i offerd 45k and he turned it down soooooo, we'll see what happens he said he would think about it a little longer

i would turn up the heat a bit and let him know your going to put in an offer on another boat by the end of the week. i would think that would take it.

Hey guys... this is sonicbunny's husband...

We have a 03 Sonic 31ss with 575sci's....

Great motors but here is what we've learned...

Blowers need rebuilding at around 200 hrs...
Heads need to be gone through at around 300 hrs.... we are there now but will be running the boat this season then pulling the heads this coming fall for rebuild.

The scream of the blower is worth the wife screaming at how much fuel they drink.... lol

You don't by chance crack those engine hatches a little when there screaming do you. (music to the ear) Only to make sure they get sufficient cool air right. RIGHT.... LOL.

thats the info i was looking for thx. from what i've read on here bds is the place to get the blower rebuilt? any ideas how much? it looks like this deal might go thru ( i hope) so i might have the blower rebuilt before the season starts ( till on the snowmobiles out here) what goes wrong in the heads?

Early 575's had better blowers (Weiand, not B&M) and not so good head gaskets. Later 575's had not so good blowers (B&M's that had bearing issues) but better head gaskets (Cometic ?), from what I know about those engines. We never had any issues with ours and we ran it in North Carolina heat all summer long. It always started right up and ran fine. My wife and daughter did complain alot about the blower whine, though

the blower whine is gonna be a bonus, right?

when is the early versions? i'm lookin at a 2004 so i'm guessing thats the later version? so it's probably a b&m?

I would not go to TBS to get them rebuilt. I, along with many others on here, use Darrin Meyers in MI. They run around 500-600 for a complete rebuild.
Eddie

do you have a contact # for him?