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350z engine

Old 01-07-2013, 07:06 PM
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Originally Posted by RIWWP
Lucky,

A Mazda Reman, if you just buy it from them with no warranty or anything, is about $1,800 to $2,500, depending on what kind of price a dealer will give you and if you can get any discounts under Mazda's Motorsports program. If his was under warranty, then he wouldn't have paid anything for the engine.

However, Mazda remans are pretty crappy in quality on average. For roughly $3,000 + your old engine you can get a solid, dependable, high quality rebuilt engine from Mazmart, with several Mazmart improvements already upgraded on it. Barring a cooling system failure (which would kill any rotary), I would fully expect Mazmart's engines to last at least 100,000 miles. Mazmart is in Georgia, which isn't absurdly far for you, and can probably do the pull and re-install for you for a very reasonable price if you drive the car up there.

For $5,000, you are entering REALLY high quality rebuilds with additional work such as different seals and porting work.

Any decent repair shop should be able to do the motor replacement for about $1,000 or less in labor. Many could get it done in far less time than that. One shop I know charges about $250 to pull, $250 to install (MD, your IP says Kansas, not Miami though). Dealer prices are JACKED through the roof on so much stuff, don't take their prices as a baseline for anything.

Or yes, sell the RX-8, add that cash to your current cash, and get a mid-level mileage G35 for less than $10k.
Don't think they have those 3K engines anymore

5K+ it is, and it's 90% new parts.
Old 01-08-2013, 06:09 PM
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thanks to my friend..i saw him at school today..didnt have his number..he has an rx7 and the only place he takes his car to get it fixed is someone whom he recommended me which he seems to know a lot about rotary engines ..i just took my car over there and he said that he can rebuild my engine for $1100 for everthing..taking it out dropping it back in..new apex seals..etc..of course..you never know until you break it apart..when he took a look at my car he said that it has low compression because the car takes 4-6s to start it up and sometimes white smoke comes out of the exhaust..he said that rebuilding it will fix those problems..if i decide to let him rebuild my engine..what parts of the engine need to be changed other than the apex seal?
Old 01-08-2013, 06:11 PM
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/\ shouldn't your 'expert' know that ?
Old 01-08-2013, 06:12 PM
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Well, you get what you pay for.

Replacing just the seals usually gives you a ~10,000 mile motor before it needs rebuilding again. Housings and irons are still worn.
Old 01-08-2013, 06:21 PM
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Originally Posted by nycgps
5K+ it is, and it's 90% new parts.
been saying this is the only correct way to do it for years ...
Old 01-09-2013, 12:00 AM
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TX

Originally Posted by RIWWP
Im fairly sure thats not accurate 9k, but not 100% sure. Id have to defer to Paul
Your not sure Expo1's engine failed in under 50,000 miles or your not sure Mazmart current remans are Mazda remans?

Originally Posted by nycgps
As far as I remember, the engine he got was using used parts.

That's the reason why Mazmart stop selling them.

correct me if I'm wrong.
All I know is they rebuilt it and it failed prematurely. Not passing blame just pointing out that RWWIP's claim on how long they will last is just his opinion based on his zero knowledge on what a Mazmart reman even consists of.
Old 01-09-2013, 12:09 AM
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say goodbye to your 50/50 weight distribution. Wasnt that the point of owning the 8? -_-
Old 01-09-2013, 01:13 AM
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Originally Posted by Luckyboii69
thanks to my friend..i saw him at school today..didnt have his number..he has an rx7 and the only place he takes his car to get it fixed is someone whom he recommended me which he seems to know a lot about rotary engines ..i just took my car over there and he said that he can rebuild my engine for $1100 for everthing..taking it out dropping it back in..new apex seals..etc..of course..you never know until you break it apart..when he took a look at my car he said that it has low compression because the car takes 4-6s to start it up and sometimes white smoke comes out of the exhaust..he said that rebuilding it will fix those problems..if i decide to let him rebuild my engine..what parts of the engine need to be changed other than the apex seal?

