On Jan 30, 4:04*pm, Harry wrote:
On 1/30/10 3:47 PM, Tim wrote:





I'm looking at another boat. A 19 ft bowrider *trihull. the boat
itself is in great condition but the 100 hp. v-4 Evinrude has ow
compression on one cyl. they burned up a starter trying to get it
running. they got a starter put on and found out one cycl. is low.
Didn't say how low, but it's still not up with the other 3. They were
thinking on fixing it, but decided to get another boat and so they're
wanting to sell this one. Cheap! *i mean, the lower end on the engine
is probably what they want for the whole thing... Cheap!

I know that that to repair the engine is going to cost something. It
could be anything from a bad ring to a scored piston and cylinder. ,
But I'm not too worried about it because I have a 115 v-4 in my garage
with a one year old power head. But I'd rather see how bad the engine
actually is before I swapped it out. If a cylinder is scored that's
one thing, but if it needs a piston and/or rings that's another.

I don't know much about the v-4's but can you pull a piston without
having pull the flywheel and split the casings etc?

The engine is a 1979 Evinrude Javilin squared hood.

just curious.

If you look on this site, assuming the URL works:

http://shop2.evinrude.com/ext/index....f41179a6c0e561....

You're see an exploded view of that powerhead.

I don't see how you can remove a piston without splitting the casings.
How would you get to the wrist pin?

Here's the piston drawing:

http://shop2.evinrude.com/ext/index....9a6c0e561....- Hide quoted text -

- Show quoted text -

Why in hell would you need to get to the wrist pin until you got the
piston/rod assembly out, dumb ass? Standard procedu unbolt the rod
from the crankshaft, push the pistion/rod assembly out. That simple.