JaNusSolSumnus

Alright, my engine is out and I seem to be putting the FD on a long vacation while rebuilding the motor... so why not do all the good upgrades that are easy to do while the motor is out....

Here is what my car has modifications-wise so far.

Pettit intake (hacked up)
Bonez hardpipes
Enfini Y-pipe
SS downpipe
SS midpipe
ACT S/S clutch
Racing Beat 9lb flywheel
M2: Stage 3 ECU
Koyo Racing radiator
Pettit AST
Simplified Sequential + FPR solenoid still installed (all silicon lines)
No airpump
TB coolant bypass (I'm going to have the nipple removed and sealed on the engine block as well as the water pump)
New Mazda Tstat, new Mazda fuel filter, new Mazda FPD
Optima 51r battary + turbojeff tray (My favorite part under the hood. lol)
Defi boost guage
Defi water temp gauge

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I have some parts already planned and or ordered that havent arrived yet as well...

Custom SMIC setup (Greddy style)
Walbro 255lph pump (Hi-flow + 12v mod)
SS oil metering pump/injector lines
Underdrive pulleys (waterpump + alternator)
Porting WG (possibly install larger flapper door if possible)
Ceramic coat exhaust manifold and turbine housings
poor mans boost controller OR Hallman controllers
Remove double-throttle body blades completely
Essentric-shaft solid thermopellet

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Are there any other mods I should be doing to improve reliability, maybe clean things up a bit? I'm keeping the twins, in fact other than maybe adding a HKS Twin-Power and maybe a PFC for better security I am done with under the hood performance.

I'm adding more info later.

Thanks,
~Kris

JaNusSolSumnus

Additions I left out:

My injectors are going to Witchhunter for cleaning and flow matching

I was considering if I should upgrade my fuel system or not (I'm quite paranoid now after loosing my motor) and I have considered upgraded rails, rising-rate FPR and a fuel pressure guage. Would I be wasting my time with this or is it a sound idea?

My car will never be a track demon or making 400rwhp, I'm actually quite happy at 12psi on the twins, I just want to keep it safe so I'm looking for mods I may have overlooked that can improve upon whats already there, so I dont have to worry later.

Thanks,
~Kris

Mahjik

iTrader: (1)

Well, you are welcome to take a look through my thread to see if there is anything to spark an interest on doing for your car:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/when-engines-break-pics-411874/

ptrhahn

iTrader: (9)

Give 'er a mild street port, go for the upgraded water seals, and get the ported oil/water passages... make sure everything is new.

7racer

you might want to drill a hole in the thermostat if that hasn't been done already.

If you have the money, and since you mentioned the upgraded eccentric shaft, you might want to consider cmpetition bearings for better oil flow.

also, ala maxcooper, consider ceramic coating the rotor faces.

JaNusSolSumnus

Thanks Mahjik, I'll give it a good read.

No porting this time around, I still have somewhat of a budget, otherwise a PFC would of already been installed. If I ever loose the motor again (hopefully not for several years) it will get some good porting done for sure. As for the bearings, all my bearings were in tip-top shape so they will be reused (My motor only had 20k on it; and it wasnt the motor's fault that it blew) ...I may replace the thrust/needle bearing up front and a new pilot bearing is already on the list... (TO bearing only has 3k on it so it's staying)

I considered ceramic coating the rotor faces but it is well over 100$ per rotor isnt it? I was told that this improves the burn quality quite a bit of the fuel when this is done though -- which interested me.

You mentioned upgraded water seals, where can I get these and what is the improvement? I was originally just going to order my soft seals from McMaster-Carr (73$ for the lot of them) -- I'm trying to get all Mazda hard seal parts but may go RotaryAviation for the Apex seals... oh yes, and what would drilling the tstat do? I heard of people doing this for extra flow or when one was starting to fail and they didnt want to replace it but why drill a hole in a well functioning one?


Thanks guys I'm liking the ideas so far,
~Kris

JaNusSolSumnus

bump

JaNusSolSumnus

bump, hoping to find some other info I may have overlooked here from previous threads and websites...

My main concern is the fuel system and the turbos.... my turbos only have 20k on them, I want to port the wastegate, ceramic coat the exhaust housings and do whatever else I can do while they are out.... the fuel system is another thing I'd like out of the way now... as it stands now I'm just cleaning up stock stuff and not upgrading.... not sure if that is the best path for me or not though.

What is worse is that I'm concerned how my stock port motor will be with a stock fuel system and the M2:stage3 but I may also get some REALLY mild porting too which I've been told is fine with this ECU but with the free-flowing exhaust too I dont know. Yet another reason I want to get as much flow and response from the wastegate as possible....

Thanks,
~Kris