1100 including labor to remove/rebuild/install?

good luck man

Just to let u know, a new set of stock soft seal, a new set of new OEM apex, new set of side seal, springs, etc cost WAY MORE than 1100

Expert my ***.
Old 01-09-2013, 01:17 AM
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Originally Posted by 9krpmrx8
All I know is they rebuilt it and it failed prematurely. Not passing blame just pointing out that RWWIP's claim on how long they will last is just his opinion based on his zero knowledge on what a Mazmart reman even consists of.
as far as I remember it was just a rebuild with used housings and such. well you get what you paid for.

I rebuild my FC engine with completely new housings and irons, I went Ceramic Apex so might as well go all out and use new housings. Even I use stock OEM Apex I still gonna just new housings.

if I have to rebuild for people, I will at least Re-nitrite the Irons and new housings.
Old 01-09-2013, 02:33 AM
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Originally Posted by Brettus
/\ shouldn't your 'expert' know that ?
he knows but i dont..


Originally Posted by RIWWP
Well, you get what you pay for.

Replacing just the seals usually gives you a ~10,000 mile motor before it needs rebuilding again. Housings and irons are still worn.
what other things do you recommend me to replace? he knows what to replace but i just want to know that way i can ask him if he replaced them or not and i want to know what he is talking about



Originally Posted by nycgps
1100 including labor to remove/rebuild/install?

good luck man

Just to let u know, a new set of stock soft seal, a new set of new OEM apex, new set of side seal, springs, etc cost WAY MORE than 1100

Expert my ***.
never said he was an expert but a new set of oem apex is only $300 bucks..a set of side seal is $180 and the side seal spring set is what? $90 bucks? it could cost more than $1100 if i need to change the housings..irons and whatnot
Old 01-09-2013, 03:17 AM
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In most cases NEVER reuse Oil Control Rings $300, Springs $80 and O Rings $80 (these fit on/in Rotors)...plus Cut Off Rings and Springs $150...there is another $600....

PLUS Apex, Side and Corner Seals and Springs, and hoping Rotors can be re-used?

Full Gasket sets...$500.

Rotor Housings (usually needed) $1500 for 2.
Machining of Irons,...or new, $1800 for 3 new.

All adds up...plus labour.

BTW: Just for the record, given that OEM Mazda parts in USA have increase by around 35% over the past 18 months, then it is virtually impossible to do a rebuild for $1100, unless the repairer is sitting on large new parts stocks at the old prices....even at old parts prices I call it impossible.
Old 01-09-2013, 08:18 AM
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Originally Posted by ASH8
In most cases NEVER reuse Oil Control Rings $300, Springs $80 and O Rings $80 (these fit on/in Rotors)...plus Cut Off Rings and Springs $150...there is another $600....

PLUS Apex, Side and Corner Seals and Springs, and hoping Rotors can be re-used?

Full Gasket sets...$500.

Rotor Housings (usually needed) $1500 for 2.
Machining of Irons,...or new, $1800 for 3 new.

All adds up...plus labour.

BTW: Just for the record, given that OEM Mazda parts in USA have increase by around 35% over the past 18 months, then it is virtually impossible to do a rebuild for $1100, unless the repairer is sitting on large new parts stocks at the old prices....even at old parts prices I call it impossible.
what would be the benefits to have the housings and the irons replaced? my engine hasnt overheated..yet..how about $1100 just for the apex seals replaced? just wondering
Old 01-09-2013, 08:24 AM
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You could go ahead and put new apex seals in whenever you regularly change your oil, or you could do it right and have an engine that will last you a long time.
Old 01-09-2013, 09:10 AM
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Originally Posted by nycgps
as far as I remember it was just a rebuild with used housings and such. well you get what you paid for.

