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S30 track car / HR swap


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#21 duragg

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Posted 22 January 2016 - 07:20 PM

Jim at Turbo Toys in Tampa supplied the engine, trans, ecu, harness, running on a pallet.

He was superb.  Totally stood by everything he did. 

I think the actual wiring was done by Martin at RS Enthalpy.

 

Here is another exclusive for my Hybridz brothers:  https://youtu.be/yGfc3N5uVfg

 

And now that it runs, time to pull it all back out again again  lol


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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#22 duragg

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Posted 29 January 2016 - 05:59 AM

Well let's see... Chassis welding done to give more room for headers and front cross member for oil pan. Some brake lines moved and heat wrapped to shield from the headers. Closed off the last of the water passages and mounted a 2nd H20 temp sensor. Should have motor back in this weekend and get to drive. Exhaust fab is Tuesday and Dyno tuning at UMSTuning is Wednesday. Then compliance Dyno Saturday. I will be on track at Chuckwalla exactly 2 weeks from today.

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Brought in a ringer for welding one fitting shut.
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Removed fitting, tapped and installed CTS-2
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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#23 duragg

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Posted 08 February 2016 - 09:55 PM

VQ35HR swap into S30
Last Updated Feb 08 2016 09:52 PM


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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#24 duragg

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Posted 08 February 2016 - 09:57 PM

Its just a few extra steps at the end of a long day to post a video with relevant content to Hybridz that is grinding my gears.

Just barely worth it.


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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#25 duragg

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Posted 15 February 2016 - 09:06 AM

Love that VQ35HR.  There really isn't any RPM from 2500 to 7500 that it isn't pulling like a freight train.

I ran both races at part-throttle and all in 5th gear just to shake the car out.

 

Need to beef up the springs to prevent getting into 1st / 2nd gear and do some other tweaks before the next race.

 

 

Attached Files


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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#26 duragg

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Posted 16 February 2016 - 05:20 AM

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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#27 MREDDLE

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Posted 18 February 2016 - 08:45 PM

Very cool, glade to see it up and running. BTW what rims are you running? Size?



#28 duragg

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Posted 19 February 2016 - 07:36 AM

15x10 all around.
I have 2 sets.
No idea the brand.

Moving to 17x9 soon tho

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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#29 budgy

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Posted 19 February 2016 - 10:28 AM

How is the steering effort with those massive grippy tires? 

 

Are you essentially a stock engine just with a makeshift cold air and long tube headers? 



#30 MREDDLE

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Posted 19 February 2016 - 11:04 AM

I believe I have similar rims but, mine are three piece with mag centers.  My 280z-vq project is under way and I cant decide if I want to use the three piece 15x10 or go 17x9/9.5..... lots of options.  Anyway thank you, beautiful car.



#31 duragg

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Posted 20 February 2016 - 04:57 AM

Steering is a little stiff in the paddock but not too bad.
I've considered installing the electric assist rack... Maybe this summer.

Yes stock engine with Osiris for tuning and intake / exhaust. All the accessories are removed as well of course. We topped out at 314whp and 276 Tq I think. Next goal is to get the e-throttle control to work so we can reduce power for classing reasons to 240whp.

17x9 have more tire choices and ground clearance

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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#32 budgy

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Posted 20 February 2016 - 10:09 AM

Maybe a simple rev limit would be better if your low end torque and throttle response is still good? Or is that not going to allow enough gearing flexibility? 

 

Those are pretty solid numbers for sure! 



#33 duragg

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Posted 22 February 2016 - 11:15 AM

Hah well see the dam thing makes my target 240whp at something like 4500rpm!   In our racing class we are defined by a simple formula of Weight / Horsepower (average).  I want to be in the class with 10lbs / hp and with a 2400lb car I need to average 240hp.    NASA St3.

 

Most cars have a relatively peaky power band, making lets say 200hp at 4500, 235 and 5500, 260hp at 6500 and 235 at 7500 (imagine for grins this averages to 240hp).

But if you have another identical car that makes 240hp at 4500 and at 5500 and at 6500 and at 7500 you are maximizing the "Power under the curve" and all the guys that do this are just plain faster (not only for reasons just related to hp of course, but the idea stands).

 

And so that is where the desire for a giant engine with a de-rated power band comes from.  Just this year they made a new rule to address the advantages of this type of setup so therefore it must be a competitive advantage lol.

 

Tj


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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#34 budgy

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Posted 22 February 2016 - 06:13 PM

Yeah I imagine its a big advantage essentially because you can pretty much just leave the car in one gear and almost never need to shift. 



#35 Alex_V

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Posted 23 March 2016 - 10:28 AM

 

 

And so that is where the desire for a giant engine with a de-rated power band comes from.  Just this year they made a new rule to address the advantages of this type of setup so therefore it must be a competitive advantage lol.

 

 


Whats the rule? I've been building a Z31 track car for a while with a focus on getting my nasa license for ST classes and taking it drifting occasionally as well. 

~Alex



#36 duragg

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Posted 28 March 2016 - 06:14 AM

NASA st3 is now 10:1 pounds:hp and hp is calculated as an average vs peak.

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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#37 duragg

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Posted 08 April 2016 - 05:45 AM

I left a V-band clamp just before the muff so I could run different exhaust setups.
Made this monstrosity to be able to meet an 89db sound limit at a local track. Suspect it will be warm lol

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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#38 Leon

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Posted 09 April 2016 - 09:08 AM

We call those "Laguna pipes" 'round here.

 

818694d1395761995-need-help-looking-for-



#39 duragg

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Posted 31 August 2016 - 09:08 PM

VQ35HR rocks.

Had a few minor hickups with throttle bodies but Jim at Turbo Toys has been sending replacement parts per our agreement.

Cant say enough about them:  www.turbo-toys.com

 

What a great setup in an S30.


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1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#40 Thanh

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Posted 15 September 2016 - 01:51 PM

Big thanks to Mack at McKinney Motorsports for getting the custom headers to me.
They look WAY better than I anticipated.

I pretty much now have all the physical parts to do the final mockup then weld down the mounts, close up the X-member and finish wiring and plumbing. But Christmas... So probably running some time in January and on track in Q1 of 2016.

Headers.. Then an X pipe and single 3"? Not sure what to do yet. Since I will be taking a 300whp motor and detuning to 245whp the design of exhaust just needs to be light.

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May I ask you what those headers costs you.  They looks very well crafted.  I am in the process doing a VQ swap as well.  BTW nice project, I really like how the engine harness has a separate plug at the firewall.


Edited by Thanh, 15 September 2016 - 01:52 PM.

1973 240Z resurrection in progress 60%?




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