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FI International alternative restrictor kits.

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spetom
Trackday Trickster



Joined: 30 Aug 2010
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PostPosted: 13:51 - 14 Oct 2010    Post subject: FI International alternative restrictor kits. Reply with quote
I discovered a number of websites that were offering much cheaper washers and alternative to FI international which we all know is a scam.

Trouble is I can't seem to find them anymore, I was being linked through ebay and google to quite a few sites.

Anyone know of any alternative restrictor sites? Thanks
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c_dug
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PostPosted: 14:01 - 14 Oct 2010    Post subject: Reply with quote
What bike is it for? If somebody on the forum has some then you could get the dimensions and get them made yourself.

Not sure of any other companies that make them though.
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spetom
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PostPosted: 14:19 - 14 Oct 2010    Post subject: Reply with quote
Honda CB 500.
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c_dug
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PostPosted: 14:34 - 14 Oct 2010    Post subject: Reply with quote
https://cgi.ebay.co.uk/Honda-CB500-CB500S-Restrictor-Kit-/180572902302?pt=UK_Motorcycle_Parts&hash=item2a0afbd39e

Voila.
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stinkwheel
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PostPosted: 14:37 - 14 Oct 2010    Post subject: Reply with quote
Honda actually make proper carb rubbers with the restriction built into them for the CB500.

Carb insulator LH: 16221MY5710
Carb insulator RH: 16211MY5710

You also need to fit larger main jets:
Jet #125: 99101GHB1250 (two required)

Contact a Honda dealer, either your local one or David Silvers online shop. Order those part numbers and fit them to make your CB500 33bhp using genuine honda parts designed for the purpose.

Expect to pay around £35 delivered.

Thanks go to Ingah for looking those part numbers up.
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spetom
Trackday Trickster



Joined: 30 Aug 2010
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PostPosted: 15:10 - 14 Oct 2010    Post subject: Reply with quote
stinkwheel wrote:
Honda actually make proper carb rubbers with the restriction built into them for the CB500.

Carb insulator LH: 16221MY5710
Carb insulator RH: 16211MY5710

You also need to fit larger main jets:
Jet #125: 99101GHB1250 (two required)

Contact a Honda dealer, either your local one or David Silvers online shop. Order those part numbers and fit them to make your CB500 33bhp using genuine honda parts designed for the purpose.

Expect to pay around £35 delivered.

Thanks go to Ingah for looking those part numbers up.


I was reading on another site that Honda don't do it anymore? Question
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 15:17 - 14 Oct 2010    Post subject: Reply with quote
Hi

Still listed on the David Silver spares site (although the main jets have changed part number now). £3.93 each for the main jets and £7.52 each for the inlets (all prices plus vat).

All the best

Keith
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spetom
Trackday Trickster



Joined: 30 Aug 2010
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PostPosted: 15:25 - 14 Oct 2010    Post subject: Reply with quote
Kickstart wrote:
Hi

Still listed on the David Silver spares site (although the main jets have changed part number now). £3.93 each for the main jets and £7.52 each for the inlets (all prices plus vat).

All the best

Keith


??

My e-mail to davidsilverspares reads

Quote:

Hi,
Do you happen to have a restrictor kit for a Honda CB500?

Thanks

Regards


The reply from davidsilverspares is:

Quote:
We do not sell restrictor kits here...sorry.
Regards
Mark


Could you give me the part numbers on their site? They claim they don't have them.
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spetom
Trackday Trickster



Joined: 30 Aug 2010
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PostPosted: 15:31 - 14 Oct 2010    Post subject: Reply with quote
I presume the image below is what I'm after? (These are ones I found off ebay)

Last edited by spetom on 15:32 - 14 Oct 2010; edited 1 time in total
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 15:32 - 14 Oct 2010    Post subject: Reply with quote
Hi

Part numbers are the ones Stinkwheel listed above.

