neil, i just looked and its metal sorry though no picture

 

Got a shop down here in the southern hemisphere that installs NRS in the brand new crate engines, also does a huge streetport, and clearances the entire block...
He found a number of faults in the new engines as well that needed fixing (Lots of burrs inside the block, incorrectly installed seals etc....seems Mazda doesnt have very high quality assurance whilst building these rotary engines
check www.riceracing.com.au

With the value of the Aus dollar it would probably be pretty cheap for you guys...

 

I fully agree with you on that but, I personally see no reason to go with a completely new engine unless your your hoping it will last over 100k like my original engine did. Realistically of all the Fd's ever built, maybe only 1% have reached that threshold. What we really need is for the rebuilds to come from Japan instead of Williams Technology.

 

Hmm maybe I need to retrack my last post about Mazda building stuff.

 

That equates to about 140 FDs(US statistics)! I'd bet more than that have gone over 100K miles on original motors.

My buddy has a 3/94 build date R2 just like mine that he bought in 97 w/30K miles. Never has had the 3K hesitation unlike my car. He took it up to 100K miles as a daily driver and drag raced it for some time too. Open air mods, stock ECU, never did any reliability mods, beat the crap out of it and it finally let go a little past 100K. We joke about how the Mazda employee who assembled his original engine was like a highly skilled, old world craftsman who descended from a lineage of swordsmiths who made blades for the samurai. I jokingly commented to him that I hope this guy is still employed there and made these last bunch of motors as well.

 

I think more than that made it to 100k on original motors.

That's sort of why I brought up AI. It is my belief, although this may not be true, that the short-term life of rotaries can be blamed primarily on HEAT.

 

Just FYI - There were still 8 left as of Tuesday. Ray is trying to get 5 more.

As far as the core charge is concerned. He said he would charge $3500 + $160 shipping and give me 30 days or so to send in my core. Additionally, he was not concerned with things such as porting, 3mm seals, etc. I think that will be Mazda's problem, not his.

 

heat may accelerate corrosion of coolant passages and coolant o-ring failure, esp if the coolant is flushed infrequently, but heat alone doesn't cause apex seal failure, that's a combination of poor tuning and detonation...there are plenty of FB engines out there with 200k+ miles and they run hot, too

I'm sold on OEM 3 mm seals, so unless those are available in a new engine, I'm not interested

 

Came upon this post on the 300ZX forum and found it interesting in relation to the reman program and someone mentioning earlier in this thread that Mazda is aware of the quality of work coming out of there. Hence, the new 13bs.

http://www.twinturbo.net/nissan/300z...nd-friday.html

 

What about the deformation of the housings due to uneven heat (especially near the plugs) which can cause flaking, apex seal wear, and inevitable failure? This has been identified as the cause of many blown motors. It is even described in the rx7 owner's manual.

I guess my statement was somewhat indirect in that heat also is a common cause of pre-ignition and detonation. But it is those that actually do most of the damage.

 

not just that, but they are taking the cores we trade for the new ones and will be rebuilding them at a DIFFERENT FACILITY than they previously have been manufactured. I believe they are trying to breath live into their reman program.

The problem of course, is that they won't be able to use most of the cores we are sending in. As most of them are ported, scored to hell, passage mods, etc.

 

Yes, that is what Ray@Malloy told me..."Mazda is trying to generate interest in the reman program." Looks like that 'Yoshi' guy is there to instruct them on how to build properly.

 

Having gone the brand new motor route from Ray Crowe vs. a reman a few years ago I'd say I don't regret that decision at all. I'm still pulling 17-18psi vacuum at idle and still not a drop of oil on my garage floor. You get what you pay for and in my opinion a new motor is worth the extra money so get them if you still can.

 

Bought mine a week ago(last friday) and had it sent to PFS it was $3800 with shipping and includes shipping it back to Ray. I am having it street ported and balanced and put into my FD. Cant wait to get my FD back on the road. So think there is 7 left .

 

Wow those look great

 

**** i have two fd's that need motors im torn between LS2 both or new 13b from malloy i save money w/ the vette engines!...............hmm

 

where exactly are these motors originating from?

 

Japan

 

From Mazda themselves?
Since they are quite cheap shipped to America, in Australia they would probably be even cheaper.

Does someone bring them in privately? or does Mazda?

 

FWIW, I just had a compression test performed @KDR with 650 miles on the new motor. Front rotor showed 131psi and the rear rotor was 129psi. I put a small vid up on youtube showing the car idle with vacuum and other readings here:
http://www.youtube.com/watch?v=PkgeYeYdMo4

 

I recieved my motor a few weeks ago from Pineapple Racing.

Rob stated that Mazda was indeed trying to breath life into it's reman program, and these engines were most likely all new becuase of the lack of reman parts.

I had Rob open it, and increase the oil flow and tune it slightly with VERY slight porting - still idles at stock and yet flows better.

Here are shots of my engine and it's delivery.

Thoughts?

I see that the flywheel is wrapped the same as another engine from the same group of new ones, after having gone through another builder.

How can this be if the engine was opened for reliability modding by Pineapple?

 

Wow, that thing pulls some pretty ridiculous vacuum at idle!

 

Ray is crackin mine open for a large street port, balancing, and aktins cryo'd seals. I am getting a single turbo kit too. I'll post vaccum #'s and compression #'s when i get mine back hopefully soon. I had it balanced since i have a act street light flywheel and it will be balanced better than stock.

 

wait i tought they had been making engines for the rx7 all the way up to 09 ??

waiiiii t.. these are all v8s ..lol its been soo long since i seen a rotary in a rx7 that i was starting to think v8 originally came in them ! lol

 

damn, the 7 in that video idles SMOOTH.