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greddy oil pan with GTM TT kit

Does anyone know if this will work with the GTM kit? http://www.the370z.com/diy-section-d...ng-option.html I don't really like the idea of drilling the upper pan and was considering this over a spacer

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Old 02-23-2012, 05:32 PM   #1 (permalink)
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Default greddy oil pan with GTM TT kit

Does anyone know if this will work with the GTM kit?

DIY: Greddy Turbo Aluminum Oil Pan as an additional oil cooling option

I don't really like the idea of drilling the upper pan and was considering this over a spacer since it doesn't sit lower than stock. My only concern is if the wings will clear the intercooler piping. Does anyone have any pictures of the GTM TT piping near the oil pan?
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Old 02-24-2012, 01:19 AM   #2 (permalink)
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The #1 reason the GTM kit uses the upper pan is for the proper drain back back from the turbo oil returns. Too low of a drain and the oil can back up and cause smoking issues.
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Old 02-24-2012, 08:53 AM   #3 (permalink)
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Originally Posted by Seb@SZ View Post
The #1 reason the GTM kit uses the upper pan is for the proper drain back back from the turbo oil returns. Too low of a drain and the oil can back up and cause smoking issues.
If the return has a proper unrestricted path it's not an issue, this pan is used in greddys kit for the oil returns and people run the AAM spacer with the GTM kit without issue.

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Old 02-24-2012, 09:24 AM   #4 (permalink)
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I am interested on this as well.
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Old 02-24-2012, 09:49 AM   #5 (permalink)
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Originally Posted by Seb@SZ View Post
The #1 reason the GTM kit uses the upper pan is for the proper drain back back from the turbo oil returns. Too low of a drain and the oil can back up and cause smoking issues.
i remember reading a post from GTM about this. i think Seb is right.
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Old 02-24-2012, 02:51 PM   #6 (permalink)
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Use proper size oil return lines and it doesnt matter what level the hose is connected at, it matters where the turbo drain outlet on the turbo itself sits compared to the oil level.

Its simple physics, the fluid will level itself out, so long as the hose is large enough to not cause any restriction that slows the fluids ability to level off.

There are turbo kits that drain the turbo oil back into the oil drain plug.

Also, I have my turbos draining into the Greddy oil pan. 10,000 miles later, no issues.
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Old 02-24-2012, 03:50 PM   #7 (permalink)
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Use proper size oil return lines and it doesnt matter what level the hose is connected at, it matters where the turbo drain outlet on the turbo itself sits compared to the oil level.

Its simple physics, the fluid will level itself out, so long as the hose is large enough to not cause any restriction that slows the fluids ability to level off.

There are turbo kits that drain the turbo oil back into the oil drain plug.

Also, I have my turbos draining into the Greddy oil pan. 10,000 miles later, no issues.
Not exactly, Oil drainage on a ball bearing turbo is a lot more critical then a journal bearing one, Every factory turbo car out there have the oil lines much higher then the oil level line. Also you are forgetting the positive crank case pressure in the oil pan that could vary form one engine to the other .

Another thing you have to remember, is that the oil coming out of the turbo is not a nice liquid. It just went through a blender and comes out very frothy and aerated. So, it does not flow very well nor does it reintegrate with the liquid oil in the pan as easily. That is another reason why it is so critical that the oil return is higher than the oil level in the pan.

We had customer that did not drill the oil pan and just added a spacer without any issues . the best way is to have the oil return as high as possible . Adding the oil pan is not a bad idea to increase oil capacity witch will help improve oil temp .


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Old 02-24-2012, 04:04 PM   #8 (permalink)
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So we could use the Greddy pan but keep the GTM oil line config?
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Old 02-24-2012, 04:14 PM   #9 (permalink)
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So we could use the Greddy pan but keep the GTM oil line config?
Yes and yes

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Old 02-24-2012, 04:26 PM   #10 (permalink)
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thank you Sam.
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Old 02-24-2012, 08:21 PM   #11 (permalink)
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Where can we buy greddy oil pan? How much larger is it ?
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Old 02-25-2012, 04:16 AM   #12 (permalink)
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Where can we buy greddy oil pan? How much larger is it ?
We do carry them, Here is the link GTM Motorsports*::*ENGINE EXTERNALS*::*Greddy High Capacity Aluminum Oil Pan Nissan VQ35HR VQ37HR . It will take an extra quart of oil .

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Old 02-25-2012, 06:33 AM   #13 (permalink)
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So I may try running a larger pan to see how well this helps with oil cooling.. has anyone done this yet ? Ie. Just run larger oil pan to disperse the heat over an extra qt? Fi may be in the future just haven't determined reliability with FI on this car yet.. thanks for help Sam
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Old 02-25-2012, 08:09 AM   #14 (permalink)
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Not exactly, Oil drainage on a ball bearing turbo is a lot more critical then a journal bearing one, Every factory turbo car out there have the oil lines much higher then the oil level line. Also you are forgetting the positive crank case pressure in the oil pan that could vary form one engine to the other .

Another thing you have to remember, is that the oil coming out of the turbo is not a nice liquid. It just went through a blender and comes out very frothy and aerated. So, it does not flow very well nor does it reintegrate with the liquid oil in the pan as easily. That is another reason why it is so critical that the oil return is higher than the oil level in the pan.

We had customer that did not drill the oil pan and just added a spacer without any issues . the best way is to have the oil return as high as possible . Adding the oil pan is not a bad idea to increase oil capacity witch will help improve oil temp .


Sam
Sam, don't forget that PVC pressure will be found throughout the entire crankcase, all the way to the valve covers, so the PVC pressure is irrelevant to how high you return oil.

Larger turbo oil returns lines are used on turbo cars to make sure that the turbo oil systems pressure differential occurs at the turbo. Turbo oil seals will mostly block air from being introduced to the oil, so frothing should be minimal.

As you mentioned your customer with the spacer.. The spacer plate is well below the oil surface level, so it is the same thing isn't it? Plenty of 350z have been doing it below the oil level for almost 10 years now, even with ball bearing turbos... I have personally done it as directed in other turbo systems, although hesitant at first myself, but after more thought and experience I have not had it cause any issues for me... So I have no hesitation to doing it again when it makes sense.

Have you had a project that was burning oil until you raised the oil returns?
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Old 03-01-2012, 01:14 AM   #15 (permalink)
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I think the drain location in this particular case is a good, better, best situation. With the right turbo big enough drain line and X number of other factors going right plugging a tube into the factory drain plug location may be good enough. Mounting it higher up with a more direct gravity feed like in the Greddy pan is certainly a better idea with a few clear advantages, but the best way to go is above the oil line, but not so high that you lose optimal drainage to shallow angle on the drain tube, or **** getting in the way of the oil on the way in(IE if you crack open an SR20DET the oil feeds back in pretty close to the oil level to avoid draining directly onto the spinning crank, also to maintain a steep drain angle from the turbo that is spaced pretty far away from the block).


Also something to consider before condemning any problems with Greddy's pan is that when the engine is operating, especially under load or high RPMs, a large majority of that oil will be filling oil passages, coating components, and dispersed in the oil cloud of the crank case. So even though the oil comes up that high on the dipstick under operation there is probably some room to play with.
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