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Lightweight tubular GT-R R35 front and rear subframe pictures

* * * * * 1 votes t45 subframe front tubular lightweight

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#1
albertracing

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After an extensive work for the last couple of months with our two engineers, we have now fitted and tested our prototype front Nissan GT-R R35 tubular lightweight subframes and we would like to share the results with you. We have managed to achieve -37% of mass reduction from 48.20 lbs (21.85 kg) that the bare front OEM subframe weights. 
 
The subframe is tested on 700 HP track GT-R by Ecu-Performance. After some initial track tests, the car will be fully tested in Ascari Race Resort (Spain/Europe) at Nissan VIP Trackday 2018 event in few days. 
 
We are also getting ready for testing on second car by Materialmord Shop with their 2500HP+ drag R35 that is the fastest car in Europe!
 
Our tubular subframe is made based on 3D scan of the OEM subframe, completely CAD designed, finite element method 3D tested (FEM), made from T45 piping (full name is: BS4 T45 to BS5T100 / BS6S100 ). 
 
 
That tubing is a very unique seamless carbon based steel tube which has been used in many applications in different industries. It is stronger than Co-Mo 4130 tubing, also used in motorsport. T45 is widely used in the aerospace sector in equipment such as pilots’ seats and crew’s seats due to the material's ability to withstand high G forces without snapping or splitting. This material is a Carbon Manganese based and conforms to the full Aerospace Specification laid down by British Standards. 
 
Properties for T45 are: Tensile: 700 – 900MPa, 0.2% Yield 620MPa minimum Hardness Test: 201min – 262 max HB or 210min – 275max HV. We also use S355 metal sheets in the subframe. The size of the subframe is 964,8 x 844,5 x 168,8 mm (length x width x height).
 
The subframe was completely TIG welded by hand to ensure absolute quality control with a special Lincoln Electric tig wire that matches tubing tensile and yield properties. 
 
Some other benefits other than the light weight are:
- two front anti-roll bar mounting points. Extra 20 mm to the front are the second mounting points that enable clearing space for dry oil sump piping,
- additional space for easy removal of extended oil pans 
- works with Magnus dry sump kit,
- easier servicing thanks to better access to the underbody
- mounts for OEM or aftermarket undertray.
 
Rear is also in the development now but it is still long way before it’s done.
 
We are already making couple (8) of different subframes, so this is not our first, but this was most challenging subframe to make so far. Anticipating questions, our location is Europe, Poland.
 
Hope you guys like it :)  Please share your thoughts.
 
 
WAS-300-Nissan-GT-R-GTR-R35-subframe-fro
 
WAS-300-Nissan-GT-R-GTR-R35-subframe-fro
 
WAS-300-Nissan-GT-R-GTR-R35-3d-lighweigh
 
WAS-300-Nissan-GT-R-GTR-R35-3d-lighweigh
 
WAS-300-Nissan-GT-R-GTR-R35-3d-lighweigh
 
WAS-300-Nissan-GT-R-GTR-R35-3d-lighweigh
 
 
WAS-300-Nissan-GT-R-GTR-R35-lighweight-t
 
Nissan-GT-R-GTR-R35-lighweight-tubular-s
 
Nissan-GT-R-GTR-R35-lighweight-tubular-s
 
Nissan-GT-R-GTR-R35-lighweight-tubular-s
 
Nissan-GT-R-GTR-R35-lighweight-tubular-s
 
IMG_20180310_112153.jpg
 
 
post-13918-0-76003700-1525022429-1.jpeg
 
IMG_6612-1.jpg

Edited by albertracing, 08 November 2018 - 03:42 AM.

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#2
Mattson

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Price? Possible to order it? 



#3
shawnhayes

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Damn sure is pretty.

 

Shawn



#4
thehelix112

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Cooool!

#5
Tim

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Wow
post-273-0-31146100-1438786356.jpg

#6
7racer

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Count me in

In7anity!!


#7
mikelmarion

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finally!  so what is the weight of the final price vs stock?



#8
shawnhayes

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Can I do this job in my own garage safely?

 

Shawn


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#9
albertracing

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finally!  so what is the weight of the final price vs stock?

