Ns400r engine tuning book

Honda ns400r manuals manuals and user guides for honda ns400r. Honda motorcycle electrical wiring key color chart here. Our mission is to tune your engine to its maximum potential for its specified application. There are two main causes, a glow plug problem or an incorrect fuel air mixture. This month i will discuss the basic setup and tuning of twostroke glow engines without a fuel pump. The ns400r was by far the best put together, although it does sound like a swarm of angry wasps. View and download honda ns400r owners manual online. Under the fairing there is a three cylinder engine, two pots point forward and one went straight up. Some people claim that the export models of the ns400r made about 72 horsepower. Modern engine tuning graham bell 54mb supercharging.

The honda ns400r was a streetlegal roadoriented twostroke sport bike produced by honda motor co. Noteworthy are the chapters on cooling, exhaust and the ignition system. Show any 1986 honda ns 400 r for sale on our motorcycle classifieds. Graham bell is an acknowledged expert on engine tuning, with many years experience in this field. David silver spares us llc specialise in honda motorcycle parts from the 1960s to current models. Unfollow honda ns400 to stop getting updates on your ebay feed. Tuning bls a series engine by david vizard abebooks. The fcr carburetor installed in the ns400r honda engine generates this engine sound crazy of it. Ns400r on the dyno at dynotech ecosse longer clip 66. Buying a bike starts at bikez get a list of related motorbikes before you buy this honda. For more information on the ns400r, check out this article from. Honda ca125 rebel ca 125 owners maintenance instruction. In 1983 freddie spencer, riding for honda, became the youngest 500cc world champion ever.

Late honda ns400r engine, looks to be one of the last engines from 198687 or so, as can be seen from the high digit engine number. Original bodywork is getting hard to find and very pricy the engine is only about the same power as nsr250 anyway which is a much better engine so no real reason to put the engine in to nsr250 frame. For example, a cc engine may produce 125 hp in stock form and 175 hp after race tuning. To find regular servicing, mechanical repairs, accident repairs, mot testing, engine tuning, rolling road setup and chassis tuning in aprilia gp performance. As hondas first attempt at cashing in on freddie spencers grand prix success with the ns500 twostroke triple, the ns400r had to be true to the originalfrom its aluminum frame, triplecylinder engine, multipiece composite wheels and swoopy glasswork. After really good sales of my autobiography the mechanic who got lucky, i have completely sold out. Basic sds tuning guidelines for aircraft applications. These pages are intended to be an aid to owners of the honda ns 400r who do not own the original workshop manual.

Honda ca125 rebel ca 125 carburetor repair rebuild kit here. The kit pipes allow the engine to rev out to 1rpm and gives top speeds in the. It is very important to understand that tuning a single item fitting bigger. Released in this remarkable two stroke v triple made bhp rpm pretty incredible for just a four hundred and was of course based on the championship contender in the cc grand prix class ridden by freddy spencer amongst others although on the heavy side by today s standards at kg. Many thanks to everyone that bought the book and i hope you enjoyed it the forward is written by james whitham, and there are contributions from niall mackenzie, terry rymer, jim moodie and jeremy. Oh and the whole thing weighed less than 360 pounds.

The 387cc engine produced 72 horsepower and 37 pound feet of torque, both at nearly 10,000 rpm. The black enamel paintwork is very clean, suggesting very low use miles. The ns400r was inspired by hondas ns500 also known as the rs500r 500cc gpbike ridden by freddie spencer. Modern engine tuning achieves this end, and presents engine tuning as an art as well as a science. While these images are supplied free of charge i highly recommend that you attempt to find a manual of your own, the quality will be much better.

Tuning engines can be a mysterious art, all engines need a precise balance of fuel, air, and timing in order to reach their true performance potential. But more importantly, just take your time when tuning. This is the most comprehensive efi tuning and calibration book available and that is why it has sold in 36 countries worldwide and is used as the efi tuning text book by technical schools such as school of automotive machinists and studied by students at lincoln tech and wyotech. Id been toying with the idea of fitting the 300 kit from tyga when an ns400r came up for 700 bucks another impluse buy. The goal here is for the educated enthusiast, skilled technician, and automotive engineer alike to all be able to come away with something. Honda ns400r rothmans 1986 low mileage and very tidy. Nov 22, 2017 ns400r on the dyno at dynotech ecosse longer clip 66. My engine was hitting mid 8000 rpm on the dle 20 i would say you are pretty rich if you are not getting mid 8000 rpm or you are lean on the bottom possibly. There is quite a large section on changing the face of production racing and into the marlboro series and the lc era and through the kr1s and rgv eras. This factfilled guide covers all aspects of engine tuning in detail, including filters, carburation, intake manifolds, cylinder heads, exhaust systems, camshafts, valve trains, blocks, cranks, con rods and pistons, plus lubrication systems and oils, ignition systems, and nitrous oxide injection. Since then other bits have been added and will continue to be. Ideal for extending silencer away from engine when the engine used close to operator saw bench etcsee my other listing for complete engine.

