2.4 or 6 bolt?

[gst noob]

I pulled my 7 bolt and I'm on the fence about what I want to go back in my options are a 6 bolt bored .20 over or a 2.4 with a 4g63 head probly do the stroker thing. What are some pros and cons of each? Where's the most power and reliability? Reliable dsm . Thanks for any info guys!

 

[Cdc1221]

Best bet is a 6bolt. Itll last longer. Ive read that strokers run through bearings pretty fast. Im biased though because i like a motor that REVS

 

[RadDsm]

If 5-spd, 6 bolt 2.0L.
If auto, 6 bolt 2.4L.

This is assuming it's just a street driven car with a bit of extra oomph.

What do you want to do with the car? Drag, auto x, DD, etc...?

 

[finesse49ers]

Long rod 2.4L 4G64, that's what I did. Best all around for the street in my opinion and many others.

 

[ThunderChild]

theres no replacement for displacement, as the saying goes. you could build a 2.0 to rev to the moon, but motors dont like rpm. the less rpm you have to run to reach a particular power, the better longevity and reliability usually.

just depends on what you want. if its a street/dd car that you like to romp on, id vote for a stroker. if its gonna be a track car, or drag racer, a good 2.0 would work good. (actually id still recommend a stroker)

the off boost tq from a stroker is great, as well as the added displacement to spool the turbo faster. so theres not really a downfall. as for using bearings up faster...i havent heard this, but i havent been in the dsm scene for long.

i dont see a reason that a well balanced stroker would be harder on bearings than a 2.0. stock 4g64s are just that, stock, mass produced motors to meet an end.

when we build motors, we fix small problems and design flaws, so my thought is, build it to its full potential as far as displacement and drivability is concerned.

 

[JusMX141]

G4CS block = 2.4L 6-bolt. Win/win.

 

[WES_393]

^ If only they weren't so hard to find.

I agree with tametalon. It truly depends on what you want out of the car. If you want cheap, simple, and bulletproof, then the 2.0L 6-bolt would be a better option. If you want torque, faster spooling, and an all around better street engine, the 2.4 (or 2.3 stroker) would be the choice. But you also have to consider that a 2.4 won't be very boost friendly in stock form. Guys have successfully boosted the stock 4g64 to around 300-350hp, but you need stronger or lower compression pistons to go much farther. So while the 2.4 has a handful of benefits, they come at a price. Unlike the 2.0 6-bolt which can handle tons of power in stock form.

 

[dexterholland04]

Why not just build your 7-bolt? There is nothing wrong with that. Crankwalk is not a valid excuse in my mind; I've seen more 6-bolts crankwalk than 7-bolts personally.

 

[gst noob]

well i dont want to build my 7 bolt because i hate it its never ran gight and it over heats all the time im tired of dumping money in to a 7 bolt id much rather poor it in to a 6 bolt. i got all winter to do this build so theirs no hurry. what im wanting is a fun street car faster than alot of any thing on the road but i still wanna take it to the strip and run good times.

what do you mean by a 6 bolt 2.3 take a 6 bolt block and bore it? because iv got a 6 bolt bored to .20 over. or i want to take a block out of a spyder gs throw a turbo and a 4g63 head on and do some thing like that.

 

[WES_393]

G4CS= 2.4 6-bolt
4G64= 2.4 7-bolt
2.3 Stroker= 2.0 block + 2.4 crank + shorter pistons
2.1/2.2 Destroker= 2.4 block + 2.0 crank + longer rods

That's the basics of increasing displacement. Some will require more work than others when it comes to assembly and install. The easiest routes would be 2.0 or 2.3 stroker. The 4g64 (and G4CS) block takes some work to be properly installed including new internals. Like I said, In order to reliably and easily boost the 4g64 you will want to lower the compression ratio to 9:1 or lower. But much more info about the swap can be found by searching.

Also, if your engine had running issues before, an engine swap won't necessarily fix them. For example, if your overheating problem is from a clogged radiator and you throw in a new engine block, the new engine will still overheat. However, a complete overhaul could help with a lot of problems since your replacing many worn out parts and gaskets. So just be aware that your running issues are likely external and have nothing to do with the engine block.

