Im curious to see which cams everyones using on their 2.4LR's.

Why did you choose the cam and what turbo did you choose in conjuncture with it?

I have a 6466TZ going to a 2.4LR but still have undecided which cam to follow through upon. GSC S2 would be my first viable option as far as drive-ability goes.

 

2.4LR, GSC r2 cams, FP zero.
They make alot of low end power. My tuner assumed I was using GSC s3 cams because the peak power numbers. I would have picked up 10-20 whp but Id lose all the low end the the r2's provide.

 

For "smaller" turbos like the Red, the R2's are a good choice. If you're trying to maximize top-end gains, the S3's are the way to go.

I will be running the R2's on my FP Red and 2.3

 

I enjoyed the r2's on my 2.4, i used them with a 6766 and they worked great.

 

I would use the R2's, the extra lift helps with the extra displacement of the 2.4, and the duration is a touch shorter to bring the power a bit to the left, which is where you want it for a 2.4 since you're not revving it to 9500

 

I'm going with s3's on my 2.3. Like letsgetthisdone said, the extra lift from bigger cams really helps clean the cylinder out with fresh air quicker. Gotta think, 2.3/2.4 motors flow 15-20% more air. Gotta help move that somehow!

 

When it comes to valve lift, both sides of a factory head are finished by ~10.5mm. The limitations of a factory head become even more constraining with 20% more displacement. Only a competently ported head can take advantage of increased lift. By 12.5mm, my CNC intake port outflows a factory port by about 20%, which is substantial.

The GSC R2 has nominally faster ramp rates. This, not lift, is what tends to sharpen low speed and midrange performance.

 

When a cam has more lift, and a shorter duration than other cams, one would assume it has faster ramp rates...

 

So you guys are favoring the R2 < S2 on the LR?

The S3's are just overkill for my power range. I drive the car in winters as well so the cold start would be hell. Especially with an AEM EMS, the car tries its hardest not to start. 600WHP on a Mustang would be ideal. I'm just curious as to which turbo platform everyone is using with their cams for the Long Rod setups.

You can also use the same clutch/pressure plate/flywheel/etc. off of the 63 and directly swap it to the 64, correct?

 

Look at advertised duration vs. effective duration. As compared to the S3, the R2 has 6 degrees less advertised duration, but only 2 degrees less effective (@1mm) duration. That gives some indication to the ramp rates. A JUN 272 delivers very good performance not because it is a high lift set (10.8mm), but because its ramp rates deliver 235 degrees of effective duration with 272 degrees of advertised duration, similar to the GSC R2. The R2 has more lift, but again, that is a moot point with a factory head.

 

The turbo platform that best fits your particular application is the smallest one that will get you where you want to be, regardless of displacement or rod length. That decision comes first. What cam set represents the best compromise for your application comes afterward, and depends somewhat upon you other choices and expected usage.

 

Thanks for explanation Ted.

I would hate to mate a turbo too large for the engine and not get the most potential out of it relative to the wasted RPM's.

Is the T4 frame overkill on the 2.4LR for the specified power range?

 

600whp on a Mustang is T3/T4 territory.

 

2.4LR, 6466TZ.

I run S3's. If you're not building a racecar the R2 is probably well suited for you. As far as on kill, especially with the smaller turbos like blacks and reds... fml, you are asking for trouble. Ask my last 5 transmissions...

But honestly, if you are rocking a 2.4 and are hurting for "low end", you're driving the wrong car. get a V8. going from a 2.0 to a 2.3/2.4 is such a change in driveability it's insane. you can just putt away from a stop off the idle.

I do rev well over 9,000, and i'm happier doing that on the S3 than the R2, not that I have a bunch of science to to quote why I'm better off...

 

On my 2.4LR w/ mivec setup I'm running Kelford 272's w/ a GT35r. I originally had a bbk but never had the chance to try it. I'm breaking it in right now and don't really have a feel for the max potential.