I just wanted a couple of opinions on what to do with my current setup and how I should go about picking up a new motor. I think I have my heart set on an aspec street port, but if anyone has any cheaper places that are reliable as well, I am all ears.

My real question is what I should do with my current setup, sell it? or use it as a core? I am pretty sure that it just took out a corner seal and no really bad damage is done, but I suppose I would only be able to say that for sure if I tore it apart.

This is my first of many motors blown in the future I am sure...

 

well, you have given us any info on your setup, so we cant really diagnose a problem. If you have a full turbo back exhaust i would suggest either replacing the midpipe with a catalytic converter. That or purchase a power fc so you can tune for more boost.

Rotary ressurection has great prices on rebuilds, and i havent heard of any build quality issues yet.

adam

 

buy mine! https://www.rx7club.com/showthread.php?t=523453

 

LSX?

 

Kevin from Rotary resurrection built my street ported motor about a year ago now. I have 8000 miles and its perfect. Ive been meaning to do a compression test on it but I know its strong. I dont have a bad thing to say about him. Cheap and great quality.

Oh and for you next motor just put an exhaust restrictor inline somewhere and that will take care of your creep. I forget who, but somebody is making some highquality ones and theyre only like 10 bucks or somethin.

 

My current setup is as follows:

3" Downpipe
Racing Beat Catback Exhaust
Full Nonsequential conversion
Smog Pump elim pulleys

I just dont understand how I got that bad of a boost creep just puttin around. .I never put it to the wood once. . .just wanted to warm her up.

 

So hold on..Two things..You have a stock cat then?

And judging by your last post, you boosted on a car that wasnt warmed up? Haha, if you did you deserve your blown motor.

 

Are you SURE it was boost creep? You do not normally get boost creep for "putting around" but you get it when you're on full boost, usually near the high end of the RPM range. That does not seem to be the case with you.

It may have been a case of "**** happens", just like when I blew my motor recently, the very first day after I bought it, just as I got into it hard at 3500 RPM. An apex seal broke. I was probably running too lean at the time. Since that incident, I got a wideband and a boost gauge and keep an eye on the boost and mixture levels.

 

check out are engines@ www.rx7store.net

 

I don't think you had boost creep with your mods. You may have had too high of boost for the stock ECU to handle (>11psi) but that would have only been a problem higher up in the RPM range. What makes you think you blew your motor anyway? It's entirely possible to blow a vacuum hose or vacuum cap off and have the car act like a blown motor (low and inconsistent vacuum).

 

Pop the line off the map sensor and some people may think the motor is blown. Matt Hey has a valid point. I heard a loud pop while driving one day and lost a lot of power. Turned out to only be an intercooler coupler. Scared me into thinking my motor went.

 

rotor noise coming from the rear portion of the motor. . . .and minor smoking as well.

my thought was to wait a couple days to let all the coolant and **** dry that I spilled while filling my **** with no funnel and then rechecking all the vac lines.

No I wasnt boosting when it was cold. . it was just starting to warm up when I gave her a lil pedal to make sure my nonseqs were working . . heh

 

I've found I can make max boost just as well at half throttle as I can at full throttle, just not a quickly, so the potential is there wether you give it full or partial.

 

I am going to double check all my vac lines today. . I am pretty sure they are all good to go. MAP sensor was still connected last time I checked

 

When you did your non-sequential conversion did you port the wastegate? That may cause some problems but I doubt it was creep with a cat in place.

 

aspec wont use your internals..at lest your housing. All the engines they build they use BRAND new rotor housings. They are a great shop, i had my engine rebild at banzai racing. Chris did a great job and took pictures of thte entire process for me. He warranties the engine even if you use used housing for 1 year. Both are great shops..


Ive had no problems with my engine and have 6000 miles on it.

 

Yes the wastegate was milled at a machine shop.....

 

 

He should venture into the unknown and be the first FD with a LS7. No that would be a scary car!

 

So you have a ported wastegate and stock cat. What make you think it was boost creep?

 

I really cant think of anything else it could have been. I have heard of people saying that you can still get boost creep with a ported wastegate. I honestly hope its not blown but because I can hear rotor noise, I am pretty sure its done.

Unless anyone thinks that gas sitting from november basically on empty would be the cause, I doubt it tho

 

Are you sure it's not turbo noise and smoke? What is your boost guage doing at idle?

 

I didn't see any type of engine management listed in your mods. What are you using to control boost if anything? And What was the boost creeping to?

 

Well. . this is the dumb thing because I hadnt reinstalled my boost gauge or controller yet. . I was actually resting my arm on my controller while puttin around. I never put it to the wood once. .I was merely letting the car warm up while puttin around my apartment complex to make sure there wasnt any coolant leaks because I had a leak at one time on one of the small hoses in the front of the motor.

Banzai. . .how far are you from Kalamazoo, If I move to Texas I may want to drop by your shop and see what you can do with it. I dont claim to be an expert on the car by any means....so all your guys's thoughts are helping. . thanks

 

An empty fuel tank is the worst way to put up a car, it allows for more area to build condensation. It's always better to fill up and use fuel stabilizer. Just the temerature change from night to day can cause moisture in the fuel tank and of course has more of an effect over longer periods of time. Could have been nothing more than detonation on bad fuel that took out your motor.