stock turbo been running 13psi all week

[jrb92se]

rb25det s13 : so i got my boost gauge hooked up properly and went out for a drive and was hitting 13psi ive had the m.b.c. set the same for about a week and ive driven about 500 miles or more do you think i couldve caused damage to the turbo?i hear everywhere the stock turbo is only good for 14psi safely so could running at 13 for so long hurt it too?the other night the exhaust side of the turbo was red hot is that normal?

[USMCgetsome]

take off the turbo inlet pipe and check for visual damage and shaft play. if it doesn't make boost anymore then you know your turbo has died. So don't worry cause u aren't there yet.

[jrb92se]

i really dont think it pulls like it should but this is the only rb powered car ive been in ive got it set at 10psi now and my friends 95 bmw m3 is dead even with me if not a little faster im thinking that at 10psi with the walbro 255,front mount,and 3inch exhaust that i should be beating the crap out of him i know that sounds gay but he has the only comparable car (power wise) to mine that i know and we cruise together alot on the way from work and weekends, i keep up for sure but i think i should be ahead all the time. im estimating ive got around 280hp (@crank) so im putting down an estimated 255-265 ive never dynoed the car so im not sure on those numbers theyre just estimates from the upgrades i have and what the guys at xat and z-fever have told me. im sure i have some vacuum leaks how badly will that effect the way the car runs?

[klh6686]

you say you have a walbro, but do you have a suitable Fuel Pressure Regulator and gauge? with the walbro your car will run plenty rich w/o a FPR and rich isn't the best condition for power...

[rustbucket]

Ive had turbo cars that glow red on the exhaust side of the turbo. Havent driven mine enough to notice yet. As long as the exhaust manifold isnt glowing red I think youll be ok. Just make sure you idle the car for a few mins before shutting it off. I havent seen the compressor map for the stock turbo, so I dont know the efficency range. But I can tell you more boost is not always better. The turbo's life will not be very long if you push too hard. Be it bearings, seals, compressor or turbine wheel, something will give. (first hand experience)

[Chaos the Xile]

Make sure that you check all of your vaccume lines as well...

[jrb92se]

with a nismo fpr you have to install some kind of a gauge so you can set the fuel pressure correctly right ? isnt the correct pressure for that like 45psi at the gauge or something i think that i read that somewhere. ive got the mbc at 10 psi but thats not so bad. i have a replacement turbo already i bought it for my ka-t that never was but its an rb25 turbo. and the manifold was glowing red also. i should own that god damned m3 rich or lean or in reverse
Modified by jb96s14 at 4:35 PM 8/9/2006

[klh6686]

with a nismo fpr you have to install some kind of a gauge so you can set the fuel pressure correctly right ? isnt the correct pressure for that like 45psi at the gauge or something i think that i read that somewhere. ive got the mbc at 10 psi but thats not so bad. i have a replacement turbo already i bought it for my ka-t that never was but its an rb25 turbo. and the manifold was glowing red also. i should own that god damned m3 rich or lean or in reverse

Modified by jb96s14 at 4:35 PM 8/9/2006

Yea you need a gauge to make sure you set the Fuel pressure properly. I believe it needs to be ~43 PSI w/o the vacuum line hooked up, then under vacuum it drops to ~35ish. Nismo FPR is your easiest route and then whatever fuel pressure gauge you want. I went with a B&M FP gauge for like $30 off of jegs or something like that.

[jrb92se]

what fpr is everyone running if any i searched in the rb forum but came up blank should i definetly get the nismo or is there a better option

[Darius]

Nismo is pretty standard for the stock fuel rail. You can run an aeromotive fpr for a little more, but you'll have to run fuel lines to and from it. That's the route I'm planning on going in the future when I get an aftermarket fuel rail.

[rbsileighty]

I'm running a SARD... NISMO FPR is a good deal...

Get a gauge, and like someone said... 3 bar with the vac line off (~44.1psi)

Turbo should be ok at 13psi... but if this is a RB25... be careful pulling out fuel (esp on a hot day)... I wouldn't worry about the turbo at that psi as much as I'd start to worry about popping the motor... or start filling up with 100 or 110...

decent readhttp://www.faqs.org/faqs/autos....html

Don't forget 25's are 9:1... and that octane at a shared pump (87-9x) isn't always that consistant...

[eh?]

Turbo should be ok at 13psi... but if this is a RB25... be careful pulling out fuel (esp on a hot day)... I wouldn't worry about the turbo at that psi as much as I'd start to worry about popping the motor... or start filling up with 100 or 110...

decent readhttp://www.faqs.org/faqs/autos....html

Don't forget 25's are 9:1... and that octane at a shared pump (87-9x) isn't always that consistant...

13psi stock turbo/ ecu is wayyy to low to worry about popping the engine. If anything it's way too rich due to the stock ecu going into R&R...

I had mine @ 13psi 50 trim t3/t4 a lil over 12:1 afr at the top end for a while before I corrected it... no issues.

[rbsileighty]

To clarify my point... I would worry about the higher boost level's effect on the motor before I worried about 13psi on that turbo, as 13 psi shouldn't be to much for it... 14-15... maybe pushing it, but 13 is no big deal depending on where your boost reading is being taken.

Check the boost pressure at the turbo since your manifold pressure will be at least a little bit lower than the pressure the turbo is actually seeing.

The key point is it's running rich now... so just keep an eye on things once you start pulling fuel out at raised boost pressures... I would not advise just raising the boost to the turbo's capability blindly

[jrb92se]

i think im just gonna save some money and take it to the dyno at xat or fever and have them tune it right for me i want to beat my buddy's m3 and think i just need a proper tune i should be running about 280hp (crank)with the setup i have now but i dont pull away from him at all i think i should be faster