1982 Evinrude 200 Sport

[zdek]

I recently purchased a Glastron Carlson Ski Machine and want to learn more about the 200 Evinrude that's on it. I've grown up around boats - learned how to ski behind a 1958 10hp Sportwin, but have little experience with OMC V6's. My family has sold Evinrudes since 1938 and I love to wrench on them.

I have a few newbie questions and am looking to learn as much as I can - I see that a lot of you guys are a wealth of knowledge on these engines.
I see that some of the V6's are "loopers". Is that what I have? How are these different than a conventional 2 stroke? I'd like to do everything I can to get the most power out of my V6 and don't know what the common mods are.

I'm also looking at replacing my lower unit as I'm missing most of the skeg from the previous owner's run in with some rocks. My question is what will fit and is there a lower unit out there that would be better for high performance?

I've really gained a lot from these forums so far - thank you in advance for your input!


Joe Zaloudek
Tulsa, OK
1982 Ski Machine
1986 Formula 272

[Jeff_G]

Which type of engine depends on what year. Loop charged and crossflow are just different ways to introduce the fuel/air mixture to the combustion system.

[EMDSAPMGR]

Your engine is a high port, small bore crossflow. Your 200 uses the same porting as a 235 big block. It is a flatback engine with 1 5/16" carbs. It has 150/175 heads. These engines did not have a lot of low end torque, but made up for it with lots to top end rpm and hp. The first place to start is to make sure the engine setup is optimal-mounted high and with a high rake prop. You will need a water pressure guage. You can improve it's low end grunt with a set of early 235 small bore heads (872/873). Composite reeds are a nice addition. If you do these adds, you will need to jet the carbs up a few jet sizes to keep it cool at high rpm. If you want to get into machining, you can square the ports and add the 235 exhaust system. Your lower unit should be ok for your purposes unless you get to speeds where it blows out. A local marine shop can reweld a replacement skeg that will look like new.

[Forkin' Crazy]

First off that is a nice boat, but not really a speed boat. Ski Machine should queue you in on that! :) If you are going to play and ski with it, that is a great hull. As far as the skeg goes, you can have another welded on as long as you don't go with a low water pick up, because that puts too much stress on a welded skeg IMO.

Putting the 235 exhaust on a flat back would be way too much trouble and cost more money than it would be worth. You may as well get a whole motor (2.6L 235) that way you get the 10 extra cubic inches as well. I don't believe the 200 ports are as big as the 235s either.

Go to page 107 and 108. There is a good indepth discussion of the differences between crossflows and loopers.

http://www.vintagesleds.com/library/manuals/misc/Two-stroke%20Tuner's%20Handbook.pdf

Hope that helps!

[Jacob]

I've been trying to get a copy of that for a long time. I just printed it out!!!! THANKS!!!!!!!!!!!!!!!!!!!!!!!!! :thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup:

[Forkin' Crazy]

I've been trying to get a copy of that for a long time. I just printed it out!!!! THANKS!!!!!!!!!!!!!!!!!!!!!!!!! :thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::thumbsup:

Not a problem. Believe it or not, I have one of the orginals! It isn't in the best shape because I have read it SEVERAL times, and.............. have yet to understand it all by a long way! :o :)

BTW, I just saved a copy to my computer so I can pull it up and print any pages I want. :)

[Jacob]

Not a problem. Believe it or not, I have one of the orginals! It isn't in the best shape because I have read it SEVERAL times, and.............. have yet to understand it all by a long way! :o :)

BTW, I just saved a copy to my computer so I can pull it up and print any pages I want. :)

I just save a copy to my flash drive and printed one out. I'm putting it in a binder right now....I guess I know what I'm doing for the rest of the night at work.:D:D:D:D:D
Thanks again :thumbsup::thumbsup:

[zdek]

Thank you guys so much!!!

I'm an avid skier and LOVE the boat. It really is setup nicely and is great for what I do. With a 27 gallon tank, it's a great boat to explore all of the area lakes with. I'm with you on the speed issue - although it's quick and has a lot of punch, I don't really think its the most ideal hull for top end speed. Accelleration is amazing! I'm running a 19" prop and it pulls hard through the whole RPM range. I'd really need to add a pad to see anymore speed than I currently am.

So do I just leave her stock? It runs great - and I like the reliability, just don't know if there's any simple ways to bump the power.

Thanks again! I'm learning a lot!

[Forkin' Crazy]

The easiest would be tighter heads and maybe the 1 3/8s carbs. Granted that is only a 1/16" larger than what you probably have so it might not be worth it. Some of the 200s came with the bigger carbs, but you'd have to pull the air box to get a good look at the front of the carbs to make sure. It will say what size they are just below the carb throats. Either way you'd need to rejet and drop the timing a few degrees.

What ever you do, only run premium gas and a good oil. An additive such as BRP's Carbon Guard (added to the fuel) will help keeping carbon from accumulating on the piston tops and in the ring lands.

A good start would be a small offset hydraulic jack plate and maybe a 22" Raker. They make good bow lift and should be a good cruise prop. With the hydraulic jack plate you could raise the motor some and get rid of some drag. Be careful if you get one though. Too high and not enough water and you'll toast an engine before quick can get ready. A water pressure gauge is a must if you decide to go that route.

What will it turn wide open trimmed up?

Pad work is a booger on anything. You’d need to derig and flip it over. Plus you have to do it right and keeping it perfectly straight is imperative! IMO, I’d leave the boat alone as far as a pad goes and just enjoy it. If you really want to go fast, I’d go with a tunnel or padded V like a Hydrostream or Allison.