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Suzuki GT 750 restriction Kit.

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ovy4213
L Plate Warrior



Joined: 09 Jan 2011
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PostPosted: 21:50 - 09 Jan 2011    Post subject: Suzuki GT 750 restriction Kit. Reply with quote
Hey, basically im looking at buying and restoring a lovely Suzuki GT750, but im still on my restricted licence.
I want to restrict it without having to pay a few hundred £ to get a kit, loads of people have told me not to worry about having one etc, but when someone taken me off my last bike at 50mph and totalled it the police done a check on it as it was a 1987 kawasaki GPX 400r, I only was able to claim off insurance and not get done as I had restricted it myself and kept it restricted.
Does anybody know the easiest way to restrict the suzuki as its engine is allot bigger and powerful than the 400 i restricted, and any dimensions I may need for washers etc.
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ovy4213
L Plate Warrior



Joined: 09 Jan 2011
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PostPosted: 22:15 - 09 Jan 2011    Post subject: Reply with quote
Quote:
Are you stinking rich? You'll need to be if you want to play with Kettles. They are up there with the Z1, CB750 and big kawa triples as the ultimate Jap classic, with a price tag to match.

Also while anything can be restricted, there won't be a kit available so you'd have to develop your own method of keeping it to 33 bhp from the 60 odd they make. Knowing how much 2T's like artificial restriction and how heavy the Kettle is, the end result won't be much fun


haha no just smart, buy and sell simple motorbikes and it makes the money, made £350 proffit on a 50cc yamaha aerox a week back for just 2 weeks work on it in spair time.
and a £600 proffit on a Honda cub 50.
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 22:24 - 09 Jan 2011    Post subject: Reply with quote
Hi

I would doubt anyone makes a kit. However with slide carbs it would probably be easiest to just limit the travel of the slides (possibly a short piece of fuel pipe over the end of the throttle cable under the carb top and above the slide). Would take a bit of time on a dyno to get it right.

All the best

Keith
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ovy4213
L Plate Warrior



Joined: 09 Jan 2011
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PostPosted: 22:46 - 09 Jan 2011    Post subject: Reply with quote
Quote:
RAP Superbikes have a couple of decent Kettles in at the moment. 5K and 6K each respectivley. Trading a few small bikes will not get you a decent Kettle.

Quote:
theres a bit of a difference between an aerox and a cub 50 and a kettle.

you wont make back the money it costs you to restore one.


I have traded allot of bikes not just small ones, and im not after a decent kettle I want a wreck to restore over about 6 months.
And yeas I am fully aware there is a big difference between aerox and cub 50 and a kettle, but the point I was making was I restore little easy ones and sell them quickly to make money, I also restore bigger older versions over a longer period and use them as show bikes and classic bike shows(last one was in Kelso scotland)
I am currently working on a Indian Chief which I bought along with 3 other friend. and I dont intend to make profit on the kettle, I intend to keep it.
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ovy4213
L Plate Warrior



Joined: 09 Jan 2011
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PostPosted: 22:47 - 09 Jan 2011    Post subject: Reply with quote
Quote:
RAP Superbikes have a couple of decent Kettles in at the moment. 5K and 6K each respectivley. Trading a few small bikes will not get you a decent Kettle.

Quote:
theres a bit of a difference between an aerox and a cub 50 and a kettle.

you wont make back the money it costs you to restore one.


I have traded allot of bikes not just small ones, and im not after a decent kettle I want a wreck to restore over about 6 months.
And yeas I am fully aware there is a big difference between aerox and cub 50 and a kettle, but the point I was making was I restore little easy ones and sell them quickly to make money, I also restore bigger older versions over a longer period and use them as show bikes and classic bike shows(last one was in Kelso scotland)
I am currently working on a Indian Chief which I bought along with 3 other friend. and I dont intend to make profit on the kettle, I intend to keep it.
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greetingsfrom...
Borekit Bruiser



Joined: 29 Dec 2010
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PostPosted: 22:48 - 09 Jan 2011    Post subject: Reply with quote
Restricting a GT750 in any way will more than likely result in regularly fouled up plugs and increased carbon build up in the combustion chambers

Get your full license and then enjoy

I've got a kettle engine in the garage, keep meaning to build into a modern sports bike rolling chassis then have it tuned to grenade spec for shits and giggles
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ovy4213
L Plate Warrior



Joined: 09 Jan 2011
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PostPosted: 22:54 - 09 Jan 2011    Post subject: Reply with quote
Quote:
Restricting a GT750 in any way will more than likely result in regularly fouled up plugs and increased carbon build up in the combustion chambers

Perhaps dropping the carb pins a bit and using a larger ignition coil to give a stronger spark could help reduce this?
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greetingsfrom...
Borekit Bruiser



Joined: 29 Dec 2010
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PostPosted: 23:09 - 09 Jan 2011    Post subject: Reply with quote
ovy4213 wrote:
Quote:
Restricting a GT750 in any way will more than likely result in regularly fouled up plugs and increased carbon build up in the combustion chambers

Perhaps dropping the carb pins a bit and using a larger ignition coil to give a stronger spark could help reduce this?


I wouldn't think so, restricting the amount the throttle can open WILL result in the above as the bike will not be able to rev out, and due to the nature to 2 stroke lubrication this is a certainty

Putting restrictors in the inlet tracts will do all sorts of nasty things to the combined fuel/2 stroke oil flow - wouldn't be surprised if the heavier oil would fall out of suspension this leading to a seizure eventually

Seriously - just do your full license and enjoy
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Robby
Dirty Old Man



Joined: 16 May 2002
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PostPosted: 23:15 - 09 Jan 2011    Post subject: Reply with quote
If you're buying a basket case to restore, don't worry about restricting it. Restriction period is only 2 years, you won't have it restored in that time.
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ovy4213
L Plate Warrior



Joined: 09 Jan 2011
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PostPosted: 23:35 - 09 Jan 2011    Post subject: Reply with quote
Quote:
Sorry, you lack the spannering knowledge to own and run a Kettle. The above statement tells me all I need to know.

