Help: Top mount manifold? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Indo240SX · 04-22-2008, 04:03 PM

I've got a 97 240sx with a red top motor. My turbo is on it's way out and was thinking of goin to a t3/t4. What's the advantage of a top mount turbo manifold? I'm hoping to build up to 300whp and I was also wondering what would be a good size of fuel injectors to go with. I've read 720cc but my friend says to get 550cc. Any help would be great. Thanks.

blacklable245 · 04-22-2008, 04:46 PM

what turbo do you have on there now?...T28, 550 injectors, and a 550 ecu flash will get you close to 300whp

Indo240SX · 04-22-2008, 05:45 PM

Uh, ya...about that. I've just got the stock turbo (T25 I suppose) with a FMIC and manual boost controller. It's still running ok but it's starting to smoke a good bit. Everything was done to the car before I got it. I've got a T3/T4 turbo lined up for that car and of course I'm going to get cams, injectors, fuel pump and reprogrammed and all that. At this point I need to get an exhaust manifold and I was wondering why some are mounted on top...what's the advantage?

Sil180 · 04-22-2008, 06:41 PM

If you are going to use a T3/T4 you will need to high mount that turbo. Just have to make sure they are good quality lot of those ebay shit cracks after 2 weeks. Also you will have to remove your ABS unit if you have one installed. Its on the way of the dump pipe.

Indo240SX · 04-23-2008, 08:38 AM

So, the top mount is just to make more room for bigger turbos?

*TougeLabs* · 04-24-2008, 08:08 PM

In essence yes...Also design can enhance spool up times as well...Go for it man i love my setup! throw a nice gt series and you will be golden

*fliprayzin240sx* · 04-26-2008, 10:13 AM

If 300whp is all your shooting for, forget going top mount and T3/4 turbo. That can be had just staying bottom mount. Get a GT2871R, 740cc injectors, Zmaf, rom tune and call it quits.

Indo240SX · 04-29-2008, 11:09 PM

Well, I'm starting to see the potential of this car. I've decided the I can get quite a bit more than 300hp easily. I'm going to go ahead and get 850cc injectors and I've got a top mount setup on it's way and my friend knows a place in Atlanta to dyno tune my ecu. He did my friend's 700+hp turbo lexus IS.

wantboost · 04-30-2008, 04:55 AM

there are places in tn that can do it too,
ga is a good ways to drive for a tune

Indo240SX · 04-30-2008, 11:18 PM

Well I'm midway between Atlanta and Nashville. Not really interested in having it done locally in Chattanooga. So either way will be about the same.....actually nashville is a bit further.

04-22-2008, 04:03 PM	#1
Indo240SX Join Date: Apr 2008 Location: Hixson, TN Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	Help: Top mount manifold? I've got a 97 240sx with a red top motor. My turbo is on it's way out and was thinking of goin to a t3/t4. What's the advantage of a top mount turbo manifold? I'm hoping to build up to 300whp and I was also wondering what would be a good size of fuel injectors to go with. I've read 720cc but my friend says to get 550cc. Any help would be great. Thanks.

04-26-2008, 10:13 AM	#7
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	If 300whp is all your shooting for, forget going top mount and T3/4 turbo. That can be had just staying bottom mount. Get a GT2871R, 740cc injectors, Zmaf, rom tune and call it quits. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

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04-22-2008, 04:46 PM	#2
blacklable245 Leaky Injector Join Date: Feb 2008 Location: Mars Posts: 55 Trader Rating: (0) Feedback Score: 0 reviews	what turbo do you have on there now?...T28, 550 injectors, and a 550 ecu flash will get you close to 300whp

04-22-2008, 05:45 PM	#3
Indo240SX Join Date: Apr 2008 Location: Hixson, TN Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	Uh, ya...about that. I've just got the stock turbo (T25 I suppose) with a FMIC and manual boost controller. It's still running ok but it's starting to smoke a good bit. Everything was done to the car before I got it. I've got a T3/T4 turbo lined up for that car and of course I'm going to get cams, injectors, fuel pump and reprogrammed and all that. At this point I need to get an exhaust manifold and I was wondering why some are mounted on top...what's the advantage?

04-22-2008, 06:41 PM	#4
Sil180 Join Date: Apr 2008 Location: Long Beach Age: 44 Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	If you are going to use a T3/T4 you will need to high mount that turbo. Just have to make sure they are good quality lot of those ebay shit cracks after 2 weeks. Also you will have to remove your ABS unit if you have one installed. Its on the way of the dump pipe.

04-23-2008, 08:38 AM	#5
Indo240SX Join Date: Apr 2008 Location: Hixson, TN Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	So, the top mount is just to make more room for bigger turbos?

04-24-2008, 08:08 PM	#6
TougeLabs Premium Member Join Date: Jan 2007 Location: New York Age: 38 Posts: 1,570 Trader Rating: (7) Feedback Score: 7 reviews	In essence yes...Also design can enhance spool up times as well...Go for it man i love my setup! throw a nice gt series and you will be golden

04-29-2008, 11:09 PM	#8
Indo240SX Join Date: Apr 2008 Location: Hixson, TN Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	Well, I'm starting to see the potential of this car. I've decided the I can get quite a bit more than 300hp easily. I'm going to go ahead and get 850cc injectors and I've got a top mount setup on it's way and my friend knows a place in Atlanta to dyno tune my ecu. He did my friend's 700+hp turbo lexus IS.

04-30-2008, 04:55 AM	#9
wantboost Leaky Injector Join Date: Oct 2006 Location: Atlanta Age: 37 Posts: 99 Trader Rating: (1) Feedback Score: 1 reviews	there are places in tn that can do it too, ga is a good ways to drive for a tune

04-30-2008, 11:18 PM	#10
Indo240SX Join Date: Apr 2008 Location: Hixson, TN Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	Well I'm midway between Atlanta and Nashville. Not really interested in having it done locally in Chattanooga. So either way will be about the same.....actually nashville is a bit further.