Ive finally had the bugger rebuilt complete with new chassis and ridden it in anger. The cost of this compromising is a motor that peaks at just 9800rpm. What the ns400r gave up in power, it made up for with sweet handling. Brought for 16610 selling for 7100 onotext me on 07710509928 if interested. By adopting the ns cylinders coated with a special treatment of carbide, nickle and silicon cylinder walls, helped improve durability and reduce friction.

It is a musthave for tuners and calibrators and a valuable resource for anyone who wants to. To understand how to tune your engine for best performance, it helps to first understand the function of the carburetor. Honda ns400r news newspapers books scholar jstor april 2011 learn how. Honda ns400r model history the design took two years to come to fruition and was built with little regard for the race machine, having been based around the mvx250 triple of 1983. You can also sign up for email notification when such bikes. Before this book even begins, i wish to make it perfectly clear that this is not an engine design or combustion theory text.

Carbon reeds, honda ns400 carbon reeds to fit the standard reed valve. We have 1 honda ns400r manual available for free pdf download. Nsr250 forums view topic ns400r engine in a mc21 chassis. Rc nitro gas engine tuning guide my engine doesnt start what might be causing the problem. Despite its superb execution, the ns400 was lost in no mans land, between the 500s and 350s, and is now a rare beast. The ns400r is convincing evidence that honda knows precisely where to draw this line. The man for parts is ian wright at classic race replicas.

Changes in fuel type, or in wear as the engine breaks in, may also call for re tuning. Msx125sf grom other products new honda genuine parts msx125sf parts book. Here we will explain engine tuning, from light to hard, as simply as possible. I have never had such a well thought out and easy to understand guide to. Alloy cylinder base gaskets to raise the exhaust and transfer. Realise most have been posted before though scattered, yet most links are dead. This is the book if you want to figure out how to tune your efi system.

Keihin carb carburetor tuning rebuild service manual here. The engine was a three cylinder 400cc liquid cooled two stroke engine that made 59 horsepower at 8,500 rpm for the japanese market. This article is intended to be used in conjunction with the sds installation and tuning manuals which contain more detail. Tuning parts for honda ns400r, ns250r, suzuki rg500. Parts for honda ns400r, ns250r, suzuki rg500, yamaha rd350 ypvs, rd350lc. Honda c90 c 90 service maintenance repair manual 1977 2003 here. It covers my early days in the motorcycle trade, on to starting my own mc business then forming my tuning business. When a glow plug is working properly, it will burn a bright orange. Honda ns400r things that make us go ohh classic motorbikes. All nsr models share the same engine configuration. Honda ns400r ns 400r ns400 8588 service repair workshop.

The engine is completely reversed when viewed along side the track machine with the road bike having two of the three cylinders laying horizontal, facing forward. New addition to the garage, 1985 honda ns400r 3 cylinders 2 stroke machine top speed achive around 210 kmh. Honda ns400r the father of honda motorcycles, soichiro honda, was a devout fourstroke fan, and long after he retired in 1973 the company remained loyal and committed to fourstroke street bikes. We have extensive experience in tuning two stroke motorcycles, especially the nsr250. This is the first installment of a series of articles on general engine care and maintenance of both glow and gasoline engines. Overall performance puts safety first whilst improving the three basics of. Boosted cars are known to get massive power gains from revised ecu maps, but theres always been a question mark over chipping. Most of us including myself have experienced the reality check of your first gas engine that wont start, wont stay running, runs poorly, or quits in flight.

Honda ns400r motorcycles for sale in australia bikesales. Please take best advantage of these honda ns400r 1985 f england partslists they often contain vital information for carrying out repairs on the ns400r 1985 f. The chassis detail blows the rg500 and rd500lc into the weeds. The ns400r has a honda v 3cylinder engine with a 90degree crankcase with 2cylinder front and 1 cylinder rear, lightweight slim and compact design. Online honda part number search, worldwide delivery. Everyday low prices and free delivery on eligible orders. Decades have passed since i hung around with john and jim. Unfortunately, however, the peaky engine made the ns400r difficult to live with and its 400cc capacity meant it didnt measure up against its 500cc competition. Advanced tuning takes engine tuning techniques to the next level. Honda motorcycle manuals 1980 to now classic cycles. Kr250 nsr250r ns400r rd400 tzr250r sp 3xv racing kit manual. And while engine tuning has always been considered an art by many, all engines truly need to reach their true performance potential is a balanced combination of air, fuel, and timing. I am very picky about my books, i wont even buy one if its amazon rating is under a 4, and i.

Your performance workshop servicing the mid north coast. Nitro engine tuning my guide based purely only on my experiences. The largest parts list front fork contains sixtythree products for this ns400r 1985 f england. Excellent factory condition,candy black cherry, horizontally opposed 6 cylinder engine. Honda ns400r 1985 f england parts lists and schematics. This specific honda ns400r is claimed to be in perfect condition, and it had a recent tuneup. View our full range of honda ns400r motorcycles online at. Inside the engine is a lesson in friction reduction, just like the race machine, the crank spinning in special bearings while maintaining a perfect. In fact, it has a unique 3 cylinder configuration delivering about 70 hp. Engine tuning basics from terryscustom flyinggiants. The handling is sublime, more capable than ill ever be, however, it lacks the grunt that my tuned rgvs had. Ns400r engine for sale in uk 34 used ns400r engines. Honda ns400r in france probably not as desirable as suzukis rg500 4 cylinder or yamahas rd500, the ns400r is something in between an rd350 and rd500. Ns400r honda engine sound awakening by fcr carburetor.

