Jawa 640 modification

Ger 350

I recently purchased the “ Tune up for Classic” kit from F2 Motorcycles in the UK for my Jawa 350 2-stroke. The kit includes a new carburetor inlet gasket, replacement performance baffles and full instructions. All for the fairly modest sum of £75 stg. The kit is fairly easy to install. You will need a holesaw, a good hacksaw and a few handtools.

First thing you need to do after you have ripped open the packaging is make a nice cup of tea, relax and read the instructions.

Tea finished if you are lucky enough to own a selection of holesaws and a good hacksaw you can begin.

I first of all cut a hole in the front cover of the air filter housing to let the bike breath better. Next re-position the carb needle up one notch. Mark the position of the downpipes as they enter the silencers. Remove the old baffles from your exhaust. Fit the new ones that are supplied. Cut a little bit off your exhaust downpipes (as per instructions) at the silencer end. Fit everything back together and fire her up.

Noise level increases to 86db, nothing too drastic but it does sound nicer! It is on the road that you really notice the difference in the mid range power band. The bike pulls much cleaner and responds much quicker to the throttle.

I could see no difference to my top speed but bombing along at 77mph is not pleasant for too long on this 350!

I fitted an 18tooth front sprocket(1 tooth up from the standard 17 tooth) and noticed the revs drop which made the engine pull along really sweetly at 60 mph, which is perfect for me.

Would I recommend the kit?


Best £75 you will be likely to spend on your 350!!


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Topend Overhaul

Even with modern good quality 2 stroke oil there comes a time when you have to get down and dirty with the head.

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From the Czech economic weekly "Ekonom", 31 August 2011

Jawa are significantly upgrading their motorcycles. The company wants to concentrate on the production in the Czech Republic of luxury motorcycles. This year they expect to sell about 1500 machines.

Jawa Motorcycle Company will change its product range significantly. The weekly magazine "Ekonom" has learned that in about four years the firm will end the manufacture of all motorcycles with traditional two-stroke engines. It will also cease producing in the Czech Republic all small motorcycles fitted with imported engines with a capacity below 660 cc.

The main model of the brand will be a completely new motorcycle with a four-stroke 1000cc own-design engine, which the company has recently completed developing. It will be the first four-stroke roadster engine manufactured by Jawa in about fifty years.

Three partly-faired machines with one-litre twin-cylinder engines have been tested on the roads. These have been certified for homologation.

"In the Czech Republic in the future we want to produce only luxury and special motorcycles, plus police and military models," says Jiří Gerle, CEO Jihostroj Velešín, the owners of Jawa.

Prototypes of the four-stroke 1000cc Jawa-engined motorcycles reach a maximum speed of about 220 kilometres per hour. The basic price of the new model will exceed 250,000 crowns (€10,000, stg£8,600, US$13,750). The machine will eventually get even more powerful siblings with a volume of 1200cc.

However, the older Jawa models might not disappear entirely. The company is negotiating with manufacturers in Argentina, Russia and India for a possible sale of the license.

Jawa motorcycles with traditional two-stroke engines can now be sold only in countries with less restrictive environmental regulations. The main markets for the company's two-strokes today are Cuba, Argentina and Panama.

"For the whole of this year we are projecting sales of between 1,400 and 1,600 motorcycles. Last year there were about 800 sold", said Gerle.

The company recently started manufacturing and selling four-stroke motorcycles with an engine capacity of 660cc. This machine is designed for the European market. It is the first sign of a new orientation for the Czech motorcycle manufacturer towards the upper end of the market, and this single machine from the current menu is to be the main production model for the next five years. The engine in this case is not from Jawa, it is a product of the Italian company Minarelli.

Ekonom iHned, 31 August 2011

(With acknowledgments to testy motocyklů JAWA the Czech text of this article)


So the Týnec factory's going to concentrate on higher-end motorcycles in the future? No surprise. Consider how few of the European motorcycle manufacturers produce 125s or 250s now, if any. For that matter, think of those Japanese marques selling 125s here in the West. I read a UK-mag review a couple of years ago of a head-to-head comparison between a Honda and a Yamaha 125. As I recall the Yamaha was made in China, the Honda in India. Lower production costs in those countries. Who could afford such machines if they were made in Japan, on Japanese wages?

