CJ Motorsports VHR Intake Manifold

phunk

Exactly this. Its not that our chassis is terrible, its that its specifically terrible for application of high horsepower to the pavement. In fact, the worst I have personally experienced (excluding FWD).

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wstar

Point taken. I've just recently been reading more complaints about it over in that drag racing thread. I've had good even wear pattern at stock-ish negative camber (more negative than stock actually, just from lowering the car when putting in coilovers) using street tires (Hankook RS3) on a road-course.

But my recent experiments with running real race slicks have been showing related issues even in road-course cornering, as shown here: https://docs.google.com/file/d/0B9O2...B6N0g2NHJVU2s0 . Basically my inside rear wheel is lifting at the outer edge (front too, but not as badly, and not leading to uneven tire wear). At first I thought about reducing the camber, but the camber looks good on the other side of the car where it really counts. I think I'll have to just run stiffer springs to run slicks (well, I can probably get some help just from running stiffer damper settings, but stiffer springs are the better solution).

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7AT Track Car!
Journal thread / Car setup details

phunk

The rate of camber gain increases with control arm angle. If you raised the suspension up some, you would get less camber during the same compression travel. Obviously this would raise your center of gravity and probably cause a little more compression though. Ideally, keep the car low without effecting baseline control arm angle... raise the rear crossmember, or raise the wheel bearing in the spindle (drop spindles)

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BGTV8

This is why I use 18" wheels and 645mm diameter tyres ..... it gets the car low (lower CoG) with (relatively) standard suspension arm angles.

Since I am not FI, I can get away with 265/35 fronts and 275/35 rears (on 9.5: rims).

To make a car "work" its tyres, you need to increase spring to the stage where it becomes uncomfortable as a DD, which is "just" another compromise when tracking a DD.

You can see here at a recent event where I have loaded the left side and it is planted, but the right side front is only running on (maybe) half the tyre given the roll induced into the car (pic taken at T8 which is 6500rpm in 5th so the car is honking at that stage and the suspension stays loaded for 4-5 seconds.

Phillip Island Photography / Motorsport Photography : Team 25 - Les Pilots DAncien MG : A64H1040

I am running max of front bar and minimum rear bar with the progressive springs that came with KW3 dampers and since the PI surface is "smooth" I also run a lot of bump and rebound to keep the car stiff and work the tyres.

phunk

I hadnt considered how smaller diameter tires would lower the car without changing control arm angles

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7419sundat

So is any manifold for a 370 ever going to see fruition?

phunk

One of these days I am sure! My car has just been sitting around with big tires waiting for the weather to clear up and head to the drag strip. After that, I am done with it for the year and tearing it down to finish the intake manifold.

It just hasnt been much of a priority since the engine already appears to perform so well with the stock manifold. Engine builds have turned out to not be very popular at all for the 370z, and a stock engine probably isnt going to really benefit from an aftermarket intake manifold.

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G37sHKS

Charles, Ive been calling you the last week but no pickup. did you change your office number?

Also, reply to my text messages!

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phunk

I have been out a lot the last week. But I have no text messages from you!

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roplusbee

I can't speak for the others, but I have been waiting for an intake manifold for quite some time now. I jumped on the M370 hoping that it would be what I wanted, but that is not case. I sincerely hope you do complete your manifold project and make it available to the community!

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2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL

7419sundat

Me too it's the one mod we don't have for this it would sell well!

Rusty

Hey phunk, Do we have to show up at your shop with a 12 volt battery, jumper cables, and a quart oil to jump start your a$$?

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"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html

phunk

LOL would it really sell that well even if it was dyno proven to accomplish almost nothing on a stock engine?

Do you guys really just hate how the stock manifold looks that much??? stop looking at it

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aszyd

Everyone is just trying to make their car look the best they can and the engine bay is seriously lacking in eye candy. With the onset of polymer covers, be it for the valves, or airbox, engines have really lost their appeal. There are a few out there that aren't terrible, but most just look like crap.

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G37sHKS

Charles why you keep thinking that the stock manifold is good as it is?
There is a reason why Nissan made completely different manifold for their flagship vehicle the GT-R in material and design wise.

Im pretty sure your manifold will do a lot more than looking "cute".

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