My RX7SP build up

[RICE RACING]

Originally Posted by Barry Bordes

Peter,

Your setup is the best I have seen. Your idea of making an all around super car the way Mazda would have made it (if they thought they could still sell it) is right on the money.

Rebuild that engine and keep going ahead.

I always say, "Who better to have an engine failure than someone who can rebuild it easily and learn from the failure what new parts or proceedures to use or avoid in the future."

Barry

Been a while since I have posted here, thanks so much for the kind comments

I have been running my new set up for around 76 hours (as recorded on the ECU) covered about 4500km and its been good. This second half of the year I have been concentrating on other things but plan to put a Race Brake set up on the car and run a little more turbo boost pressure (around 22psi) I have it on 18.5psi for around 40 hours use and have proven to myself (lol) that it is very reliable at this setting (~440bhp engine power). I have done in street mode (0-100kmh in 4.40 seconds) 12.42 seconds @ 122mph for 1320ft test (no roll out) when the car was at 1380kg (3042lb) weight (with 100lt fuel and driver).

Not sure if people here are interested? but I have dozens of VBOX power data logs showing things like turbine pressure, turbo speed, boost pressure, rear wheel power output, fuel pressure etc etc.

p.s. I need to ad the original engine was never "toast" despite what you may read on hater forums I changed out the motor for a different specification of port & seal product to my own development. Any pics you may see or apparent correspondence quoted/attributed to me is just 2nd, 3rd hand doctored rumor from (I must add) well documented and proven trolls and haters. It is a shame some people have nothing better to do with their time

[RICE RACING]

Here is one graph, I think I posted one from earlier testing on about 14psi boost? this is the current level which I wanted to do long term durability testing on (not a few track days followed by hidden rebuilds like some people....). I covered over the 50 hours I wanted to do and also tested in very adverse weather conditions (up to 38 deg C, and including heat soak tests then re running at full power settings). It passed all of this perfectly, I had to change allot of specifications for water injection rate, spark advance, and even things like plug gap specifications to cover all operating conditions and environments. Next step is to increase the boost level and do another durability test of around 50 hours (combined street and max output testing, generally equates to about 5000km running).

This is the performance so far on my standard 90-140kmh test.


For the next lot of work I need to take out the open circuit EGT probes which only lasted around 3000km before they went on holiday. Am getting some bespoke ones made (to my specifications) that are more turbo rotary compatible long term while still being fast in response as I require.

Forgot to add from the last posted compression (post #22) test near the top of the page, engine compression now after the near 76+ hours of running is:
Fr
121,123,121
Rr
117,116,114
Not too bad given the high duty running and constant boost setting of 18.5psi now

Here is some pics of me taking RICESP to a local test track a few days ago, did some more traction control development testing and WI hardware tests...