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Thread: F.I. on a Stock Motor???

Started 2 months ago by v5e_nsx
How much power can a stock motor (rods, piston, heads, etc) handle safely?? I plan to go turbocharge on a 91 with 80k miles and have no plan for internal work to be done; just a slap on and tune with an AEM EMS. Anyone had done this before without internal upgrades?? How much power can a stock motor handle?? Thank for any input PRIME!
Site: NSX Prime  NSX Prime - site profile
Forum: NSX Forced Induction and Nitrous  NSX Forced Induction and Nitrous - forum profile
Total authors: 20 authors
Total thread posts: 33 posts
Thread activity: no new posts during last week
Domain info for: nsxprime.com

Other posts in this thread:

clr1024 replied 2 months ago
Some people are running more HP on stock internals but it seems that most are running around 400-450 rwhp on a stock motor.

Thanhnsx replied 2 months ago
Yeah, from what I have researched in the past. safe zone is around 400hp. I am going FI on a bone stock motor also and stock clutch with 130k. Motor feels good so it should be ok. But I'll upgrade my fuel system. I'll aim for little under 400hp.

doc_tai replied 2 months ago
400whp or 450whp with meth injection

Vega$ NSX replied 2 months ago
It's not an exact science and there are no guarantees. There is no magic number. Generally speaking most people will say that 400 whp is about as far as you will want to go without rebuilding the engine. However, I was at 400 whp and I blew my head gasket and crushed a cylinder head. It's not how much power, it's just a matter of how LONG your engine will last. Here's a graph I made: ...

doc_tai replied 2 months ago
true, even stock motor blow up

angus replied 2 months ago
Very true , but yes 400 seems to be the generally accepted #.

v5e_nsx replied 2 months ago
Hmmmmm..... Am i going to be the first up for testing then??? The vehicle is not a weekend nor daily beater.... car sees less the 10 miles a month, if any at all.... If the motor blows up, a better reason for internal works so the wife won't get as MAD !! Goal: 500+hp on E85 race gas w/ stock internal Management: AEM EMS Clutch: Exedy stage 3 We'll see how it goes.... Give me a few ...

doc_tai replied 2 months ago
this guy make over 600whp on bone stock motor but disappear in about a month or so. Never heard back from him or update on how the motor holding up http://www.nsxprime.com/forums/showthread.php?t=96 310

v5e_nsx replied 2 months ago
thanks..... but I wonder how long since the motor was put in and lasted??? Just like most of our stock B18 motor slap on turbo pushing close to 400hp with stock internals.... Once in a while, you do get a lucky block.... thanks for the info.

vsy05 replied 2 months ago
Quote: Originally Posted by doc_tai Never heard back from him or update on how the motor holding up http://www.nsxprime.com/forums/showthread.php?t=96 310 LOL. Well that pretty much sums it up. If you haven't heard from him then he is either in his garage rebuilding his engine or working a second job to pay ...

 

Top contributing authors

Name
Posts
lightguy
4
user's latest post:
F.I. on a Stock Motor??? - Page...
Published (2009-11-16 18:35:00)
Quote: Originally Posted by HIJACKER The biggest issue holding me back is - WHO and WHERE do I turn to for tuning a NSX in the Washington DC area?? NA ? Honda already did back in 91. Save your money.
v5e_nsx
3
user's latest post:
F.I. on a Stock Motor???
Published (2009-10-31 02:59:00)
thanks..... but I wonder how long since the motor was put in and lasted??? Just like most of our stock B18 motor slap on turbo pushing close to 400hp with stock internals.... Once in a while, you do get a lucky block.... thanks for the info.
doc_tai
3
user's latest post:
F.I. on a Stock Motor???
Published (2009-10-30 21:54:00)
this guy make over 600whp on bone stock motor but disappear in about a month or so. Never heard back from him or update on how the motor holding up http://www.nsxprime.com/forums/showthread.php?t=96310
Jack Sparrow
3
user's latest post:
F.I. on a Stock Motor???
Published (2009-11-09 19:05:00)
Quote: Originally Posted by Chris@SoS From our own experience, we are comfortable with the following based on numbers produced from our dyno assuming proper tuning. 91 octane (R+M)/2 stock 3.0L: 400 whp stock 3.2L: 430 whp 3.0L engine with forged pistons, stock rods, stock crankshaft: 500 whp 3.0L or 3.2L engine sleeved, stock rods, stock crankshaft: 580 whp 3.0L or 3.2L engine sleeved, billet rods, stock crankshaft: 650 whp With greater...
BATMANs
3
user's latest post:
F.I. on a Stock Motor??? - Page...
Published (2009-11-10 20:45:00)
Quote: Originally Posted by Biscuit If ya havnt noticed this is an nsx forum. Most people here have about as much interest in your "F"lipping"D"ouche as a push lawn mower. Are you 12? I reposted this line so maybe you might be able to read it and comprehend it. Its probably more finacially sound to procure a hoveround and mount a Pratt and Whitney to it but who gives a shit? Once again, this is a nsx forum and nobody gives...
Biscuit
2
user's latest post:
F.I. on a Stock Motor??? - Page...
Published (2009-11-10 19:57:00)
Quote: Originally Posted by BATMANs Drop a LS in it and it's still cheaper. The NSX was never originally designed for FI. It came out in a time when the word turbos started to mean something in the automotive realm. Squeezing all that FI power from a stock motor will accelerate it's wear and tear. It's probably financially more sound to procure a rolling chassis FD and do a LS swap. U get better MPGs for sure. And the car will...
Duffer
2
user's latest post:
F.I. on a Stock Motor??? - Page...
Published (2009-11-14 09:17:00)
Please keep in mind that anything you do with a NSX performance-wise is going to cost you thousands of dollars. I was originally NA, and I did things like the cold air intake, new headers, new exhaust, hi-flow cats. Anything to eek out some HP. All of that cost thousands. And it was for just some incremental HP gain. You want to do something cheap? Do some weight reduction. Do a search and you will find some creative ways to eliminate excess...
Cozmo
1
user's latest post:
F.I. on a Stock Motor???
Published (2009-10-31 12:35:00)
Quote: Originally Posted by vsy05 LOL. Well that pretty much sums it up. If you haven't heard from him then he is either in his garage rebuilding his engine or working a second job to pay for it. Either way, he has no time to post. Not true.. Last Activity: 10-22-2009 11:24 To me that says "I blew up my motor and I'm ashamed and hiding"
angus
1
user's latest post:
F.I. on a Stock Motor???
Published (2009-10-30 03:21:00)
Very true , but yes 400 seems to be the generally accepted #.
vsy05
1
user's latest post:
F.I. on a Stock Motor???
Published (2009-10-31 12:29:00)
Quote: Originally Posted by doc_tai Never heard back from him or update on how the motor holding up http://www.nsxprime.com/forums/showthread.php?t=96310 LOL. Well that pretty much sums it up. If you haven't heard from him then he is either in his garage rebuilding his engine or working a second job to pay for it. Either way, he has no time to post.

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