Jackson Racing C38 vs C30 with stock pulleys

[stlgrym3]

I’m ready to go with JRSC, question now is C30 or C38. I’m fully aware what the differences are between the two. For $100 more I’d be dumb not to pick the C38 with higher power potentials down the road. However, I do plan on keeping stock pulleys and running on 91 gas for the foreseeable future.

My main concern with getting C38 now is Jackson Racing does not have CARB tune for 2017+ model yet, therefore I’d have to stick with my Tomei EL header and go with Delicious Tuning Flash and Go tune. Has anyone here with C38 , stock pulleys and a non-factory tune? How do you like it?

Also I’ve heard C30 does provide more power down low whereas C38 has more room for power in upper RPMs, is the difference quite big and obvious down low?

[CSG Mike]

Unless you plan on a built motor and the RS pulley upgrade, the potential of the larger supercharger is largely meaningless.

It's like getting a giant turbocharger "for the potential", knowing you realistically would probably never use it.

Do you see yourself building an engine in the next 2 years or so?

[stlgrym3]

No I do not planning on rebuild motor. However, I do planning on getting ACE header, HBP and flex fuel kit down the road. Can stock motor handle C38’s potential with those supporting mods?

[CSG Mike]

Can it? Yes. How long? Luck of the draw.

Again, unless you're getting the RS pulley, you are not exploiting the potential of the C38.

[stlgrym3]

What’s RS pulley?

[CSG Mike]

Originally Posted by stlgrym3

What’s RS pulley?

The "super high boost" pulley a C30 cannot use.

[stlgrym3]

Now what are the cons of getting C38 over C30 if I do not planning on exploring the full potentials of C38? Other than the $100 premium of course.

[twag4]

Originally Posted by stlgrym3

No I do not planning on rebuild motor. However, I do planning on getting ACE header, HBP and flex fuel kit down the road. Can stock motor handle C38’s potential with those supporting mods?

I’m gonna rock the boat and say no. I was on c30 with standard pulley, ace type a350, and flexfuel, and a rod broke at probably 2500rpm. It was massive catastrophic damage. Only one head blank could be salvaged. I didn’t routinely redline the engine. The rods and apparently rod bearings are the weak links in this engine. My rod bearings were not damaged at all.

[JimmyMac]

What's the whp potential of a C30? I'm currently building a motor with stronger rods for insurance if I decide to go boosted later down the road (maybe next year). I'd only be looking for up to 300whp. C30 handle that with ease?

[twag4]

Originally Posted by JimmyMac

What's the whp potential of a C30? I'm currently building a motor with stronger rods for insurance if I decide to go boosted later down the road (maybe next year). I'd only be looking for up to 300whp. C30 handle that with ease?

If you can do flex fuel, you’ll exceed that. It’ll be less by some margin if you do 93 octane and a good header. I was a spec over 280 with that setup on 93 octane and ace header

[Irace86.2.0]

Originally Posted by twag4

If you can do flex fuel, you’ll exceed that. It’ll be less by some margin if you do 93 octane and a good header. I was a spec over 280 with that setup on 93 octane and ace header

What or who was the tuner?

[Irace86.2.0]

Originally Posted by stlgrym3

Now what are the cons of getting C38 over C30 if I do not planning on exploring the full potentials of C38? Other than the $100 premium of course.

Maybe weight. Maybe less efficiency.

[twag4]

Originally Posted by Irace86.2.0

What or who was the tuner?

Delicious on ecutek

[majixmatrix]

Originally Posted by twag4

Delicious on ecutek

Dang, seems to be pretty hit or miss for some people. I have a friend who has the high boost pulley on a C38 and flexfuel who's been dailying it for months with no problems!! I can't trust off the shelf tunes haha but Delicious makes good stuff.