DIY: TB Coolant Delete

miguez · 06-19-2009, 07:25 AM

Quote:

Originally Posted by wstar

I donno, in.the.dark may actually be correct on this. I guess it depends on exactly how the mix is calculated by the ECU? I don't know enough to say for sure. But he's right that if you appreciably cooled the air post-MAS, the MAS would see a higher flow volume of the hotter air. Whether that makes everything equivalent in terms of what the MAS measures and the ECU calculates is what I'm unsure of.

I don't think the cooling of air at the throttle body would increase the air flow in the intake. The air flow is dictated by the engine suction, which is based on volume, not density.

wstar · 06-19-2009, 11:51 AM

Quote:

Originally Posted by miguez

I don't think the cooling of air at the throttle body would increase the air flow in the intake. The air flow is dictated by the engine suction, which is based on volume, not density.

The same mass of air, when cooled, consumes less volume as the density increases. It's all related.

BillyGoatGag · 07-10-2009, 02:07 AM

I did this same mod on my Z32, but I don't think I would do it on my Z34. I had the engine apart and wanted to minimize hosing and complications in the bay - the bay that has one of the worst reputations in the world. The engine (I mistyped coolant here) is approximately the same temperature as the coolant inside of it. Therefore, the metal TB is roughly the same temp by means of the aluminum heads or the coolant itself. Sure, I certainly think it will take longer for them to warm up without the routing, but running on a cold engine is frowned upon anyway.

- Clay

Edit: 090711 0725 GMT

wstar · 07-10-2009, 01:00 PM

Sounds about right. I still prefer having the hoses gone. Maybe someone will do some insulator type thing eventually for the intake manifold and throttle bodies, to keep them from sucking up so much direct heat from the engine metal.

magisky · 02-01-2010, 09:23 PM

Interesting concept. I am still undecided, but the work seems easy enough.

I do find the idea of adding a cold charge to the opening a nice one up on the mod. All though it depends on how exactly the ECM calculates injector pulse with. Most modern cars rely more heavily on the up stream 02 sensor to calculate and adjust the a/f ratio. I'm pretty sure even a real cold blast would not change to ratio beyond normal engine rich lean switching for catalyst efficiency. But could be good for a little extra pick me up. I think every 10 degrees is good for 1% HP increase.

CERBERUSlucid · 01-27-2011, 04:41 PM

Im not doing the delete but I am swapping all the hoses out to red silicone hoses and for the GOD DAM LIFE OF ME! I cant get the last hose that connects the the back of the engine!!!!!! GRRRrrrrr!

Doing this all now as imm typing this looking for any pointers! HELP

CERBERUSlucid · 01-27-2011, 09:15 PM

ˆ YEEESSSSSSS!!! After a whole day! I have done it!!!

Colnajoe · 09-22-2012, 08:05 PM

I just put a bypass valve on the inlet hose to the TB. Hot weather, shut it down so antifreeze won't flow around TB. Cold weather, turn the lever and open up the flow. Did This on my Titan years ago.

Kingbaby · 01-25-2013, 09:31 PM

thanks for the write up...

took mines off for cleaning and posed the question which this thread answer perfectly!

roy'sz · 02-03-2013, 02:37 AM

Im wondering if nissan designed that so that the engine coolant would have a sedond means of cooling. Have you noticed any increase in temp yet?

wstar · 02-03-2013, 06:21 AM

It wouldn't be significant enough for that to be a design consideration really. It's hardly even enough flow/surface to be significant in the other direction.

DEpointfive0 · 02-03-2013, 01:20 PM

Quote:

Originally Posted by wstar

It wouldn't be significant enough for that to be a design consideration really. It's hardly even enough flow/surface to be significant in the other direction.

This was put on for places like Canada and Antarctica, lol
It keeps the throttle bodies from freezing, that's about it

kk370 · 02-23-2013, 10:29 PM

what a amazing sharing,,,But too hard for me to do so

MR.nismo · 03-16-2013, 06:28 AM

Bump! I just want to keep this thread in the up pages up front so i can find it soon. I will be doing this within the next days

Nut_N_Much · 04-23-2013, 03:09 PM

Thanks bro for posting this DIY in 09, and thanks to the forum for keeping it alive.. Just did it... Much easier when you tell some one how to do it and watch

...

Nut_N_Much Journal

Thanks again WSTAR mad scientist

..

