GTM Performance Engineering VQ45VHR-Our Journey to The 1000 HP and Beyond
Joined: Feb 2008
Posts: 13,406
Likes: 130
From: MexiCali dodging potholes
If you actually ever drive the car hard at the daily driver power levels, please be sure to report back when it blows up.
Why does the Z community have such issues with shops... I think there are maybe a handful of places in the US that haven't seen significant issues. This was a sad thread to read because of that.
Okay I get alot of what is being said here but my question is this and its rather simple...If you have no personal dealings with GTM i.e. you never bought a motor from them why are you cluttering up this thread. I get that everyone "thinks" that they are doing the right thing for the community but we are just going thru the same silly bs... I am thinking about making a section in the FI forums where you can post your proven facts about your build or issues you've had. This forum will not be rumors assumptions or speculation... Because as with FI its been a'lot of rumors assumptions and speculation.
No one has done my rebuild yet to answer your question. Futhermore there was no bias in my post just how I feel about the situation. You have had issues therefore you would be in the section I have spoke about. That was my point to my whole statement.
Banned
Joined: Jun 2007
Posts: 1,342
Likes: 0
From: under the hood
when i think of places to participate in performance discussions there is not a place i can think of that gives this level of integrity to the sport.No where else can you find such information about companies and products available.
The other members here should be just as proud as i am to share in my350z and it's sponsors.Don't take my word for it,just look at the threads that spill out of this well oiled machine and you can see the judgment that went into every post.
with over 13,000 views on this thread alone shows the dedication and ability for members to absorb the most complicated of topics.
I look foward to following this build to completion and can't wait for the final results.I'm sure gtm and the customer will get everything they deserve.
The other members here should be just as proud as i am to share in my350z and it's sponsors.Don't take my word for it,just look at the threads that spill out of this well oiled machine and you can see the judgment that went into every post.
with over 13,000 views on this thread alone shows the dedication and ability for members to absorb the most complicated of topics.
I look foward to following this build to completion and can't wait for the final results.I'm sure gtm and the customer will get everything they deserve.
I'm the one that cleaned up the thread. I saw no need for all the off topic banter, personal attacks, etc that was being posted. Let's try to keep the thread on topic, please.
my350z history has repeated itself AGAIN...
So since it was considered OT, will a separate thread be allowed to discuss the larger issues at hand???
Thread Starter
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Joined: Sep 2006
Posts: 688
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From: California
Here's an update on our intake manifold. We've been working with a Rapid Prototyping company, and it's taking a little longer than we anticipated. Nevertheless, here are some images generated from the scanning software. One of the biggest advantages of this process is the ability to verify air flow through the intake and make any necessary changes to the design in CAD to eliminate any restrictions. The design has been finalized and is being "grown" as we speak. According to the company we are working with, we should have the prototype in hand next week. At that time, we will be test fitting the lower manifold in conjunction with the GT-R upper intake plenum and performing some initial dyno testing to verify the design.
Some of you familiar with rapid prototyping have suggested growing the part in titanium. Unfortunately, this part is physically too large to print using an iterative metal laser sintering process. Not to mention that even if their "printer" was large enough, it would take over a month just to print! Given that people want to see this car finished, we found the timeframe unacceptable. Therefore, we will be using a new type of high temperature plastic developed to be tested in harsh operating conditions (such as a forced induction manifold). Although we were skeptical of using plastic on this part of the engine, the material specifications convinced us that it is well within operating parameters.
We have several cars that we will be testing this manifold setup on: a stock 370z (to see what effect this manifold has on an NA application), a GTM supercharged 370z, and of course the White Dragon. Given that we can make adjustments to things like runner diameter and length in CAD, we can fine tune the performance to suit the particular application.
Also, it has been our experience that the factory HR/VHR upper intake plenum starts having issues with over 15psi of boost and 700whp (afterall it was designed for an NA application). Using our lower intake plenum in conjunction with the GT-R upper intake plenum will allow for more boost and more power.
Enough technobabble, here are some pics:
Some of you familiar with rapid prototyping have suggested growing the part in titanium. Unfortunately, this part is physically too large to print using an iterative metal laser sintering process. Not to mention that even if their "printer" was large enough, it would take over a month just to print! Given that people want to see this car finished, we found the timeframe unacceptable. Therefore, we will be using a new type of high temperature plastic developed to be tested in harsh operating conditions (such as a forced induction manifold). Although we were skeptical of using plastic on this part of the engine, the material specifications convinced us that it is well within operating parameters.
We have several cars that we will be testing this manifold setup on: a stock 370z (to see what effect this manifold has on an NA application), a GTM supercharged 370z, and of course the White Dragon. Given that we can make adjustments to things like runner diameter and length in CAD, we can fine tune the performance to suit the particular application.
Also, it has been our experience that the factory HR/VHR upper intake plenum starts having issues with over 15psi of boost and 700whp (afterall it was designed for an NA application). Using our lower intake plenum in conjunction with the GT-R upper intake plenum will allow for more boost and more power.
