<=400whp Goal - Exhaust Manifold Options? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

BlazedGlory · 03-31-2005, 09:37 AM

In the very near future I plan on doing some major upgrading to my redtop. My goal is for 400whp at the most. I've been trying to search for some info on manifolds, but I'm having some problems finding all the information I need.

It seems that it is accepted fact that equal length manifolds are best. I've tried to search for some options, but am having some hard times. I'm sure I'd be happy with a full-race manifold, but I don't really want to fork out that kind of money. What other companies make reliable equal length manifolds that don't cost $1000? Is there such a company?

What kind of difference would there be if I didn't go with an equal length manifold? What are some good companies that make non-equal length manifolds?

Thanks in advance...

Mike Wazowski · 03-31-2005, 10:34 AM

Quote:

Originally Posted by BlazedGlory

In the very near future I plan on doing some major upgrading to my redtop. My goal is for 400whp at the most. I've been trying to search for some info on manifolds, but I'm having some problems finding all the information I need.

It seems that it is accepted fact that equal length manifolds are best. I've tried to search for some options, but am having some hard times. I'm sure I'd be happy with a full-race manifold, but I don't really want to fork out that kind of money. What other companies make reliable equal length manifolds that don't cost $1000? Is there such a company?

What kind of difference would there be if I didn't go with an equal length manifold? What are some good companies that make non-equal length manifolds?

Thanks in advance...

You have to decide and tell us whether you are going top or bottom. Are you going internal or external? Then we can give you suggestions.

Rusker · 03-31-2005, 12:16 PM

Quality costs money...

blu808 · 03-31-2005, 01:51 PM

Why would you go topmount? Just for looks? You can fit a capible turbo on a bottom mount just fine.

I reccomend, Silk Road Manifolds (signal), hks.
all the cheap ones crack.

I use silk road

wootwoot · 03-31-2005, 03:41 PM

Fullrace is the only true option to consider at this point. Their bottom mount is 850 I think?

kensreliableb18b · 03-31-2005, 03:45 PM

a megan manifold will hold

ultraDorksGarage · 03-31-2005, 06:30 PM

Quote:

Originally Posted by blu808

Why would you go topmount? Just for looks? You can fit a capible turbo on a bottom mount just fine.

I reccomend, Silk Road Manifolds (signal), hks.
all the cheap ones crack.

I use silk road

400rwhp.....?
top mount is for big turbos. if u use anything bigger than a t3 centersection on a low mount, the position of turbo ends up very close to oil return bung on motor, then u dont get adaquate oil drainage. not to mention snaking the intake piping past the powersteering is a [email protected]

i am running a t3/t4 with about 63a/r housings. compressor side fits with 1 finger space between motor and snail, oil return line is barely an 1 1/2" above bung. 400rwhp is alot out of an sr, thats pretty dyno queen in my opinion, which leaves u running something big, which will in my opinion necessitate top mount to fit.

and yes cheap ones crack. at 400 horse, u will be running pretty crazy boost, with retarded timing, that leaves u with high egt's and cheap ones crack when u turn them into cherry pipes. ive never seen above 370rwhp without high egt's and some crazy boost/retarded timing. but then again, hawaii is small and noone does dyno queens/quartermilers.

Campos · 03-31-2005, 07:20 PM

i have a megan w/gt2871r .86 should be good combo for anyone lookin to hit the 400 whp range.....jwt s4 cams, greddy intake man. ect ect and a enthalpy ecu.....

wootwoot · 03-31-2005, 08:25 PM

with the .64 gt2871r you can hit 400rwhp. That number is not dyno queen if you set it up right. 400whp is a lot of a stock sr, not a lot for an sr.

Mike Wazowski · 03-31-2005, 09:25 PM

Quote:

Originally Posted by wootwoot

Fullrace is the only true option to consider at this point. Their bottom mount is 850 I think?

899 + ship (about 20 anywhere in the u.s.)
wastegate is 100 dollar option
dumptube for wastegate is another 100 dollar option

Mike Wazowski · 03-31-2005, 09:26 PM

Quote:

Originally Posted by wootwoot

with the .64 gt2871r you can hit 400rwhp. That number is not dyno queen if you set it up right. 400whp is a lot of a stock sr, not a lot for an sr.

400rwhp on a 0.64? wow i would love to see that. really.

wootwoot · 03-31-2005, 09:46 PM

Go on Freshalloy if you want to see actual technical date.That is with exhaust manifold, cams, intake manifold and about 18-20 psi though; So its pushing it but definitely doable on pump gas

Inland180 · 03-31-2005, 10:01 PM

I always thought that 400 +hp was the .86... its good to hear the .64 can do it also.

Campos · 03-31-2005, 10:35 PM

i have the .86 and it works great...not laggy at all....i love it...especially at 21psi

ultraDorksGarage · 04-01-2005, 12:36 AM

400rwhp off of a gt28 + 21psi? i went with the wrong combo, damn thats sick!!!!! how long can u boost at 21 psi?

lots of people i know went for strokerkits and gt28**, mainly for mountain runs. average is 350-360rwhp at 1.2 bar boost.

i was wondering, how does the car react to more rpm(of course building it for such)? ive been contemplating building my sr for about 1.2-1.4 bar boost and about 8-8.5k rpm. the usual stuff of course, but wondering how it stacks up to the stroker kits...

i figure its a little cheaper to get the car to rev up there compared to getting a decent stroker set up and wanted to know if its worth it.

