Jeniferleona
25.04.2021 12:02:41
Mercury Marine manufactures MerCruiser boat engines. They are divided into Turn-Key Start (TKS) or Multiport Injection (MPI) models. All run on 87-octane fuel.
See full version: MerCruiser Engine Specs
Mercury Marine manufactures MerCruiser boat engines. They are divided into Turn-Key Start (TKS) or Multiport Injection (MPI) models. All run on 87-octane fuel.
The TKS group includes four MerCruiser models. Each has a two-valve carburetor and a throttle range of 4,400 to 4,800 revolutions per minute (rpm).
Multiport Injection (MPI), 3.0 L to 5.0 L
It’s easy to look back at 75 years of Mercury Marine history and point to major milestones, such as the first 100hp outboard in 1962, the first V-6 outboard in 1976 and the first fuel- injected supercharged sterndrive to produce more than 1000hp (the HP1075 SCi) in 2004. However, Mercury has made so many significant advances — from the sublime to the simple — that improved the quality of boating, that the world of boating sometimes takes them for granted.
For example, in 1952 Mercury introduced the first splined propeller shaft, eliminating the need for a shear pin. More than 40 years later, to make the world’s best propellers available to all boaters, in 1995 Mercury introduced the first hub kits to make Mercury propellers work on competitors’ engines. One of Mercury’s earliest technological advances came in 1947, when the company introduced the first “full-jeweled power” in an outboard, which meant it was equipped with anti-friction ball, roller and needle bearings in all major bearing locations, improving reliability and efficiency. A year later, Mercury introduced the first in-line four- cylinder two-cycle outboard, the Mercury Thunderbolt, ushering in the modern era of outboards.
In 1994, Mercury introduced the first 3-liter outboard, the 225 Offshore. In 2004, the Mercury Verado became the world’s first supercharged four-stroke I-6 outboard. In 2010, Mercury Racing introduced the most powerful consumer engine in history, the 1350hp, followed by Racing’s QC4v 1650hp in 2013.
In 1994, Mercury introduced the first 3-liter outboard, the 225 Offshore. In 2004, the Mercury Verado became the world’s first supercharged four-stroke I-6 outboard. In 2010, Mercury Racing introduced the most powerful consumer engine in history, the 1350hp, followed by Racing’s QC4v 1650hp in 2013. more
After serving in the U.S. Navy, Dale Rose went to work for Kiekhaefer Aeromarine in shipping and receiving. With only about 50 employees at Kiekhaefer, “we all wore a lot of hats,” Rose said. [links]
For example, in 1952 Mercury introduced the first splined propeller shaft, eliminating the need for a shear pin. More than 40 years later, to make the world’s best propellers available to all boaters, in 1995 Mercury introduced the first hub kits to make Mercury propellers work on competitors’ engines. One of Mercury’s earliest technological advances came in 1947, when the company introduced the first “full-jeweled power” in an outboard, which meant it was equipped with anti-friction ball, roller and needle bearings in all major bearing locations, improving reliability and efficiency. A year later, Mercury introduced the first in-line four- cylinder two-cycle outboard, the Mercury Thunderbolt, ushering in the modern era of outboards. more
Sometimes he would finish his shift, and then go bale hay on the Kiekhaefer farm. When working all-nighters, “Mr. Kiekhaefer would come into the plant with buckets of Kentucky Fried Chicken — he’d make them open in the middle of the night and would bring it in himself.”
1993-1995 806347R5
Balance shaft, no mechanical fuel pump, roller camshaft one piece rear seal.
A. Easily identified by tall metal 10 bolt front cover different from 5.7L.
B. All 12 intake manifold bolts are at 90 degree angle to cylinder head machined surface. more
1996- 1998 807736R5
Balance shaft, no mechanical fuel pump, roller camshaft, one piece rear seal, "Vortech" cylinder heads with rocker ball & stud valve train.
Note:
A. Vortech heads are easily identified by only 2 bolts per corner of intake manifold for a total of 8.
B. The older crankshafts rear flange are 0.123" longer and have a small pilot bushing hole in back.
C. Plastic 6 bolt front cover. [links]
1986 - 1992, 14149R5
Non-balance shaft, mechanical fuel pump, roller camshaft, one piece rear seal.
A. Easily identified by metal 10 bolt short front cover similar to 5.7L.
B. Some nQn-balance shaft engines were produced without a manual fuel pump. This engine will fit either application with a fuel pump cover if manual fuel pump is not needed. C. All 12 intake manifold bolts are at 90 degree angle to cylinder head machined surface. more
1999- 2002 864256A1
Balance shaft, no mechanical fuel pump, roller camshaft, one piece rear seal, "Vortech" cylinder heads with roller rocker arm valve train.
A. Vortech heads are easily identified by only 2 bolts per corner of intake manifold for a total of 8.
B. The cylinder head actually went to the "roller rocker arm" in 2000. Mercury Remanufacturing has elected to change coverage to coincide with the 1998/1999 crankshaft change as the customer would have to change flywheels to coincide with the crankshaft used. The 1999 customers will actually get a product improvement with the roller rocker arms and will not have to make any changes to their current parts.
C. The crankshaft has a 0.123" shorter rear flange and larger pilot bushing than previous versions.
D. Plastic 6 bolt front cover.
1986 & Earlier
A. All 12 of the intake manifold bolts are installed at a 90-degree angle to the block.
B. The valve cover bolts are installed at the perimeter of the head.
C. Crankshafts utilize a 2-piece rear-main seal.
D. These blocks are machined to operate a mechanical fuel pump.
Note: In 1986 there was a limited production run with a one-piece rear-main seal, perimeter valve-cover bolts, and 90-degree bolt pattern for the intake manifold.
Over the years there have been several changes to the GM 5.O-Liter and 5.7-Liter engine blocks. Often making it difficult to positively identify which version a technician is working on, and the appropriate parts required to complete appropriate service repairs. Hopefully, this will help to take some of the mystery out of the identification process.
1987 thru 19951
A. 8 of the 12 intake manifold bolts are installed at a 90-degree angle to the block. The other 4 bolts are installed at a 72-degree angle.
B. The valve cover bolts are install in the center of the head.
C. Crankshafts utilize a 1-piece rear-main seal.
D. These blocks are machined to operate a mechanical fuel pump.
Note: During 1996 and 1997 the 3S0-Magnum (carb) and a limited production of the S.7Liter EFI throttle body utilized this (non-Gen+) designed roller-cam engine.
1987 thru 19951
A. 8 of the 12 intake manifold bolts are installed at a 90-degree angle to the block. The other 4 bolts are installed at a 72-degree angle.
B. The valve cover bolts are install in the center of the head.
C. Crankshafts utilize a 1-piece rear-main seal.
D. These blocks are machined to operate a mechanical fuel pump.
Note: During 1996 and 1997 the 3S0-Magnum (carb) and a limited production of the S.7Liter EFI throttle body utilized this (non-Gen+) designed roller-cam engine.