Helpful tips

How much HP can a B18A1 handle?

How much HP can a B18A1 handle?

The B18A block will handle up to 300 hp on a stock block.

What should compression be on a 90 hp Mercury outboard?

Re: 90 HP Mercury Compression Readings Hello 120 PSI is good for that motor. To do a compression test put the tester in the hole and spin the starter until the needle stops moving you want the readings to all be within 10% of each other.

What is a B18A1 engine?

B18A1 is the prime release of the B18 engine and powered the Acura Integra. It is a non-VTEC variant, a programmed fuel injection, and it can produce a satisfying 132 hp, 121 lb-ft, with a compression ratio of 9.2. Redline is at 6,500 RPM.

How much boost can a stock B18 handle?

How much boost can a stock B18 handle? B18 internals can handle 300 hp when well tuned. you can run 12lbs, but get it tuned properly. u should reach 275 with 10 or so psi with that turbo.

How much boost can a b18b block handle?

A lS stock block will push 300whp no problem.

What is a good compression PSI?

As a general rule a compression of 135 PSI or better is excellent. Similarly, a compression of 85 PSI or lower is extremely bad. The most desirable situation is that all cylinders, give the same or close to the same reading. Furthermore, that reading should be above 135 PSI.

How much horsepower does a k24 engine have?

The stock power output for the engine can reach 205 HP. With the addition of a turbocharger that power increases to 400HP+. Other performance parts can increase the engine’s power potential to the upper 200s and even 300 HP.

What are the compression specs for a Merc?

The general condition of the motor should indicate low or high hours as well. A merc dealer can connect to the ecu and tell you more. It may be worth it. The engine is fine. There is no spec, mostly because of the things Daveswaves mentions, but also because no known fault would cause 6 cylinders to all go bad by the same amount at the same time.

What should I expect from a Mercury compression test?

Bearing in mind there are a lot of things that can affect compression testing, not the least of which is highly inaccurate pressure gauges, test being run without the throttle open, dry cyl, carbon build up…..those numbers look low. I would expect a 3 litre 250 hp in good condition to read about 20 pounds higher.

Are there any specs for a Mercury engine?

The engine is fine. There is no spec, mostly because of the things Daveswaves mentions, but also because no known fault would cause 6 cylinders to all go bad by the same amount at the same time. The engine is fine.