I rebuild my FC engine with completely new housings and irons, I went Ceramic Apex so might as well go all out and use new housings. Even I use stock OEM Apex I still gonna just new housings.

if I have to rebuild for people, I will at least Re-nitrite the Irons and new housings.
I agree.

But depending on what builder you talk too and what day of the week it is you will get totally different answers from each one. The "guru" of porting told me that installing new housings would not be necessary and would not increase the reliability of the engine (I quickly crossed his name off my list of potential builders). So basically unless you really understand what it takes to rebuild a Renesis reliably, you are unfortunately at the mercy of your builder and understandably you would go with whatever they recommend.
Old 01-09-2013, 10:08 AM
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Originally Posted by 9krpmrx8
Your not sure Expo1's engine failed in under 50,000 miles or your not sure Mazmart current remans are Mazda remans?


All I know is they rebuilt it and it failed prematurely. Not passing blame just pointing out that RWWIP's claim on how long they will last is just his opinion based on his zero knowledge on what a Mazmart reman even consists of.
My understanding of their rebuilds was that they build them to specs superior to original factory, and given the reputation and reliability of the company as a whole, I would struggle to believe that Mazmart's remans are inferior to better side of factory spec engines that can make it to 100k. (all of this is out the window if it fails for another reason, like a stuck thermostat or jackamole tuning). I am unsure of the actual contents of where they source their engine material, and because of that I know I can't firmly stand behind my understanding. I know that used parts are entirely likely to be used, though just the fact that used parts are involved doesn't automatically mean inferior results, proper lapping of the irons is an example, so I don't automatically write off the entire set of engines.

I am not contradicting your note on Expo1's engine. I would also expect that Mazmart would correct and improve deficiencies found by a customer, unlike Mazda rebuild facility and other unnamed vendors.

I would have to defer to Paul if he wishes to detail what all their builds entailed. I would still buy one of his engines over buying a reman from a dealer.
Old 01-09-2013, 10:30 AM
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No doubt Mazmart/Paul are great (I have purchased plenty from him/them) but without knowing what exactly goes into a rebuild, you really can't assume that their rebuilds are any better than a Mazda reman. I would take a Mazda reman over quite a few builders engines any day of the week ( and I have had two Mazda remans only last 100k between them both). Especially if they are just Mazda remans with RE-medy products installed on them.

Now if they are taking apart Mazda remans and rebuilding them (seems odd that they would do that) then maybe, but with Rick Engman no longer building them then who knows what type of rebuild is being done and who is doing it, and their qualifications.
Old 01-09-2013, 03:31 PM
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Originally Posted by Luckyboii69
what would be the benefits to have the housings and the irons replaced? my engine hasnt overheated..yet..how about $1100 just for the apex seals replaced? just wondering
The builder is not going to really know until Engine is out and pulled apart.

The 'benefits' are back to factory spec, but more importantly compressions/performance/economy/longevity.

Rotor Housings could have chrome peeling off, could have scouring marks (groves) in.
And you could possibly have a warped housing even if not overheated.

Irons, again provided nothing has come apart internally to mark them, you won't really know until apart.

I just can not see where you can get close to $1100, unless you do the job yourself.

As others have said, doing it on the cheap in more cases than not will not give you longevity...

Ask 'RotaryResurrection' about cheap re-builds.
https://www.rx8club.com/tech-garage-...w-pics-178937/
Old 01-09-2013, 03:46 PM
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Originally Posted by nycgps
Don't think they have those 3K engines anymore

5K+ it is, and it's 90% new parts.
This is true...

Any Mazda OEM Parts are a lot more expensive today than a few years ago.

As you know M8, some parts just has to be bought from Mazda...or a seller/agent who has to purchased them from Mazda anyway...ie. Mazdatrix, even Atkins.

Parts like, Rotors, Rotor Housings, Irons, E-Shafts, like 90% of engine.
Old 01-09-2013, 05:12 PM
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Originally Posted by ASH8
This is true...

