Performance Camshafts 01.03.2019 Performance Camshafts
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PERFORMANCE CAMSHAFTS 01.03.2019 PERFORMANCE CAMSHAFTS Thanks to our many years of experience and the careful attention paid to the respective valve train conditions, our PERFORMANCE CAMSHAFTS combine high power output with long service life. Our camshafts are manufactured from new, unmachined parts. We employ particular care in ensuring faultless tempering and first-rate surface treatment. Assembly information: It must be ensured during every camshaft installation that at maximum valve lift, there is still approx. 1-2 mm free lift available and that between the piston and the valve in the OT there is also still sufficient safety clearance. Tappets and rockers should, where possible, be replaced when installing our camshafts, and under no circumstances may they display visible wear. It is recommended to label the parts when disassembling the motor so that they can be re-installed in the same place. With the exception of racing setups, the valve springs can generally be left in series because a low revolution increase is already made possible by the altered cam profile. The valve clearance specified by the manufacturer of the engine should be used for normal driving. The specified opening times are given as effective opening times without ramp-up time. In determining opening times, it must be ensured that for an OHC engine around the same valve intake diameter can be achieved with approx. 15° less opening time compared to a piston engine. 2 PERFORMANCE CAMSHAFTS When installing a performance camshaft in a series engine, the appropriate tuning measures must be made at the same time. If possible, this should be carried out by a tuning company with experience of the respective engine. The desired engine performance is dependent on the quality of this work, and therefore we cannot provide any performance data for our camshafts. Warranty: Our camshafts come with a wear resistance warranty for 6 months after delivery. In the event of damages we provide a replacement for the part supplied by us. Further claims for subsequent damages are expressly excluded. Our prices: are ex works prices, not including packaging and VAT. In the event of interest in camshafts that are not shown here, please contact us. Price lists are valid for delivery as of 1st of March 2019 Schleicher Fahrzeugteile GmbH & Co. KG P.O. Box 70 17 08 D-81317 München Boschetsrieder Str. 125 D-81379 München Telefon: +48 89 78 50 07-0 Telefax: +49 89 78 50 07-39 [email protected] www.schleicher-fahrzeugteile.de 3 PERFORMANCE CAMSHAFTS Notes on measuring the opening times of camshafts in engines, especially for engines with piston, rocker arm or cam-follower valve trains Many influencing factors can severely affect the measurement result, - above all the elasticity of the valve train, - the accuracy of the measuring device, - the bearing clearance of the camshafts and rocker arm shafts, - possibly the sinking in of hydraulic elements and - the precision during the measurement. The opening times we specify are theoretical opening times at the end of the ramp-up time and at the beginning of the ramp- down time (beginning and end of the actual cam lobe). The valve movement, based on 1° revolution of the crankshaft, is partially extremely small (e.g. 0.007 mm), whereby the aforementioned influences on measurement can lead to rather considerable, apparent deviations from the opening times we specify. Furthermore, the assembly of the drivetrain (chain wheel etc.) and the camshaft drivetrain itself (elasticity etc.) can lead to further angular deviations. Our suggestion for a reasonably reliable measurement is as follows: pretension of all valves equally approx. 0.5 - 1 mm (on valve clearance setting, on each base circle). Then measure the opening times on a particular additional valve lift, e.g. 0.5 or 1 mm. Due to the fact that the opening times, as shown, also depend on the assembly and settings of the camshaft, the opening times specified by us can only be partially related to the position of the cams, but not to the overall position in the motor. Careful assembly of the camshaft must therefore always include test and adjustment work. Please follow our assembly instructions in the performance camshaft catalogue! 