No, I do not import or sell any jspec engines. I can only build from what you bring me.

You can view all engines currently available for purchase here.

No, I do not import or sell any jspec engines, and this engine was never sold in the US.

I do not normally sell any used engines, nor JDM/japanese used engines. Any used engine I would get ahold of would be torn down for evaluation and reuse of internal components.

I do not currently sell rebuild seals or kits out the door, and only order what is needed for in house builds.

Over the years the community as a whole has mostly destroyed all the components of these engines bit by bit with big single turbo and drift builds. As a result there is very little good quality usable stuff floating around at this point from which to put together blocks. At the time of this writing I have only a handful of components on hand, not enough to pre-built engines and send them out the door in this manner, only enough to replace 1 or 2 parts in a customer's core I may be rebuilding.

At this point you are pretty much down to having to buy new components one by one from mazda as needed, or spend the ~$9200 for one of those "all new parts" engine blocks that mazda periodically makes available for the REW/FD application (note that as of this writing, these are not available for other applications to my knowledge).

IF you buy the setup listed on my site, there is no core charge.

The topic of core return/exchange really only works for local/regional owners able to deliver their core in person to me in east TN.

Core value is determined based on what inside is still reusable, which cant be known without teardown and inspection. I can't negotiate for a core blindly and pay up front without knowing what's inside it, if it turns out to be a boat anchor then that's just money I tossed out the window.

Truck freight shipping, even at minimum for nearby/regional customers, costs the same as the value of a decent condition core (depending on year/model), say 3-500 bucks. I can't pay for both the shipping and the value of the core that the owner wants to sell me, so thats why it only works out for those who can deliver and wait while I tear down.

That's why I omit the entire discussion for pre-built engines listed on the website.

I am a one man operation working from a small shop with limited storage and parking. I do more repair and light restoration, stock or mildly modified oriented builds. Fully customized high power builds can require budgets and timelines many times greater, which does not suit my available space, manpower, or resources.

I don't offer tuning or EMS installs. I dont build or sell custom single turbo kits, front mount or v mount intercooler setups, high flow fuel system parts, or other aftermarket performance or fabricated parts. I will not offer radical porting such as semi- or full peripheral port or even full bridgeports for street cars. IF these are the specs you are looking for then I am likely not the builder you should be considering for your job.

In honestly the past decade-plus has seen my business shift to focus primarily on the rx8 models, as most of the rx7 owners stopped bringing consistent work for a while. While I will still work on many rx7 builds, I am beginning to be more specific in my evaluation on a car-by-car basis and will take the jobs that are best suited to my service offerings.

I normally do stock and mildly modified street car repair and restoration...leaving the more modified high power builds to other shops that specialize in them. I'm not saying I won't do it but I am saying the support I can offer for such builds will be limited and I am less interested in taking on such a build vs the ones I normally do (primarily rx8s that are more standardized/less customized) due to all the extra time and talking required for what you are asking for. I stay very busy doing just what I normally want to do so there's little reason for me to deal with more complex builds....I know I'm going to be asked what I recommend for every single detail of the build. Bear in mind the more you change, the more you have to change. I always try to get owners to be conservative in their approach so the build can be done in a reasonable time period, so the cost is kept reasonable, and because a slower car that runs and drives is much more fun than a fast car sitting in the shop or on jackstands in the garage waiting for parts or services needed to support a "big build".

I am a one man operation working from a small shop with limited storage and parking. I do more repair and light restoration, stock or mildly modified oriented builds. Sometimes cars that have been neglected and let to sit need one of every part on the car to be roadworthy again, and can require budgets and timelines many times greater, which does not suit my available space, manpower, or resources.

The first big concern with a car that has sat many years is whether the fuel system is wrecked. The tank can contain rust and varnish. The pump, hanger bracket, and sending unit can be bad. The lines may need blown out or replaced. The fuel injectors may be stuck and need cleaned or replaced (if they cant be saved).

Another concern can be the brake system, especially the rear calipers that stick and drag because the car was left with the emergency brake on. Rear calipers that arent seized are becoming hard to find and new/remans are often not available.

The cooling system can deteriorate and you can need many hoses and belts replaced, sometimes even the radiator and other cooling system parts.

Often tire, suspension, exhaust, and electrical problems also pop up after letting a car sit.

These are parts I probably dont have on hand and can take weeks or months to locate in some cases, which doesn't align with need to keep my business efficient.

So for these reasons, while I will still work on many rx7 builds, I am beginning to be more specific in my evaluation on a car-by-car basis and will take the jobs that are best suited to my service offerings. I might not always be able to offer a full restoration like the car needs and may limit my offering to engine mechanical and surrounding parts only.