Bov location - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

cotbu · 01-17-2013, 02:59 PM

Yeah, those damn nissan engineers never get it right, if they would've gotten it right the first time... I wouldn't have had to swap an sr20 into my 240sx. And I'm constantly fixing there screw ups. :iwebsarcasm:

Mikester · 01-17-2013, 03:06 PM

Quote:

Originally Posted by Kingtal0n

BTW, I'm 41 and maybe, just MAYBE I may know a thing or two- So please feel free to go play yourself a nice game of Hide and go fuck yourself... Young one

Kingtal0n · 01-17-2013, 03:51 PM

You dont actually count the side mount as an intercooler, do you?

There is no "cold side" on an S15 OEM setup. Yall are drunk if you think that plastic plumbing is cold.

PrimeDirective · 01-17-2013, 03:57 PM

Quote:

Originally Posted by Kingtal0n

You dont actually count the side mount as an intercooler, do you?

There is no "cold side" on an S15 OEM setup. Yall are drunk if you think that plastic plumbing is cold.

LOL what. It's okay, you can admit you're wrong. My previous post's point still stands.

The GTR has a "real" intercooler that is front mounted and it still has its recirc valves on the cold side. Page EN160 in the R33 All engine manual, check it out.

Kingtal0n · 01-17-2013, 03:59 PM

Quote:

Originally Posted by Croustibat

For you guys who want hard evidence, i have a friend who took some temps measures. That is on a CA18DET, which produces less heat than an SR20, and the intercooler is nearly the same. turbo is a brand new T25, set at 15psi with supporting mods.

on a 15°C day, temp after turbo is 157°C .

OEM SMIC, IAT is 55°C after a couple of pulls. It gets worse with every pull. He stopped when hitting 75°C. 208HP torque 29mkg.

random ebay FMIC, IAT is 19° after a couple of pulls, and stays there after some more pulls. 222HP torque 31mkg. more torque and power is still there up to redline, while it goes down at 5000rpm on OEM SMIC.

Now, try that on a 30°C day and watch your pistons melt.

OEM SMIC for S13 and S14, is rubbish. It WILL heat soak, even with a stock engine and no mods, as it is made for a standard driving style. Dont use one if you drive your car hard. ever.

that and it gets covered in dirt qui often due to its position and is hard to clean, much harder than any FMIC .

A better intercooler, wether it is SMIC or FMIC, gives more power AND more reliability. I think it is the ONLY part that does that. You really should use one.

crousti says the side mount is not a good intercooler also. hmm what gives?

now I have to find a way to say that the side mount is a great intercooler, while maintaining that the plumbing remains hot on all sides.

PrimeDirective · 01-17-2013, 04:02 PM

The fuck does that have to do with BOV location? My previous point(s) still stands. So the SMIC is no good, why would nissan still put the recirc valve on the cold side versus the hot?

Kingtal0n · 01-17-2013, 04:11 PM

they did not put it on the cold side, there is no cold side. Why do you think I mentioned to measure plumbing volume? The bypass valve functions best when there is minimal plumbing volume between the compressor and it self, it has nothing to do with which "side" it is placed.

If I went outside, and removed the side mount from the S15, replacing it with a straight piece of pipe, you would not be able to tell it was gone.

But suddenly, its got no more " hot side"?
Bypass function would be relatively unaffected, since plumbing volume would not change much. If I was to, say, install a much larger intercooler and left everything else the way it was, the bypass would suddenly not work very well.

yet I never moved it from the "side" it was on, and it doesnt just spontaneously stop working. No, what happened is, plumbing volume changed dramatically.

PrimeDirective · 01-17-2013, 04:26 PM

Yes, there is a cold side. Nissan put a intercooler there so its at least meant to be a cold side sometimes.

And I think everyone here knows how easy it is to plumb recirc tubing from the hotside of a SR20 and RB20/25/26 compared to the cold side. The S13 SR20 had the recirc valve on the hotside and then Nissan moved it to the coldside or closer to the throttle body on the S14 and S15!

When I say cold side I mean close to the throttle body.

Anyways, believe what you want.

Croustibat · 01-17-2013, 04:36 PM

Quote:

Originally Posted by Kingtal0n

Want facts? Do a search. Just by appearing in this thread I have spoon fed enough. This is, and I am not joking, the 100th time this question has been answered on this forum.
Hell, search my name if you want. My name alone will hit at least 5 threads in which scientific explanations are given for why the bypass valve needs to be close to the compressor.

Your nickname appears mostly associated with the stupidest answers, and that is true since your very first post. To the point i really am wondering if it really is stupidity.

Either way you get a master trolling award. Congrats, i could not do it that well even if i wanted, you are in a class of your own

slidin40 · 01-17-2013, 04:40 PM

I'm sorry I dont realize I asked the same question months ago. I guess I never got a straight answer, so i decided to ask again. But I do thank you for your inputs and advice.

Croustibat · 01-17-2013, 04:43 PM

Quote:

Originally Posted by PrimeDirective

The fuck does that have to do with BOV location? My previous point(s) still stands. So the SMIC is no good, why would nissan still put the recirc valve on the cold side versus the hot?

I think they mostly put it where they could. Considering the effect it has...

Mine is recirced on the hot side. Why ? Because i had a bov flange welded there, and it was the simplest and cheapest to do

I do not believe the (maybe) 0.00000001ms i lose or win by putting it there makes a difference, really.

PrimeDirective · 01-17-2013, 04:49 PM

^ I agree, my car is the same way, because the plumbing was a nightmare. However, if a person asks where we can at least tell them what would be ideal and why.

slidin40 · 01-17-2013, 04:50 PM

Didn't* autocorrect

codyace · 01-17-2013, 10:53 PM

Put it in the easiest spot to recirculate. There isn't anyway for anyone to definitly or repeatably measure the best spot on these cars. Not a a single street car here will know or act any differently.

