No video :(

Jawa 350/639 preparations before & START (no guide)

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Mounting the engine back into the frame, coupling with the peripherals, overall motorcycle preparing incl. brake flush and tank valve cleaning AND STARTING! :) Please note:
THIS IS NOT A GUIDE ON HOW TO DO IT!
Montaz motora do ramu, pripojenie periferii, vseobecna priprava vratane vymeny brzdovej kvapaliny a cistenia ventilu nadze A STARTOVANIE! Prosim berte na vedomie, ze:
TOTO NIE JE NAVOD AKO NA TO.
Videos before:
Mounting the engine together
• Jawa 350/639 final eng...
Mounting deadmass compensating panels
• Jawa 350/639 engine mo...
Removing the crank, comparison btw. serial and sport crank
• Jawa 350/639 engine di...
Dismounting pistons and cut the engine in halves with a selfmade tool
• Jawa 350/639 engine di...
Dismounting primary gear and clutch
• Jawa 350/639 engine di...
Dismounting some basic parts, cleaning the engine
• Jawa 350/639 engine di...
Engine out of frame
• Jawa 350/639 engine re...
#motorcyclevideos
#motorcyclerepairing
#motorcyclerestoration
#motorcyclerepair
#motorcyclemaintenance
#motorcycleromance

Опубликовано:

27 авг 2024

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Комментарии : 45

@krakenjuduras3515 Год назад

On nalil do nádrže olej, a pak benzín z kanystru. To si jako myslí, že se mu to promíchá???? Žasnu přímo!!!! Jako kdyby nemohl ten olej kápnout do kanystru a párkrát ho otočit vzhůru nohama. Neuvěřitelné!!! Asi nikdy nejezdil delší dobu dvoutaktem

@REBUILDLab Год назад

Kraken, olej pre dvojtaktne motory ma vybornu miesatelnost s benzinom. Ak sa nepremiesa pri nalievani benzinu do nadrze, tak preco by sa mal v samotnej bandaske? Samozrejme ze sa zmiesa tam aj tam. Dvojtaktami jazdim desatrocia a vzdy som to tak robil. Je to v poriadku, funguje to.

@lazlo1425 3 месяца назад

...alebo premiestnit z benzinolku kaniser s miešavadlom...dolná polovica kanistra je červenej farby...a má rukovat na miešanie benzinu s olejom M2T...a ked tankuješ doma bez spominaného kanistra,tak nalejes olej do nádrze,a následne aj benzin,a ono sa zmieša...v krátkosti...

@CZ350tuner 3 года назад

18:40 In the 638.0 workshop manual (1986) it's 25:1 for running in and 33:1 for normal running (to prevent oil starvation of the centre crank bearings). I've always run my Jawa 632, 634 & 638 engines at 33:1 and the the crank centre bearings last for over 50,000 kilometres.

@REBUILDLab 3 года назад

Really? Hmmm, then it is worth considering. My info is 1:50.

@andrewallen9993 3 года назад

@@REBUILDLab oil and spark plugs are cheap, engine overhauls are expensive, I run my Jawas (Tramp and Twin Sport) 30:1.

@REBUILDLab 3 года назад

@@andrewallen9993 sure, yes, as I said, worth considering, I will try out, but what bothers me is, that it will be very smelly. Don´t like that. What kind of oil do you use?

@andrewallen9993 3 года назад

@@REBUILDLab William Penn (Fuchs) API TC JASO FC For it to be really smelly ( in a nice way and it must be premix) try Castrol R40

@REBUILDLab 3 года назад

@@andrewallen9993 Thanks for the tip, appreciate that

@deltaforce4921 3 года назад

Sounds verry smooth ! Good job

@REBUILDLab 3 года назад

Thank you Delta Force!

@PeryvindArnesen 3 года назад

Really great video, thank you!

@REBUILDLab 3 года назад

Thank you very much! You are welcome! :)

@Mustafa640 2 месяца назад

20:00 fuel filter reverse

@REBUILDLab 2 месяца назад

No, think it is correct like that.

@CZ350tuner 3 года назад

I've always set the timing to the 2.8mm. BTDC upper limit on all my Jawa & CZ twins, because t gradually wears down to 2.5mm. BTDC.

@REBUILDLab 3 года назад

Can be, I bought an electronic ignition, which I will install, when I come to it. This mechanical one is extremely hard to set up the same for both cylinders. Also the engine runs rough at constant speed or with very gas/load Maybe it hangs with set up of the carb together, but I tryied different setups and nothing. I think it really is a charactertictic of a two stroke engine, this rough running at low loads...

@CZ350tuner 3 года назад

You missed out the front engine mounting rubber protection block, which stops the mounting plate welds cracking from the excessive vibes from the 638 engine. I have a 632.1 that I installed a 638 engine into, without the protective block, and it cracked the front mounting plate weld on the frame after 10 months. I haven't gotten around to repairing it yet.

