Can you legally put a RX7 engine in an RX8? Emissions wise?

[mike_1985]

Well yes, being in the trade he would know exactly how long it lasts, shouldnt he ?

Edited by mike_1985 on Wednesday 15th October 17:10

[vz-r_dave]

iron block sr20, where the fk did you get that from.

Its alloy and is known for its light weight.

p.s just to let you know

The us spec S13 used the KA24DE engine which was Iron and heavy.

JDM/UKDM used the CA18DET

S14 used the SR20DET

Edited by vz-r_dave on Thursday 16th October 11:27

[pixor]

bigfatnick said:

And with the high fatality rate of rx-8 renesis engines (combined with me being not the most mechanically sympathetic person) i'd be interested to know about engine swaps.

The internet as shown me that in america, australia and greece, lots of people are putting 13b and 20b (and even nissan sr20det), engines in them and hopefully people will soon start experimenting with big v8's, all of which are things i'd be very interested in.

Firstly, there isn't a high fatality rate, that's a myth carried over from earlier rotaries.

Secondly, no-one will ever put a big V8 in! There isn't room. The compact and light rotary allowed Mazda to design a sports car with 50:50 weight distribution and a low centre of gravity. Look at where the engine sits - right back in the engine compartment, low down, and extends into the footwell area! A piston engine just can't fit without ruining the handling, and the handling is what makes the RX-8 so special in the first place.

[IainT]

pixor said:

bigfatnick said:

And with the high fatality rate of rx-8 renesis engines (combined with me being not the most mechanically sympathetic person) i'd be interested to know about engine swaps.

The internet as shown me that in america, australia and greece, lots of people are putting 13b and 20b (and even nissan sr20det), engines in them and hopefully people will soon start experimenting with big v8's, all of which are things i'd be very interested in.

Firstly, there isn't a high fatality rate, that's a myth carried over from earlier rotaries.

Secondly, no-one will ever put a big V8 in! There isn't room. The compact and light rotary allowed Mazda to design a sports car with 50:50 weight distribution and a low centre of gravity. Look at where the engine sits - right back in the engine compartment, low down, and extends into the footwell area! A piston engine just can't fit without ruining the handling, and the handling is what makes the RX-8 so special in the first place.

That's not 100% true - there are a few v8 conversions knocking around and some excellent ones on the RX-7 that, much to the annoyance of us rotary fans, maintain weight distribution and have no significant weight increase.

Sad but true!

[CrisW]

A stock rx7 engine would be hard work. They have horrifically complex pipework for the sequential turbos.

I would suggest buying an RX8 having the engine ported and built (not as expensive as you'd think) and bolt a turbo on. Any rotary engine swap should factor in a reworking (IMHO) and opinion is that that engine will then be good for 60k miles.

Last I looked people were using the later components on the 13b units now which would suggest some improvement.

[vz-r_dave]

IainT said:

pixor said:

bigfatnick said:

And with the high fatality rate of rx-8 renesis engines (combined with me being not the most mechanically sympathetic person) i'd be interested to know about engine swaps.

The internet as shown me that in america, australia and greece, lots of people are putting 13b and 20b (and even nissan sr20det), engines in them and hopefully people will soon start experimenting with big v8's, all of which are things i'd be very interested in.

Firstly, there isn't a high fatality rate, that's a myth carried over from earlier rotaries.

Secondly, no-one will ever put a big V8 in! There isn't room. The compact and light rotary allowed Mazda to design a sports car with 50:50 weight distribution and a low centre of gravity. Look at where the engine sits - right back in the engine compartment, low down, and extends into the footwell area! A piston engine just can't fit without ruining the handling, and the handling is what makes the RX-8 so special in the first place.

That's not 100% true - there are a few v8 conversions knocking around and some excellent ones on the RX-7 that, much to the annoyance of us rotary fans, maintain weight distribution and have no significant weight increase.

Sad but true!

How the V8 must weigh a considerable amount more then the 13b, the 13b sits deep in the engine bay and the V8 doesnt.

I am not so sure about the above comment tbh.