A Few questions

turbozxi · 13th July 2003, 11:20 AM

1. I am wondering if anyone knows about this way of attaching an external waste gate ? They reccomending I use this method on Honda tech. Its attaching the External on to the Down pipe flange right where the internal waste gate exits.
I am not sure if it will flow any better then a standard wastegate...

2.Anyone know if 2inch intercooler piping will flow 300whp.

3.Anyone know will my Vr4 intercooler be able to flow 300whp it has 1 3/4inch inlets/outlets on it.

LowTegra · 13th July 2003, 11:47 AM

that wastegate setup should be fine , my friend runs it , and works fine no boost creep at all.

2 inch piping is ok might wanna look into 2 , 1/4 shouldnt be too big of a deal.

a vr4 cooler will flow 300 IF its moded slightly , the endtanks on them are terrible , i had mine stock pressure tested most efficent at 13 pounds, with moded endtanks inlets and outlets then had done again and prooved to be good for 21 hug flow difference , but i guess its a matter of opionion but as they say the better you buy the better the results :wink:

turbozxi · 13th July 2003, 05:07 PM

Cheers Lowtegra, what did you do to the end tanks weld 2in or 2.5 in pipes onto them?

LowTegra · 13th July 2003, 06:01 PM

they 2 1/4 in 2 1/2 out

lofreq · 14th July 2003, 03:07 PM

im missing something here... if this flange goes on the exhaust AFTER the turbo (right after the internal wastegate opening), then what is the point? how can it regulate exhaust gases if all the exhaust has run thu the turbine fins already?

surely all wastegate plumbing has to be done *before* the exhaust reaches the turbo? (ie, between the exhaust ports on the block, and the turbo itself...)

Spanky69r · 14th July 2003, 03:16 PM

yeah im with lofreq
isnt it defeating the purpose ?
having it that way is just like having a dump pipe which doesnt control boost creep very well

90CIVICSIR · 14th July 2003, 05:59 PM

I think they are meaning having the wastegate as close to the turbo as possible like butting up against the exshaust flange where the turbo attaches?

am i right?

Pdu-NZ · 14th July 2003, 07:43 PM

I think when you bolt that after the internal waste gate, you have to siable the internal one so it's always open and so the external will now regulate...

90CIVICSIR · 15th July 2003, 09:23 AM

Oh well that sounds kinda silly doesnt it?

botbot · 17th July 2003, 12:22 AM

yeah thats like using external instead of an internal one, maybe ull get slightly betta boost control but external wastegates were made especially to release excess exaust before it enters the turbo, not after like factory internal ones. well thats how i figure it anyway

13th July 2003, 11:20 AM	#1 (permalink)
turbozxi Senior Member 7,000rpm (Peak Power) Join Date: Feb 2002 Posts: 4,091 Location: Auckland	A Few questions 1. I am wondering if anyone knows about this way of attaching an external waste gate ? They reccomending I use this method on Honda tech. Its attaching the External on to the Down pipe flange right where the internal waste gate exits. I am not sure if it will flow any better then a standard wastegate... 2.Anyone know if 2inch intercooler piping will flow 300whp. 3.Anyone know will my Vr4 intercooler be able to flow 300whp it has 1 3/4inch inlets/outlets on it.

13th July 2003, 11:47 AM	#2 (permalink)
LowTegra Senior Member 5,000rpm (VTEC Power!) Join Date: Mar 2002 Posts: 1,115	that wastegate setup should be fine , my friend runs it , and works fine no boost creep at all. 2 inch piping is ok might wanna look into 2 , 1/4 shouldnt be too big of a deal. a vr4 cooler will flow 300 IF its moded slightly , the endtanks on them are terrible , i had mine stock pressure tested most efficent at 13 pounds, with moded endtanks inlets and outlets then had done again and prooved to be good for 21 hug flow difference , but i guess its a matter of opionion but as they say the better you buy the better the results :wink: __________________ if parts arn't breaking your not making enough power

13th July 2003, 06:01 PM	#4 (permalink)
LowTegra Senior Member 5,000rpm (VTEC Power!) Join Date: Mar 2002 Posts: 1,115	they 2 1/4 in 2 1/2 out __________________ if parts arn't breaking your not making enough power

14th July 2003, 03:07 PM	#5 (permalink)
lofreq Team NZH: Retired 6,000rpm (Max Torque) Join Date: Jan 2002 Posts: 1,873 Location: Auckland	im missing something here... if this flange goes on the exhaust AFTER the turbo (right after the internal wastegate opening), then what is the point? how can it regulate exhaust gases if all the exhaust has run thu the turbine fins already? surely all wastegate plumbing has to be done before the exhaust reaches the turbo? (ie, between the exhaust ports on the block, and the turbo itself...) __________________ three river lonely hearts club シャッ! コッ!

14th July 2003, 05:59 PM	#7 (permalink)
90CIVICSIR Senior Member 5,000rpm (VTEC Power!) Join Date: Jun 2002 Posts: 1,376	I think they are meaning having the wastegate as close to the turbo as possible like butting up against the exshaust flange where the turbo attaches? am i right? __________________ ".....watching fate as it flows down the path we have chose..."

13th July 2003, 05:07 PM	#3 (permalink)
turbozxi Senior Member 7,000rpm (Peak Power) Join Date: Feb 2002 Posts: 4,091 Location: Auckland	Cheers Lowtegra, what did you do to the end tanks weld 2in or 2.5 in pipes onto them?

14th July 2003, 07:43 PM	#8 (permalink)
Pdu-NZ Senior Member 6,000rpm (Max Torque) Join Date: Jan 2002 Posts: 2,322 Location: Auckland	I think when you bolt that after the internal waste gate, you have to siable the internal one so it's always open and so the external will now regulate... __________________ Current: 1997 Nissan Primera Neo VVL Wagon Manual. Ex: 1993 Honda Prelude 5Spd VTEC. Ex: 1987 Honda Prelude 4WS.

15th July 2003, 09:23 AM	#9 (permalink)
90CIVICSIR Senior Member 5,000rpm (VTEC Power!) Join Date: Jun 2002 Posts: 1,376	Oh well that sounds kinda silly doesnt it? __________________ ".....watching fate as it flows down the path we have chose..."

17th July 2003, 12:22 AM	#10 (permalink)
botbot Senior Member 3,000rpm (Grandma Drag) Join Date: Aug 2002 Posts: 219	yeah thats like using external instead of an internal one, maybe ull get slightly betta boost control but external wastegates were made especially to release excess exaust before it enters the turbo, not after like factory internal ones. well thats how i figure it anyway __________________ www.rangimods.co.nz

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