Yes, but enough to join the 500whp club?
[/quote]

Of course! The C38-81 is more than capable and there are no restrictions on the kit itself in terms of being able to move that air.

 

SOON i will do a new thread with my update parts in this kit traying to hit near 500whp..

 

Yes, but enough to join the 500whp club?
[/quote]

Of course! The C38-81 is more than capable and there are no restrictions on the kit itself in terms of being able to move that air.
[/quote]

But how high are we going to be able to rev.. especially us AP1 guys..

 

Yes, but enough to join the 500whp club?
[/quote]

Of course! The C38-81 is more than capable and there are no restrictions on the kit itself in terms of being able to move that air.
[/quote]




Yes, but enough to join the 500whp club?
[/quote]

Of course! The C38-81 is more than capable and there are no restrictions on the kit itself in terms of being able to move that air.
[/quote]

But how high are we going to be able to rev.. especially us AP1 guys..
[/quote]

AP1 would have to come down a hair to 8900 to have that rpm reach max impeller on the blower.
That would be on a 95mm pulley as opposed to the 100 that comes with the kit out of the box.
This, however, would most likely not have the AP1 still near the 500hp benchmark. Any lower in terms of pulley size would be useless unless you wanted to over-spin the blower and keep the existing rpm just with a smaller pulley.... something obviously not recommended. AP1 with good header and exhaust, E85, 95mm pulley and a good tuner should average somewhere near the 425-435 range depending on the location, conditions, dyno, etc. <-- All the fun stuff that changes numbers from graph to graph.

The AP2 guys have a bit more room to upgrade and make the figure and these would be the ones that could get up to that figure.

 

All of the KW kits I've seen dyno'd have been above 400. I was e-tuned though so I'm probably not quite as high. I'd hope for 380-390 though. We've both got 2.2L and AP2 trans, so it will be a great comparison. This, of course, means you're committed to coming this fall
[/quote]

Honestly when I was on the dyno dynamics the tuner just tweaked a few settings but he said my etune was pretty spot on. Since that time I'm still etuning with Evans. Is that who you're using? If so, I'm pretty sure you're close to your maximum potential especially if you want a safe tune and aren't trying to squeeze every last HP out of the motor. IMHO that simply isn't worth the risk. My tune is setup with a good safety margin with priority being stock reliability and motor life.

Looking forward to the duel Andy. But if I lose I want a rematch as I'm running a long 4.0 in pulley making only 8.3psi boost.

 

Yes, but enough to join the 500whp club?
[/quote]

Of course! The C38-81 is more than capable and there are no restrictions on the kit itself in terms of being able to move that air.
[/quote]




Yes, but enough to join the 500whp club?
[/quote]

Of course! The C38-81 is more than capable and there are no restrictions on the kit itself in terms of being able to move that air.
[/quote]

But how high are we going to be able to rev.. especially us AP1 guys..
[/quote]

AP1 would have to come down a hair to 8900 to have that rpm reach max impeller on the blower.
That would be on a 95mm pulley as opposed to the 100 that comes with the kit out of the box.
This, however, would most likely not have the AP1 still near the 500hp benchmark. Any lower in terms of pulley size would be useless unless you wanted to over-spin the blower and keep the existing rpm just with a smaller pulley.... something obviously not recommended. AP1 with good header and exhaust, E85, 95mm pulley and a good tuner should average somewhere near the 425-435 range depending on the location, conditions, dyno, etc. <-- All the fun stuff that changes numbers from graph to graph.

The AP2 guys have a bit more room to upgrade and make the figure and these would be the ones that could get up to that figure.
[/quote]

I thought the AP2 only dynoed 15whp higher on the same dyno and same kit? You are saying the AP1 would require a header, exhaust would require the 95mm pulley and E85 to just reach 425-435whp? I would think the AP1 could reach that without E85 and much higher with.

 

All of the KW kits I've seen dyno'd have been above 400. I was e-tuned though so I'm probably not quite as high. I'd hope for 380-390 though. We've both got 2.2L and AP2 trans, so it will be a great comparison. This, of course, means you're committed to coming this fall
[/quote]

Honestly when I was on the dyno dynamics the tuner just tweaked a few settings but he said my etune was pretty spot on. Since that time I'm still etuning with Evans. Is that who you're using? If so, I'm pretty sure you're close to your maximum potential especially if you want a safe tune and aren't trying to squeeze every last HP out of the motor. IMHO that simply isn't worth the risk. My tune is setup with a good safety margin with priority being stock reliability and motor life.

Looking forward to the duel Andy. But if I lose I want a rematch as I'm running a long 4.0 in pulley making only 8.3psi boost.
[/quote]

Yep I also e-tuned with Evans. You know he's no longer offering that service, right? He told me we're still able to get our 4 seasonal adjustments, but I guess that's the end of it otherwise. Good to know I should be so close to ideal. I was going to pay for a dyno session once I found one close enough that I trusted and didn't have a ridiculous wait, but I haven't found the time to look into it lately. I also told him I'm more interested in reliability than squeezing out every last HP.

 

Honestly save your money on a header and just do the c38 91 upgrade which is only 300 bucks. Stock 100mm pulley on ap1 and i was pushing 16psi and 460whp. Stock header and 70mm exhaust.everytjing else stock.

 

questions:
what psi r we looking for ap2
c38-91 90mm @8000 rpm
c38-91 85mm @8000 rpm

thx.

and have u shipped out the father's day order yet, i had been waiting for almost 2 weeks now

 

From my understanding as explained to me by a vendor on here, the C38 can spin to maximum of 90K rpm. The kit comes with a 90 or 100mm pulley and has these options as upgrades from Kraftwerks:

AP1 Comes with 128mm Crank + 100mm S/C Pulley for 9150Rpm Redline @ 12.5psi
Option 1. AP1 128mm Crank + 95mm S/C Pulley for 8900Rpm Redline @ Approx 14.5Psi
Option 2. AP1 128mm Crank + 90mm S/C Pulley for 8450Rpm Redline @Approx 16.5Psi


AP2 Comes with 128mm Crank + 90mm S/C Pulley for 8200Rpm Redline @ 13psi
Option 1. AP2 128mm Crank + 85mm S/C Pulley for 8000Rpm Redline @ Approx 14.5Psi
Option 2. AP2 128mm Crank + 80mm S/C Pulley for 7600Rpm Redline @Approx 16.5Psi

Obviously there are many other atmospheric/climate factors and accuracy of boost guages that can effect what people are seeing. I'm sure if someone went with something like a pwr intercooler or after cooler on this kit, even more boost can be picked up.