it seems like mazda has 2 different rotor machines too, there is one where they come out really gold, and one where they are a more natural iron color with machining marks on the rotor face.



when you buy a new rotor you do not get to choose what letter you get, but the rotor you get is considered to be valid for the application



mike

 

i have a racing beat competition oil pressure regulator. mine is 120 psi on full boost. although its hard to look........ my sender is the original one also. maybe it was replaced by the previous owner though

 

Here in Japan, every once in a while they will show car specials on TV. During one of the Mazda shows I was watching, they actually showed the factory assembly of a rotary. They literally grab parts off of a stack to put the motor together. I could not see any possible way that the rotating assemblies could be balanced sets. I have been told by people that worked at Mazda that the parts in question are all balanced seperately to a standard. I have gone by this rule and all my friends follow this rule without any ill effects.

 

Here in Japan, every once in a while they will show car specials on TV. During one of the Mazda shows I was watching, they actually showed the factory assembly of a rotary. They literally grab parts off of a stack to put the motor together. I could not see any possible way that the rotating assemblies could be balanced sets. I have been told by people that worked at Mazda that the parts in question are all balanced seperately to a standard. I have gone by this rule and all my friends follow this rule without any ill effects. [/quote]

yeah, thats why you can put a light wieght flywheel on the car without it exploding



mike

 

The counterweights are there to offset the weight of the rotors. I don't see how they (Mazda) could drill all of the balancing holes in the counterweights without knowing what the rotor weights will be.



They could balance the counterweights separately if they know what weight rotors will go with them. Maybe they sort the rotors by weight and stick all the rotors of the same weight on a shelf. I don't know how they do it, just guessing.



I'm sure you can ignore all this balancing crap without any ill effects. I did for years. But then again, I don't rev to 10.5k RPMs all day long.



I was already highly jealous of you guys in Japan being able to buy used parts so cheaply, but TV shows about the Mazda factory. Now I'm green with envy. How much of the engine do they build by hand?



j9fd3s - A lightened flywheel can be balanced separately, regardless of the rest of the rotating assembly beacuse it's centred on the eccentric shaft not offset like the rotors and counterweights. Provided it is simply bolted to an automatic counterweight and the counterweight is not changed then the assembly should still be perfectly balanced. If the car is manual and you change to some random automatic counterweight when fitting the lightened flywheel there will be some imbalance.

 

This turned into a " how high can I rev my eng thread"



If you have the money get the SPL, but you will be more than happy with just the KIA. You can get the Kia BB also.

 

ok, I was lookin around and saw this GREDDY T88. How does the KAI compare to the t88 power wise? I havnt seen any pics of the kai, just read about it... anyone have any pics of this turbo?





thanks.

 

Well you know the greddy t-78 is capable of well over 500hp. The t-88 is HUGE like the other turbos, making comparable power in a similar power band. If your goal is hitting 500rwhp, you are better off choosing a turbo that is smaller, something like the t-78. You will have a more usuable power band with less lag, as well as a turbo that is big enough to always have power on tap and will peform well at higher than stock rpms.

 

Go to www.jouleusa.com they have a BP FD with a t51 kia BB and a R32 with a t51Spl. I have a t-88, if I had the money I would of gotten a t51kia BB. They will make about the same power, just with the t51 it will be sooner.

 

Yeah, if you only want 500 hp go with a T66. If you are dead set on a T51 get a BB KAI. But I think just the turbo is like $3000.