There's more. Our member Maurice Jensen alerted me the other day to the limited sales of the Jawa Travel 250 in the Czech Republic. It sells poorly, he tells me, because there's a Chinese machine with the very same engine on sale from a company in Prague at half the price. Okay, let's see ... the Jawa Travelka 250 sells in the CR for 59,900 koruna. The Chinese Yuki 250 CSR EVO sells for 49,990 koruna (discount price at the moment, 39,990 koruna). Either way, the saving is not insignificant. And the Yuki's a very good-looking machine, with the same Made-in-China 253FMM engine on board. Why should it be considered inferior to the Jawa unless someone could prove that it was?

And it's not as though Czech wages were as low as they used to be. I've been travelling to the Vysočina every year (South-Central Czech Republic) for a very long time now, and the signs of increased prosperity are more obvious every year. You can't make cheap motorcycles unless you've got a relatively low-wage economy. When you think about it, it's not all that much cheaper to make a 250cc than a 1000. You can't sell a 250 for anywhere near the 1000cc price, though. So then, why not concentrate on the higher capacities?

Let's hope they pull this stunt off better than MZ did. MZ had a really nice machine with a 1000cc twin-cylinder engine `(did Jawa copy or license it?) and it looked like a Skorpion 660 on steroids. Somehow, many owners didn't like it. The engine's EMS mapping wasn't universally popular till it was upgraded a year or two on. And MZ's dealer network seemed inadequate, especially in the UK. A pity, because when it was sorted the MZ 1000S was apparently a very good machine. But it was a day late and a dollar short ...

So, then -- high-end Jawas for the future? Yes, I'd say go for it. And maybe we'd still find the classic two-strokes etc coming in from Russia, Argentina or India if the EU bureaucracy eventually fell apart.

Spider Pat

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Breakfast in Mount Usher Gardens

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Mount Usher Gardens

I am lazy when it comes to organizing. I generally do well go get myself out the door let alone organize a group. But I done just that and pre-booked a table in the Mount Usher gardens for breakfast. Put the word out and waited to see what would happen. Sunday 20th November, with sun shine and a clean bike I went to the Spawell. Pat Gannon, true to his word was waiting for me, (delighted I cleaned my bike now). Kenneth arrived from Carlow next. Already an hour’s drive under his belt. Mere mortals arrive but Gary (Yamaha 1300) made his entrance. Gerry Quigley and Pavel had phoned to let me know they would meet us there, so 9.30 we took to the road. Two of the new 350cc JAWA’s, Gary and the Snail. We took it handy on the way down, Pat having little mileage on the bike plus the snail does slow well. We had two surprises. It got cloudy after Bray and Gerry Quigley was down before us. Martin and Miša (Pippie Longstocking) turned up on the African Twin. Their blue Jawa now being used mainly as house furniture. Pavel the pirate had the 660 Sportard complete with boxes, never know when you might do some Christmas shopping. Peter was on the 250 JAWA VULCAN with Monica his lovely copilot, even more beautiful then the bike.

No time to waste, bikers to be fed, we ordered and got stuck into the variety from the Menu. Food is important you know. There was plenty of choice so every taste catered for we enjoyed a side order of small talk. Gerry showed us the disadvantages of playing with your food. Yet more surprises the cream 350 outfit piloted by Gerry McGinley. What a good turnout. Somehow through all this we put a plan in place for the Christmas Party. The Czech Inn, Temple Bar, Dublin on the 10th December at 8 o’clock.

Even JAWA pilots fill up so we went out to the bikes to get ready for the spin back. It was still damp with low cloud as we passed through the Devils Glen, but after Laragh the sun came out, in fact it was a warm 14 degrees. We took the twisty roads handy, the sky clearing let us enjoy the autumn colors. As we rounded Blessington lakes they were a fantastic shade of blue. I know what you are thinking “ice-cream” yes we thought of it also. We stopped in Hollywood for a cone. Some Polish pilots were very surprised to see a Jawa pull up beside them, but when they just kept arriving, well I think we made them homesick. I had a spin on Pavels 660, the suspension is (as Pavel would say) BRILLIANT. The engine pulls and sounds exactly right. What a machine.

We parted company and headed on our homeward journeys. I feel the day was a great success. Meeting builds up a Club atmosphere. Together we are stronger. Thanks to all till next time.

Mick Doran

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III setkání motocyklů JAWA 500ohc odjezd od moto muzea ve Štěpanicích 28.5.2011

(third meeting owners JAWA 500 ohc during depart from moto museum from Štěpanic).


