Forged Performance: Project 370Z Race Car Build!!

Sharif@Forged · 08-06-2009, 10:17 PM

Quote:

Originally Posted by t-ray

Are you gonna stick with the stock gears?

Yes, stock gears, gearbox, and ring/pinion. The OEM Nissan stuff has proven race worth, so no plans to upgrade.

t-ray · 08-10-2009, 10:17 AM

Quote:

Originally Posted by Sharif@Forged

Yes, stock gears, gearbox, and ring/pinion. The OEM Nissan stuff has proven race worth, so no plans to upgrade.

Sorry, my question was not one of reliability, rather it was in regards to the final drive ratio. How often do you top out 5th gear? And if you ever do, can you actually accelerate in 6th gear at those speeds?

Sharif@Forged · 08-10-2009, 02:15 PM

Quote:

Originally Posted by t-ray

Sorry, my question was not one of reliability, rather it was in regards to the final drive ratio. How often do you top out 5th gear? And if you ever do, can you actually accelerate in 6th gear at those speeds?

You will definately use 6th gear at many tracks, and there is acceleration capability in 6th in problem at all.

Really depends on the track, as to how often you will use 6th gear.

Does that answer your question?

t-ray · 08-10-2009, 04:37 PM

Yes, thanks. I know it's probably a newb question, but I've never taken anything over ~120mph.

At your target hp levels, at that weight, that car is going to be major fun. But I bet if would be even moreso with 3.9's or 4.0's in there.

Sharif@Forged · 08-11-2009, 06:48 PM

Quote:

Originally Posted by t-ray

Yes, thanks. I know it's probably a newb question, but I've never taken anything over ~120mph.

At our levels, at that weight, that car is going to be major fun. But I bet if would be even moreso with 3.9's or 4.0's in there.

3.9 would be too short a gear for the power levels, and intended use for this car.

For an NA car, and more moderate power/weight setup, there may be some benifit to the 3.9 rear end.

t-ray · 08-12-2009, 10:50 AM

Quote:

Originally Posted by Sharif@Forged

3.9 would be too short a gear for the power levels, and intended use for this car.

For an NA car, and more moderate power/weight setup, there may be some benifit to the 3.9 rear end.

God I can be such a dumb **** sometimes. I meant "your" power levels, and I totally forgot that you were going to be adding boost at some point in the future. I was framing the gears question in terms of the car staying NA.

Sorry for the confusion.

So - going back to one of my earlier questions, NA, where does the car stop accelerating?

wstar · 08-12-2009, 11:05 AM

Quote:

Originally Posted by t-ray

God I can be such a dumb **** sometimes. I meant "your" power levels, and I totally forgot that you were going to be adding boost at some point in the future. I was framing the gears question in terms of the car staying NA.

Sorry for the confusion.

So - going back to one of my earlier questions, NA, where does the car stop accelerating?

Well the answer to that is "at the drag limit", and I don't think many people know that since the ECU speed limiter is below the drag limit. If I had to guess, I'd say with no wind it's probably around 170-180 mph with good bolt-ons in top gear, although it probably varies by transmission type. You'd probably loose all steering control and wreck the car before then though, at least without some aero upgrades and/or lowering to keep the nose planted harder.

Pumpkinhead · 08-18-2009, 12:40 PM

Any updates?

Sharif@Forged · 08-19-2009, 03:57 PM

Quote:

Originally Posted by Pumpkinhead

Any updates?

Here are some pics of the cage in progress. Only the main hoops have been welded into place at this point. We made an opening through the rear bracing, which will be boxed on when we are done. This is the most structurally intense cage we've done so far. Wait until you see the NASCAR door bars, seat mount, and pedal box. Should be wrapped up with all the cage related fabrication by Tues/Wed of next week. Then the fun really begins!

javol · 08-31-2009, 09:14 PM

Quote:

Originally Posted by Sharif@Forged

Yes, stock gears, gearbox, and ring/pinion. The OEM Nissan stuff has proven race worth, so no plans to upgrade.

Just a curiosity: if i want to move to a 3.9 final gear ratio on a 370Z 7AT, can I use the after-market ring-pinion couple offered for 350Z?

Central 20 for example?

Thanks!

Sharif@Forged · 09-01-2009, 09:44 AM

Quote:

Originally Posted by javol

Just a curiosity: if i want to move to a 3.9 final gear ratio on a 370Z 7AT, can I use the after-market ring-pinion couple offered for 350Z?

Central 20 for example?

Thanks!

I know that the 370Z 6MT differential is identical to the 350Z 6MT differential. so 3.9 gears for the 350Z will work on the 370Z.

However, I do not know for certain, if the 7AT 370Z uses the same differential, so I can't tell you with certainty.

wstar · 09-01-2009, 09:55 AM

Quote:

Originally Posted by Sharif@Forged

I know that the 370Z 6MT differential is identical to the 350Z 6MT differential. so 3.9 gears for the 350Z will work on the 370Z.

However, I do not know for certain, if the 7AT 370Z uses the same differential, so I can't tell you with certainty.

The service manual only indicates two kinds of diffs for the 370Z: R200 (plain) and R200V (VSLD). The only MT/AT difference it notes is the gearing (3.357 AT, 3.692 MT).

xiven · 09-01-2009, 10:08 AM

whats next?

javol · 09-01-2009, 05:28 PM

Quote:

Originally Posted by wstar

The service manual only indicates two kinds of diffs for the 370Z: R200 (plain) and R200V (VSLD). The only MT/AT difference it notes is the gearing (3.357 AT, 3.692 MT).

People at mynismo.com,

when i asked them if this Z33 product would fit my 370Z 7AT

https://www.performancenissanparts.c...ducts/?id=6135

say NOT.

What happens?

wstar · 09-02-2009, 08:41 AM

Quote:

Originally Posted by javol

People at mynismo.com,

when i asked them if this Z33 product would fit my 370Z 7AT

https://www.performancenissanparts.c...ducts/?id=6135

say NOT.

What happens?

Did you ask if it fits the 370Z 6MT? They may just be saying "no" on the 370Z in general because they're not aware they share a diff.

08-18-2009, 12:40 PM	#8 (permalink)
Pumpkinhead Base Member Join Date: May 2009 Location: AZ Posts: 8 Drives: 05 Silverstone Z Ent Rep Power: 18	Any updates? __________________ "A casual stroll through the lunatic asylum shows that faith does not prove anything." -Friedrich Nietzsche

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Forged Performance: 370Z Volk Wheel fitments are coming now!!!	Sharif@Forged	Wheels & Tires	121	06-19-2009 08:38 AM
Welcome Forged Performance	AK370Z	Forged Performance	29	04-23-2009 08:43 AM
+ Forged Performance Shift Knob (Installed) +	batman_4	Exterior & Interior	16	04-13-2009 02:28 PM
Follow the build of our Nissan GT-R Race-car	Kyle@STILLEN	STILLEN	4	02-25-2009 11:20 AM

08-10-2009, 04:37 PM	#4 (permalink)
t-ray Base Member Join Date: Apr 2009 Location: bham al Posts: 91 Drives: 05 g sedan 6mt Rep Power: 18	Yes, thanks. I know it's probably a newb question, but I've never taken anything over ~120mph. At your target hp levels, at that weight, that car is going to be major fun. But I bet if would be even moreso with 3.9's or 4.0's in there.

09-01-2009, 10:08 AM	#13 (permalink)
xiven A True Z Fanatic Join Date: Jun 2009 Location: Atlanta Age: 45 Posts: 4,128 Drives: Cookie Monster Rep Power: 296	whats next?