Well I have seen lots of forums and info in how the 2.4 Twin Cam can benefit from the 2.3 Quad 4 from the most known mod the secret cams. Iam posting this thread to ask more questions on how to do it and what else can be done, and to give an insight for those that want 2 learn how to mod their inline 4 to beat those lil v-techs
Hopefully it becomes a sticky as this thread evolves with adequate info to support the mods. Please add some if you know others.
Alot of the info is not mine so i will not be taking credit for it, it is info mostly from jbody since they know a lot about the 2.3 and 2.4 engines. I just want to transfer the info to let Alero owners know that Aleros are not slow worthless family cars
Please enjoy the research and add as you wish.
(source:wikipedia.com)
The
LD9 Twin Cam was a 2.4 L Quad 4 variant with balance shafts, debuting in 1996. Bore was decreased from 92 mm to 90 mm and stroke increased from 85 mm to 94 mm for better torque, and power was increased to 150 hp (112 kW). This engine received a minor update halfway through the 1999 model year that eliminated the EGR, increased the compression ratio from 9.5:1 to 9.7:1, and switched from low impedance fuel injectors to high impedance.
Applications:
1996-2001 Chevrolet Cavalier Z24
1996-2001 Pontiac Sunfire GT
1996-2001 Pontiac Grand Am
1996-1998 Oldsmobile Achieva
1999-2001 Oldsmobile Alero
1997-1999 Chevrolet Malibu
The
High-Output 2.3 L LG0 version produced 180 hp (134 kW) from 1990 to 1992, and 175 hp (130 kW) in 1993 and 1994. Major changes included a higher volume intake manifold, and more aggressive camshafts.
Applications:
1990-1991 Oldsmobile 442
1990-1993 Chevrolet Beretta GTZ, 180 hp (134 kW)
1994 Chevrolet Beretta Z26, 170 hp (127 kW)
1989-1994 Pontiac Grand Am
1990-1991 Pontiac Grand Prix
1989-1991 Oldsmobile Cutlass Calais and Supreme
1992-1994 Oldsmobile Achieva SC
For 1995, a balance shaft-equipped version of the 2.3 L version was produced. A clever arrangement ensured a constant load on the shafts: The crank drove one shaft, which drives the second, which drives the oil pump. However, the shafts spun at twice the engine rpm, forcing the redline to be reduced from 6800 to 6500 rpm. Output was 150 hp and 150 ft·lb. This was the only Quad 4 family engine produced in 1995. This was known as a transitional year for the engine family.
Applications:
1995 Pontiac Sunfire
1995 Chevrolet Cavalier
1995 Pontiac Grand Am
1995 Oldsmobile Achieva
The W41 version was the highest-output Quad 4 at 190 hp (142 kW) in 1991 and 1992, and 185 hp (138 kW) in 1993. The additional 10hp came from longer duration cams and a different PROM.
Applications:
1991 Oldsmobile 442
1992-1993 Oldsmobile Achieva SCX
Here are some of the mods that anyone with the 2.4 Twin cam can install from a 2.3 concerning some modifications:
1. 2.3 Cams [Better Lift]
I recommend replacing the camshaft lobes and port N' polishing the head for good flow.
(source:jbody.org)1995 Cam Specs
200 degrees @ .050" with .360" lift for the intake
200 degrees @ .050" with .360" lift for the exhaust
LD2 (1990+) Cam Specs
200 degrees @ .050" with .375" lift for the intake
200 degrees @ .050" with .375" lift for the exhaust
24574239 Intake camshaft for LG0(95 2.3DOHC)
22545390 Exhaust cam for LD2(Pre-95 2.3DOHC)
(source:jbody.org from forum http://www.j-body.org/forums/read.ph...82822&t=382822
2. 2.3 oil pump
"QUOTE ge_forcez22 QUOTE"reason to get this swap is if you ever want to run safely above 5800rpm
when GM designed the engine and the 2000-2002 GM s/c kit, on the engine dyno the engine started loosing oil pressure with a stock pump. The reason being was the smaller 2.4 (compaired to the 2.3) spins too fast and cavitates (aerates, foams) the oil and cause air to flow with the oil.
You get more oil for superior pressure so get synthetic to help
Parts Needed
2.3L Pump:
Crank Gear for the pump:
Windage Tray: 22536409
Baffle Stud: 22542521 x2
Baffle Bolt: 22540299 x2
Oil Pick Assembly: 22539133
Brace: 24570677
Bolt To Screen: 11516802 x2
Nut For Brace: 22535081 x2
Bolt Flange Head: 11516061 x2
Oil Pump Bolts To Block: 14050422 x2
Locator Pins For Pump: 22531530 x2
Melling oil pump # M-136 Autozone $109.99
You will have to modify the crank and the block so for step by step instructions follow the jbody link given above.
3. 2.6L Storker
2.3 block + 2.4 crank = 2.6 stroker
I cant remember but 250HP N/A or something. Quote me if iam wrong which i think i am.
Info from the forum
http://www.j-body.org/forums/read.ph...57816&t=257816 and
http://www.j-body.org/forums/read.ph...7&t=371397&p=1
Its a lot of work but worth the while once complete, but just follow the link on the build up.
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Please add if you know any more
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