450whp rb25det? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Mi BEAN · 07-13-2011, 07:15 PM

Im just trying to get some input on this. I have an s14 se model with a RB25DET swap in it. My goal is to hit 450hp at the wheel. I have been doing research and keep coming up with different answers on how much my internals can handle. what are some of your inputs on what i should replace on the bottom end to hold something like this and possibly 500 down the road.

From my search The rings will go first so def replace those.
Ill need to hone the block.
Will the stock crack, rod and pistons hold this goal of hp??

Remember this is an input question so please no bash and dashing!!

Sileighty_85 · 07-13-2011, 07:30 PM

Stock engine will hold 500hp

need to have a real quality ECU and Tune though. PFC, AEM, Haltech.

Mi BEAN · 07-13-2011, 07:45 PM

but is it safe to say you will need new rings and hone also to keep those parts going for 500??

240sxwanted · 07-13-2011, 07:49 PM

you should be fine up to 500hp on stock internals, anything more than that you have to start building your block

Sileighty_85 · 07-13-2011, 08:03 PM

Quote:

Originally Posted by Mi BEAN

but is it safe to say you will need new rings and hone also to keep those parts going for 500??

its not the rings that fail, its the ring lands on the pistons.

If your going for 500+ you'll need aftermarket pistons

Mi BEAN · 07-13-2011, 08:30 PM

Quote:

Originally Posted by Sileighty_85

its not the rings that fail, its the ring lands on the pistons.

If your going for 500+ you'll need aftermarket pistons

So the crack and rods should be able to handle it fine?

singlecamslam · 07-13-2011, 08:32 PM

for the 4th time, yes it will be fine, assuming your engine is not a turd.

Mi BEAN · 07-14-2011, 01:57 PM

Ok then killer. What do you guys think about pistons and rings? what do you look for to reach that goal?

Sileighty_85 · 07-14-2011, 03:51 PM

IF YOUR GOAL IS 450HP THEN THE RB STOCK INTERNALS WILL BE FINE, NO INTERNAL MODS ARE NEEDED.

If your gonna replace pistons then you might as well do Rods as well.

NissanEnthus · 07-14-2011, 08:14 PM

You state no bashing but you REPEATEDLY get your answer or INPUT yet you come back with the same question?!....Your gonna stick to your findings SO GO DO IT why do you even create a thread for?? You obviously don't know much about the engine you have So why would you even want 500 HP for??....

blingbling · 07-14-2011, 08:27 PM

This is hilarious.
Alzheimer's boy here needs to fucking read

DJDANGER24 · 07-14-2011, 08:33 PM

Soooo, will the flux capacitor be good for 501hp? what about that?

4x4le · 07-14-2011, 11:57 PM

gt35r on 23 psi. freddy im, jgy fuel rail. Tuned on nistune

Now this is with a calabration that is closer to a dyno jet reading, and the customer is going to dyno on one soon and let me know his results.

do your tuning on a dd, get your numbers on a dj

but with a nistune ecu, I did not feel at all that I was at a disadvantage. This thing was easy to tune! We used a z32 ecu and everything about it was predictable, repeatable and consistant.

bardabe · 07-15-2011, 02:17 AM

^^^ Nistune FTMFW. I need to order a couple more tomorrow.

07-13-2011, 07:15 PM	#1
Mi BEAN Leaky Injector Join Date: Mar 2011 Location: Norfolk, Va Age: 35 Posts: 94 Trader Rating: (0) Feedback Score: 0 reviews	450whp rb25det? Im just trying to get some input on this. I have an s14 se model with a RB25DET swap in it. My goal is to hit 450hp at the wheel. I have been doing research and keep coming up with different answers on how much my internals can handle. what are some of your inputs on what i should replace on the bottom end to hold something like this and possibly 500 down the road. From my search The rings will go first so def replace those. Ill need to hone the block. Will the stock crack, rod and pistons hold this goal of hp?? Remember this is an input question so please no bash and dashing!!