4 PERFORMANCE CAMSHAFTS Whether a camshaft/cam profile is more or less of a strain on the valve train can only be determined with an exact analysis and comparison of the cam profiles. However, in general (exceptions possible) it can be said that racing camshafts do not create greater strain on the valve train, so long as the engine revolution speeds are not considerably increased at the same time. During assembly, the clearance to the piston and the valve spring must be checked for blocks. A check to see if the valve spring is sufficient must be carried out in the event of an engine revolution speed increase. Due to the fact that tuned engines are more stressed than series engines, a shorter service life, greater wear and earlier malfunction of engine parts must be expected. Engine damage can also occur in non-tuned engines, especially if they are constantly put under a lot of strain. According to the statistics for component failure frequency (Wöhler curve etc.), after a certain age the likelihood of malfunction increases constantly. This is generally true for everything, from a bicycle to nuclear power plant. Whether a camshaft is responsible for engine damage can therefore generally only be determined by statistical inspections and not on an individual case basis. It must be checked whether the customer condoned this shortened service life in order to benefit from the increased performance. In the event that a customer does nevertheless claim for damages, it remains to be checked whether they did everything within their power to minimize this damage. For the aforementioned reasons, and because we are rarely exactly aware of the assembly conditions and use, we only grant a 6 month warranty on the replacement of camshafts in the event of a production or material failure. Liability for further damages is, however, insofar as legally permissible, not accepted. 5 PERFORMANCE CAMSHAFTS Informations to the catalo Venmertiebvn9:.k1.1rve M"----- Spr g. - ----;)I Sprz.A ---spr2.E AuslaB EinlaO Ausla8offnungszeit: OZ Ausl. ... Ao v.UT + 180° + As n.OT Beispiel: 45° + 180° + 20° = 245° (Kurbelwinkel) Ein la Ooffn ungszeit: 02 Einl. .., Eo v.OT + 180° + Es n.UT Beispiel: 25° 180° + 55° .. 260° (I<urbelwinket) 60 140 1~ 100 80 60 40 60 . -so' 100 120 140 160 20 40 60 prci-zu ng Au laO: GradvorUT OradvorOT GradnachOT GradnachUT Sprzg. Ausl. ""6Z Ausl /2 minus As n.OT w;......--f--+---- OZ Einl. --+---~>j OZ Aus. Beispiel: Sprzg. A 245°/2 - 20° = I02.S0 (Kurbdwinkol) A&4Sk0 v . UT E62S 0 v.OT As20°n. UT Es55 n. UT I prei-iung Einlafl: Sprzg. Einl. 6Z Einl./2 minus Eo v.OT I Beispiel: Sprzg. E;: 260°n -2S0 • 105° (Kurbelwinkel) UT OT UT VentilspieJ - Rampenhohe HOT= Hub in OT Spreizung: Sprz. ... (Sprz.Ausl. + Sprz. Einl.} /2 Beispiel· (102,5° + 105° /?. ,,. 103.75° (Nockenwinlce]) 6 PERFORMANCE CAMSHAFTS Deutsche Vers 1i on: OEZ: Dauer der Ventillhebung, Grad Kurbe llwelle Spr: Distanz der Nockenmitte!lachsen, Grad Nockenwelle Ventiltakt: AO: AuslaB offnet, Grad Kurbelwelle var UT AS: AuslaB schlieBt, Grad Kurbelwelle nach OT EO: Einlass offnet, Grad Kurbelwelle var OT ES: Einlass sclhlieBt, Grad Kurbelwelle naclh UT NV: N bedeutet: folgende Information bezieht sich auf den Nockenhub V bedeutet: folgende Information bezieht sich aur den Ventilhub Hub: Nockenhub oder Ventilhub, mm MH: M bedeutet: mechanischer Ventilspielausgleich H bedeutet: hydraulischer Ventilspielausgleich HoT: Nockenhub oder Ventilhub in OT, mm Gkd: Durchmesser des Grundkreises, mm UT: unterer Kolbentotpunkt OT: oberer Kolbentotpunkt A = AuslaB E = EinlaB 7 PERFORMANCE CAMSHAFTS Engl ish version: Oez: duration of valvelift, degree crankshaft Spr: distance lobe centerline, degree camshaft Valve time: AO: exhaust opens, de,gree cra nkshaft before BOC AS: exhaust closes, degree crankshaft after TDC EO: inlet opens, degree crankshaft before TDC ES: inlet closes, degree cra nkshaft after BOC NV: N means: folllowing information is for cam lift V means: following infonnation is for valve lift Hub: camlift or valvelift, mm MH: M means: for mechanical valve clearance H means: for hydraulic valve clearance HoT: cam lift or va llvelift at TDC, mm Gkd: diameter of base ci rcle, mm A = Exhaust E = Intake 8 PERFORMANCE CAMSHAFTS Italiano: Oez: tempo aperture albero motore Spr: gradi distensione albero a gamme AO: scarico apre prime del punto morto inferiore AS: scarico chiude dopo dlel punto morto superiore EC: aspirazione apre prima del punto morto superiore ES: aspirazione chiudle dopo del punto morto inferiore NV: significa: seguenti dati sono relevanti per Il a corsa della gamma Appure dellla valvola Hub: altezza gamma I MH: registrazione valvole meccanico Registrazione valvole idraulico IHoT: corsa in punto morto superiore (albero a gamme) Gkd: circonferenza diiametro A = scarico E = aspirazione 9 CARS PERFORMANCE CAMSHAFTS As at: 01.03.2019 sheet: 1 Type EA OEZ Spr AO AS EO ES NV Hub MH HoT price comment item-no. ALFA-ROMEO DOHC 1,6 - 2,0 ltr. Ro225 280 105 65 35 35 65 N 10,80 M 3,3 294,00 1357 Ro205 308 105 79 49 49 79 N 11 ,00 M 4, 1 353,30 1356 KA455 312 105 81 51 51 81 N 10,50 M 3,8 353,30 1362 Ro416 320 105 85 55 55 85 N 11 ,70 M 5,4 353,30 1361 AUDI 5-Zyl. Ritz.el 15, 15 Pin ion , separate order 1159 Ro 300.12 280 112 72 28 28 72 N 11 ,20 H 1,7 388,80 for hydr.