i think many people would like to know how reliable these engines can be with a proper setup and maintenance. in reality i would like to see how many people have 20k+ miles on their engines pushing at minimum 400whp daily.

20k isn't a huge number but it is a starting point. i know there is probably a few of you with over 50k pushing that level.

sorry dyno queens, this is a daily beater discussion so that people can perhaps get an understanding of what it takes. most of the cars i have built that last require a bit of dilligence on the owners part, not just into the initial build. did you know you should remove and service the injectors about once every 2 years? of course with milder engines this isn't as important.

 

no one? come on, i have already built setups that have easily done this. but i'd rather hear from others about reliability and what has been done.

 

well I didn't post as it didn't pertain to me given that I don't daily my car anymore and I dont have 20k+ miles (more like 8k+). Though my car was road tuned it should still fall within the 400 RWHP or at least really close to it (GT35R @ 15psi). I will mention that 95% of the time the car is at low boost of 12 psi.

I don't do much for maintenance, other than regular oil changes, coolant flushings, new hoses, steam cleaning internals, and keeping a close eye on things. Such as injector duty cycle, egt, afr, knock. I expect my car to last for quite a while (my last rebuilt engine blew at 50k miles due to my wastegate line coming off, and my original one died at 108k) as I still see 16 in hg/mm vacumm during idle. I attest that to my driving habits mostly as I just dont go around flooring it at every stoplight. Dont get me wrong I try to WOT at least once per drive (mainly to clean the rotor housings), so its not like Im afraid its gonna break. Its just the likely hood of getting a ticket increases dramatically the more WOT's runs that one does. Nevermind that I have a vented wastgate. When I gun it I often scare people around me and of course I feel like an ******* when that happens.

Ill be honest this is the first Ive heard of injector rebuilds after two years. Thanks for that.
o

 

i don't have my personal car anymore. but i got some customers with that hp daily driven. and is true what you say. is all about the right stuff,maintenance and tuning

 

Not exactly what you were asking for since I don't daily drive mine and haven't been at 400WHP the hole time. I have about 46K miles since installing my motor in April 2003. The first 39K at 327WHP (ported, full bolt-on stock twins) and the remainder with probably low 400'sWHP (Aspec 500R at 11-13 psi).

Jack

 

My buddy jbust- 7 years 400HP on a apexi RX-6 still running strong.

 

this is depressing ! as my build will be over 400 rwhp im just hoping the precautions im going to take will help make it last

 

i'm sure there's more, well lets remove the daily driven point and just see if more come in with weekend warriors who still get driven a fair amount.

 

Going on 4 years and over 40k miles daily driven (aggressively); BNR 3's @ 18 psi AND 400cc/min of water injection. Compression still tests exactly the same as it was when motor first installed.

 

pre or post turbo inj.?

 

3 years with the car on February, weekend warrior, 400whp on stock twins with race fuel. Still going strong, next mod, WI

 

Approx 30% is fogged in the airbox (pre-turbo) and the balance is injected post at the IC outlet. The pre-turbo injector is fired at around 8# on primary boost; the post turbo injector is subsequently fired during the transition to both turbos.

 

Year and a half on a half bridge 500r at 15psi and water injection. I dont daily the car but when it is driven it is driven pretty hard. Before i lost the water seal i was going on 2 years with stock ports and 500r at 15psi no water injection. Car never over heated, looked like a bad mazda reman reassembly on that seal once i opened it up.

I change my oil every 1500miles, premix with no oil injectors and change spark plugs every 4months or so. Really with water injection, a good tune (biggest key here), and good regular maintenance the motor seems to be pretty reliable at ir around the 400whp mark.

 

Take it one step further from weekend warrior to track warrior and it won't last with water, meth or the popes blessing

In my experience 350 rwhp is the max reliable headache free power this engine can handle if driven properly. Sure you can run around at 1/2 throttle but going full gas to full brake lap after lap there is nothing in the drive line will last at 400 and up power levels.

At 350 this car is insanely fast so unless you're a pro drag racer you don't need more and if you do you need driving lessons

 

In terms of reliability is it better to get 350 rwhp with the stock twins, BNR's, or single turbo? A lot of problems are blamed from the heat of the twins, so it is better to go with BNR's and running them with less PSI than stock turbos, or going single turbo and simplifying the entire system and removing even more heat?

 

^^^^ My new hero! You are doing exactly what I'm planning on accomplishing and would love to see your build/mod list.

 

Around 400whp on a Jspec engine for about 3k miles....LOL

Mileage of the engine is pretty much unknown. Original owner swapped it in a few years ago. It ran extremely strong with the twins and continues to have perfect compression. I will be rebuilding as I plan to turn up the boost with water.

 

i dont know how you guys put so many miles on high power or not. FD's just take way too much gas!

 

My single turbo FD was making 425HP last time on the dyno, now with more fuel and AI going for 500WHP the motor has been in the car since 07 with out any problems. as for gas mileage my Stock FD gets 25+ if i stay out of the boost and my street ported one gets over 20 its how you drive sir

 

wow maybe I need to get a tune. running on the stock power fc map getting around 16mpg

 

I've had two customers do it. One was 30k miles, the other near 50k miles.
The 30k mile car was meth injected @ 23psi, beat on daily. He got tired of breaking axles, and trannies every month and sold the setup.

 

All things considered single turbo is your best bet for track work.

 

what is your cruise AFR?

 

I'm probably somewhere in the 400 ballpark. It's a reliable little booger. Boost has touched 20-21psi on many occasions as well. Sometimes I feel like the motor is taunting me.

 

400rwhp, two different ems, lots of dyno days with probable total 40 full throttle pulls, two drag days, lots of track days and been to DGRR twice with this car and all the way to florida keys and florida twice. over 60,000K. Was a used housing rebuild but all new seals etc. But thats not all full boost all the time. When I drive on the street its pretty slow. A few 20psi runs. Lots of 15psi but generally set at 11psi.

Originally tuned on the E6K by steve kan and interpolated into the E8 by my friend nik. Had three people play with the tune over the years. Now awaiting the installation of the PS2000 but pulled the engine running to get the car painted. Nothing wrong with the engine when I pulled it out but I assume its tired.

Have a new engine build with new houses NRS seals etc etc etc so I expect this one to last longer.