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H100S2 Project......20bhp tune up!

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cb1rocket
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Joined: 30 Jan 2010
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PostPosted: 01:37 - 12 Jul 2013    Post subject: Reply with quote
Some interesting mods there. What power are these bikes producing? They look only to be mildly tuned
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Vincent_Ramen
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Joined: 08 Mar 2013
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PostPosted: 13:38 - 12 Jul 2013    Post subject: Reply with quote
cb1rocket wrote:
Some interesting mods there. What power are these bikes producing? They look only to be mildly tuned



As it is expensive to get those kits here (Parma/Athena), most of these bikes are bored so as they can accommodate larger piston (DT 125). Some of them (like mine) uses bigger carbs (Delorto 28, Kehnin 28/32/34), some porting works also. No dyno run though because there's no such infrastructures here sadly.
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cb1rocket
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PostPosted: 21:50 - 01 Nov 2013    Post subject: Reply with quote
Well I haven't updated this in a while!

Been busy messing around with the tuned 20bhp H100S2. Some of you will know I had problems, but so far its just about running spot on!

Anyway next job, seat pan restoration!

(sigh........!)

Gone for shot blasting let see whats left of it! Then oxy-acetylene in some bits of new scrap!

https://i212.photobucket.com/albums/cc108/CB1Rocket/20131029_134220_zps1afbc5dd.jpg
https://i212.photobucket.com/albums/cc108/CB1Rocket/20131029_134208_zpsf8e3e80a.jpg
https://i212.photobucket.com/albums/cc108/CB1Rocket/20131029_134107_zps4414232b.jpg
https://i212.photobucket.com/albums/cc108/CB1Rocket/20131029_134056_zps3a030fdf.jpg
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Welshd1k
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PostPosted: 17:46 - 02 Nov 2013    Post subject: Reply with quote
I want to do stuff like this with my rxs100 but can't seem to find much like this ... Maby I need to buy a h100 instead !
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Current >Cb600fx hornet, ns125rk90 21.7bhp@wheel<
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bladerunner
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PostPosted: 21:03 - 02 Nov 2013    Post subject: Reply with quote
For starting a project like this I'd have chosen the rxs over the h100 anyday! The rxs shares a fair few ideas with the rd/dt 125lc ie intake port/ reed valve and transfer ports etc.
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's
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bladerunner
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PostPosted: 01:59 - 03 Nov 2013    Post subject: Reply with quote
not to mention ive got an rd 190 big bore sitting here...would bolt onto an RXS motor and add LC with added rad and electric pump......not sure what size conrod you have in the RXS but from memory should be doable!
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's
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cb1rocket
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PostPosted: 21:53 - 04 Nov 2013    Post subject: Reply with quote
Some Aqua Blasting with baking soda

Not bad for a 1st attempt

will finish off nicely once I have a blast cabinet, mum wasn't impressed! Mr. Green

https://i212.photobucket.com/albums/cc108/CB1Rocket/20131104_204811_zps26e16223.jpghttps://i212.photobucket.com/albums/cc108/CB1Rocket/20131104_191540_zpsd1867fc8.jpg
https://i212.photobucket.com/albums/cc108/CB1Rocket/20131104_185144_zps75d23dab.jpg
https://i212.photobucket.com/albums/cc108/CB1Rocket/20131104_204411_zpse0753e1d.jpg
https://i212.photobucket.com/albums/cc108/CB1Rocket/20131104_204447_zps68a6931b.jpg
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bladerunner
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PostPosted: 00:42 - 06 Nov 2013    Post subject: Reply with quote
Blasting results look good enough for me to give it a try! Any tips apart from using a cabinet!?
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cb1rocket
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PostPosted: 00:46 - 06 Nov 2013    Post subject: Reply with quote
bladerunner wrote:
Blasting results look good enough for me to give it a try! Any tips apart from using a cabinet!?


Wear goggles and do it outside. Face mask for those dust but not harmful but not good to breathe in either!

Also reuse the soda and water by doing it in a large storage box or similar and have your suction pipe continuously feed off the bottom of the box
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Hondamatic
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PostPosted: 17:05 - 28 Nov 2013    Post subject: Reply with quote
I am new to this site so first and foremost hello all Very Happy

I have been following this post for a while as I am also currently undergoing my own Honda H100 project. I am going more along the café racer style route but am always up for a little bit of fettling to get a bit more poke out of the little fella Smile

The bike is a 1987 D reg H100 S2 and the only performance mods I was planning was a 16t front sprocket, Performance reed valve, race air filter and removed baffle as the reduced weight on the bike should give me a bit of increased top end speed anyway.

But then I saw the Athena 125cc kit on this post!!!

So CB1, what does this kit do to top end and acceleration and is it worth it for the increased costs & fettling needed? I would be made up if I could get the bike to get to 75 - 80 mph.

I may even park the CBR600RR up a little more........
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ocatoro
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PostPosted: 19:00 - 28 Nov 2013    Post subject: Reply with quote
Hondamatic wrote:
I am new to this site so first and foremost hello all Very Happy

I have been following this post for a while as I am also currently undergoing my own Honda H100 project. I am going more along the café racer style route but am always up for a little bit of fettling to get a bit more poke out of the little fella Smile

The bike is a 1987 D reg H100 S2 and the only performance mods I was planning was a 16t front sprocket, Performance reed valve, race air filter and removed baffle as the reduced weight on the bike should give me a bit of increased top end speed anyway.

But then I saw the Athena 125cc kit on this post!!!

So CB1, what does this kit do to top end and acceleration and is it worth it for the increased costs & fettling needed? I would be made up if I could get the bike to get to 75 - 80 mph.

I may even park the CBR600RR up a little more........


see this thread for top end improvements


https://www.bikechatforums.com/viewtopic.php?t=279813&start=0
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CBT - 17/09/12 * Theory - 23/10/12 * Mod1 - 05/03/13 * Mod2 - 25/03/13 * BOSH!
Current - None Sad but shed project H100 (first bike Smile )
Past - ER5, '93 ZZR600, '92 CB400 SF, ZZR600 (again), yellow Monster 620, Blackbird - black Monster 620ie - '96 ZZR600
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Hondamatic
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PostPosted: 21:48 - 29 Nov 2013    Post subject: Reply with quote
Excellent tips fellas, this may be the route to go for me first of. I will definitely try widening the exhaust port and the upping the main to 130.

I originally went for a 16t front sprocket as I didn't want to lose too much acceleration. I ride a CBR600RR normally so know this thing is going to be pretty slow in comparison to that, I just don't want it to be painfully slow in order to get the top speed up.

I'll be honest though, never even ridden a h100 so don't know what it would be like stock. The one I got was in a really bad state when I got it, having been left in a shed for 15 years.
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