Thread repairs engine rebuilding job packing engine packing. And check out the bikes reliability, repair costs, etc. Improve the performance of your classic mini engine a diy guide here at mini mania we know speed. Tuning bl s aseries engine by david vizard and a great selection of related books, art and collectibles available now at. As one of the holy trinity of mid 80s race replicas the prices of ns400rs are continuing to rise. This article is within the scope of wikiproject motorcycling, a collaborative effort to improve the coverage of motorcycling on wikipedia. Honda classic cars ns400r for sale car and classic. Why remapping a naturallyaspirated car is totally worth the. The honda ns400r was a streetlegal roadoriented twostroke sport bike produced by honda. And this means your nitro experience will be more enjoyable.

A1 engine tuning coffs harbour, new south wales facebook. This motorcycle, scooter or mopedrelated article is a stub. The chapters are well planned and contain a wealth of detail, tables, and calculation methods. First off, a small thank you to the kind people who took the time earlier this year to help find me a 21 frame with v5. Website goobike exchange shall make all of customers satisfied to buy motorcycles from us. I will cover most of the basics, including setting up your engines, basic cleaning, maintenance and troubleshooting. Youve invested in a high quality aircraft and all of the accessories, and now youre struggli. Finally, after adhering to the fourstroke for 32 years, honda released its first twostroke street bike, the h100, in 1981.

Why remapping a naturallyaspirated car is totally worth the money. Engine tuning terms carburetor carb the engine component that regulates the flow of the airfuel mixture into the engine. Honda ns400r classic 2 stroke race nsr400 triple t. Honda ns400r jim lomas end cans silencers x 3 large diameter. Tuning parts for honda ns400r, ns250r, suzuki rg500, yamaha.

If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks this article has not yet received a rating on the projects quality scale this article has not yet received a rating on the. As you can see in the photos at some point there has been an engine problem. In the history of the honda ns400r, we cannot ignore the south african bikes. Ns400r for sale honda ns400r ns400 r nc19 rear back suspension shock with pre load adjuster. Honda ca50 jazz ca 50 illustrated online parts list diagram schematics here. Pjme motorcycle engineers, 2 stroke engine specialist aprilia cagiva. How to tune and modify engine management systems motorbooks. Advance tuning performance howto sa design by greg banish isbn. Oct 31, 1999 increase the power output of your aseries. Verified as, just out of the crate, 0 mileage rune by courtenay motorsports. I am very proud of the riders i helped and sponsored and there is an appendix. Honda ca125 rebel ca 125 illustrated online parts list diagram schematics here. I recommend a screen resolution of 800 x 600 or above. The south african version was a special run of 50 motorcycles with one thing in mind, the race track.

It is impractical to tune any aspect of the standard exhaust system, so a complete. The carburettors are carefully arranged inside the v to keep the engine short, hence the wheelbase can be kept short too. In total, the parts lists contain one thousand three hundred fortytwo parts. Two years later, in belated celebration, honda released the ns400, a bike claimed to be a roadgoing replica of spencers machine. Get hold of a book called power tuning the spritemidget. Read the riders comments at the bikes discussion group. Get price alerts and new listings for this search right in your inbox.

The objective of tuning is to improve the volumetric efficiency of the engine. Motorcycle performance bike tuning rolling road oxfordshire. This book explains how the efi system determines engine operation and how the calibrator can change the controlling parameters to optimize actual engine performance. If you take the time to carefully tune your engine, it will last longer and perform better. Honda motorcycle basic fault finding troubleshooting guide here. This is a modified tube on the front of the engine. John and i worked for the same corporation and i found a 500 triple kawasaki for him at a reasonable price. Other books to his credit are modern engine tuning, twostroke performance tuning and forced induction performance tuning. X2 magazines classic motorcycle mechanics 316 317 2014 ns. He converted it into a drag bike, modified the engine completely and added mikuni carbs. It is very important for you to understand at this point i accept no responsibility for your engine and its performance or lack of performance if you choose to follow this guide. In the rothmans colours as found here in france, it is a true classic honda of the mid 80s. But simple does not mean easy, and thats where engine management.

This resource was primarily intended to help those of you that own hondas ns400r v3 grand prix replica motorcycle by providing copies of the long obsolete and unobtainable parts book and workshop manual. We offer two styles original style with bottom exhausts one each side gp style with both bottom exhausts on r h. Lets journey back to 1973 and read the book that was the two stroke bible of that era. Honda ns400r classic restoration project ns400 rg500 rd500. Forced induction performance tuning a practical guide to. Honda motorcycle yuasa battery application chart manual here. Classic mini engine performance enhancement a diy guide. Fan site of the ns400r freddie spencer replica road racing machine from middle of the 80.