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Author Topic: 1990 Suzuki DR350 Medusa Transducer Hellride  (Read 10816 times)

Offline Hurco550

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Re: 1990 Suzuki DR350 Medusa Transducer Hellride
« Reply #80 on: May 11, 2017, 19:59:09 »
I'm late to this party but I'll have some pretzels

No pretzels for E....
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Offline Mr.E

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Re: 1990 Suzuki DR350 Medusa Transducer Hellride
« Reply #81 on: May 11, 2017, 21:47:56 »
No pretzels for E....

Fine I'll eat the busted cashews everyone leaves in the bowl

Offline SONIC.

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Re: 1990 Suzuki DR350 Medusa Transducer Hellride
« Reply #82 on: May 12, 2017, 16:35:15 »
I rescind the offer to let you rebuild my 250. I prefer my cams in one piece  ;D

Online irk miller

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Re: 1990 Suzuki DR350 Medusa Transducer Hellride
« Reply #83 on: May 12, 2017, 16:48:46 »
I rescind the offer to let you rebuild my 250. I prefer my cams in one piece  ;D
Goddamn it.   :-\

Version 2 will work better.  I promise.

Online irk miller

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Re: 1990 Suzuki DR350 Medusa Transducer Hellride
« Reply #84 on: Jun 27, 2017, 11:13:24 »
We're back on the road. I was lucky enough to find a spare jug at a yard near me that was re-sleeved and bored to 86mm. Sent it out to Mototech USA to bore to 89mm. Installed JE piston and .032" copper gasket.

I also ordered a proper parting tool and machined a new cam to 18mm on all three journals, plus an oil groove on the middle journals. With a dial indicator, I insured the shaft was true within .001", which was my biggest mistake not doing before. Basically, my first cam had a twist between the three journals that caused it to corkscrew. This is one thing that caused the middle bearing to spin.  The top half of that bearing was thinner on top then bottom. I did that to seat the cam better and it was dumb.   I ordered two 18mm ID x 24mm OD and one 18mm ID x 25mm OD oil bronze bearings. I split the middle bearing and installed it with a roll pin to keep it from spinning.







This should last a lot longer.


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Online irk miller

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Re: 1990 Suzuki DR350 Medusa Transducer Hellride
« Reply #85 on: Jun 27, 2017, 11:32:57 »
The next project will be to convert to the TM33 to oval bore.  So, essentially it will be running a TM33 at the bottom of the bore and TM34.5 at the top of the bore.  This pic illustrates the mod for a TM40 to TM44, but the concept is the same:



The idea is to keep the torque and power at the bottom end, while also maximizing power at the top end.  With a straight bore, you sacrifice bottom end for top end.  Beings I still want it to be a mountain goat, I don't want to lose bottom end.  One obvious difference since I bored it to 440 with the TM33 is it has a significant torque gain.


 

Offline SONIC.

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Re: 1990 Suzuki DR350 Medusa Transducer Hellride
« Reply #86 on: Jun 27, 2017, 13:12:28 »
So how do you go about that?
Grind it out to shape?

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1990 Suzuki DR350 Medusa Transducer Hellride
« Reply #87 on: Jun 27, 2017, 13:31:44 »
Yep. A dremel with an assortment of mounted blue stones, white stones, sanding drums, cratex, and bayflex bits.  Or take it to someone with a mill. I'll do it by hand, tho.


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Re: 1990 Suzuki DR350 Medusa Transducer Hellride
« Reply #88 on: Jul 10, 2017, 20:40:08 »
I decided to go with a 37mm FCR, which was just ordered. I scoured Mid-O for a carb and came up empty. 

Also, took a couple 70s Suzuki racks, cut them up and made a rack for this thing. I'll blast it and powder coat it...




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Offline Maritime

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Re: 1990 Suzuki DR350 Medusa Transducer Hellride
« Reply #89 on: Jul 11, 2017, 08:24:31 »
Nice rack       ;D !
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