NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   13.65 psi, 11.7 AFR, bye bye front rotor (https://www.nopistons.com/2nd-generation-specific-17/13-65-psi-11-7-afr-bye-bye-front-rotor-59906/)

Cheers! 06-14-2006 08:48 AM

I wanted 150,000 miles. I got too greedy and started to increase the boost to compensate for my lack of driving skill. =(

One320B 06-14-2006 10:15 AM

Lol, its ok... I've blown my fare share of motors too https://www.nopistons.com/forums/pub...IR



At least now you get to move to the next level of a rebuild. You plan on doing it yourself first time out, or sending it off/mail order?

j9fd3s 06-14-2006 10:23 AM


Originally Posted by KompressorLOgic' post='824123' date='Jun 13 2006, 10:56 PM

yeah id say it wasnt that big of suprize it let go, especiall running that high of boost on the stock IC, being on the track your running it hard for extened periods intake temps can get real high on that lil IC... not to mention at 132K miles being close to 20 yrs old its no wonder it let go.... it was prolly close to its time to go anyway.



we tuned steves car (e6k) and the ic actually does an ok job, temp goes up, but the scoop works, and they come right down the second you lift. granted with the stock turbo, they are too high to start with....

Cheers! 06-14-2006 08:55 PM


Originally Posted by One320B' post='824176' date='Jun 14 2006, 11:15 AM

Lol, its ok... I've blown my fare share of motors too https://www.nopistons.com/forums/pub...IR#>/smile.png



At least now you get to move to the next level of a rebuild. You plan on doing it yourself first time out, or sending it off/mail order?



I was going to pull the motor out, all the items mounted in the engine bay off and towing it to a body shop to straighten the rad support, replace a fender and paint the engine bay. Both frame rails are missing paint due to failed ABS pump and failed master during the life of the car.



Engine wise: I was thinking of building up the motor myself. Stock ports. But I plan on polishing them up. I also plan on port matching the intake manifolds and porting the throttle body. Send the manifolds out for silver powder coating. I will for sure port the wastegate out as big as I can. Then I plan on port matching the exhaust manifold if it requires it. I may send the exhaust mani out for ceramic coating... not sure yet. I want to run two egt probes in each runner of the manifold. I have a brand new S5TII Turbo sitting in a box downstairs so that will be put to good use.



I'm not sure if I want to run a e6x. If the engine harness is bad, or too many sensors are fubar I may use the e6x so that I can stop worrying about 17 year old sensors and crispy harness.



A lot of work. Especaily when i'm at the stage of wanting to buy a condo

Cheers! 06-14-2006 09:00 PM

Here's a pic of my car when it was still running. She's a bit too nice of a condition to part her out and sell as a rolling shell

Cheers! 06-14-2006 09:06 PM

I want to make 194 rear wheel horsepower on a dynojet to drop a class. This year I was running SGT3 due to rule book changes. I need to drop back to GT1 which I ran last year to still be competitive. I tried to squeeze the turbo for more HP to make me more competitve for 2006, but it didn't work. I blew the motor and even when I was pushing the 13 psi before she blew I only ran down the 4th place car which was a stock FD on Hoosiers.



She dyno'd 208 rear wheel HP on a mustang dyno. People say you get 10% less on a mustang instead of a dynojet? I'm not sure.



What I want is to have a super low boost threshold. Make full boost with the stock turbo at 2500 rpm and be able to hold that to redline. About 9 psi worth.

One320B 06-14-2006 09:46 PM

I fully understand the wanting to drop a class! We went through that with my buddies miata in CSP and SP2... either way, polishing the ports would be a good start, i was going to say do a mild port job, but not if you want to drop back a little. Maybe you should still do the port to help w/ the top end a little and just run lower boost like 8 to 9psi..i don't think you'd make too much over 190whp... you can always dial it back, but at least if the motor is ported some, you could go up too... change classes when you want.



Sweet looking car btw...

j9fd3s 06-15-2006 12:07 PM

on my t2 i cleaned up the casting flash in the intake runners, and made the exhaust port line up with the sleeve (it went down maybe 2mm?) and i had no trouble running .4bar on a stock s5 turbo. it would hold that boost all the way to redline too, so it actually had a powerband over 5000.



other relavent mods, rb turboback, s5 tid, cone filter.



oh and i also polished the inside of the stock tb elbow, its the smallest point in the intake system

One320B 06-15-2006 07:31 PM

Diddo on the polished stock TB elbow.... I still have mine somewhere..i think it's in the back of friends T2...

Cheers! 06-15-2006 09:50 PM


Originally Posted by One320B' post='824430' date='Jun 15 2006, 08:31 PM

Diddo on the polished stock TB elbow.... I still have mine somewhere..i think it's in the back of friends T2...



Stock TB elbow? That is the one that adapts the top mount intercooler to the TB?


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