restricted?
My thinking...open ports, more water flow, cooler temps. Cooler is better? Yes/No?

Thanks

 

[boatermarquis]

ive never heard of that before,but put what it calls for,because that may change the pressure,and water flow too fast,but yeah more water flow does sound better.

 

[JaCrispy]

https://www.perfprotech.com/blog/articles/marine-exhaust-tips

 

[achris]

My question is: Can I/should I use the open port elbow gaskets? Or stick with the restricted?
My thinking...open ports, more water flow, cooler temps. Cooler is better? Yes/No?

Thanks

Need to know how the hoses are laid out on your engine... Have a serial number?

 

[nick8519]

6225286

 

[achris]

That engine requires restrictor gaskets in between the manifold and the elbow. They are required to get the water flow to run correctly.

The correct gasket looks like this....

 

[NHGuy]

N the slots are on the sides, with the little round holes fore & aft. Clean off the mating surfaces with a scraper, make sure they are flat. The bolts only need 25 foot lbs. Don't go all gorilla on the bolts.