 

It is 17.2 lbs savings vs stock (35% reduction)

 

 

Can I do this job in my own garage safely?

 

Shawn

 

 

It depends on how good mechanic you are. But we recommend professional workshop for the install.

 


Edited by albertracing, 12 March 2018 - 02:06 PM.

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#10
earico

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Can I do this job in my own garage safely?

 

Shawn

 

Wouldn't be that hard to do lifted off the ground and with a engine support bar across the strut towers.


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2012 BE GT-R - T1R 3.8L / PTE-5858s / Drag 1000
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#11
Dv8

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Looks great. I'd say about a 5hr job max with a lift and a engine support. Pricing TBD?

 

~Dv8


Edited by Dv8, 12 March 2018 - 05:11 PM.

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 4/28/18 8.81 @163MPH 

Changes Coming| NHRA Licenced GTR 8.5

 

 

 

 

 

 

 

 


#12
shawnhayes

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Wouldn't be that hard to do lifted off the ground and with a engine support bar across the strut towers.

 

This is what I figured as well.

 

Any known recommended anchor points from above?  I could check the service manual, but I wanna see what you guys have.

 

Shawn



#13
shawnhayes

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Looks great. I'd say about a 5hr job max with a lift and a engine support. Pricing TBD?

 

~Dv8

 

I agree.  About seven hours with the engine support across the towers and high lift jacks I figure.

 

Shawn



#14
shawnhayes

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It is 17.2 lbs savings vs stock (35% reduction)

 

 

 

It depends on how good mechanic you are. But we recommend professional workshop for the install.

 

I'm going to go out on a limb here...

 

Who cares about the 17.2 lbs savings?  To me, this looks like a piece with more structural stability and rigidity than the stock piece.  I could be TOTALLY wrong, but my engineering and science background says otherwise.

 

Any other science heads wanna weigh in on this?  Maybe I'm off base, but I don't know.

 

Shawn


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#15
mikelmarion

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if that is the case, what benefit would that provide? I think most wanted the weight saving. Shocked to see it isn't more.  But i thought the stock peice wi more than 50lbs



#16
earico

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This is what I figured as well.

 

Any known recommended anchor points from above?  I could check the service manual, but I wanna see what you guys have.

 

Shawn

 

I just took my long block to Tony last month for a refresh. I used some bolts in the holes on the heads to cherry pick it off my subframe. The holes are at the top of the heads right under the valve covers and both heads have them.


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fn4rpl.jpg
2012 BE GT-R - T1R 3.8L / PTE-5858s / Drag 1000
Ecutek tuned by Bill @ SIR

 


#17
Dv8

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This is what I figured as well.

 

Any known recommended anchor points from above?  I could check the service manual, but I wanna see what you guys have.

 

Shawn

I've used the strut towers as the cross anchor for the support beam. I use 2 ratchet straps snaked through the timing cover window into the knock sensor valley and out-up the back latched around the support. Long and wide enough one could loop-strap the motor North/South latching around the support.

 

~Dv8


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 4/28/18 8.81 @163MPH 

Changes Coming| NHRA Licenced GTR 8.5

 

 

 

 

 

 

 

 


#18
shawnhayes

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if that is the case, what benefit would that provide? I think most wanted the weight saving. Shocked to see it isn't more.  But i thought the stock peice wi more than 50lbs

 

Any cars structural rigidity improvement can improve handling.

 

We used to add extra bars to improve handling.  These look like just better bars.

 

Shawn


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#19
shawnhayes

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Like this:

 

evo_x_10_under_floor_chassis_brace.jpg

 

Believe it or not, that car handled MUCH better than stock.

 

Shawn


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#20
shawnhayes

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I just took my long block to Tony last month for a refresh. I used some bolts in the holes on the heads to cherry pick it off my subframe. The holes are at the top of the heads right under the valve covers and both heads have them.

 

 

I've used the strut towers as the cross anchor for the support beam. I use 2 ratchet straps snaked through the timing cover window into the knock sensor valley and out-up the back latched around the support. Long and wide enough one could loop-strap the motor North/South latching around the support.

 

~Dv8

 

Thank you brothers.  I'll think this piece over if I can see the price.  Also will get the track edition DBA lower control arms from the 2014 if I get this too.

 

Shawn


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