Ok I have decided that I will not go with the rebuild on my s4 turbo 2. This is because it will cost me just about $2500 So because I have to shell out money I was thinking a different engine either 20B or a LS1 I figure I will end up puting in alot of money into the car which would you guys suggest I go with I would like reliability with the car so I am leaning towards the LS1 but I love the rotary. If I get the 20b first thing I do is get it rebuilt so it is a fresh motor. For the most part each engine will end up puting a nice amount of power but which would be I guess the easier of the 2? Any insite would be greatly appreciated

TIA
Tony

 

Both of those will far exceed $2500...

 

i would highly suggest you stay with the 13b. just get the engine cryotreated and you will be fine. cause if you go with an ls1 or a 20b swap your looking at a minum of 10k but it will most likely run you about 20k. and notonly that, you can make a 13b just as fast as an ls1 swap for the same price or alittle less

 

No **** in the exceeding part.

Plan on spending about 10 grand if you go with a 20b.

The engine itself is the cheap part.

 

i know rastarajah did his for under 10k, but he did the work himself and thats including the cost of his car. i doing mine for around 12k and thats not including the cost of my car. but i am also looking at getting a roll cage, supercharger, and a dyno tune for that price. so its doable, it just depends on your budget.

 

2500 can get you a pretty good rebuild. If you are comfortable with doing the work yourself 2500 could get you new rotor housings ceramic apex seals and new stock seals everywhere else. Or for allot less you could use RA or Atkins apex seals.

But if reliable power is what you want an LS1 can't be beat.

 

oh i know if i decide to go with either swap it will be close to 10k but thats not a problem, my friends dad is a machinist, and he can weld up parts tig,mig. I have a 2 door garage with just about any tool you can think of to work with, and a friend works at a shop that can dyno, I will be doing most if not all the work on the car. I just want to know which one would be the best bang for the buck? and as far as rebuilding my own turbo 2 i rather leave that one to someone who knows what there doing because i m used to working on civics, 240, and gti but a rotary is new to me and the fact that they react to thing worse than piston engines i leave it to a pro.

 

This question is really a matter of personal opinion. Ask 10 guys thier opinion and your likely to get several different answers. The 20b is a sweet engine but the part I dont like is parts availability. Just getting a gasket can require special ordering it. For that reason alone I personally would go with something more common. You need to decide whats right for you...Im not getting into the rotary vs piston discussion.

 

You can do a swap pretty cheap if you can fab. You'll need a welder, metal cutting band saw, grinder, floor jack, hoist, and a few hundred hours.

 

which gasket on the 20b isnt an exact match to a 13b part? only ones i can think of are the intake and exhaust gaskets, both of which mazdatrix carries.