Project Car Update:  The V8 Edition

By Colin Holte

A quick glance at the project car column should tell you that MotoIQ has a large (and ever expanding) roster of project vehicles.  With all these vehicles it can sometimes be tough to keep the updates flowing for each.  In some cases vehicles may have even been sold but we still keep them on the project roll for posterity.  These articles are intended to share a little bit of the details with you of where some of the project vehicles that haven't seen the spotlight in a while are at in their evolution.  In this installment we check in with the V8s:  Project Mustang V8 5.0, Project Tundra, Project V8 RX-7, and Project Lexus IS F.

Project Lexus IS F

I've been a passenger in Project IS-F back when it was still all stock during SEMA 2010. 
Even at that time it already handled, stopped, and accelerated extremely well as you might expect a 416 horsepower super sedan would do.  I vividly remember one night where we had to get Martin back to our hotel room in a hurry before he was sick that really drove home the performance and handling abilities of the car in stock form.  One of the things that Mike expressed dissatisfaction with back then was the braking/brake dusting issues.  Another thing that was notable from that ride was the stock suspension damping which while capable seemed somewhat harsh.

In our most recent installment we addressed the braking issues.  Prior to that we worked with KW & Nitto, FIGS Engineering, and Sikky Manufacturing to supply a more capable and comfortable suspension.  Power has already been enhanced with the assistance of JoeZ and K&N.  So what's next?  More power of course!  Once again we will be working with Sikky to install a set of their headers on Project IS F.  As long as California pee water doesn't mess with our Lexus' ECU too badly the addition of these headers could result in gains as high as 50 RWHP to provide a substantial boost for Mrs. Kojima during her school day lunch runs.

It's a shame you can't really see these headers once installed on an IS F as they're gorgeous.


Sikky Manufacturing IS-F headers
The headers come complete with a CNC bent dip stick tube, required gaskets and hardware, and microprocessor.


Results from Sikky's previous testing look promising.


Click here for more of Project IS F

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Wednesday, April 10, 2013 10:22 PM
Huh. The torque curve on Sikky's testing graph for the IS-F looks really strange to me. Why is there that 10 ft/lb dip in torque between 4250 and 5250 RPM? My guess is that it has something to do with the a transition in the variable valve timing. Can anyone clarify? The torque curve seems quite 'peaky' in general for a big, fat, 5.0 liter V8. Most unfavorable compared with the 5.0 "Coyote" V8 found in current GT mustangs. Perhaps the 'yota V8 is much shorter in stroke? Certainly piles on the high-RPM horsepower like it is...
Wednesday, April 10, 2013 10:26 PM
Oh, and how about Miatabusa? When is the buzzy little beast gonna see some forced induction!?
Wednesday, April 10, 2013 10:45 PM
Frankenmiata, Miatabusa, and Golf TDI.
Thursday, April 11, 2013 3:27 AM
Team America R32 GTR!
Thursday, April 11, 2013 4:45 AM
Love to see a Team America update. Also, NSX, Elise and Go Karts (though I have a feeling the first two have gone by the wayside).
Thursday, April 11, 2013 12:00 PM
"Instead of using electrons we plan to add traction the old fashioned way with mechanical grip."

Because there are no electrons in the atoms that compose a mechanical limited slip?

Thursday, April 11, 2013 5:11 PM
haha.... Maybe we should say, "Instead of using integrated circuits..." :)
Thursday, April 11, 2013 7:09 PM
@ Tom: I really did intend to write electrons rather than electronics... so I'm gonna leave it as is. But just in case you're from the Nobel Prize committee I can PM you my address. You know, so that you know where to send the check :)
Friday, April 12, 2013 9:51 AM
@ DrunkenMessiah: the automatic scaling on the Dynapack dyno's torque graph makes things look worse than they are. Comparing the values, the torque curve isn't too different than a Coyote 5.0, though the IS-F motor does make less overall torque.
Saturday, April 13, 2013 11:52 AM
Project Z32 (still exists right?) & Team America R32
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