Campos · 04-01-2005, 07:26 AM

8k is doable on just some comp cam valve springs @ $150, but don't forget the rocker arm stoppers.

03-31-2005, 09:37 AM	#1
BlazedGlory Zilvia Junkie Join Date: Jan 2003 Location: Canton, GA Posts: 370 Trader Rating: (1) Feedback Score: 1 reviews	<=400whp Goal - Exhaust Manifold Options? In the very near future I plan on doing some major upgrading to my redtop. My goal is for 400whp at the most. I've been trying to search for some info on manifolds, but I'm having some problems finding all the information I need. It seems that it is accepted fact that equal length manifolds are best. I've tried to search for some options, but am having some hard times. I'm sure I'd be happy with a full-race manifold, but I don't really want to fork out that kind of money. What other companies make reliable equal length manifolds that don't cost $1000? Is there such a company? What kind of difference would there be if I didn't go with an equal length manifold? What are some good companies that make non-equal length manifolds? Thanks in advance...

03-31-2005, 12:16 PM	#3
Rusker Zilvia Junkie Join Date: Feb 2004 Location: Washington Posts: 351 Trader Rating: (0) Feedback Score: 0 reviews	Quality costs money... __________________ 1990 S13/SR20

03-31-2005, 07:20 PM	#8
Campos Zilvia Addict Join Date: Jan 2005 Location: southeast tx Age: 37 Posts: 659 Trader Rating: (2) Feedback Score: 2 reviews	i have a megan w/gt2871r .86 should be good combo for anyone lookin to hit the 400 whp range.....jwt s4 cams, greddy intake man. ect ect and a enthalpy ecu..... __________________ Parting out SR build....

03-31-2005, 10:01 PM	#13
Inland180 Nissanaholic! Join Date: Jan 2004 Location: Southern Cali Posts: 1,763 Trader Rating: (21) Feedback Score: 21 reviews	I always thought that 400 +hp was the .86... its good to hear the .64 can do it also. __________________ PTE6262 Full-Race Twin Scroll FTW! Feedback LINK

03-31-2005, 10:35 PM	#14
Campos Zilvia Addict Join Date: Jan 2005 Location: southeast tx Age: 37 Posts: 659 Trader Rating: (2) Feedback Score: 2 reviews	i have the .86 and it works great...not laggy at all....i love it...especially at 21psi __________________ Parting out SR build....

03-31-2005, 01:51 PM	#4
blu808 Post Whore! Join Date: Dec 2002 Location: Campbell, Ca Age: 38 Posts: 5,010 Trader Rating: (3) Feedback Score: 3 reviews	Why would you go topmount? Just for looks? You can fit a capible turbo on a bottom mount just fine. I reccomend, Silk Road Manifolds (signal), hks. all the cheap ones crack. I use silk road

03-31-2005, 03:41 PM	#5
wootwoot Post Whore! Join Date: Jan 2004 Location: sarasota florida biatch Age: 35 Posts: 3,850 Trader Rating: (0) Feedback Score: 0 reviews	Fullrace is the only true option to consider at this point. Their bottom mount is 850 I think?

03-31-2005, 03:45 PM	#6
kensreliableb18b Zilvia Addict Join Date: Jun 2004 Location: so cal - 626, 909, 562 and 949. 818 if i feel like running away Posts: 945 Trader Rating: (1) Feedback Score: 1 reviews	a megan manifold will hold

03-31-2005, 08:25 PM	#9
wootwoot Post Whore! Join Date: Jan 2004 Location: sarasota florida biatch Age: 35 Posts: 3,850 Trader Rating: (0) Feedback Score: 0 reviews	with the .64 gt2871r you can hit 400rwhp. That number is not dyno queen if you set it up right. 400whp is a lot of a stock sr, not a lot for an sr.

03-31-2005, 09:46 PM	#12
wootwoot Post Whore! Join Date: Jan 2004 Location: sarasota florida biatch Age: 35 Posts: 3,850 Trader Rating: (0) Feedback Score: 0 reviews	Go on Freshalloy if you want to see actual technical date.That is with exhaust manifold, cams, intake manifold and about 18-20 psi though; So its pushing it but definitely doable on pump gas

04-01-2005, 12:36 AM	#15
ultraDorksGarage Zilvia Member Join Date: Mar 2005 Location: Hawaii Posts: 204 Trader Rating: (0) Feedback Score: 0 reviews	400rwhp off of a gt28 + 21psi? i went with the wrong combo, damn thats sick!!!!! how long can u boost at 21 psi? lots of people i know went for strokerkits and gt28**, mainly for mountain runs. average is 350-360rwhp at 1.2 bar boost. i was wondering, how does the car react to more rpm(of course building it for such)? ive been contemplating building my sr for about 1.2-1.4 bar boost and about 8-8.5k rpm. the usual stuff of course, but wondering how it stacks up to the stroker kits... i figure its a little cheaper to get the car to rev up there compared to getting a decent stroker set up and wanted to know if its worth it.

04-01-2005, 07:26 AM	#16
Campos Zilvia Addict Join Date: Jan 2005 Location: southeast tx Age: 37 Posts: 659 Trader Rating: (2) Feedback Score: 2 reviews	8k is doable on just some comp cam valve springs @ $150, but don't forget the rocker arm stoppers. __________________ Parting out SR build....

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