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 41 
 on: April 21, 2014, 06:50:51 PM 
Started by penguin - Last post by penguin
The good news is I screwed up only one hole.  Three are fine.  I tried to carefully chase the thread (keeping crap out of the cylinder) but no luck. Threads are done.  

Helicoil kit itself is $60 and it sounds like the consensus is that I should remove the head even if I go this route.  That has me thinking of possibly getting another head and keeping the damaged one as a spare.

I doubt I can get a new one - part is (obviously) discontinued.  I assume I would also need a new head gasket too.

 42 
 on: April 21, 2014, 06:06:31 PM 
Started by Keith_M - Last post by tolman_paul
I don't trust any scupper to seal over the long haul.  Between fish parts, leaves, sand, etc, they just can't be relied upon to seal.  If I was to build another widebody I'd elevate the deck 3 1/2" off the stringers (full width 2X4).  As I recall I raised my deck 1 1/2", and the scuppers end up underwater with four people fishing.  I keep the drains plugged when underway, and when we've built up enough water on the deck or when washing it down on the way back to the dock we pull plugs and let it drain.

 43 
 on: April 21, 2014, 05:56:58 PM 
Started by penguin - Last post by tolman_paul
Whatever course of action you take, you need to pull the head or else you'll end up with metal shavings in the cylinder, a bad thing.

I was talking to a mechanic about using a heli-coil on one of my snowmobiles that has a stripped spark plug thread.  He said to make sure I peen the end of the heli-coil, or else it will come out with the spark plug.

For $100 I'd just replace the head, and keep the old head as a spare.  Heli-coil kits aren't cheap.

 44 
 on: April 21, 2014, 03:57:44 PM 
Started by lowpine - Last post by Coldwater
Excellent job on the boat.  I really like the colors.  Great idea with the PVC...  I might have to copy that this winter!

What size outboard are you going to strap to the back of it?

 45 
 on: April 21, 2014, 03:51:49 PM 
Started by penguin - Last post by Coldwater
Agree with Jerry, pull the head and sort it out from there.  No need to risk turning this into a much more expensive project.

 46 
 on: April 21, 2014, 03:08:32 PM 
Started by penguin - Last post by jerry bark
OK, I am going to disagree with the above and give my take on the issue.

From your description it sounds to me like someone waaay overtightened the threads at some point, nothing you can do about this at this point. But I doubt that a thread chaser will solve the problem because it sound like ALL the threads let loose at once. beyond that my points to consider:

1.  Changing the head on a two stroke is not much harder than changing the plugs, a few more bolts and some gaskets to scrape away is about all.

2.  If you can get the parts for $100 I can see no reason to risk the cylinders of a perfectly good engine by chasing threads.

3.  If you take off the head and find the threads can be chased clean then you can return the parts and you saved money and did not risk leaving a couple of tiny metal shavings in your cylinder to cost you more money later.

4.  If you take off the head and want to go with the helicoil, well that's fairly easy too. Most auto supply stores have helicoil kits.

5.  double check your torque wrench before you put things back together just in case that might have been part of the problem. torque the head bolts according to the manufacturer's specified pattern.

I would personally choose to pull the head(s) and take a good look at things rather than risk getting shavings inside my engine.

That is my preference: spend $100 for a low risk/high probability of success repair and go fishing!

Good luck whatever you do,
Jerry

 47 
 on: April 21, 2014, 08:25:30 AM 
Started by penguin - Last post by penguin
Thanks for the helpful advice guys. It looks like I've got some options. I'll try to chase the threads first.  If that doesn't work I'll try Helicoil. Last option is a new head, but they look like they're not easy to find.

 48 
 on: April 21, 2014, 03:44:48 AM 
Started by lowpine - Last post by EasternshoreBob
What model trailer have you got there. My freebee trailer is getting a little hooptee.
Bob

 49 
 on: April 21, 2014, 12:42:40 AM 
Started by lowpine - Last post by penguin
Awesome work!  I really like the PVC pipe frame idea for the tarp - very clever.

Rod

 50 
 on: April 20, 2014, 10:27:59 PM 
Started by lowpine - Last post by captainfogfish
She's looking suberbasaurus shipmate , when do you start the next one LOL . Hopefully you'll get some scales and guts on the deck first time out after the official launch , tight lines and good fishing .
     Eddie

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