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I was on my usual yearly trip to the Czech Republic last month. While there, I picked up the 6 October issue of ČMN (České motocyklové noviny), the weekly motorcycle tabloid. It had a front page banner saying "Jawa Californian Returns To Production". Here's how it went:



By Petr Pour

A wave of retromania has hit the Czech Republic. On the domestic market the Jawa Californian is returning, in several capacity classes.

Jawa have had many requests for a retro model. The upcoming news could therefore be well received. Unlike previous attempts to return to the famous models in the form of a Californian 350-640 at the new millennium and a few years later the Bizon, which were really just the old names stuck on, these new models are based on previous design patterns. So much so that some parts are identical with the originals.

Here at ČMN in the past we have featured a private owner's 250 OHC Jawa Californian conversion, built by Jawa enthusiast Vojtěch Blecha. This machine became the inspiration for Jawa's small-scale production motorcycle. It will not be purely a product of Jawa at Týnec. "The demand for these models is not so big that we can start full-scale production. Therefore, we decided to produce it in cooperation with one of our dealers," says Jawa business manager Jiří Kraft. We can add that the dealer in question is Mates Moto of Lošánek. Here we also had the opportunity to view and photograph the first prototype of an unfinished model OHC Jawa Californian. The basis is a Jawa 250 Travel, which will be adapted into the look of the original Californian. This, after all, is how Vojtěch Blecha did it.

The prototype compares well with Vojtěch Blecha's one-off, but will nevertheless be different. The biggest changes are the paint, exhausts, and clocks. For paintwork Jawa and Martin Pavlus of Mates Moto want something closer to the original Californian colour scheme. So there will be black mudguards with a red stripe in the middle. Same colours for the tank. The headlamp gets red support brackets. These are the basic colours, but others can be specified. The customer can order the machine in any colour, including colour of frame and engine. Obviously that will cost more.

The instruments (one large "clock") are based on the original design. This will be partly recessed into the headlamp. There won't be a round analog clock fitted, but a digital Acewell design instead.

The last big difference from Mr Blecha's conversion are the exhausts. Jawa has made it a condition that no part subject to homologation can be altered in any way. And this includes exhausts, so they remain from the original Travel. The indicators are also the same as the Travel's. To finish off an original Californian tank is fitted, plus side box and mudguards from the model 634 and a seat from the aforementioned modern "Kalif" 350/640.

Most interestingly, you can buy the new Californian not only with a quarter-litre engine. Due to the simplicity of the reconstruction it's possible to modify the 125, the existing classic two-stroke 350, or even some of the older 350 models. Delivery time should be around one month. The last unknown is the price. It has not yet been precisely determined, but should not exceed 85,000 crowns (€3,400) for the Californian model 250, which is about 20,000 crowns (€800) more than the basic model Travel. For the money you get an interesting retro four-stroke machine with an output of 13 kW which meets Euro 3 and has a consumption of about 3.5 litres of gasoline per 100 km.

All this information comes directly from the Jawa factory. We told you earlier that they were developing a 660 Californian model. Now we've managed to get snapshots of the prototype, and other information. Contrary to expectations, the first of the big Californians will go on sale next year. "At present, the Californian 660 has passed driving tests for 2012 so we approved production of the first limited edition of the model," says Jiří Kraft.

The Jawa 660 Californian is based on the Sportard model with a single-cylinder Minarelli engine, plus a number of earlier Jawa production parts.

(With acknowledgments to the run by Bert (Vojtěch Blecha) in the Czech Republic. Also to Google Translate for doing about 75% of the translation work for me!)

Spider Pat

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Are you dreaming of a Wet Christmas.

Then the JAWA Cz Club Ireland Christmas Party could be just what you are looking for.

Martin and Misa have organised for us to meet in the Czech Inn, Temple Bar. The Menu is Ala Carte, or there is a platter for 10 people costing 40euro. So a chance to meet, eat, drink. I hope to meet as many as can make it and for those who can not, be sure that we will raise a toast to absent friends.

Date: Saturday 10th December.

Venue: The Czech Inn, Temple Bar.

Time: From 6 till ??????

email to let us know if you can make it: or just drop in.

Red Carpet Visit

Mehmet, a loyal supporter and contributor to our club and e-mag, is in the Grand Hotel, Wicklow, for this week. He expects to visit Bray after 17:00 on Wednesday 30th November. I suspect a look at historical sites like the Porterhouse will be in order. Anybody who could make it would be welcome. He probably won't hang around too late, as I imagine he'd need to get back to Wicklow.

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