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Old 11-30-2009, 07:19 PM   #31
BikePilot
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Procycle, awesome results! What have you done to the motor other than the big-bore?

Judging from Gman's builds of these motors and my guess from fiddling about a bit with a stockish one, I'd guess there's a lot to be gained by making it flow better - larger carb, oversized valves and a much more aggressive cam. He also removed the counterbalancer for less rotating weight - claimed it didn't make much difference in vibs, but that's a bit counter-intuitive... I do suspect that with good stiff valve springs and Ti retainers you could probably fit a DR250SE ECU for a bit higher rev limit too.

For that matter, what have to you done to the chassis? I find that my motor (stock bore, wiesco pistion, TM33SS, FMF Q, header weld ground down and ceramic coated, airbox opened up, properly jetted etc) will easily overwhelm my stockish chassis in most off road environments.
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Old 12-02-2009, 03:59 PM   #32
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Quote:
Originally Posted by BikePilot
Procycle, awesome results! What have you done to the motor other than the big-bore?
For that matter, what have to you done to the chassis? I find that my motor (stock bore, wiesco pistion, TM33SS, FMF Q, header weld ground down and ceramic coated, airbox opened up, properly jetted etc) will easily overwhelm my stockish chassis in most off road environments.
Everything else is pretty much stock. I bought the bike to use as a test mule. When I pulled the motor apart I was pleasantly surprised to find a White Brothers cam and aftermarket valve springs and retainers. Other than that the ports and carb are stock. The airbox is wide open and it has a Pro Circuit exhaust system. The chassis is completely stock but improvements there will come later - after the 480 kit development is done.
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Old 12-14-2009, 04:14 PM   #33
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Thanks for the input everyone. Special thanks to Jeff for the dyno-charts!

I know I have enough parts to make one good DR350, but in the back of my mind I keep hoping I'll end up with two.

Got another '99 DR350SE head off ebay, hasn't arrived yet. Looked ok in the pictures.

Ordered a Renazco seat. All vinyl, black matte grain top, black pigskin sides and silver seams and logo.

Finally connected with Jesse today and talked about his big bore kit and head work. It turns out it's a 455. Here are the details:
  • Aluminum sleeve nicasil plated, much lighter and dissipates heat better he says!
  • Stock DRZ400 piston, same deck height as stock dr350 piston.
  • Larger stainless valves, don't know new size yet.
  • Multi-angle valve job.
  • Clean up head for better flow.
  • MegaCycle mild cam.
  • Weld and modify rockers.
  • R/D valve springs.
I really would like to go with the FCR37 and will probably hold off on the swingarm, but we'll see.
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Old 12-14-2009, 04:40 PM   #34
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That thing is going to be a beast.
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Old 12-15-2009, 03:16 PM   #35
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Procycle,
Great luck with the cam and such! I bet a larger carb and porting to match would free up the top end quite a bit. Surely the 33mm carb is strangling it a bit. A more aggressive cam might help with the detonation, but sounds like you've got that sorted with jetting.


DisTech, the aluminum sleeve sounds promising! I've not used one on the DR, but they sure hold up well in my MX bikes.
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Old 12-16-2009, 04:20 AM   #36
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Thumb Oh yeah

Man thats going to be nice bike, or should i say bikes , better start the DR350 Builders "wall-o-fame".

Do the first with the FCR37 (they are whey cheaper than the 39mm) and then go injection on the second, are you watching the FI DR350 thread on TT ?

Get John to port your heads, grab a couple of Jeffs 480 kits when he`s ready.

This thread will have everyone scouring the local paper for a DR350, mines the Quokka (whats a Quokka?) and there have been some very cheap 350`s for sale.

Hey Distech, DR650 snob, very funny

The real funny thing was BSR-1 "Newbie" now that was funny.

Good choice of seat by the way, is it done by Chris?

Suuuubscribed !!!


Poprcorn muncher & all.


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Old 12-16-2009, 05:51 PM   #37
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Quote:
Originally Posted by Clayjars
That thing is going to be a beast.
I hope it is beastly, but managable.

Quote:
Originally Posted by BikePilot
DisTech, the aluminum sleeve sounds promising! I've not used one on the DR, but they sure hold up well in my MX bikes.
Yes, I hope so. I was surprised when Jesse told me that's what he uses, in a good way!