 

[gst noob]

not sure whats causing the overheating iv got a huge mishimoto radiator so its deff not that and the 7 bolt was compleetly overhaulled a month ago so not sure what to think.

 

[Tyeler18]

How about rather than dumping money into trying to fix something that probably won't be fixed by replacing the engine. Why not dump a little bit of money into figuring out what is wrong with the problem. Unless throwing money out the door is what you like to do, in which case I'll leave my door open so you can send it this way.

 

[ThunderChild]

How about rather than dumping money into trying to fix something that probably won't be fixed by replacing the engine. Why not dump a little bit of money into figuring out what is wrong with the problem. Unless throwing money out the door is what you like to do, in which case I'll leave my door open so you can send it this way.

agreed.

 

[ed1380]

Best bet is a 6bolt. Itll last longer. Ive read that strokers run through bearings pretty fast. Im biased though because i like a motor that REVS

a 2.4 is not a stroker. It came stock with 2.4 liters so it's not stroked until it's more

 

[gorf]

not sure whats causing the overheating iv got a huge mishimoto radiator so its deff not that and the 7 bolt was compleetly overhaulled a month ago so not sure what to think.

fans work?
thermostat ?
Obvious but often over looked - radiator cap?
was water pump replaced?
Cooling system flush? was the block boiled out when rebuilt?

 

[gst noob]

The heads junk pulled the motor today and the head has all sorts of cracks in the water ports. Oil was also getting into the coolant but not vise versa. But that's not the point of this thred the 7 bolt is old news. 6 bolt or 2.4 out of the gs guyes!! Need advice. Leaning tward the .20 over 6 bolt more and more.

 

[ed1380]

I'd get a 7 bolt and stroke it. 7 bolt 2.4 cranks are dime a dozen.

 

[gst noob]

decided to go with a 6 bolt block bored .20 over with a 4g64 crank 1g rods and dished pistons 6mm shorter than stock pistons. for thoes who are curious.

 

[RadDsm]

So a 6 bolt block with a 7 bolt crank? Won't work.

Also I think that's the first stroker I've heard of with stock rods.

 

[ed1380]

So a 6 bolt block with a 7 bolt crank? Won't work.

Also I think that's the first stroker I've heard of with stock rods.

There are 6 bolt 2.4 motors. They're just rare. That's why I recommended a 7bolt stroker.

 

[RadDsm]

A 6 bolt 4g64?
I only know of the g4cs being the 6 bolt 2.4.

 

[miguelmcv]

A 6 bolt 4g64?
I only know of the g4cs being the 6 bolt 2.4.

2.4 7 bolt, is a 4g64.
2.4 6 bolt, is a 4g64. (G4cs)

They both are 4g64, But one is a 7 bolt and the other is a 6 bolt version,, But because of the rareless (hard to find) 2.4 6 bolt 4g64, we prefer to call it G4cs, so that way we all know that it is a 2.4 4g64 6 bolt.

So this way when we say 4g64, we know it is a 2.4 4g64 7 bolt, and when we say G4cs, we know it is a 2.4 4g64 6 bolt.

In a few words, a 2.4 4g64 6 bolt is called G4cs.

 

[ed1380]

2.4 7 bolt, is a 4g64.
2.4 6 bolt, is a 4g64. (G4cs)

They both are 4g64, But one is a 7 bolt and the other is a 6 bolt version, same as the 4g63 6 and 7 bolt, But because of the rareless (hard to find) 2.4 6 bolt 4g64, we prefer to call it G4cs, so that way we all know that it is a 2.4 4g64 6 bolt.

So this way when we say 4g64, we know it is a 2.4 4g64 7 bolt, and when we say G4cs, we know it is a 2.4 4g64 6 bolt.

In a few words, a 2.4 4g64 6 bolt is called G4cs.

RadDsm had it right.

 

[dsmBear]

6 bolt fersure

 

[1Badvan]

A 6 bolt 4g64?
I only know of the g4cs being the 6 bolt 2.4.

Some early Expo's and Summit wagons had 6 bolt motors.