Bike derestricting problems... (with pics)

[JonB]

Hello,

Well what started off to be a simple getting rid of the baffle in my exhaust (of which I couldn't do after 3 drill bits were snapped and it is proving to be difficult) me and my Dad thought we would have a go at derestricting the bike, so we took the tank off, which incidentally was very easy, I have no knowledge of bike mechanics at all, but fortunately Dad has a little bit of knowledge, so we got the tank off, well partially...

https://img.photobucket.com/albums/v93/JonBod/2006_0425005800.jpg

So with that we took off the carb headers and pulled the vacuums out, this was easy enough...

https://img.photobucket.com/albums/v93/JonBod/2006_0425001800.jpg

But we for the life of us can't tell the difference between the derestricted one and the normal one...

Can you?

https://img.photobucket.com/albums/v93/JonBod/2006_0425002800.jpg

The one on the right is the "restricted one"
Initally I thought the green piece in the next bit would be the restrictor cause it went the whole way down and seemed to block off that hole in the middle...

https://img.photobucket.com/albums/v93/JonBod/2006_0425003800.jpg

However without it the springy thing won't stay on it, god knows what it is there for though!

https://img.photobucket.com/albums/v93/JonBod/2006_0425004800.jpg

So my question is, if anybody else owns a Bandit and had a Suzuki Restrictor kit, this is not an FI Kit AFAIK, how the hell is it restricted? Does the carb headers look different to you? Am I missing something completely? Would it be washer restricted?

Thanks, Jon.
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[Jack_Cheese]

Take the carbs off, and there should be washers between the carb and the engine block i think. At least that's the way i've always understood it.

By the way, fuel injected bikes don't have carbs, so you're certainly right about it not being EFI
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[JonB]

I mean FI International, the company that restricts most bikes. This is a Suzuki Restrictor kit.
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Be careful whose advice you buy, but, be patient with those who supply it. Advice is a form of nostalgia, dispensing it is a way of fishing the past from the disposal, wiping it off, painting over the ugly parts and recycling it for more than it?s worth.

[cagiva gezzer]

Thought i'd be clear that it's the green bit preventing the slide / diaphragm from opening fully. Hence, you'd only get X% of the total opening.
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"because one stroke isnt enough and four strokes waste two"

[JonB]

[Rookie]

I know this isn't at all helpful, but here's hoping you'll be derestricted for the May Day run now!

[cagiva gezzer]

[phantomtek]

Don't know if it's any help but this is how the ER-5 is restricted, I seem to remember dodsi giving away washers for his Bandit so you may want to check here.

[JonB]

[cagiva gezzer]

https://www.nightrider.com/biketech/images/cv_carb_cutaway.jpg

Normal carb above. CV carb if you're picky.

How it works -

The butterfly (10) opens and allows air in.

Differences in air pressure in areas (1) & (2) causes the diaphragm (3) to rise. The spring fights this rise. As the diaphragm rises it allows more fuel in.

= more power and revs.

Attached is your restricted carb. The green spacer prevents the diaphragm from going to the top. Prevents the needle from allowing fuel to flow. Same as only wonding the throttle back 75%.

From experience, it's when people play with things and don't put all the things back in that gives rise to other issues.

So, keep spring, junk green parts. You might have something between the carbs and the head, but i very much dobt it.
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"because one stroke isnt enough and four strokes waste two"

[JonB]

Sorry for my post earlier and sorry for pestering you, but the green thing made sure that the spring didn't "fall" over as it clipped over the green thingy. So will it just stay upright on it's own accord, or do I need new springs or something.
____________________
Be careful whose advice you buy, but, be patient with those who supply it. Advice is a form of nostalgia, dispensing it is a way of fishing the past from the disposal, wiping it off, painting over the ugly parts and recycling it for more than it?s worth.

[phantomtek]

[NSR Mick]

Have a look down the carbs and see if you can push the slides all the way up, otherwise i think your green friends may have something to do with it as every bike I've had the springs are a bitch to get to go in without springing out.
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If you dont like the way that I ride.......Stop trying to keep up!!!

[cagiva gezzer]

Closest i can find

I say slap it all back in. The springs shouldn't "fall over" as they should sit square.
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"because one stroke isnt enough and four strokes waste two"

[DynaMight]

I've only had experience with washer only type restrictions myself, different bikes have different restrictions but I found this:

https://www.loply.com/szr660/derestrict


Also check under the carbs, you may possibly have washers under them too (I've heard of R6's having both)
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[Reevo8]

About time too Jon. You guys sound like experts in comparison to me, I just take stuff of put it back on, god knows what the names of things are.

Good luck with sorting it though mate.

And just looking at the shape of the top of the 'carb headers' it looks to me that as on my other bikes it has a shape in the top to support the spring and leave it 'tensioned'(I think I made that word up ).

So whip the green fellas out and put the springs into place using the shaping in the carb header caps to hold the springs in place. That is how all of my bikes have been put together I think. Give that a go link it up and see if it will rev to the redline.

Probs best to try and whip the carbs off first and see if they have the washers in there too before you put it all back together. Likely it doesnt have them though due to the prices of the Suzuki kits.

Give it a try Jon.

Hope it works mate.
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05 ZX10R, (**05 WKR)

[Dot_Comm]

PM Kara. She just derestricted her bandit (she sent me the washers but they got lost in the post ) so she might be able to offer you some advice.

Edit: oh hang on, hers was an FI International kit so perhaps she can't help. But try it anyway.

Rach

[JonB]

Thanks for the help guys, I suspect that it is those green things, but I will go into the Suzuki Dealership today just to check...
____________________
Be careful whose advice you buy, but, be patient with those who supply it. Advice is a form of nostalgia, dispensing it is a way of fishing the past from the disposal, wiping it off, painting over the ugly parts and recycling it for more than it?s worth.

[DynaMight]

[Walker]

I don't know whether this is the same at all, but the (FI) restrictors on my K3 Bandit were between the carbs and the engine block, I had to pull the carbs away from the airbox and then from the engine block and lever the restrictors out with a screwdriver. Just be careful though, i had about as much mechanical knowledge as you and didnt quite put my carbs back on properly...

Having the restrictors out completely transforms the bike, with a massive kick of acceleration from 8,000-10,500 revs. No more struggling to get to 90! Its such a laugh with them out, youll never understand why you had them in in the first place

[Reevo8]

When you get a Suzuki restrictor kit they give you the bits you need to replace so he knows it isnt washers alone if at all.

Then yellow marked lids in this piccy will hold the springs in placejust take the green bit out and check for the carb washers. Are wasting ya time going dealers IMO.
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05 ZX10R, (**05 WKR)

[JGY6000]

i got mine off a mate, the packets they came in suggest they were from suzuki, i fitted them exactly as the original carb sliders were fitted and when i looked the only diff i could see was the two holes, hope this helps

https://www.bikechatforums.com/download.php?id=33061