Stock Exhaust Manifold Wieght - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

guitaraholic · 08-31-2007, 12:02 AM

Would going to an aftermarket manifold save any weight, (Cast vs tubular steel manifold)? My only reference is when I went from a manifold to headers on my Eclipse I saved ~20lbs.
Yes the extra HP would be nice too, if it makes any.

Grenade180sx · 08-31-2007, 12:39 AM

port the stock exhaust mani.. ull make more power then any tubular. i have seen many dyno sheets with stock to tomei manis and hks, ud be surprised at what the stock cast irons ones can do!

they dont crack A problem with tubular ones

the hold heat better, which means lower engine bay temps and better exhaust flow.

port the bitch! and have fun

guitaraholic · 08-31-2007, 01:34 AM

Cool, might have to do that. Do you think it would be worth it with a T-28? Also, where did you find the dyno results of it?

k's_silvia2.0 · 08-31-2007, 01:39 AM

Quote:

Originally Posted by Grenade180sx

port the stock exhaust mani.. ull make more power then any tubular. i have seen many dyno sheets with stock to tomei manis and hks, ud be surprised at what the stock cast irons ones can do!

they dont crack A problem with tubular ones

the hold heat better, which means lower engine bay temps and better exhaust flow.

port the bitch! and have fun

You know a spot that can do it?

Grenade180sx · 08-31-2007, 02:01 AM

a local shop down here JPRMOTOR has done various dynos on sr's with stock and tube manis one car dynod at 256rwhp on a stock mani then was changed out to a tomei mani and dropped to 236rwhp. the powerband was a little better but lost a large amount. as for places that do it, im looking intro rightnow for myself and as soon as i find a good shop ill chime back!

k's_silvia2.0 · 08-31-2007, 02:06 AM

^ the dudes at momentumGT are dynod at 320 rwhp on stock manni.

Grenade180sx · 09-01-2007, 02:12 PM

stock mani's are the shiet! no doubt!

08-31-2007, 12:02 AM	#1
guitaraholic Zilvia Junkie Join Date: Jun 2006 Location: Spanish Fort, AL Posts: 430 Trader Rating: (0) Feedback Score: 0 reviews	Stock Exhaust Manifold Wieght Would going to an aftermarket manifold save any weight, (Cast vs tubular steel manifold)? My only reference is when I went from a manifold to headers on my Eclipse I saved ~20lbs. Yes the extra HP would be nice too, if it makes any.

08-31-2007, 02:06 AM	#6
k's_silvia2.0 Post Whore! Join Date: Mar 2007 Location: 909/951 Age: 38 Posts: 5,111 Trader Rating: (17) Feedback Score: 17 reviews	^ the dudes at momentumGT are dynod at 320 rwhp on stock manni. __________________

08-31-2007, 12:39 AM	#2
Grenade180sx Nissanaholic! Join Date: Aug 2007 Location: 909/951 Age: 37 Posts: 2,457 Trader Rating: (1) Feedback Score: 1 reviews	port the stock exhaust mani.. ull make more power then any tubular. i have seen many dyno sheets with stock to tomei manis and hks, ud be surprised at what the stock cast irons ones can do! they dont crack A problem with tubular ones the hold heat better, which means lower engine bay temps and better exhaust flow. port the bitch! and have fun

08-31-2007, 01:34 AM	#3
guitaraholic Zilvia Junkie Join Date: Jun 2006 Location: Spanish Fort, AL Posts: 430 Trader Rating: (0) Feedback Score: 0 reviews	Cool, might have to do that. Do you think it would be worth it with a T-28? Also, where did you find the dyno results of it?

08-31-2007, 02:01 AM	#5
Grenade180sx Nissanaholic! Join Date: Aug 2007 Location: 909/951 Age: 37 Posts: 2,457 Trader Rating: (1) Feedback Score: 1 reviews	a local shop down here JPRMOTOR has done various dynos on sr's with stock and tube manis one car dynod at 256rwhp on a stock mani then was changed out to a tomei mani and dropped to 236rwhp. the powerband was a little better but lost a large amount. as for places that do it, im looking intro rightnow for myself and as soon as i find a good shop ill chime back!

09-01-2007, 02:12 PM	#7
Grenade180sx Nissanaholic! Join Date: Aug 2007 Location: 909/951 Age: 37 Posts: 2,457 Trader Rating: (1) Feedback Score: 1 reviews	stock mani's are the shiet! no doubt!