All the best

Keith
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c_dug
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PostPosted: 15:34 - 14 Oct 2010    Post subject: Reply with quote
spetom wrote:
I presume the image below is what I'm after? (These are ones I found off ebay)


c_dug wrote:
https://cgi.ebay.co.uk/Honda-CB500-CB500S-Restrictor-Kit-/180572902302?pt=UK_Motorcycle_Parts&hash=item2a0afbd39e

Voila.



Confused

You're welcome
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spetom
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Joined: 30 Aug 2010
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PostPosted: 15:37 - 14 Oct 2010    Post subject: Reply with quote
Kickstart wrote:
Hi

Part numbers are the ones Stinkwheel listed above.

All the best

Keith


I take it that's not an official kit but a home manufactured one from the Honda parts?
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 15:39 - 14 Oct 2010    Post subject: Reply with quote
Hi

No, as best I understand it that is the official parts Honda supply to restrict the bike to 33hp. Just you order them by part number rather than as some packaged up kit.

If you are worried pop into your local Honda dealer and ask them.

All the best

Keith
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stinkwheel
Bovine Proctologist



Joined: 12 Jul 2004
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PostPosted: 16:00 - 14 Oct 2010    Post subject: Reply with quote
Yeah. Order them by part number.

They probably originally came as a massively overpriced "kit" from Honda. Ordering the parts by themselves as part numbers can often work out cheaper.

I found this with clutch plates for my VFR. Ordering the individual plates and springs by part number was cheaper than buying a clutch rebuild kit (and WAY cheaper than an EBC kit). All came in individual little bags.

Motorcycle dealers are some of the most humpty, unhelpful sods imagineable when it comes to ordering you parts, especially for older bikes. They will just tell you you can't get them because they are to lazy/disinterested in your custom to check the parts fische and plug in the number. If they twig you are after a restrictor kit, they'll get even more humpty because they'll want to sell you an FI one at £100+.

Go in with three part numbers on a bit of paper, all they have to do is type them in.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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spetom
Trackday Trickster



Joined: 30 Aug 2010
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PostPosted: 16:52 - 14 Oct 2010    Post subject: Reply with quote
stinkwheel wrote:
Yeah. Order them by part number.

They probably originally came as a massively overpriced "kit" from Honda. Ordering the parts by themselves as part numbers can often work out cheaper.

I found this with clutch plates for my VFR. Ordering the individual plates and springs by part number was cheaper than buying a clutch rebuild kit (and WAY cheaper than an EBC kit). All came in individual little bags.

Motorcycle dealers are some of the most humpty, unhelpful sods imagineable when it comes to ordering you parts, especially for older bikes. They will just tell you you can't get them because they are to lazy/disinterested in your custom to check the parts fische and plug in the number. If they twig you are after a restrictor kit, they'll get even more humpty because they'll want to sell you an FI one at £100+.

Go in with three part numbers on a bit of paper, all they have to do is type them in.


This is really good knowledge, appreciated. I'm afraid I'm a little late though, already paid £45 for the complete restrictor kit off ebay.

Anyway I know now for the future.

Seems silly that these guys are lazy/disinterested, Christ I would have thought they wanted to move the old stock? I would fire them all if I was the owner and caught them.
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spetom
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PostPosted: 17:51 - 14 Oct 2010    Post subject: Reply with quote
Apologise if this has been discussed ad nauseum on other threads.

Is it difficult to mount your own restrictors and what happens if the insurance company demand some certification for the restriction?
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Nexus Icon
World Chat Champion



Joined: 26 Aug 2010
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PostPosted: 18:02 - 14 Oct 2010    Post subject: Reply with quote
spetom wrote:
Apologise if this has been discussed ad nauseum on other threads.

Is it difficult to mount your own restrictors and what happens if the insurance company demand some certification for the restriction?


Difficulty depends on your competence really. I'll let you be the judge of that but it seems a pretty simple job.