Again, put it where re circulation is easiest to route.

Croustibat · 01-18-2013, 01:47 AM

Quote:

Originally Posted by PrimeDirective

^ I agree, my car is the same way, because the plumbing was a nightmare. However, if a person asks where we can at least tell them what would be ideal and why.

The thing is no one here knows that for sure.

Quote:

Originally Posted by codyace

Put it in the easiest spot to recirculate. There isn't anyway for anyone to definitly or repeatably measure the best spot on these cars. Not a a single street car here will know or act any differently.

Again, put it where re circulation is easiest to route.

That, exactly. Maybe a drag car or something with tons of boost ...

AdamR · 01-18-2013, 02:09 AM

Quote:

Originally Posted by cotbu

Why do you keep saying shit like this, just curious. I mean you say it like it's a fact. Young impressionable minds are listening. At least encourage them to find the solution that works best for them.

Look at his posts. I think he really loves misinforming with all the pseudo-intellectual nonsense.

AdamR · 01-18-2013, 02:13 AM

Quote:

Originally Posted by Kingtal0n

they did not put it on the cold side, there is no cold side. Why do you think I mentioned to measure plumbing volume? The bypass valve functions best when there is minimal plumbing volume between the compressor and it self, it has nothing to do with which "side" it is placed.

If I went outside, and removed the side mount from the S15, replacing it with a straight piece of pipe, you would not be able to tell it was gone.

But suddenly, its got no more " hot side"?
Bypass function would be relatively unaffected, since plumbing volume would not change much. If I was to, say, install a much larger intercooler and left everything else the way it was, the bypass would suddenly not work very well.

yet I never moved it from the "side" it was on, and it doesnt just spontaneously stop working. No, what happened is, plumbing volume changed dramatically.

I am interested in why you think volume of piping on either side of the intercooler matters.

01-17-2013, 02:59 PM	#31
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 47 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	Yeah, those damn nissan engineers never get it right, if they would've gotten it right the first time... I wouldn't have had to swap an sr20 into my 240sx. And I'm constantly fixing there screw ups. :iwebsarcasm: __________________ LoverTechnologies "Half Broken Things!"

01-17-2013, 03:51 PM	#33
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,649 Trader Rating: (17) Feedback Score: 17 reviews	You dont actually count the side mount as an intercooler, do you? There is no "cold side" on an S15 OEM setup. Yall are drunk if you think that plastic plumbing is cold. __________________ 5.3/4l80e/turbo 240sx playthrough: https://tinyurl.com/turbo240

01-17-2013, 04:11 PM	#37
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,649 Trader Rating: (17) Feedback Score: 17 reviews	they did not put it on the cold side, there is no cold side. Why do you think I mentioned to measure plumbing volume? The bypass valve functions best when there is minimal plumbing volume between the compressor and it self, it has nothing to do with which "side" it is placed. If I went outside, and removed the side mount from the S15, replacing it with a straight piece of pipe, you would not be able to tell it was gone. But suddenly, its got no more " hot side"? Bypass function would be relatively unaffected, since plumbing volume would not change much. If I was to, say, install a much larger intercooler and left everything else the way it was, the bypass would suddenly not work very well. yet I never moved it from the "side" it was on, and it doesnt just spontaneously stop working. No, what happened is, plumbing volume changed dramatically. __________________ 5.3/4l80e/turbo 240sx playthrough: https://tinyurl.com/turbo240

01-17-2013, 10:53 PM	#44
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 36 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	Put it in the easiest spot to recirculate. There isn't anyway for anyone to definitly or repeatably measure the best spot on these cars. Not a a single street car here will know or act any differently. Again, put it where re circulation is easiest to route. __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

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01-17-2013, 04:02 PM	#36
PrimeDirective Zilvia Member Join Date: Jan 2012 Location: Olympia WA Age: 33 Posts: 266 Trader Rating: (3) Feedback Score: 3 reviews	The fuck does that have to do with BOV location? My previous point(s) still stands. So the SMIC is no good, why would nissan still put the recirc valve on the cold side versus the hot?

01-17-2013, 04:26 PM	#38
PrimeDirective Zilvia Member Join Date: Jan 2012 Location: Olympia WA Age: 33 Posts: 266 Trader Rating: (3) Feedback Score: 3 reviews	Yes, there is a cold side. Nissan put a intercooler there so its at least meant to be a cold side sometimes. And I think everyone here knows how easy it is to plumb recirc tubing from the hotside of a SR20 and RB20/25/26 compared to the cold side. The S13 SR20 had the recirc valve on the hotside and then Nissan moved it to the coldside or closer to the throttle body on the S14 and S15! When I say cold side I mean close to the throttle body. Anyways, believe what you want.

01-17-2013, 04:40 PM	#40
slidin40 Join Date: May 2012 Location: anderson Age: 36 Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	I'm sorry I dont realize I asked the same question months ago. I guess I never got a straight answer, so i decided to ask again. But I do thank you for your inputs and advice.

01-17-2013, 04:49 PM	#42
PrimeDirective Zilvia Member Join Date: Jan 2012 Location: Olympia WA Age: 33 Posts: 266 Trader Rating: (3) Feedback Score: 3 reviews	^ I agree, my car is the same way, because the plumbing was a nightmare. However, if a person asks where we can at least tell them what would be ideal and why.

01-17-2013, 04:50 PM	#43
slidin40 Join Date: May 2012 Location: anderson Age: 36 Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	Didn't* autocorrect