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+--- Thread: Power Restriction: Carbs (A2 Licence) (/showthread.php?tid=76802)
Power Restriction: Carbs (A2 Licence) - fazerfan - 16-10-16
Now for something different friends (=I can't yet find it on topic search).
I've purchased a FZS600 (2000) that has 'Plates fitted restricting the diameter of the inlet manifolds' last year as the previous owner then had an A2 licence.
I have found this quite useful so far as I am first giving the machine a thorough service, tyres, chain and sprockets etc; but would want to remove the restriction at some time.
Either way, I'm generally interested in the topic (and of course realise that less suck = less bang = less power at the wheel) and wondered if anyone else has had these installed (I have the certificate) and has anyone removed them themselves. If so, can the plates be removed without removing the carbs completely.
(I have noted that the person who did this work refitted the tank mounting bracket and spacer rubber incorrectly. I wonder what else might be wrong.)
[/size]
[/size]Thanks.
Re: Power Restriction: Carbs (A2 Licence) - misterjayb1 - 16-10-16
Can you legally A2 restrict an FZS?.. I know it is a grey area with original power output figures
Re: Power Restriction: Carbs (A2 Licence) - fazerfan - 16-10-16
Must be, Yes!
The 'quote' is from the Certificate of Motorcycle Restriction I have in hand. Cert' No. Dated and registered.
Re: Power Restriction: Carbs (A2 Licence) - darrsi - 16-10-16
(16-10-16, 04:25 PM)misterjayb1 link Wrote: Can you legally A2 restrict an FZS?.. I know it is a grey area with original power output figures
You can restrict any bike legally, as long as your age doesn't catch you out.
Just gets all the more embarrassing the bigger the engine though.
Re: Power Restriction: Carbs (A2 Licence) - His Dudeness - 16-10-16
The restrictor washers are on the engine side of the carbs so you have to pop the carbs off to get to them.
Re: Power Restriction: Carbs (A2 Licence) - misterjayb1 - 16-10-16
I was under the impression that A2 bikes were to be no more than 47bhp, or if restricting a full power bike it shouldnt have been more than double that figure originally.. ie 94bhp.. Arent fzs's pumping out a little more than that?.. Theres also a minefield of power to weight ratio to contend with. I know lots prob remove the kit 10 mins after its fitted and fair play to 'em if thats ya bag.. Yes I get the point that this all has to be proved and also only if you get caught
Re: Power Restriction: Carbs (A2 Licence) - darrsi - 16-10-16
I stand corrected, and i now also remember a discussion about it on here before.
As you say it is meant for bikes with no more than 95bhp in its original state, which does kind of leave the 600's open to a 1bhp problem if someone was going to be pedantic about it.
Actually finding one that reaches 95bhp these days is another issue completely though, so it's kind of a grey area.
Plenty of people have had them restricted so i don't really know how the law stands to be honest?
Re: Power Restriction: Carbs (A2 Licence) - darrsi - 17-10-16
Here's your answer, and probably worth printing off a copy if your own bike is restricted. :thumbup
http://www.bikechatforums.com/viewtopic.php?t=289785
Re: Power Restriction: Carbs (A2 Licence) - misterjayb1 - 17-10-16
Thanks Darrsi.. I just remember a while back everyone being confused over which bike ya could n couldnt restrict. I wondered if anything had become clearer or maybe less strict over time.. The only bike Iv ever had that was restricted was my 50cc back in '82
Re: Power Restriction: Carbs (A2 Licence) - BBROWN1664 - 17-10-16
Under the "old" rules, you could restrict an FZS600 (or anything else for that matter) to 33bhp. A couple of years ago when they introduced the additional tests, they changed this to 47BHP for the A2 and the restriction can only be made on something with less than 94bhp making the FZS unusable on a restricted licence.
My guess is, the kit fitted to this bike is the old restrictor kits and consists of washers in the intake manifold on most kits.
Re: Power Restriction: Carbs (A2 Licence) - darrsi - 17-10-16
(17-10-16, 08:31 AM)BBROWN1664 link Wrote: Under the "old" rules, you could restrict an FZS600 (or anything else for that matter) to 33bhp. A couple of years ago when they introduced the additional tests, they changed this to 47BHP for the A2 and the restriction can only be made on something with less than 94bhp making the FZS unusable on a restricted licence.
My guess is, the kit fitted to this bike is the old restrictor kits and consists of washers in the intake manifold on most kits.
I thought you could, 'cos I remember reading about someone a couple of years ago who'd restricted an R1 (as you do) to 33bhp, hence the reason why I mentioned the embarrassing part with the bigger engines.
Re: Power Restriction: Carbs (A2 Licence) - BBROWN1664 - 17-10-16
http://www.bikelicence.co.uk/
Anyone that took their test on a 125 prior to 19th January 2013 could ride an FZS600 ( or other bike) with a 33bhp restrictor kit fitted for two years. As anyone passing their test before this date would have had their licence over two years now, all restrictions are removed automatically on their licence and they can now ride anything.
Anyone passing since then however has no use for a 33bhp FZS600 as it does not meet the licence requirements for anyone other than a full "A" licence. If you had that licence though, why would you restrict a 95bhp bike down to about 1/3 of the power?
Re: Power Restriction: Carbs (A2 Licence) - unfazed - 17-10-16
(16-10-16, 04:25 PM)misterjayb1 link Wrote: Can you legally A2 restrict an FZS?.. I know it is a grey area with original power output figures
The Fazer600 from 1998 to 2003 was quoted as 95ps not 95hp [img alt=:eek]http://foc-u.co.uk/Smileys/efocicon/shocked.gif[/img]
Metric horse power is less than UK hp and 95ps is just less than 94hp and just less than 70kw which puts it just inside the limit. [img alt=:thumbup]http://foc-u.co.uk/Smileys/efocicon/thumbup.gif[/img]
Re: Power Restriction: Carbs (A2 Licence) - misterjayb1 - 17-10-16
I never knew there was metric horsepower :\ .. So in effect it could be a 33bhp restricted fzs?.. Wow I thought 47bhp was bad enough
Re: Power Restriction: Carbs (A2 Licence) - unfazed - 17-10-16
(17-10-16, 09:50 PM)misterjayb1 link Wrote: I never knew there was metric horsepower :\ .. So in effect it could be a 33bhp restricted fzs?.. Wow I thought 47bhp was bad enough
The original Yamaha catalogue listed the Fzs600 as 69.9Kw and the Fzs1000 as105.2Kw
If it goes to 80mph and crawls to 90mph it is 33hp restricted :'(
It it goes to 100mph and crawls to 110 mph it is 47hp restricted
It it goes to 130mph and slowly to 140 mph it has no restriction :lol
Re: Power Restriction: Carbs (A2 Licence) - fazerfan - 18-10-16
Thanks for the interest guys. I'll remove the carbs during the 'restoration' work and perhaps post photos on here of the restrictor plates.
The certificate shows the work was carried out by Bike-Depot Worksop July 2015 with copy returned to Kickstart Engineering (35kW), Gedling, Nottingham.
Thanks again....
Re: Power Restriction: Carbs (A2 Licence) - fazerfan - 18-10-16
! No longer available
Someone opening a kirkstart engineering kit.
Re: Power Restriction: Carbs (A2 Licence) - fazerfan - 18-10-16
http://www.ebay.co.uk/itm/Yamaha-FZS-600-98-03-Restrictor-Kit-35kW-46-46-6-46-9-47-bhp-DVSA-RSA-Approved-/221515122399?hash=item33935486df:g:gn0AAOSwPe1UE0b9
and the ebay link to the fazer 600 kit......