Owners Manual
Contents
1.2. outside the usable click range When you think you have made an improvement go back to what you started with and double check to be sure Pay attention to changes in conditions like tires or temperatures etc In general compression damping changes should be used to influence the car s stability and response while rebound damping changes should be used to influence comfort and traction When you need more damping force you should mainly try to increase compression damping and use as little rebound damping as possible This usually means that you gain comfort and handling performance Trouble shooting The solutions below are what normally works Again if the car is not properly set up the result can be totally different Regarding traction the tires of course have a very large influence Also bear in mind that you normally have to make a compromise between the different behaviours of the car to achieve the best overall performance A Bad traction on loose gravel Increase rebound damping on all 4 corners B Bad traction on tarmac Decrease rebound damping on all 4 corners C Turn in understeer Normally not a damper problem but try increas ing rebound damping on the front D Mid exit understeer Try increasing rebound damping on the front Take into account that behaviour on corner entry also can influence this phase E Mid exit oversteer Normally depending on wrong spring and anti roll bar combinati
3. Ohlins car shock absorbers are based on Ohlins successful application of the de Carbon concept In short that means that the damping oil is put under gas pressure and separated from the gas by a floating piston The de Carbon concept has many advantages It prevents the risk of cavitation that can wear out internal components and cause inconsistent damping It eliminates aeration of the damping oil which also causes inconsistent damping It improves the cooling because the oil is in direct contact with the outer tubing It gives more consistent damping regardless of the shock absorber s working temperature and it makes the shock absorber last longer The shock absorber reservoir connected directly to the shock absorber body is in fact an exten sion of the main body which contributes to the improved cooling The reservoir contains the floating piston and the gas that pressurises the damping oil The oil is forced through a base plate reinforcing the damping At low shaft speeds the damping oil is forced through an adjustable bleed valve in the main piston The valve affects mainly rebound damping and has only a small effect on compression damping The adjuster is connected to the valve via an aluminium shaft that runs inside the piston shaft When the temperature in the shock increases the aluminium shaft extends thereby closing the bleed valve gradually This diminishes the influence of the oil viscosity changes
4. instructions for fitting and maintenance are not followed exactly Similarly the warranty will become null and void if the instructions are not adhered to Contents Safety signals sscuouontsinncceaadnntidmannteataiasaineneceecions 2 WII CUTE esnean o aa 3 PSS a E E E E ET AEN 3 When you are driving ccccceeeessseeeeeeeeeeees 4 External adjusters cccccccseseeeeeeeeeesseeeeeeees 6 Recommended settings cseeeceeceeeeeeeeeeeees 6 Setting Up your Caf sassssssssnsesssuennnnnneneeennnnnnenne 6 Making adjustments cccccesseeeeeeeseeseeeeeees 7 Maintenance INSPECTION cccseeeeeeeeeeeees T Trouble shooting ssesssssnoeeenneneennnennnrnnnnna 7 Racing AB cannot be held responsible for any personal injury or damage whatsoever that may occur after fitting the shock absorber Contact an Ohlins dealer or other qualified person for advice 2 Please study and make certain that you fully understand all the mounting instructions and the owners manuals before handling this shock absorber kit If you have any questions regarding proper installation procedures contact an Ohlins dealer or other qualified person 3 The vehicle service manual must be referred to when installing the Ohlins shock absorber NOTE Ohlins products are subject to continual improve ment and development Consequently although these instructions include the most up to date information available at the time of pri
5. Owners Manual Ohlins car shock absorber for Honda S2000 Including How the shocks works Making adjustment Inspection and maintenance Introduction All of Ohlins advanced suspension products are adapted to the brand and model This means that length travel springaction and damping charac A WARNING 1 Installing a shock absorber that is not approved by the vehicle manufacturer may affect the stability of your vehicle Ohlins Safety signals Important information concerning safety is distinguished in this manual by the following notations The Safety alert symbol means Caution Your safety is involved WARNING Failure to follow warning instructions could result in severe or fatal injury to anyone working with inspecting or using the suspension or to bystanders CAUTION Caution indicates that special pre cautions must be taken to avoid dam age to the suspension NOTE This indicates information that is of importance with regard to procedures hlins Racing AB All rights reserved Any reprinting or unauthorized use without the written permission of hlins Racing AB is prohibited Printed in Sweden teristics are tested individually just for the motorcycle that you have decided to fit with Ohlins suspension Before installation hlins Racing AB can not be held responsible for any damage whatsoever to shock absorber or vehicle or injury to persons if the
6. due to temperature keeping the flow through the valve virtually the same regardless of temperature At higher shaft speeds the damping forces are primarily controlled by the main piston and its compression and rebound shim stacks By changing the numbers diameter and thickness of the shims in the stack and by using different jets in the valves your Ohlins shock absorbers are tailor made for just your car Key features Lightweight aluminum body Large reservoir for better cooling Double acting damper adjuster Quick response for best handling Optimum consistency on long runs Easy to dial in reshim rebuild and service Professional technical support Base valve Large diameter floating piston When you are driving Base plate The Ohlins WCJ and MCJ shock absorbers features a base plate which allows the damper to work smoother and safer fig 2 and 4 This base plate eliminates the cavitation risk without the need of increased gas pressure It consists of a fixed dividing wall with apertures and with shims on both sides In the center there is a jet that is available in different sizes The stiffer the compression valving on the main piston the more restrictive the hole in the base plate jet The fluid that flows through the base plate is the volume of the shaft displacement which also moves the floating piston The shims on the compression side eliminate the risk of cavitation and the shims on the rebou
