I am considering changing my 94 FD engine to the 99 spec 280bhp enigne. the workshop told me that I would need to change everything to 99 spec ie the ECU extra in order to get the maximum result. He also said that it would work by just changing the engine coz all the wiring in my 94 is diff fromt he 99 spec. Is this true? has anyone here doen this before?

 

not worth it...the engine is the same for all FD rx7s...the diff is the turbos

 

my friend has a 2000 engine/turbos in his 93 fd. i believe the mechanic used all the US electronics etc. and just used the turbos and block. that is the easiest way i believe. he uses an m2 ecu with it. his usename is "calsonic". mail him for more info. but like the guy above said the only real difference is the turbos.

 

Just performed the swap. How much is he charging you? The problem in malaysia is that they refuse to sell you separate parts. Is either you take it or leave it sort of.

 

ya, if the real diff is only the turbo, then if i juz change the turbo, it will be alright, right?

 

yes

 

The real difference isnt even the turbos. Its the fact that they dont have a pre cat and they run a Efini Y pipe means they flow better.....which makes sense cause thats basically exactly what happens when you put a dp and Efini Y on a US spec car. The boost jumps to 11psi and you make about 280hp....which is about 18-20rwhp more.

STEPHEN

 

wtf the change just isn't the turbos! then how come everyone doesn't just do that and be like i got a 99spec FD. For sure you also need to change you ECU, and 99spec does have a different y pipe. so, you'll need that and you'll also need a lot of other things. And the engines itself are different too. ANd power steering's on the other side as well as the AC (well i think the AC is)

 

the engine is the SAME

 

the ac and ps are on the same side as us spec. the engine assy is the same too. they use the "efini" y pipe (same as 96+). the differences in the 280hp engines are, the ecu, the dp and muffler, and the turbos.
the 99+ cars have a totally different vacuum system, with about 10 vacuum lines.

mike

 

In 99+ Mazda also put a special coating on the rotor housings to reduce wear. different part# from the older housings, if anyone is interested I can dig it up for you just pm me.

 

IMO just get the rs/rz turbos

there not the same, revisions wre made on the system that sprays oil in the combustion chamber to lubricate the apex seals, also the stationary gears were reenforced, the ports are different and the injectors are different too...

 

I don't think the engine is the same...

 

oops, didn't finish....it has stronger seals, and also the oil shooters (the injecters for apex seals) are little bit smaller so the oil metering pumps WORKS unlike the earlier spec. Of course turbos. the Computer i believe is 16bit instead of 8 bit of the earlier spec. When I say earlier spec i mean both US and Japanese spec. Also the EGRs are out... but i have heard that edmission controls does little little effect on the engine's performance.

-joe

 

So the conclusion is to change the whole system? Would the 16 bit ECU have more HP than the 8 bit?

 

jap spec FDs had the 16 bit ecu since 96

 

The motors are different. See this...

http://www.sae.org/automag/global_viewpoints/01.htm

 

Engine lubrication capability was enhanced, but that seems to be the only difference.

 

Buggered if I can spot the difference between a 92,94 (230HP) and 96(230-265HP) y-pipe. What's the difference? They all look exactly the same to me

-pete

 

could the oil injection for the apex seals be changed from the older system to the newer?

 

im in malaysia kl...thinking of buying used rx7...which lot of people said not a good idea....any suggestionsss????

 

The lube system is not changable but you might be able to compensate by pre-mixing oil in gasoline like for a 2 stroke engine.

 

I do not know what the situation is in KL but here in the US the RX7 is considered a car for the enthusiast. That means you should be willing to fawn over it, a lot. If you are willing to spend the time and money it takes to keep the car honed, it is a rewarding experience.

 

If you upgrade the turbos to 99-spec, can you also simplify the vaccuum lines with just 10? How can you simplify the vaccuum lines with sequential setup?

 

Finally someone with the truth!