Enough technobabble, here are some pics:
Banned
Joined: Jun 2007
Posts: 1,342
Likes: 0
From: under the hood
Here's an update on our intake manifold. We've been working with a Rapid Prototyping company, and it's taking a little longer than we anticipated. Nevertheless, here are some images generated from the scanning software. One of the biggest advantages of this process is the ability to verify air flow through the intake and make any necessary changes to the design in CAD to eliminate any restrictions. The design has been finalized and is being "grown" as we speak. According to the company we are working with, we should have the prototype in hand next week. At that time, we will be test fitting the lower manifold in conjunction with the GT-R upper intake plenum and performing some initial dyno testing to verify the design.
Some of you familiar with rapid prototyping have suggested growing the part in titanium. Unfortunately, this part is physically too large to print using an iterative metal laser sintering process. Not to mention that even if their "printer" was large enough, it would take over a month just to print! Given that people want to see this car finished, we found the timeframe unacceptable. Therefore, we will be using a new type of high temperature plastic developed to be tested in harsh operating conditions (such as a forced induction manifold). Although we were skeptical of using plastic on this part of the engine, the material specifications convinced us that it is well within operating parameters.
We have several cars that we will be testing this manifold setup on: a stock 370z (to see what effect this manifold has on an NA application), a GTM supercharged 370z, and of course the White Dragon. Given that we can make adjustments to things like runner diameter and length in CAD, we can fine tune the performance to suit the particular application.
Also, it has been our experience that the factory HR/VHR upper intake plenum starts having issues with over 15psi of boost and 700whp (afterall it was designed for an NA application). Using our lower intake plenum in conjunction with the GT-R upper intake plenum will allow for more boost and more power.
Enough technobabble, here are some pics:
Some of you familiar with rapid prototyping have suggested growing the part in titanium. Unfortunately, this part is physically too large to print using an iterative metal laser sintering process. Not to mention that even if their "printer" was large enough, it would take over a month just to print! Given that people want to see this car finished, we found the timeframe unacceptable. Therefore, we will be using a new type of high temperature plastic developed to be tested in harsh operating conditions (such as a forced induction manifold). Although we were skeptical of using plastic on this part of the engine, the material specifications convinced us that it is well within operating parameters.
We have several cars that we will be testing this manifold setup on: a stock 370z (to see what effect this manifold has on an NA application), a GTM supercharged 370z, and of course the White Dragon. Given that we can make adjustments to things like runner diameter and length in CAD, we can fine tune the performance to suit the particular application.
Also, it has been our experience that the factory HR/VHR upper intake plenum starts having issues with over 15psi of boost and 700whp (afterall it was designed for an NA application). Using our lower intake plenum in conjunction with the GT-R upper intake plenum will allow for more boost and more power.
Enough technobabble, here are some pics:
1.Just so i completely understand,you're going aluminum block,plastic lower,aluminum upper?
2.Isn't plastic that close to the core going to be problematic?
3.Is plastic the right choice for a wet manifold (methanol injection)?
O.E attempts at plastic lowers have been fraught with warping,cracking and air leaks just being naturally aspirated(and especially so with a v configuration).You probably won't listen to advise from me,but is seems as if your driving down a dead end street.
Looking foward to results
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iTrader: (7)
Joined: Sep 2006
Posts: 688
Likes: 1
From: California
I think you misunderstood what we are doing here. The plastic is merely a prototype that will allow us to make any fine tuning adjustments and ensure that we have perfect fitment. This is only a short term piece so we can finish the R&D.
The final finished product will be cast aluminum.
The final finished product will be cast aluminum.
Just a few questions....
1.Just so i completely understand,you're going aluminum block,plastic lower,aluminum upper?
2.Isn't plastic that close to the core going to be problematic?
3.Is plastic the right choice for a wet manifold (methanol injection)?
O.E attempts at plastic lowers have been fraught with warping,cracking and air leaks just being naturally aspirated(and especially so with a v configuration).You probably won't listen to advise from me,but is seems as if your driving down a dead end street.
Looking foward to results
1.Just so i completely understand,you're going aluminum block,plastic lower,aluminum upper?
2.Isn't plastic that close to the core going to be problematic?
3.Is plastic the right choice for a wet manifold (methanol injection)?
O.E attempts at plastic lowers have been fraught with warping,cracking and air leaks just being naturally aspirated(and especially so with a v configuration).You probably won't listen to advise from me,but is seems as if your driving down a dead end street.
Looking foward to results
Banned
Joined: Jun 2007
Posts: 1,342
Likes: 0
From: under the hood
I think you misunderstood what we are doing here. The plastic is merely a prototype that will allow us to make any fine tuning adjustments and ensure that we have perfect fitment. This is only a short term piece so we can finish the R&D.
The final finished product will be cast aluminum.
The final finished product will be cast aluminum.
"Therefore, we will be using a new type of high temperature plastic developed to be tested in harsh operating conditions (such as a forced induction manifold). Although we were skeptical of using plastic on this part of the engine, the material specifications convinced us that it is well within operating parameters."
Glad to hear it's only temporary.Will we have to wait for the aluminum intake before we see dyno #s or are you going to blast through the ceiling with the prototype?
Looking so foward to results
