Author Topic: YZ 360 Aluminum Frame  (Read 20547 times)

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Offline SMPDaddy

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Re: YZ 360 Aluminum Frame
« Reply #45 on: April 27, 2012, 11:28:14 PM »
Does that 360 have power valves? whats the stroke x bore? just curious

It's 82mm x 68.8mm so it's technically a 363.  Yes it has a power valve.

Offline 2STROKEREVOLUTION

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Re: YZ 360 Aluminum Frame
« Reply #46 on: July 26, 2012, 12:05:35 AM »
On a different note I spotted a 1999 YZ250 on craigslist that was being parted out and snapped it up today.  It has a crack in the cylinder near the exhaust bridge but some work and TLC and this bike should be great again.  The guy even threw in a gasket set, new wiseco piston kit and swingarm bearing kit.  I won't even say the price because it was a steal lol.  I hate to see a two stroke die like that.  They deserve to be restored and ridden and not parted out.  In the next couple months I am going to post so pictures of the 99 and my 360 and do some side by side shots because it should be cool.

Be careful there. Cracked and welded Aluminum is WEAK. You can weld it and plate it but chances are it will crack again. Get a steel sleeve to keep the strength. Another option is weld it, then heat treat it, then plate and hone it to size.

Offline SMPDaddy

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Re: YZ 360 Aluminum Frame
« Reply #47 on: July 26, 2012, 07:50:44 AM »
On a different note I spotted a 1999 YZ250 on craigslist that was being parted out and snapped it up today.  It has a crack in the cylinder near the exhaust bridge but some work and TLC and this bike should be great again.  The guy even threw in a gasket set, new wiseco piston kit and swingarm bearing kit.  I won't even say the price because it was a steal lol.  I hate to see a two stroke die like that.  They deserve to be restored and ridden and not parted out.  In the next couple months I am going to post so pictures of the 99 and my 360 and do some side by side shots because it should be cool.

Be careful there. Cracked and welded Aluminum is WEAK. You can weld it and plate it but chances are it will crack again. Get a steel sleeve to keep the strength. Another option is weld it, then heat treat it, then plate and hone it to size.

I ended up having an LA Sleeve put in.  Today was the first day of break-in and it went pretty well.  The previous owner didn't know crap about maintenance and I got the bike in a series of black plastic garbage bags.  so I ended up putting new bearings all over the place, replacing bolts, complete frame up build, some new plastic, etc.  I still need to finish break-in, fix the jetting on the carb, change the suspension settings and so much more.  I found some great complete rims/tires on eBay for a good price so I swapped out the old rims.  I kept some of the old plastic on it because I expect to lay it down a couple times this week and then the following week it'll get graphics and fresh plastic on it.

Before




After



My two YZ's side by side for the first time



Offline SMPDaddy

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Re: YZ 360 Aluminum Frame
« Reply #48 on: September 26, 2012, 05:44:42 AM »
Here are a couple new pix of my pride and joy.  I love this thing, some tweaks to the jetting and suspension and it has been running like a champ.  Super stable, light weight, tons of torque and just too much fun to be legal.  Makes you wonder WTH the AMA and the big 4 were doing pushing those 4-stroke piece of crap machines onto our sport.  Anyway... Props to Motographix for their awesome work and MPS Racing for the bike.



Offline SachsGS

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Re: YZ 360 Aluminum Frame
« Reply #49 on: September 26, 2012, 10:58:43 PM »
Wonder how many of those Yamaha could sell? Awsome bike! ;D

Offline scotty dog

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Re: YZ 360 Aluminum Frame
« Reply #50 on: September 27, 2012, 05:02:10 AM »
Wonder how many of those Yamaha could sell? Awsome bike! ;D
I reckon S4!T LOADS!!! Love ya bikes SMP Daddy, I'm jealous, especially of the 360
F**K THE WHALES......................SAVE THE 2 STROKE!!!!

The hardest part about riding a 4 stroke is telling your parents your ****!!

05 CR 250

Offline SMPDaddy

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Re: YZ 360 Aluminum Frame
« Reply #51 on: September 27, 2012, 05:07:39 AM »
I think if they got their head out of their a$$ they could sell a bunch of them.  They could easily mod their existing frames and drop in a 250 will little effort and they'd have one of the best bikes ever but they stupidly got behind the 4 strokes and will probably continue for a while.


Offline ebolhuis

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Re: YZ 360 Aluminum Frame
« Reply #52 on: October 10, 2012, 11:02:31 PM »
Not only should Yamaha produce this as a 250 but also as a 360 like you have... I've long thought that a 350-360 two stroke was just about the ultimate open class 2 stroke...  Would love a bike like that as I also race vet classes where it's race it if you got it rather than displacement based. I am currently rebuilding my 2003 RM250 from the ground up but one of these may be next on the list.




2003 RM250
2005 RM65 (my son's)
2006 GSXR-1000 (my 4 banger)
75 HON Z50,76 HON CT90,81 SUZ TS185,82 HON XR200R,84 SUZ RM125, 87 KAW KX500,88 SUZ RM250,86 KAW Ninja 600R,90 KAW KX250,87 YAM XS650,98 KTM LC4'03 SUZ GSF1200S,07 YAM YP400,07YAM TTR50,06GSXR1000(current),
05 RM65(son current),03 RM250(current), presently race 40+C MX..

Offline bad72ss

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Re: YZ 360 Aluminum Frame
« Reply #53 on: October 25, 2012, 01:29:56 PM »
SMP every time i see your bike i want to get mine done more.

Offline FactoryX

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Re: YZ 360 Aluminum Frame
« Reply #54 on: October 25, 2012, 03:11:26 PM »
 :o