Any Mazda OEM Parts are a lot more expensive today than a few years ago.

As you know M8, some parts just has to be bought from Mazda...or a seller/agent who has to purchased them from Mazda anyway...ie. Mazdatrix, even Atkins.

Parts like, Rotors, Rotor Housings, Irons, E-Shafts, like 90% of engine.
how much roughly would a rebuild engine cost?
Old 01-09-2013, 05:16 PM
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Somewhere between $1,500 and $10,000.

Seriously. Many factors go into it.

A) Until you tear it apart you have no idea what of the major pieces need to be replaced
B) Once you have it apart, you could replace the bare minimum for a shoddy engine or have it completely built by a top notch builder with porting, seal changes, water passage changes, etc...

It's very very very flexible.

No, it's not an answer that many people like hearing.
Old 01-09-2013, 06:58 PM
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Originally Posted by Luckyboii69
how much roughly would a rebuild engine cost?
M8, I don't get it ...WHY do you keep on asking for the same information....

I posted what are the OEM (todays) costs for most of the parts to do the job properly, although 3 Irons would not normally be replaced.

BUT as RIWWP said and as I have said before, UNTIL, repeat UNTIL you have the engine removed and disassembled you will not know for certain what the cost would be...contact RotaryResurrection he will do a good deal, tell him your noticed his threads..

You are in Florida?...get Paul from Mazmart to give you a quote to ship you a re-built engine, all you need to do is have it installed.
Old 01-09-2013, 07:02 PM
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Originally Posted by Luckyboii69
never said he was an expert but a new set of oem apex is only $300 bucks..a set of side seal is $180 and the side seal spring set is what? $90 bucks? it could cost more than $1100 if i need to change the housings..irons and whatnot
*facepalm*

See guys? this is the exact reason why Rotary has such bad name :

- ignorant owners who never bothered to "get to know their car"
- and stupid *** "experts" all around, giving bs "advise" and does all kind of shitty *** build.

Simple does not mean it's Easy. What part of that people don't understand ?
Old 01-09-2013, 07:06 PM
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Originally Posted by ASH8
This is true...

Any Mazda OEM Parts are a lot more expensive today than a few years ago.

As you know M8, some parts just has to be bought from Mazda...or a seller/agent who has to purchased them from Mazda anyway...ie. Mazdatrix, even Atkins.

Parts like, Rotors, Rotor Housings, Irons, E-Shafts, like 90% of engine.
Japan just start printing money again ... err I mean monetary easing, Dollar to Yen went from Holy mother Fker 76(lowest) to now 88(today)

so HOPEFULLY parts from Japan will get cheaper ... *quote*hopefully*quote*
Old 01-09-2013, 07:16 PM
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Originally Posted by nycgps
Japan just start printing money again ... err I mean monetary easing, Dollar to Yen went from Holy mother Fker 76(lowest) to now 88(today)

so HOPEFULLY parts from Japan will get cheaper ... *quote*hopefully*quote*
Yes M8, I noticed this, since the new (old) prime minister has been elected in Japan 2 weeks ago and stating that he wants the Bank Of Japan to currency intervene....he wants to see the Yen @ around 100-110 instead of 0.80....already @ 0.92 for the Aussie Dollar, not so much for USD.

But, I could never understand how the Yen got stronger after Tsunami, and why for 20 years the Japanese Government has allowed their currency to KILL off local manufacturing...look at Sony, most is made in China/Malaysia.

But yeah, parts and cars should at least stabilise and Mazda might make some money from the cars they export from Japan...but you can't win, it also makes some imported parts Mazda use in Japan assembly more expensive.
Old 01-09-2013, 07:30 PM
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I don't wanna start a political war here, but we all know how this **** first started. NO one to blame but US

Anyway, it will be fuxking cool if YEN can really go back to 100-110, that's same as when I first visit Japan back in 1999! w00t ! Great for travelers !

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