443 Mito

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yazza54
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443 Mito

#1 Post by yazza54 » Tue Nov 17, 2015 9:28 am

Just thought I'd post some pics of my recently completed project. It's on the rdlc and uk 2 stroke forums but haven't put anything here before.

Aprilia wheels, forks, yokes, Honda rs250 wilburs shock, tz250 5ke subframe and billet mounts, tz250 fairings, 443cc 7mm cub motor, wicked billet head and intake, VF4 reeds, straight cut gears, 38mm mikunis, TSA custom pipes, ignitech etc etc..

Had to have some bits of machining done to my own design by my friendly engineer, but generally speaking it's all my work.

Still some set up work to do, unfortunately didn't have the right needles for the carbs on the dyno so need to go back, midrange was shit and very rich up top. Made 109 rwhp 9500rpm & 61ftlb 9250 on a flat ignition map. This was on John Warrington Motorcycles dyno. Need to get it sorted but the potential is there. From my initial tests with different needles on the road it's getting there.

Hope you like, cheers Ryan

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As you'll notice I'm pants at taking pics.

https://www.youtube.com/watch?v=1bSypLcclvg" onclick="window.open(this.href);return false;

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Benno #03
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Re: 443 Mito

#2 Post by Benno #03 » Tue Nov 17, 2015 9:52 am

Very Nice Work Mate.
76 TZ350(project).
82 RD350LC.
82 SR250.
83 RZ350YPVS.
88 RZ250 YPVS(project).
83 FJ1100.
96 YZF750R(track bike).
99 YZF1000 R1.
00 YZF1000 R1.

72 CB750four.
Lifan 125 Pitbike.

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JonW
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Re: 443 Mito

#3 Post by JonW » Tue Nov 17, 2015 6:43 pm

Good to see you posting here Ryan :)
80 XT500 Supermoto!
81 RD350LC Resto
82 RD421LC Hybrid
82 RD350LC decapitation project
82 RD250LC JDM '251LC' YPVS
83 RZ350 Resto
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JanBros
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Re: 443 Mito

#4 Post by JanBros » Tue Nov 17, 2015 8:13 pm

nice bike :smt038
if it runs, you can race it !

TDR_50
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Re: 443 Mito

#5 Post by TDR_50 » Tue Nov 17, 2015 9:41 pm

Hey Ryan,

Looks and sounds good!!!!
" Curing my Midlife CRISIS 1 turn at a time"

http://www.tdrracing.com" onclick="window.open(this.href);return false;

http://www.tdrrz.com" onclick="window.open(this.href);return false;

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Questo vecchio rz
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Re: 443 Mito

#6 Post by Questo vecchio rz » Tue Nov 17, 2015 10:03 pm

WOW! 109 h.p. & 61 lbs tq. !! No need to say much more, thats one of the 1 st examples of what a 7mm stroker is capable of, that Ive viewed.
Banshee (Baja) race bike,+ 2 A Arms,L.E.Ds, Toomey, +4 stroker IMS tank, run flats.
96 GSXR SRAD, Future Yoshimura rep.
85 custom Tri-Z
RZ/YZR bike(project)
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Hellgate
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Re: 443 Mito

#7 Post by Hellgate » Tue Nov 17, 2015 11:46 pm

Beautiful bike!
Cheers!

Pete

'12 Tuono V4R APRC, '05 R6, '88 RZ350, '82 XV920R

silverstrom
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Re: 443 Mito

#8 Post by silverstrom » Wed Nov 18, 2015 1:03 am

Wow :smt103

Superb. Well done.

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L.B
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Re: 443 Mito

#9 Post by L.B » Wed Nov 18, 2015 3:43 am

Gets you thinkin dont it John.....

yazza54
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Re: 443 Mito

#10 Post by yazza54 » Wed Nov 18, 2015 4:13 am

Thanks :) worth saying as well for anyone considering a long stroke motor - my crank is one of Roger's at wicked, all uprated bearings etc. The motor is very smooth. Surprisingly so for a big twin. I've read some people having vibration issues but I'm very impressed.

yamasukiman
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Re: 443 Mito

#11 Post by yamasukiman » Wed Nov 18, 2015 6:09 am

A lovely bit of kit!!
Hats off to you.
What does it weigh??

yazza54
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Re: 443 Mito

#12 Post by yazza54 » Wed Nov 18, 2015 8:04 am

I need to weigh it but I can tell you it's bloody light

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Questo vecchio rz
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Re: 443 Mito

#13 Post by Questo vecchio rz » Wed Nov 18, 2015 8:08 pm

yazza54 wrote:Thanks :) worth saying as well for anyone considering a long stroke motor - my crank is one of Roger's at wicked, all uprated bearings etc. The motor is very smooth. Surprisingly so for a big twin. I've read some people having vibration issues but I'm very impressed.
Is that a Billet lightweight crank, or Wickeds standard upgraded crank?
Regarding Rogers Billet head, did you leave it as bought with interchangable domes and what CCs or did you have it completley reworked, finally did you have alternate porting on the cylinders?
Banshee (Baja) race bike,+ 2 A Arms,L.E.Ds, Toomey, +4 stroker IMS tank, run flats.
96 GSXR SRAD, Future Yoshimura rep.
85 custom Tri-Z
RZ/YZR bike(project)
86 VFR750 RC24 Merkel replica (project)
Royal Enfield Bullet 500

yazza54
Posts: 54
Joined: Fri Feb 07, 2014 8:25 am

Re: 443 Mito

#14 Post by yazza54 » Fri Nov 20, 2015 8:39 am

It's not a billet crank, not really necessary IMO for a fast road bike.. does have all uprated bearings 11 ball & TZ big ends

The head came supplied with 23cc domes all ready to fit I haven't modified them at all, he knew what they were going on and supplied the right parts.

The ports have had very little work, mainly just cleaning the castings up.

yazza54
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Joined: Fri Feb 07, 2014 8:25 am

Re: 443 Mito

#15 Post by yazza54 » Fri Nov 20, 2015 8:55 am

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