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Old 01-28-2011, 03:59 AM   #91
3uba296
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Great work and awesome thread!

Do you need to modify the engine block to get the cylinder with the 440 sleeve to fit?
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Old 01-28-2011, 11:50 AM   #92
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Do you need to modify the engine block to get the cylinder with the 440 sleeve to fit?
I don't think so... I hope not... Let me go check.
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Old 01-28-2011, 11:57 AM   #93
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The hole in the case is able 2.5mm bigger than the 440cc sleeve. My guess it the 460cc kit takes up the entire hole. Due to some of the bolt locations, you wouldn't be able to bore out the cases much larger, maybe a couple mm's, but it would be pretty pointless.
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Old 01-28-2011, 12:38 PM   #94
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Originally Posted by pablo83 View Post
The hole in the case is able 2.5mm bigger than the 440cc sleeve. My guess it the 460cc kit takes up the entire hole. Due to some of the bolt locations, you wouldn't be able to bore out the cases much larger, maybe a couple mm's, but it would be pretty pointless.
Cool, good to know. What about people saying yoy could get 500cc out of the 350 engine?
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Old 01-28-2011, 01:47 PM   #95
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Cool, good to know. What about people saying yoy could get 500cc out of the 350 engine?
People say all sorts of things. With enough time and money I'm sure you could.

The stock cases can accept a sleeve OD of up to 93mm. With the 71.2mm stroke of the 350's crank, you would need a 93.9mm bore to make 500CCs. I don't know how thick a sleeve needs to be, but you're looking at widening the cases (and moving some case bolts) or getting a stroked crank. I've never heard of a stroked crank for this bike, but that doesn't mean someone hasn't made one
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Old 01-28-2011, 02:00 PM   #96
yondering
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On your neutral switch "missing a cover". I think that's just how they are. Mine was the same way.

I think I read about someone grinding an offset crank pin to make a stroker crank for one of these. Jesse would probably know.

You do some nice welding, BTW.
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Old 01-29-2011, 10:16 AM   #97
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Subscribed, and awesome work on the swingarm!

Keep up the great work!

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Old 01-29-2011, 12:34 PM   #98
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Quote:
Originally Posted by 3uba296 View Post
Cool, good to know. What about people saying yoy could get 500cc out of the 350 engine?

I bored mine out to 450 and the engineers that did the sleeve and boring said it would be entirely possible to go to 500 with the room that was left.

The kit I used came from LA Sleeve and just maybe their sleeves are a bit thinner.

I just went out and measured a set of cases I have and the case hole was 98.26 mm so with that you could fit a sleeve that was damn close to 98 don't yer think???? With your figures that would leave a 4mm sleeve thickness. Stock thickness just measured at 3.5 mm.
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Old 01-30-2011, 08:32 AM   #99
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RMX swing arm

Sweet build. I would love to have the wider spread tranny, cant wait to hear how the final result works. FWIW my DR350 has an RMX swinger on it that is quiet stiff. I got it that way so I don't know if it was an easy swap but it looks to be a bolt up fix. Might be easier than welding the stock-er.
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Old 01-30-2011, 10:29 AM   #100
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Sweet build. I would love to have the wider spread tranny, cant wait to hear how the final result works. FWIW my DR350 has an RMX swinger on it that is quiet stiff. I got it that way so I don't know if it was an easy swap but it looks to be a bolt up fix. Might be easier than welding the stock-er.
I would love to hear from anyone who has done this, some people say its a pain and others say easy... Awsome build pablo, I wish I was knowedgable enough to tear that far into one. The higher 6th gear would be perfect!
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Old 01-30-2011, 12:55 PM   #101
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Quote:
Originally Posted by jessepitt View Post
Sweet build. I would love to have the wider spread tranny, cant wait to hear how the final result works. FWIW my DR350 has an RMX swinger on it that is quiet stiff. I got it that way so I don't know if it was an easy swap but it looks to be a bolt up fix. Might be easier than welding the stock-er.
I'd love to hear more about this too. Do you have any pictures of the shock mounts? Do you know what year/model your swingarm is from?
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Old 01-30-2011, 04:00 PM   #102
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Someone on one of the DR350 threads was recently commenting on their Jesse-modified exhaust. Shearboy, was that you? Anyway, I'd like to keep this bike real quiet and wanted to know if there was a noticeable difference in sound after Jesse's mod. Anyone?
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Old 01-30-2011, 04:15 PM   #103
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I'd like to keep this bike real quiet and wanted to know if there was a noticeable difference in sound after Jesse's mod. Anyone?
Yes.

It sounds better, deeper with a bit more volume but is still well muffled.

But, if you really want it quiet, don't deviate from stock.
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Old 01-30-2011, 07:29 PM   #104
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footpegs

The DR250S's footpeg brackets are rubber-mounted and heavier than the hard-mounted DR350's brackets.

I know some of these posts seem real random, but I'm just trying to document the differences in the two bikes as I come across them.
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Old 01-31-2011, 11:19 AM   #105
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RMX swinger

I will try to take some pics of the mounting locations today. I have to apologize in advance for the quality of the pics as my real camera just died of sand inhalation, so I will have to use my cell phone.
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