For the insurance company, they'll either demand an FI certificate (in which case change insurers to one of the many that don't) or a dynograph print out. Some may ask for an engineer's certificate, which any local garage could sort for a few quid, but many won't ask for anything.
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Willson
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PostPosted: 18:23 - 14 Oct 2010    Post subject: Reply with quote
stinkwheel wrote:

Motorcycle dealers are some of the most humpty, unhelpful sods imagineable.


+1!

Unless of course you have a big wad of cash in your hands.
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stinkwheel
Bovine Proctologist



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PostPosted: 23:56 - 14 Oct 2010    Post subject: Reply with quote
spetom wrote:


This is really good knowledge, appreciated. I'm afraid I'm a little late though, already paid £45 for the complete restrictor kit off ebay.


Just a word of caution.

Both Honda and FI international change the standard main jets to larger #125 ones when they restrict a CB500 bike to 33bhp by narrowing the inlet manifold. I can't see them doing this for no reason, presumably the bike runs a bit lean when flat out with restrictor washers in on standard jets.

I notice that ebay kit makes no mention of changing the jets. One has to ask oneself why they don't when Honda do.

I did my own restriction certificate and signed it myself. The way I see it, I'm just as qualified to do so as most of the partially trained fitting monkeys that seem to pass for motorcycle mechanics in the UK these days.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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spetom
Trackday Trickster



Joined: 30 Aug 2010
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PostPosted: 09:36 - 16 Oct 2010    Post subject: Reply with quote
stinkwheel wrote:
spetom wrote:


This is really good knowledge, appreciated. I'm afraid I'm a little late though, already paid £45 for the complete restrictor kit off ebay.


Just a word of caution.

Both Honda and FI international change the standard main jets to larger #125 ones when they restrict a CB500 bike to 33bhp by narrowing the inlet manifold. I can't see them doing this for no reason, presumably the bike runs a bit lean when flat out with restrictor washers in on standard jets.

I notice that ebay kit makes no mention of changing the jets. One has to ask oneself why they don't when Honda do.

I did my own restriction certificate and signed it myself. The way I see it, I'm just as qualified to do so as most of the partially trained fitting monkeys that seem to pass for motorcycle mechanics in the UK these days.


They just arrived in the post.

If I fitted the one I just bought assuming it's wrong, how would that affect the bike? Running lean isn't too much of a problem for me as you know I love efficiency and economy.
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ms51ves3
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PostPosted: 09:38 - 16 Oct 2010    Post subject: Reply with quote
spetom wrote:
Running lean isn't too much of a problem for me as you know I love efficiency and economy.


It won't be more economical if it's running lean.
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spetom
Trackday Trickster



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PostPosted: 10:22 - 16 Oct 2010    Post subject: Reply with quote
ms51ves3 wrote:
spetom wrote:
Running lean isn't too much of a problem for me as you know I love efficiency and economy.


It won't be more economical if it's running lean.


Hmm, I'm going to open up the package and see what arrived. I was hoping to sort this myself, got Haynes as well now. Last resort will have to go and see the local mechanic.
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 17:59 - 17 Oct 2010    Post subject: Reply with quote
spetom wrote:
Running lean isn't too much of a problem for me as you know I love efficiency and economy.


An engine seizing or burning a hole in a piston on full throttle isn't particularly efficient or economical.

All the best

Keith
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spetom
Trackday Trickster



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PostPosted: 22:10 - 17 Oct 2010    Post subject: Reply with quote
Kickstart wrote:
spetom wrote:
Running lean isn't too much of a problem for me as you know I love efficiency and economy.


An engine seizing or burning a hole in a piston on full throttle isn't particularly efficient or economical.

All the best

Keith


So what do I do exactly to sort this out? I'm no tool with a spanner when it comes to other mechanics, but I'm not at all experience with motorcycle mechanics.
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Kickstart
The Oracle



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PostPosted: 22:19 - 17 Oct 2010    Post subject: Reply with quote
Hi

Order and fit the main jets. Should be pretty easy to do so. Whip the carbs off (which you will be doing anyway to fit the new inlet rubbers), take off the float bowls and you should find the main jets.

All the best

Keith
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