im going to soon be buying another rx7. but there is one problem the motor is bad and it has 210k miles on it. the car is a t2 and it has the stock motor. and i know this becase the guy im buying it from bought it from the factory and he knows my father very well. the motor has no compression and will need rebuilding.

here is my question is this motor worth rebuilding? are the housings and rotors going to be in bad shape? i dont want to have to buy all new housings and rotors. should i try to rebuild this or just buy a jspec from fc3s.org.

 

I would guess some of the parts would be pretty worn.

the best thing to do would be buy a j-spec and rebuild it using the best parts from both.

 

This whole Japspec motor craze is pretty retarded acutally...... the problem is that god knows how long that thing sat in a junkyard until somebody found it and said... "those retards in america will pay me top dollar for this junk"..... the best parts i've sen that really do have some advantages are the intake parts.. no emissions and most flow better, however, you won't pass an emissions inspection with them!!!

 

im in florida and dont have to worry about emissions. but are the jspec motors worth it? because im pretty sure that the 210k motors internals will be junk. i dont wanna spend crazy money rebuilding and buy new housing and rotors.

and thanks scott i think i will do that

 

Rebuild the Jspec

 

i just purchased a j-spec engine from FC3S.org you should go check them out. they just got a new shipment in and they are pretty cheap.

 

Alright, look at this situation. You live in Japan. You know that you're going to have to pull your engine on the order of 30k miles and so why are you not going to mod it if you're into performance? Right off, your chance of buying a highly modded engine go up. Now if I had 27k miles and knew at 30 I was going to pull it, why would I not run an extra few pounds or just push my luck tuning it. Point being they're going to hammer on their engines a lot harder knowing they don't have to worry about them. I completely agree with YearsOfDecay on this one too. How long do they sit there? You have no idea. All of the engines are pulled out and shipped and then they sit again. This is not to say that you're going to get a lemon, but how good could the situation turn out given the circumstance?

 

so what are you saying i do the car im going to get has 210k and there stock internals from the factory. im pretty sure that there going to be toast. the jspec + rebuild it sound like the way to go.

 

Well I guess it would depend. If you are gonna port it put in 3mm apex seals and etc I would rebuild. If you are just gonna go stock go Jspec. I bought one from RotaryWorks. I have had 0 problems with it. Shane at Rotary Works also warrants all Jspecs to have no leak issues. So no need to worry about bad coolant seals and so on. The Jspec I have seen from him saw 20 psi of boost on a regular basis. This engine runs like a top it does not smoke it idles fine no issues. I am sure she will see some more 20 psi runs next summer. The only thing is this summer I will have a bigger fuel pump, injectors, turbo, FMIC and a F-con. Last year I watched my A/F guage drop to the lower end of the stoich reading with that booost level. Where it would normally be at the highest end of stoich to the lowest end of rich. Still the engine runs fine. So do what you think but I have heard horror stories from the rebuild side of the house to. There was sombody on here not to long ago complaining about a pineapple rebuild. So thats scary I would rather risk the $ of Jspec before a bd rebuild. I do however want ported motor with some other internal goodies so I will have to research and talk to the different builders and see who to go with. A complete J-spec for $1,000 or a short block for around $600 with warranty? That seems like a safe bet.

 

I don't think anyone has answered this yet, will his internals be toast just because of the milage? I have a ser5 n/a motor with 190k miles. Why would the internals be toast if the motor was taking care of? I was planning on using mine for a streetport.

 

Not generaly true. In Japan Exporting is a huge business. You get a tax credit if the car is a salvagable car. Now I own a RE importing specility shop and i can tell you there is ALOT of junk over there. If you buy an engine get one from a shop that specilizes in Rotaries, not one that get everthing CE or RE and hopes for the best. We get cores we pay for cores. We get A to B engines and that is what we pay for. I guess the point here is besides us RotaryWorks, FCS3.org seems like the only other place to get a RE. We know our business.

Shane

 

also on the jdm subject, we have some engines comming in 2 weeks.

2 13bts
1 cosmos RE
1 20b complete

Right now we also have 3 core engine waiting to be built and ported if needed. These are 13bts and we can use high or low comp rotors.

Shane

 

 

Get a J-Spec versus a rebuild?...I did both. As I hear quite often that J-Specs make great cores for rebuilds. I was fortunate though. My builder told me that all the seals were In great shape and their was no need to rebuild It. I opted to have It rebuilt, streetported, sandblasted and painted anyway b'c I'm particular that way.

Here Is a course pic . My Engine Bay has come along way since this pic was taken -



My favourite. I love the silverrotor...hehe