07-10-2009, 02:07 AM	#18 (permalink)
BillyGoatGag Base Member Join Date: Jul 2009 Location: Trier, Germany Posts: 31 Drives: 90 Z32 TT Rep Power: 15	I did this same mod on my Z32, but I don't think I would do it on my Z34. I had the engine apart and wanted to minimize hosing and complications in the bay - the bay that has one of the worst reputations in the world. The engine (I mistyped coolant here) is approximately the same temperature as the coolant inside of it. Therefore, the metal TB is roughly the same temp by means of the aluminum heads or the coolant itself. Sure, I certainly think it will take longer for them to warm up without the routing, but running on a cold engine is frowned upon anyway. - Clay Edit: 090711 0725 GMT Last edited by BillyGoatGag; 07-11-2009 at 01:24 AM.

07-10-2009, 01:00 PM	#19 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	Sounds about right. I still prefer having the hoses gone. Maybe someone will do some insulator type thing eventually for the intake manifold and throttle bodies, to keep them from sucking up so much direct heat from the engine metal. __________________ 7AT Track Car! Journal thread / Car setup details

02-01-2010, 09:23 PM	#20 (permalink)
magisky Base Member Join Date: Jan 2010 Location: Houston Tx Posts: 18 Drives: 09 370z touring 6sp Rep Power: 15	Interesting concept. I am still undecided, but the work seems easy enough. I do find the idea of adding a cold charge to the opening a nice one up on the mod. All though it depends on how exactly the ECM calculates injector pulse with. Most modern cars rely more heavily on the up stream 02 sensor to calculate and adjust the a/f ratio. I'm pretty sure even a real cold blast would not change to ratio beyond normal engine rich lean switching for catalyst efficiency. But could be good for a little extra pick me up. I think every 10 degrees is good for 1% HP increase. __________________ http://www.the370z.com/images/smilies/iagree.gif

01-27-2011, 04:41 PM	#21 (permalink)
CERBERUSlucid Base Member Join Date: Oct 2010 Location: 808MauiHIghST. \| SoCal Posts: 246 Drives: 40th Anniversary 370 Rep Power: 14	Im not doing the delete but I am swapping all the hoses out to red silicone hoses and for the GOD DAM LIFE OF ME! I cant get the last hose that connects the the back of the engine!!!!!! GRRRrrrrr! Doing this all now as imm typing this looking for any pointers! HELP __________________ HP is how fast you hit the wall… TQ is how much of the wall you take with you

01-27-2011, 09:15 PM	#22 (permalink)
CERBERUSlucid Base Member Join Date: Oct 2010 Location: 808MauiHIghST. \| SoCal Posts: 246 Drives: 40th Anniversary 370 Rep Power: 14	ˆ YEEESSSSSSS!!! After a whole day! I have done it!!! __________________ HP is how fast you hit the wall… TQ is how much of the wall you take with you

09-22-2012, 08:05 PM	#23 (permalink)
Colnajoe Base Member Join Date: Aug 2012 Location: Joliet, IL Posts: 32 Drives: 2013 sport touring Rep Power: 12	I just put a bypass valve on the inlet hose to the TB. Hot weather, shut it down so antifreeze won't flow around TB. Cold weather, turn the lever and open up the flow. Did This on my Titan years ago.

02-03-2013, 02:37 AM	#25 (permalink)
roy'sz A True Z Fanatic Join Date: Aug 2011 Location: palmdale, ca Posts: 1,299 Drives: 2010 nissan 370z Rep Power: 15	Im wondering if nissan designed that so that the engine coolant would have a sedond means of cooling. Have you noticed any increase in temp yet? __________________ https://www.youtube.com/watch?v=RtvG...data_playerARK HFC'S-ARK Grip-Stillen G3-M370-UPREV-Kinetix upper control arm-WC Latheworks-Stage2 Bad@$$ Driver(318whp/268tq)-

02-03-2013, 06:21 AM	#26 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	It wouldn't be significant enough for that to be a design consideration really. It's hardly even enough flow/surface to be significant in the other direction. DEpointfive0 likes this. __________________ 7AT Track Car! Journal thread / Car setup details

02-23-2013, 10:29 PM	#28 (permalink)
kk370 Base Member Join Date: Aug 2011 Location: taiwan Posts: 33 Drives: 09-370z-white-a7 Rep Power: 13	what a amazing sharing,,,But too hard for me to do so

03-16-2013, 06:28 AM	#29 (permalink)
MR.nismo Enthusiast Member Join Date: Nov 2011 Location: Hackensack, NJ Age: 50 Posts: 373 Drives: 2014 Nismo Gun Metal Rep Power: 13	Bump! I just want to keep this thread in the up pages up front so i can find it soon. I will be doing this within the next days __________________ Sarcasm and Orgasm are about the same thing. One is good....the other is better.

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