07-13-2011, 07:30 PM	#2
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Stock engine will hold 500hp need to have a real quality ECU and Tune though. PFC, AEM, Haltech. __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

07-13-2011, 08:32 PM	#7
singlecamslam Post Whore! Join Date: Apr 2008 Location: Norcal Posts: 2,531 Trader Rating: (10) Feedback Score: 10 reviews	for the 4th time, yes it will be fine, assuming your engine is not a turd. __________________ Nothing says racecar like a stock car with no interior.

07-14-2011, 03:51 PM	#9
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	IF YOUR GOAL IS 450HP THEN THE RB STOCK INTERNALS WILL BE FINE, NO INTERNAL MODS ARE NEEDED. If your gonna replace pistons then you might as well do Rods as well. __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

07-14-2011, 08:33 PM	#12
DJDANGER24 Nissanaholic! Join Date: Jun 2007 Location: San Diego (Fletcher Hills), CA Age: 36 Posts: 2,439 Trader Rating: (10) Feedback Score: 10 reviews	Soooo, will the flux capacitor be good for 501hp? what about that? __________________ Built RB25 - RB The World - Vertex Everything @RBVertexRidge

07-13-2011, 07:45 PM	#3
Mi BEAN Leaky Injector Join Date: Mar 2011 Location: Norfolk, Va Age: 35 Posts: 94 Trader Rating: (0) Feedback Score: 0 reviews	but is it safe to say you will need new rings and hone also to keep those parts going for 500??

07-13-2011, 07:49 PM	#4
240sxwanted Zilvia Junkie Join Date: Mar 2009 Location: Santa Fe, NM Posts: 311 Trader Rating: (11) Feedback Score: 11 reviews	you should be fine up to 500hp on stock internals, anything more than that you have to start building your block

07-14-2011, 01:57 PM	#8
Mi BEAN Leaky Injector Join Date: Mar 2011 Location: Norfolk, Va Age: 35 Posts: 94 Trader Rating: (0) Feedback Score: 0 reviews	Ok then killer. What do you guys think about pistons and rings? what do you look for to reach that goal?

07-14-2011, 08:14 PM	#10
NissanEnthus Zilvia Addict Join Date: Sep 2010 Location: Orange County Age: 42 Posts: 800 Trader Rating: (9) Feedback Score: 9 reviews	You state no bashing but you REPEATEDLY get your answer or INPUT yet you come back with the same question?!....Your gonna stick to your findings SO GO DO IT why do you even create a thread for?? You obviously don't know much about the engine you have So why would you even want 500 HP for??....

07-14-2011, 08:27 PM	#11
blingbling Zilvia Junkie Join Date: Jan 2011 Location: phoenix az Posts: 360 Trader Rating: (0) Feedback Score: 0 reviews	This is hilarious. Alzheimer's boy here needs to fucking read

07-14-2011, 11:57 PM	#13
4x4le Zilvia FREAK! Join Date: Nov 2008 Location: Manchester, Tn Posts: 1,253 Trader Rating: (1) Feedback Score: 1 reviews	gt35r on 23 psi. freddy im, jgy fuel rail. Tuned on nistune Now this is with a calabration that is closer to a dyno jet reading, and the customer is going to dyno on one soon and let me know his results. do your tuning on a dd, get your numbers on a dj but with a nistune ecu, I did not feel at all that I was at a disadvantage. This thing was easy to tune! We used a z32 ecu and everything about it was predictable, repeatable and consistant.

07-15-2011, 02:17 AM	#14
bardabe Post Whore! Join Date: Aug 2005 Location: SoCal Age: 31 Posts: 4,716 Trader Rating: (10) Rides Gallery: bardabe Feedback Score: 10 reviews	^^^ Nistune FTMFW. I need to order a couple more tomorrow. __________________ Review Thread

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