1990 Suzuki DR350 Medusa Transducer Hellride

irk miller

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So begins a more appropriate cross country enduro I hope to raise a little hell on. The bike came up on Craigslist for $300.



The plan is not to go nuts, but instead to build a 70/30 enduro I can take into the mountains or to the shore.

A major issue with these dirt bikes is scorched heads...



Mine is extra glorious with a special cam..



Replacement heads aren't super plentiful, and seem a bit pricey when they show up on eBay. Right now, I can get a decent head and rocker assembly for $420 plus shipping from Portugal, or a NOS head minus valves, cam and rockers from Singapore for $700.

So, the plan is to machine the journals, and convert it to needle bearings and a split bronze bearing...








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irk miller

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Re: 1990 Suzuki DR350 Moonbat Hellride

As I get parts in for the head rebuild, I'm going forward with the rest of the bike. I replaced the entire front controls, plus the front caliper from an RM. I'm considering moving to an RM front end eventually, which I happen to have, but for now I'm sticking with the good stock forks I have on it now...







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irk miller

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Re: 1990 Suzuki DR350 Moonbat Hellride

Going dual sport on wheels with a Kenda front and a Shinko rear...






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irk miller

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Re: 1990 Suzuki DR350 Moonbat Hellride

I cut the stock can off the exhaust and rebuilt a Supertrapp I got for cheap at Barber this past fall...



The can was pretty banged up from use, but also because someone decided to pound a reducer like you get from Autozone on the end of it.

How I straighten a tube is with a one-inch steel rod (in the second pic all the way to the left). The rod is threaded at one end so I can thread a handle onto it. Simply lay the tube on an anvil, dent down, and bang the dent out making sure the rod hits flat to the surface. With a handle threaded on, roll the rod and tube together to stretch the dent out, much like working with an english wheel.









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SONICJK

Reminds me of...me No, I'm sure of it. I hate him
Re: 1990 Suzuki DR350 Moonbat Hellride

Yessir.
The force is strong with this one.
 

irk miller

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Re: 1990 Suzuki DR350 Moonbat Hellride

Thanks for the support fellas.
 

Tune-A-Fish

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Re: 1990 Suzuki DR350 Moonbat Hellride

I am pretty sure Cycle World had great reviews for handling on those, you can dig up the article and read up somewhere. The Soooooper Trap is spot on period correct.

I'm in


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irk miller

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Re: 1990 Suzuki DR350 Moonbat Hellride

Tune-A-Fish© said:
I am pretty sure Cycle World had great reviews for handling on those, you can dig up the article and read up somewhere. The Soooooper Trap is spot on period correct.

I'm in


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Thanks Tune. There's an article somewhere that someone sent me about a guy that rode one of these across the country, but I can't remember the link. There are definitely plenty of stories that praise the merits of this bike.
 

irk miller

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Re: 1990 Suzuki DR350 Moonbat Hellride

Got me a few goodies to put towards rebuilding this head....




Plus a couple Supertrapp decals, one for the rebuilt can.


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whynot

~~~If it ain't raining, I'm riding~~{iii}?~~prost~
Re: 1990 Suzuki DR350 Moonbat Hellride

I'm in.....been watching all your builds Eric, why not one more.........

Wish I had the gumption you got to get some of my projects up and running..............
 

irk miller

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Re: 1990 Suzuki DR350 Moonbat Hellride

Well guys, the band is back together.
 
Re: 1990 Suzuki DR350 Moonbat Hellride

That looks like an enduro DR350, not the tamer dual sport DR350S, it'll have higher compression, a hotter cam and possibly a flat slide carb.
 

irk miller

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Re: 1990 Suzuki DR350 Moonbat Hellride

julian.allard66 said:
That looks like an enduro DR350, not the tamer dual sport DR350S, it'll have higher compression, a hotter cam and possibly a flat slide carb.
You're exactly right. It's a DR350, the dirt model, and another reason heads can be hard to source since they ran two completely different heads all the way through 1996. Carb is a Mikuni TM33 flatside. Still a 6-speed, but different gearing ratios. Compression is the same though, at 9.5:1. Cam specs are the same too.
 

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