mercruiser engine tuning mercruiser engine tuning
 
540cid (8.8litre) full roller cam
540cid (8.8litre) full roller cam 525BHP @4800 - 5300RPM
Torque = 521 ft ibs @ 2000 RPM, 593 ft lbs @ 4000 RPM, 551 ft lbs @ 5000RPM
At early stage of build
540cid (8.8 litre)
540cid (8.8 litre) Producing 593 ft lbs of torque @ 4000RPM
Over 500 ft lbs @ 1800 RPM !!
454cid (7.4 litre)
Greg Copp, then Technical editor of "Motorboat and yachting" magazine looking at one of a pair of special build 454cid (7.4) engines for a very famous "RIVA"
Matched Pair
`
A Matched pair of 475 BHP 560 ft lb torque engines under build in our "Clean Room" engine build shop.
Reversed Direction "RIVA"
`
See the fuller description of our reverse "RIVA" build on our Projects page
Reversed Direction "RIVA" Finished!
`
The first "RIVA" Finished, while the second (reverse rotation one) in the background nears completion.
Brand New 489
`
Brand New 489 (stroked 454) bottom end showing "ICON" forged race quality pistons.
These make 531 ft lbs of torque @ 3100 RPM.
Volvo Penta Rebuild
`
See the full Volvo Penta rebuild on our Projects page
V8 Balancing
`
When your engine is balanced at SWAYMAR, even your drive coupling is balanced down to 0.25 of a gram!
1920's Vintage Rolls Royce crank assembly on balancing machine.
`
Note balancing readings on the screen : 0.9 gram front end, 0.5gram flywheel end.
Twin Cylinder motorcycle crankshaft
`
Twin Cylinder motorcycle crankshaft with percentage calculated bob weights assembled on the big end journals
Note the screen : 0.8 gram (WT(g)) at angle 235. Less then 1 gram total out of balance.
Swaymar parts
`
These parts are supplied as standard to help our customers after the engine leaves us.
G.M Chamber vs Flow Bench Chamber
`
Why have a standard chamber when we can increase your BHP !