Quote:
Originally Posted by Mezo
1. Man thats going to be nice bike, or should i say bikes , better start the DR350 Builders "wall-o-fame".
2. Do the first with the FCR37 (they are whey cheaper than the 39mm) and then go injection on the second, are you watching the FI DR350 thread on TT ?
3. Get John to port your heads, grab a couple of Jeffs 480 kits when he`s ready.
4. This thread will have everyone scouring the local paper for a DR350, mines the Quokka (whats a Quokka?) and there have been some very cheap 350`s for sale.
5. Hey Distech, DR650 snob, very funny
6. The real funny thing was BSR-1 "Newbie" now that was funny.
7. Good choice of seat by the way, is it done by Chris?
1. Thanks, I hope the bike(s) turn out well and yes I would like to see DR350 w-o-f.
2. I doubt it will be the first FCR37, but I am liking that idea. Yes I have been following msiddalingaiah's FI thread, but he tends to talk over my head on the subject. wildwestsydney's winter project isn't as flash but I sure could understand it better.
3. I'm leaning toward Jesse's 455 because of the aluminum cylinder and because he will take care of the whole top end in one package (and I need to get my Two Brothers mid tube converted for a GSXR can on the DR650).
4. There are still quite a few DR350's looking for a home.
5. Ha! And I had to taunt you a second time!
6. Yea, something funny there.
7. Yes, Chris is the man. He is local to me so I drive out to his place with the pan and pick up the finished seat. He has a beautiful spread. When I ordered my DR650 seat I was getting pissed that you (on the other side of the globe) and mx_rob (on the other side of the country) got your seats before me! Ha! But Renazco seats are worth the wait.

Glad you're on board!
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Old 12-17-2009, 01:07 AM   #38
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Quote:
Originally Posted by DisTech
but he tends to talk over my head on the subject.

Yes, Chris is the man. He is local to me
Duh !! Seattle/Washington !! fuck am i stupid or what, guilty as charged.

My time in the US was spent on the west coast (San Diego) i need a holiday on the east coat, haa.

Look the fuel injection thing is new to all of us, you have the brains to do it & there is heaps of support from the nerds (friendly petrol head nerds) if you try & get stuck those guys will help you all the way, msiddalingaiah even offered to sort the code for anyone wishing to give it a go

Im sure you have seen Rob`s new thread on the FI650?

I need to learn this stuff, as do you, Lukas, Rob, etc etc, what i want to know is what color are you going to paint the frame? Zsss, or did you say that already? haa.

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Old 12-17-2009, 05:43 PM   #39
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Bought the '99 SE head (the one on the right) off ebay hoping it would be interchangeable. I knew the cams on SE's were different, but I didn't know how they were different. Now I do. Look at the sparkplug end of where the camshaft is supposed to stop. The '99 camshaft is about 0.375" longer. The bolt patterns look the same so it probably would be interchangeable if I had the entire top end and could live with auto decompression. The cam journals would need some work, but the other side is in much better shape than the '93. Dang!



Probably pull the '94 head just so I can get rolling with the project and keep my eye on ebay for a proper head.
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Old 12-17-2009, 06:05 PM   #40
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Quote:
Originally Posted by Mezo
I need to learn this stuff, as do you, Lukas, Rob, etc etc, what i want to know is what color are you going to paint the frame? Zsss, or did you say that already? haa.
I'm not afraid of trying FI, but I'm not sure I want tackle it this winter. Black frame and white plastics!
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Old 12-17-2009, 06:19 PM   #41
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I would maybe take the 99SE head off yer if you have no use for it.
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Old 12-17-2009, 07:22 PM   #42
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Quote:
Originally Posted by DisTech
The bolt patterns look the same so it probably would be interchangeable if I had the entire top end and could live with auto decompression.
Are there any issues with auto decomp on this bike? Do you know what years had it?
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Old 12-17-2009, 07:29 PM   #43
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Old 12-17-2009, 09:19 PM   #44
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Quote:
Originally Posted by pablo83
Are there any issues with auto decomp on this bike? Do you know what years had it?
94 on.. I believe, pretty reliable, just more stuff, harder to do a compression test and the cam cost more. Also i think the aftermarket cam for the auto decomp head comes without it. So your back to no compression release unless you rig your own. might be a problem with a big bore at 12:1.

mudmantra screwed with this post 12-17-2009 at 09:24 PM
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Old 12-18-2009, 05:41 AM   #45
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DisTech you have a pm.
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