7. nd side works as a check valve Compression phase On a smooth surface When you are driving on a smooth surface and the shock absorbers are compressed slowly low shaft speed the damping oil is forced only through the adjuster valve in the piston shaft fig 1 flow 3 The oil displaced by the piston shaft is forced through the valve in the independent compres sion damping base plate into the large diameter reservoir fig 2 The floating piston in the reservoir is forced to move compressing the gas behind it further When the shock absorber extends the pressure behind the floating piston will force the oil through the valve in the base plate and back into the shock absorber body fig 6 flow 1 and 2 The oil beneath the piston returns through the adjuster valve in the piston shaft fig 5 flow 3 Hitting a bump When you are hitting a bump the shock absorbers are compressed fast high shaft speed The oil can not be forced fast enough through just the valve in the piston shaft The pressure on the compression side increases and opens the shim stack covering the compression orifices in the piston fig 1 flow 2 Also oil displaced by the piston shaft can not be forced fast enough through just the valve in the base plate The pressure increases and a shim stack parallel to the valve opens fig 2 The floating piston is forced to move compressing the gas When the shock absorber extends the floating pis
8. nting there may be minor differences between your suspen sion and this manual Please consult your Ohlins dealer if you have any questions with regard to the contents of the manual Introduction Ohlins Racing congratulates you on your choice of shock absorbers for your vehicle Your new Ohlins high performance shock absorbers are developed from experience gained during years of successful co operation with the World Championship winning teams Total shock absorber length spring travel and damping forces are developed just for your car The design and the settings are consequently the results of extensive testing and no guesswork All Ohlins shock absorbers are designed with just one aim to win races To design a winner you need a concept starting with a unique know how You add engineering skill precision and the best materials available The result is quality endurance and winning performance Our shock absorbers are used by the winning teams in World Rallying Touring Cars CART and by several top teams in Formula Atlantic Formula 3 Formula Ford NASCAR Late Model and in Truck Racing etc Ohlins suspensions have dominated the motor cycle and the car racing scene for several years and have captured over 80 World Championship titles A network of authorised Ohlins service centres around the world with specially trained mechanics can help you with personally tuned settings service repairs and spare parts Design
9. on but try reducing both compression and rebound damping on the rear Maintenance inspection After every competition or hard run 1 Clean externally and spray with an all purpose oil after washing with detergent 2 Check externally for damage Every 10 000 km 3 Clean all parts with a soft detergent 2 Lubricate the piston rod except the thread and the scraper with a layer of hlins red grease part No 146 01 100 grams or 146 02 400 grams After 50 000 km Change shock absorber oil Use hlins shock absorber oil only NOTE Discarded hlins products should be handled over to an authorized work shop or distributor for proper disposal More info www ohlins com Precision Makes the Difference fi 0 dy D If You are looking for the ultimate in performance this is the a right site Surf around and find out what the ultimate In suspension is all about Read this years Newsletters Softail for Harley Davidson The First Volvo S60R with CES Ohlins Teams amp Riders 2003 and more The ultimate suspension site Find out everything about your suspension Download mounting instructions manuals and brochures And a lot more m m OHLINS ADVANCED SUSPENSION TECHNOLOGY Ohlins Racing AB Box 722 S 194 27 Upplands Vasby Sweden Phone 46 8 590 025 00 Fax 46 8 590 025 80 Your Ohlins dealer 07460 01 Honda S2000 Issued 03 04 10 Teknisk Illustration AB 100 ex
10. our car Recommended settings The shock absorbers in your kit are adjusted to the Ohlins recommended setting for your car see Mounting instructions We advise you to use this as your start setting Setting up your car Installing new shock absorbers may alter ride height wheel angles etc on your car Therefore it is wise to do a complete resetting of the car after you have installed the Ohlins shock absorbers Perform the following steps before using the shock absorber 1 Check ride height front and rear Adjust if necessary A Check corner weight front and rear if scales are available Adjust if necessary 3 Check all wheel angles front and rear Adjust if necessary Making adjustments Suspension settings are dependent on your car s weight your driving style road conditions etc If you are not happy with our recommended set tings here are a few guidelines and ground rules how to make adjustments To make improvements it is important to understand the function of the shock absorbers and through testing learn how they affect the handling of your car Always start with the Ohlins recommended settings see External adjusters and Recom mended settings NOTE Higher click numbers give less damping force When making adjustments keep notes make adjustments one at a time and in small steps The adjusters should normally not be adjusted in steps of more than 2 clicks at a time and not
11. ton will force the oil through the base plate back into the shock absorber body fig 4 The pressure difference over the piston is still high and the flow can not be forced fast enough through just the valve in the piston shaft The shim stack covering the rebound orifices in the piston opens and the oil returns fig 1 flow 1 Rebound phase 4 Added damping force Reduced damping force External adjusters On the Ohlins shock absorber the rebound adjustment device is located at the end of the piston shaft Adjustments are made with a3 mm Allen key Fig 5 The temperature compensation system of the rebound adjuster reduces the number of clicks due to the elongation of the aluminium shaft as described earlier when the shock absorber is hot Therefore always make changes from the previous click position without first closing the adjuster To count the number of clicks you are using first let the shock cool down to ambient temperature NOTE Using to much force when closing the adjuster will destroy important sealing surfaces Use no tool simply your fingers All the adjusters have a normal right hand thread Click position zero 0 is when the adjusters are turned clockwise to fully closed WARNING There is no stop telling when the adjusters are fully open It is possible to unscrew the strut rebound adjuster if more than the recommended usable Clicks are used Please see Setting up y
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