98 speedster blown engine

[mtrainer]

My 98 speedster has had all kinds of issues this summer.

First the r/h engine would only go up to 4500 rpms. I put new plugs in it and it did 2 good laps around the lake full rpm. then it bogged out and died

I tried to restart it only to find out my starter was shot. Pulled the starter and found a broken brush lead and a ton of carbon. So I replaced it.
I also decided to clean my carbs

So I got it all back together and started it up.
Only to find out that there was a chunk of the crank case about 4x2 inches sitting under my engine as well as a bunch of smaller chunks.

Not sure if a crankcase seal went bad or if i threw a rod. My cylinder compressions were in the 160s. Im not sure if i should pull the engine and send it in or re-build the lower end.

I have rebuilt aircraft recip. engines before and worked on bombardier aircraft my whole career, but never rebuilt or even pulled out for that matter a rotax engine.

Any advice would be great. Thanks

 

[Dr Honda]

Personally... I would pull it out, and just get a rebuilt from SBT.

 

[RFoster130]

Personally... I would pull it out, and just get a rebuilt from SBT.

You can't beat it really. 1200 bucks with a 2 year warranty.

 

[mtrainer]

update

 

[Dr Honda]

Yep... that's not good.

 

[mtrainer]

2nd update. Engines out and some what taken apart. Heres a pic of the hole in the crank. Also had a piston go bad...

 

[Dr Honda]

I know how you feel. I'm in the middle of putting a Merc engine back together. Rod let go, and blew a big hole in the engine.

For you... it's not a big deal... SBT will take that as a core. For me... no one will take my Merc... and it's a $4500 engine.

as above... $1200, and you will be up and running again.

 

[mtrainer]

Wow. That ones pretty much done for. Im still thinking of just taking mine to work and throwing it on my roll-away box in the hanger and working on it when i have done time. We have a couple really good recip guys at the shop. I really want to get the boat fixed and sell it... I have my eye on an 05 speedster 200 that the guy keeps lowering the price on by me

 

[m.colley]

I know how you feel. I'm in the middle of putting a Merc engine back together. Rod let go, and blew a big hole in the engine.

For you... it's not a big deal... SBT will take that as a core. For me... no one will take my Merc... and it's a $4500 engine.

as above... $1200, and you will be up and running again.

Wow Doc, is that out of the Islandia?

 

[Dr Honda]

Wow. That ones pretty much done for.

Nope... it's going to live again !!!!

Im still thinking of just taking mine to work and throwing it on my roll-away box in the hanger and working on it when i have done time. We have a couple really good recip guys at the shop. I really want to get the boat fixed and sell it... I have my eye on an 05 speedster 200 that the guy keeps lowering the price on by me

The 200 is a nice boat. If you have a TIG at your shop... put the chunks back in the case, and get it runin'.

Wow Doc, is that out of the Islandia?

Yep. That's my project engine. Cant be scared of a little hole if you want to save big $$$ on a toy. Once it's done... I will be into the Islandia for about $7500. The going price right now on a 2002 is around $14k.


Here's what I spent the day doing today.

 

[m.colley]

Yep. That's my project engine. Cant be scared of a little hole if you want to save big $$$ on a toy. Once it's done... I will be into the Islandia for about $7500. The going price right now on a 2002 is around $14k.

Doc,
Your right and your an inspiration. I've got my eye on two ski's for a project this winter if I can get them for the right price.

Martin