I know its been asked several times

kwnate · 04-24-2009, 03:35 PM

An exhaust on a NA is not going to net 20hp. .020 overbore is not going to make any noticable difference in power. It will probably feel faster due to the old motor being old and worn out.

h8z2luze · 04-24-2009, 03:40 PM

lol thanks kwnate I actually just pm'd you. Sorry about that. I have a 3" blitz nur spec catback system on it and a aftermarket intake tube with cone filter.

supradaddy0803 · 04-25-2009, 01:52 PM

With that big of an exhaust on a N/A you are actually not going to gain anything. That exhaust is for a turbo car and lets it breath a lot more. The exhaust you need for yours to notice anything is something way smaller. I bought a HKS Dragger for mine when it was still a N/A and it felt like it lost power and also would backfire on a high rev shift. Now with the 1JZ it fits right because turbo cars need to flow freely and let out a lot of exhaust because of the added air going in. Think of it this way when you think of horsepower, More air in more air out = More horsepower. Even putting a cone filter on your N/A you are still limited by the size of the intake runners and are not gaining much more air in than you were without it.

h8z2luze · 04-26-2009, 09:09 AM

So your pretty much saying I have a stock car...

Sonyps307 · 10-21-2010, 01:19 AM

Just build the 7mge to take a huge turbo Or a shot of nos

zby67 · 10-21-2010, 02:19 AM

Quote:

Originally Posted by Sonyps307

Just build the 7mge to take a huge turbo Or a shot of nos

thats a nice way to blow the engine or was the the point?

Sonyps307 · 10-21-2010, 02:50 AM

No u will wont blew it if it's build up withe forged parts and arp bolts the stock crank is already forged but I don't know how much hp it can hold safely

zby67 · 10-20-2010, 12:15 AM

Quote:

Originally Posted by kwnate

An exhaust on a NA is not going to net 20hp. .020 overbore is not going to make any noticable difference in power. It will probably feel faster due to the old motor being old and worn out.

what about boring over by .2 or .4 with the 3" exhaust and cold air intake?

907mge · 10-20-2010, 02:46 AM

Do the math and figure out the change in displacement and that should point you in the right direction.

zby67 · 10-20-2010, 03:25 AM

Quote:

Originally Posted by 907mge

Do the math and figure out the change in displacement and that should point you in the right direction.

im really bad a math... and i wouldnt even know ware to start lol...

04-24-2009, 03:35 PM	#1
kwnate SP58GT Join Date: Jul 2005 Location: USA Posts: 633	An exhaust on a NA is not going to net 20hp. .020 overbore is not going to make any noticable difference in power. It will probably feel faster due to the old motor being old and worn out. __________________ Nate

04-24-2009, 03:40 PM	#2
h8z2luze 12psi boost Join Date: May 2006 Location: Nor*Cal Posts: 338	lol thanks kwnate I actually just pm'd you. Sorry about that. I have a 3" blitz nur spec catback system on it and a aftermarket intake tube with cone filter. __________________ 1989 Supra 7MGE MK3 5-speed project... http://www.cardomain.com/ride/2385505

04-25-2009, 01:52 PM	#3
supradaddy0803 12psi boost Join Date: May 2006 Location: Athens, TX Posts: 308	With that big of an exhaust on a N/A you are actually not going to gain anything. That exhaust is for a turbo car and lets it breath a lot more. The exhaust you need for yours to notice anything is something way smaller. I bought a HKS Dragger for mine when it was still a N/A and it felt like it lost power and also would backfire on a high rev shift. Now with the 1JZ it fits right because turbo cars need to flow freely and let out a lot of exhaust because of the added air going in. Think of it this way when you think of horsepower, More air in more air out = More horsepower. Even putting a cone filter on your N/A you are still limited by the size of the intake runners and are not gaining much more air in than you were without it. __________________ 1987 supra NA 5 speed 1JZGTE swap Tokico Illumina 2 and Eibach springs Tokico pillow blocks Suspension Techniques front and rear sway bar HKS super dragger cat-back exhaust plus test pipe Greddy Profec B spec 2 boost controller HKS type 1 turbo timer Supra sport solid steel drive shaft Walboro 255 fuel pump JZA70 Front end mod 18" Volk Racing AV3 18x8.5 front 18x9.5 rear

04-26-2009, 09:09 AM	#4
h8z2luze 12psi boost Join Date: May 2006 Location: Nor*Cal Posts: 338	So your pretty much saying I have a stock car... __________________ 1989 Supra 7MGE MK3 5-speed project... http://www.cardomain.com/ride/2385505

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10-21-2010, 01:19 AM	#5
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	Just build the 7mge to take a huge turbo Or a shot of nos

10-21-2010, 02:50 AM	#7
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	No u will wont blew it if it's build up withe forged parts and arp bolts the stock crank is already forged but I don't know how much hp it can hold safely

10-20-2010, 02:46 AM	#9
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	Do the math and figure out the change in displacement and that should point you in the right direction.