Incorrect.
A) I have been around bikes all my life as my dad restores classics for a living.
B) I have a 1st Class Btech in both motor engineering and classic vehicle care.
C) I have already arranged the sale and sent the money, so I do in fact own a Kettle.
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evoboy
World Chat Champion



Joined: 20 Aug 2009
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PostPosted: 23:42 - 09 Jan 2011    Post subject: Reply with quote
ovy4213 wrote:

Incorrect.
A) I have been around bikes all my life as my dad restores classics for a living.
B) I have a 1st Class Btech in both motor engineering and classic vehicle care.
C) I have already arranged the sale and sent the money, so I do in fact own a Kettle.


Correct.

If you have a Btech in those subjects, yet seem to think bolting a 'stronger' coil and a dropping the carb 'pins' ( guess you mean needles ) is gonna stop it fouling up when restricted, yet still run fine, your wrong. I have no 'education' in vehicle mechanics, yet still appear to know more than yourself.

Restoring the bike is fine, good, great infact!

Restricting such a bike is sacrelidge.
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0l0dom0l0
World Chat Champion



Joined: 21 Oct 2009
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PostPosted: 23:48 - 09 Jan 2011    Post subject: Reply with quote
Have you thought about a Kawasaki KH 400 instead?

They are very similar bikes, just the KH 400 wouldn't need to be restricted.

By restricting the GT 750 you could cause problems with plugs and exhausts fouling as you can't open it up fully to blast it all out. They need a good thrashing once in a while!

You can pick up a KH400 for alot less too, and they are cheap as chips on insurance. I got a quote for £130 fully comp and I'm 17!!
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ovy4213
L Plate Warrior



Joined: 09 Jan 2011
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PostPosted: 23:50 - 09 Jan 2011    Post subject: Reply with quote
Quote:
If you have a Btech in those subjects, yet seem to think bolting a 'stronger' coil and a dropping the carb 'pins' ( guess you mean needles ) is gonna stop it fouling up when restricted, yet still run fine, your wrong. I have no 'education' in vehicle mechanics, yet still appear to know more than yourself.

Restoring the bike is fine, good, great infact!

Restricting such a bike is sacrelidge.


Education can only teach you so much, its the hands on experience which pays off, and if I followed peoples advice of "dont buy a Kettle" then I will never get the hands on experience of working with it.
I never said the idea would stop it from fouling up, merely reduce it, thats what I did with the Kawasaki 400 and It worked a treat untill the accident.
And I dont want to restrict the bike, but untill my licence is unrestricted (just over a year) I want to be able to take the Kettle out, take her to the local bike show in around 7 months etc, and I can only legally do that restricted.
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ovy4213
L Plate Warrior



Joined: 09 Jan 2011
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PostPosted: 00:05 - 10 Jan 2011    Post subject: Reply with quote
Quote:
there's 2 possibilities.

1. your very rich and have bought a road worthy kettle.

2. you've bought a shed of a kettle, you wont have it road worthy in 7 months, unless you've got lots of free time / money.

i'd be more bothered about getting it sorted than worrying about restricting it.


Its half way between, it was a restoration project for a friend who has had the frame sand blasted and resprayed, bought all the parts which were missing except the chain and headlight, and oil cleaned the engine components, then his personal circumstances changed meaning he needed money and space so I bought it for a reduced price.
I just have to sort out the pannels, re-assemble the engine, ballance the carbs, fit the new loom, and have parts chromed and seat re-appolstered.
Im currently at uni and have 2 months off till I start work again, so untill then all I have is free time.
Hoping to get it finished in under 6 months.
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evoboy
World Chat Champion



Joined: 20 Aug 2009
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PostPosted: 01:21 - 10 Jan 2011    Post subject: Reply with quote
ovy4213 wrote:

I never said the idea would stop it from fouling up, merely reduce it, thats what I did with the Kawasaki 400 and It worked a treat untill the accident.


The Kettle is not a 4stroke engine....

Do you understand how the 2stroke engine works? How much more picky they are to adjustments and alterations?

Youll struggle to get the bike down to 33bhp and have it run properly.

To +1 Bluey and to put it into perspective for you.. My Suzuki GT250 x7 makes some 35bhp with modifications aimed towards performance and thats a 250cc 2cyl 2stroke.

Your looking at getting a 750cc 3cyl 2stroke making some 70bhp (at a guess) down to the power of a 250cc. It will run like arse, to put it bluntly.
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Shaft
World Chat Champion



Joined: 27 Dec 2010
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PostPosted: 01:55 - 10 Jan 2011    Post subject: Reply with quote
I say good luck to the boy, he wants to learn, so let him learn the hard way.

It will be a shame to screw up such a good bike, but hey, it's not our money and time.
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Pete.
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Joined: 22 Aug 2006
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PostPosted: 07:02 - 10 Jan 2011    Post subject: Reply with quote
You should be able to restrict it in the way Kickstart said, by restricting the slide lift. There must be plenty of original examples about ridden by old duffers who never open the throttle enough to crack 33hp. Just carry spare plugs.
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woodyfjr
Scooby Slapper



Joined: 25 Jan 2006
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PostPosted: 09:21 - 10 Jan 2011    Post subject: Reply with quote
Just put it back to original spec and watch the money roll in. Restricting a bike like that is sacrilegious even though I'd prefer a H2.
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