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Technical Articles and Specifications

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Marine Engines Repower – Bayliner Cierra 2655, 1991 model Mercruser MCM 5.0l LX
Dennis, Thanks for your inquiry and the opportunity at earning your business. Since Mercruiser made both Alpha and Bravo sterndrive models with that engine I would not be able to tell you without knowing which one your engine is setup for. Can you give me the original engine serial number? Or can you tell me if [...]

4.3L Marine Engine Longblock Performance Specification
Mike, Thanks for your inquiry and the opportunity at earning your business. The Hp rating for longblocks is determined by the fuel system that’s install back onto the engine. For example since GM only produced one marine version of the 4.3L during this timeframe Mercruiser used this same longblock on their 190 Hp 2 barrel carb [...]

Marine Engines – Replacement marine engine for my boat 5.7 mercruiser 1992 #0d763634
Marty, Thanks for your inquiry and the opportunity at earning your business. Using the links below you can review your options. Let me know if you need any further technical information or help placing your order. In either case I will be glad to assist! Link to Block Code/Serial Number Location http://www.perfprotech.com/store/app_themes/PPT/images/block-casting-no.jpg Link to Remanufactured Longblocks http://tinyurl.com/68kcet8 Link to Remanufacturing [...]

Suzuki Marine Outboard Motors – Replacing a Fuel Pump on a DF70
Step by Step Video Instructions illustrating how to change an electric fuel pump on a Suzuki DF70 outboard motor. Watch Video

Boat Trailer Parts and Accessories – How to Replace a Boat Trailer Hub
Step by Step video instructions illustrating how to replace a leaky oil filled hub on a boat trailer. Watch Video

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Mercury Mercuiser Vazer Engine Specifications

 Mercruiser Vazer 100            
      Mechanical‑Yes      
 Available Control Systems       DTS‑No        
      Axius‑No        
 Propshaft power       75 kW (100 hp)      
 Displacement       1.6 L (98 cid)      
 Cylinder configuration       In‑line 4        
 Bore × stroke       79 mm × 81.5 mm (3.11 in. × 3.21 in.)  
 Compression ratio       9.6:1        
 Fuel system       MPI        
 Ignition system       ECM 555 digital      
 Alternator amperage    Hot Cold    72 A 65 A        
   WOT    5600–6000      
 RPM    Rev limiter    6150        
   Idle in neutral    600        
 Minimum oil pressure    At 2000 RPM At idle    360 kPa (52 psi) 127 kPa (18.5 psi)    
 Thermostat    Seawater‑cooled models    N/A        
    MPI models with closed cooling    82° C (180° F)      
 Timing       Non‑adjustable      
 Firing order       1‑3‑4‑2        
 Closed cooling       Standard        
 Water drain system       Self draining      
 Flush kit       N/A        
 50 A circuit breaker      Standard        
 Minimum battery rating    Non‑DTS models DTS models    375 CCA, 475 MCA, 90 Ah N/A    
 Optional riser kits       N/A        
 MerCathode       Kit        
 Drive options      Vazer        
   Engine    171 kg (377 lb)      
 Weight    Transom Drive    51.26 kg (113 lb) 37.65 kg (83 lb)    
   Total package    259.91 kg (573 lb)