@REBUILDLab 3 года назад

I am not sure what you mean. Maybe you can give a link to it. This engine was runninig ages as it was assembled.

@CZ350tuner 3 года назад

9:50 Failing to remove the brushes before installing the alternator stator is a mistake that many have made, including myself. One only breaks the brushes this way once, then the lesson is learnt.

@REBUILDLab 3 года назад

Hmm, you're right. Yes

@emrahkaradogan8865 2 года назад

hi really good job your petrol filter is up side down you might want to check that thanks for the video

@REBUILDLab 2 года назад

Hi Emrah, really? I will check that. Anyway thanks for your comment! Have a nice day

@REBUILDLab 2 года назад

It was'nt :)

@CZ350tuner 3 года назад

Gas tanks can be cleaned with Coke Cola. White vinegar (a solvent of iron) also works, but not as good as Coke Cola. Pour a 2 litre bottle of Coke Cola into the gas tank and leave it for 24 hours. The phosphoric acid dissolve all the rust. IMPORTANT!! Don't drink the Coke Cola from the gas tank afterwards even though it will probably taste better than Pepsi Max.

@REBUILDLab 3 года назад

:) thanks for the tip!

@dairoalvarez9332 3 года назад

Good job

@REBUILDLab 3 года назад

Like to hear that. You are welcome

@jaroslavmandik2554 3 года назад

Ahoj. Pecka! Super celá série!!! Prosím tě, ty obrázky (převodovka, atd.) Z jaké to máš knížky? Žiju v zahraničí. Snažím se na svých 350-639 dělat všechno sám, ale nemám žádnou příručku. co se týče demontáže motoru. Díky předem za info!

@REBUILDLab 3 года назад

Ahoj Jaro, som rad, ze sa Ti paci. Obrazky mam z katalogu nahradnych dielov. Tento sa da stiahnut na webe, ked si zadas klucove slova. Prip napis mi mail a preposlem. Nech sa dari!

@2downshifter 3 года назад

Very nice

@REBUILDLab 3 года назад

Thanks a lot Sagar!

@andyplage6590 2 года назад

Is there no Twin Carb aftermarket options for these engines works easily give great power increase over single carb

@REBUILDLab 2 года назад

Hi Andy, maybe there is, but I didn't see any... Besides, there would be the need of synchronising them, the gas linkage and so on. Aftermarket injection would be better I guess

@jozefbircak8054 3 года назад

Pekne! Nie je veľmi čo dodať, nech slúži! Uhol pohľadu, ale ja nepoužívam papierový filter. Ani predkopy. Budíky, teda palubovka je zo 640-ky. A čo tam je vľavo na kraji, teplomer ? Kde je zapojený? Ako? Má to reálne výpovednú hodnotu? . MOL Dynamic Moto 2T Pozor! Väčšina moderných 2T olejov je predriedená. Aj tento. Treba dať viac, nad rámec predpísaného pomeru, bez rozdielu na režim, zábeh alebo bežná premávka. Cca tak o 10-15 %

@REBUILDLab 3 года назад

Ahoj Jozef, dakujem za koment, nejaky filter tam byt musi a toto je jednoducha volba...a co vlastne pouzivas? Na kraji je teplomer, je to zo 120iny, cidlo v niecom zaliate, prisrobovane k hlave medzi valcami a pred nim ke clona. Ma to hodnotu, jasne, normalne bezi motot tak na 110 v lete a za dazda tak na 70. No, o tom neviem, ze by bol olej riedeny, je to syntetika a tie redsie, lepsie sa miesaju s benzinom, menej usad, spolahlivesjsie mazanie pre vzduchac. Palubovka taka bola, chcem dat el. otackomer a digi tachac. Tie lanka to je zle, ked sa zmeni sekund koliesko, tak to uz neukazuje spravne, cele je to rozkmitane a tak. Mam palubku jednobudik zo 634, tak to nejak sklbim. Uvazujem nad inym zapalkom.

@jozefbircak8054 3 года назад

@@REBUILDLab Nazdar! Používam filter, ale s plastovým sitkom vovnútri, nie s papierovou vložkou. Budíky ako také nevadia, len ja som chcel nechať pôvodný dizajn, aj keď mám drobné rozdiely voči dobovej výroby. A olej? Vďačná téma. Ale pozri si v popise produktu: slovnaft.sk/sk/maziva/motocykle/produkty/motorove-oleje/mol-dynamic-moto-2t/ Tam to je. Predriediaca zložka.

@REBUILDLab 3 года назад

No fakt, nejaka predriedovacia zlozkatsm je. Neviem ako si to vysvetlit, ci je olej nariedeny, alebo je to zlozka oleja, ktora ulahcuje riedenie s benzinom. No ale hlavne pocitam s lepsimi vlastnostami celkovo oproti m2t, na kt. bezala masina pred tym. Jo, uz rozumiem tomu Tvojmu filtru, myslel som, ze je rec o vzduchovom :D