upgrade that sucker,and never worry again.
sorry to hear your motor went.

thanks Bryant




hey Mike what's up!

I already called Steve :). I told him that I'd be heading up to RnR after I get all of my body work done. Should be around March. It seemed that people (not person) thought my FD was a bumper car from an amusement park or something. My car got hit 3 times in the last year and half. Each hit was more than a 1k of damage.

This is the last one:


http://img.photobucket.com/albums/v4...Picture028.jpg

some chick here at work hit it while pulling out of a parking spot. And she had her truck backed in already. All she had to do was pull out straight :confused:

Luckily one of my friends here at work saw the whole thing so she had to fess up. Honestly I think she would had bounced because she told me she had insurance (she didn't), and my insurance company had a hell of a time in finding her (it seemed that she was hiding from them) until I reminded them that I work with her. :duh:

99% of women can't drive. You should slap that dumb beeyatch for being shady :pow:

++++++++++10^^^^^

Dude I really wanted to.

I'm serious all she had to do was put the truck in D and pull out straight. Since that parking spot that she was in leads directly to the street.

whatever spilled milk now

Just post pics of her computer mouse and call it even :)

Everytime I boost I look at the AFR. If it starts leaning out (which has never happened), I would take my foot off the gas immediately. I think it's way better than looking at boost psi.

so what happens if you are looking at your A/F and something unexpectedly is ahead of you?

I think that 100% watching of the system everytime one WOT's is rather dangerous and unrealistic. If that's what is needed to keep the car from blowing up it would have a for sale sign in a heart beat. Luckily it's not :)

:puke: that's all I gotta say. Other than who ever would take those pics would probably need a few therapy sessions to just get over the shock.

I agree. Gauge staring makes for much more costly mistakes and loss of life. It doesn't matter what gauge you're talking about.

Dave

So, where would you install that pop-off valve?

On your intercooler piping. Greddy sells a flange for their relief valve.



This was the main reason I went with the Pettit Limited ECU to make sure I still had fuel cut at some point.

Man, this brings back memories... I did pretty close to the same damn thing about 2 years ago. Was working on the car, put a slightly bigger pill in the w/g line (to lower the boost), didn't blow thru the line after I put the pill in (it got cocked off to the side and blocked the line), went WOT in 2nd to check primary, transition and secondary boost. Primary hit about 15psi before the transition, transition was lightning quick with no psi drop and secondary came on full bore... pegged the boost gauge at 20psi and it pinged hard before I could even back out of the throttle. But just before it let go, it was SO effing fast. Haha.

Keep your chin up... it's not that bad. A quick rebuild and you are back in the game.

hell yea, i had a similar problem after fixing the first cracked iron, decided to fix an issue with my wastegate flapper and turned the boost controller down to compensate. long story short i didn't turn it down enough and the boost spiked since it was holding better and cracked another rear iron so on went the AI! water/meth ftw!

watching your wideband won't cure this issue, boost spikes occur so randomly and so quick that by the time you let your foot off the gas the damage is already done.

on the upside, i bet it pulled like a som'n'bitch for that one pull. :)

IIRC, I punched it at 3000 rpms, the car felt fast as balls until 5000 rpm, at which point the tires thankfully broke loose and I immediately let off. Peak rpms were 5721 and peak pfc boost was 1.60 kg/cm^2 :)

I finally got around to installing my pop off valve onto the Rx-7. Due to having very limited intake mount points available, I ended up attaching the valve to the front side of my stock mount intercooler via four bolts with lock nuts on the inside (Be careful with the metal shavings).

Setup was pretty simple. In this position, I had easy access to the inside nut placement for the mounting bolts, through the intercooler opening. I used a small piece of rubber to mash between the pop off valve and the exterior of the intercooler.

Once it was installed, it was a simple matter of adjusting the screw valve on the outside for the desired boost level. I think it came set at 13psi, and I adjusted it to 17psi. When it reaches the desired boost level, it flutters open and closed to quickly bleed the air off.

I plan to place some tape over the relief area, so I can tell if it's ever vented.

Here's to never seeing a boost spike again! :bubrub:

http://www.bentarnowski.com/rx-7/Popoff/pop1.jpg
http://www.bentarnowski.com/rx-7/Popoff/pop2.jpg
http://www.bentarnowski.com/rx-7/Popoff/pop3.jpg

-R4tw

very cool! anyway of attaching that to the IC piping close to the TB?

it is pretty dangerous looking at gauges and not the road all the time, keeping an eye on your AFR/Boost/Temps etc, that's why it's a lot safer to just listen to the beeping "warning" sound before it's too late. Set the warning to a lower setting so you have a few seconds to react and lift your foot off the accelerator before something pops. Also a flashing "caution" light is a good idea too because sometimes the car is just so loud its hard to hear anything during WOT, so if you see something flashing, stop what you're doing and check the readings!!

A dramatic overboost is what caused my desire to start a LS1 swap. In my case, it was a faulty MBC which caused the situation.

As others have said before, it could be a failing boost controller, bad wastegate, or a combination of the both. I really regret never installing a pop-off valve, but that would be the safest bet, IMO.

As to doing the LS1 swap -- it's really a lot more economical in the long run, granted you keep your car for a while.

ive seen 17psi before....put it in third and punched it noticed the car was BALLS faster..I was rapping my friends tuned non-seq on my seq through some curves. Then I took a look at the primary turbo spool up and noticed it spooled as high as I wanted it too as long as I kept the gas down and the PRofec was going nuts.

Pull into my drive way and my vaccuum cap had split down the middle to cap off the wastegate solenoid on the backside!

yeah I hear that. Well my car has been in the shop for the last 8 months... I think all the kinks have gotten ironed out.

I stayed rotary, went single turbo, got a pop off valve, 3 bar map sensor, before my final tune I will have AI installed, and fuel cut will be implemented. A blown engine due to an overboost problem will not happen to me again.

fuck it, we just need an f-22 heads up display mounted ontop of the gauge hood that displays boost, afr, and knock.

why are u seeing over 5 psi difference between your profec and pfc?

sorry I just saw this.

I had a stock map sensor. So the the PFC could only read up to 17 psi and of course the profec does not have that limitation

How's the gt35r running now? :)