completely STOCK SR20DET engine with only 3" straight pipe..ok for 12PSI???

[91nissantwo40sx]

the engine is completely stock no changes at all. only a 3" exhaust all the way back with a 4 inch glass pack muffler ( it has no catalitic converter on it) The exhaust is a strait pipe (no resonato) I also have a boost gauge and engine is currently running at 7PSI

I was wondering if i could boost up at 12PSI without changing anyhting?

[idahotuner]

search. that are alot of threads about this.

FMIC Boost controllerwill be needed!

[drftsx]

+ fuel pump. i think youll be leaning your car out.

[91nissantwo40sx]

so pick a Walbro 255 fuel pump first? then im good?

[usdm_180sx]

Did you read the posts? Easiest way to do this, and you will need ALL of these:

1. fuel pump2. fmic (or s15 smic)3. hks actuator

[IanS]

SMICs heatsoak very easily above 9 or 10 PSI

[mowedS14]

Cheap and rather large -http://cgi.ebay.com/ebaymotors...wItem

[usdm_180sx]

Cheap and rather large -http://cgi.ebay.com/ebaymotors...wItem

The ONLY thing guaranteed on fleabay intercoolers is S H I T T Y FITMENT. Get a Greddy M-Spec for $400

[91nissantwo40sx]

The ONLY thing guaranteed on fleabay intercoolers is S H I T T Y FITMENT. Get a Greddy M-Spec for $400

greddy m spec should fit in no problem right? what about battery? id prefer to just buy a smaller battery but which one should i get? any recomendations?

[91nissantwo40sx]

Cheap and rather large -http://cgi.ebay.com/ebaymotors...wItem

will it fit on the S13 no problem? btw i have a Canadian 240sx so i dont know if the front will be the same as the ones in the US.

[usdm_180sx]

greddy m spec should fit in no problem right? what about battery? id prefer to just buy a smaller battery but which one should i get? any recomendations?

Yeah spec m shouldfit perfectly. the piping is nice. Get this battery: http://phase2motorsports.store....html

[jessetang]

You will at least need a smaller battery for a FMIC, or battery relocation since it goes through the stock battery location to the intake manifold. Smaller battery works just fine (I use a Miata battery).

You are asking questions without looking at your engine bay. There are simple, basic knowledge for most FR turbo owners.

[idahotuner]

i use and odyssey pc680 battery i got off ebay, its a dry cell so it is nice and it fits perfectly.

[240trackjunkie]

I've been running a completely stock redtop at 11-12psi for almost 2yrs now, problem free. I think you'll be fine, just don't go above 12.
Modified by 240trackjunkie at 2:51 PM 10/31/2007

[IanS]

I've been running a completely stock redtop at 11-12psi for almost 2yrs now, problem free. I think you'll be fine, just don't go above 12.

Modified by 240trackjunkie at 2:51 PM 10/31/2007

You should go be friends with this guy, I think you would get a long great



J/K

How often do you heatsoak in the hot TX weather, and are you running a stock fuel pump?

[240trackjunkie]

Haha, thanks. Looks like I have a twin brother lol.

Yes, I do have a Walbro pump, 3" exhaust, and HKS bov. So it's really not completely stock but none of that should effect it's ability to tolerate boost.

Actually I've never heatsoaked my smic that I know of. Even after beating on it for a good 15-20min, the intercooler is still cool to the touch (I've actually gotten out of the car to check it lol). Most of my time online is spent reading thread after thread on sr20's. It is well known that stock boost is 7psi but my front clip came with the stock ebc solenoid that brings that up to 11-12. I think that is what the stock Silvia's and 180sx's run in Japan? It seems to me that it would be ok to run a stock engine at that boost level since that's what it was originally designed for?

Modified by 240trackjunkie at 5:17 PM 10/31/2007
Modified by 240trackjunkie at 5:18 PM 10/31/2007

[IanS]

when I had my sidemount that thing would heat soak really bad even at 10 PSI. If it was hot out and I ripped through the gears 2 or 3 times repeatedly all of a sudden I would loose all power, hasnt happened once with my FMIC.

[240trackjunkie]

Individual results may vary, I guess.

[stuntinSR20coupe]

yeah for sure i run 11-12 lbs everyday so far on my nearly stock SR. i have just a greddy front mount and dp and hks bov for approx. 6-7 months no problem.

[godzilla34]

i kno its an old post and not to revive it. but the serching does help in this field. on a stock motor i wouldnt push the turbo past 10 psi, depending on the turbo and intercooler, is depending on heatsoak. not all turbos/i/c's are the same. if you get to hot detonation occurs which ='s bad mojo for the innards

(sorry bout spelling been up for a few days workn, finaly got a chance to chillax)