I'm planning on taking out my manifolds as they are leaking a little. My dealer is far from me and I think I'm gonna do it today. My question is, is there any store, not online, where I can buy the gaskets. I have an indmar 5.7L rtp-1.
What type of boat is it? I'll bet you can find them at skidim.com
They're awesome people. Give them a call if you're not sure what you need.
I had the same problem a while back and it turned out my manifolds and risers were cracking. I ordered new ones from skidim. Make sure you know someone who can get a broken bolt out just in case. (Machine shops are good for this.) It can be a very simple project or a crazy long project depending on the corrosion.
Indmar uses a GM 350 engine. So you can get the gaskets at about any part store. Some part stores even have the marine ones. But the non-marine should work just as good.
Leaking manifolds? There's no reason for your manifolds to suddenly start leaking unless they're cracked or rusted through. If anything, cleaning them will just make it worse. IMO don't take them apart unless you can afford to replace them if you find problems.
If your running in Saltwater it's not unusual to see them seep a little. If you pull the risers you can tell by looking at the gasket if it's leaking most of the time.