View Poll Results: Engine Build up or swap for my 2nd gen Race car
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Build up or swap?
#1
I'm Just That Good
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Build up or swap?
I'm sure it has been asked before, and don't worry I did a search on it and gather some information first. Alright I have right now a Turbo II with a shot rotor that needs to be replaced, probally more as well, it has 106,000 miles on it. On friday I intend to ear the engine out and find out what exactly is wrong and needs to be replaced. Here is the question I have set aside 15,000 to build a race car, after $500 for the car I'm left with $14,500. Now what should I do build up the 13b turbo that is in there, drop in a whole new 13b turbo, or do a 20b engine swap for it. Which is most likely going to give me the most gain, if I spend the 14,500 on the 13b will I get as much as if I spent around 10 on the 20b swap and then 5 on that engine? So here is a link to a site that discusses a 20b swap on a 2nd gen RX-7 http://fc3spro.com/TECH/SWAP/COSMO/20b.html check it out and you guys tell me what you think I should do?
#3
Rotary Freak
if you are good with cars and you want a race car i'd say go with the 20b swap but you wont have any money left afterwards but why not a 13b re swap you can swap in that motor and have enough money left over to get performance parts for atleast 450rwhp
#6
omae mo na!
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once again, even with a swap (assuming its not a fresh rebuilt swap) id still reccommend rebuilding whatever you put in the car, just to make sure everything is on the level before you start doing sick mods to it. and i agree with 91mazdarx7, a 20b will hit your cash reserves so hard you might not be able to afford to put gas in it.... the 13bre is a good swap choice..
keep in mind, with a rebuild you have the options of porting while its already open. thats where the power comes from on the rotary, BREATHING MODS. intake / exhaust...
keep in mind, with a rebuild you have the options of porting while its already open. thats where the power comes from on the rotary, BREATHING MODS. intake / exhaust...
#7
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Well what kind of power can I expect from just dropping in a 20b? And what are some recomended mods for the 13b-re to gain some power. I'm really looking for a "10 second car" or better what is the best way to get there, and will both options get me there?
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#10
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Alright here is a new twist to the scenario, I want to be able to race the car in NOPI Race series but due to the rules I can only use a 3 rotor engine in the pro-outlaw RWD class where most cars are running seven second cars, or I can keep it as a 2 rotor engine and run in the Pro street tire class whre they run 9 and 8 sec. cars. Now which one should I do with the resources I have discussed earlier which is more likely to happen a 7 sec. 20b or a 8 sec. 13b?
#11
working towards the goal
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I've already thought this out for my own self. I'm doing a 20b swap with all the works. It's not someting that you should tell everyone that you are doing because some have no clue about that motor and some know that it's a pricey job to do and will assume you're full of ****. All I can say is that you'll love it when it's done. Mine's still got 2 years before fully erected. It'll be a street car.
I don't know how a 20b will do in race only applications. Obviously you'll enjoy the larger displacement and torque. Make sure you get fat, sticky slicks.
I don't know how a 20b will do in race only applications. Obviously you'll enjoy the larger displacement and torque. Make sure you get fat, sticky slicks.
Last edited by Drag'nGT; 12-23-04 at 03:26 PM.
#14
Tear you apart
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Oh also, I did all the pricing (new AND used) for a 13B-RE and all of the little requirements. And it turned out to be between $9,000 and $13,000 thousand. But if you can get things discounted or used itll be cheaper. But overall its pretty costly there still. Just imagine with an added $2,000 to $4,000 for an engine without porting.
#15
Originally Posted by JagerII
Oh also, I did all the pricing (new AND used) for a 13B-RE and all of the little requirements. And it turned out to be between $9,000 and $13,000 thousand. But if you can get things discounted or used itll be cheaper. But overall its pretty costly there still. Just imagine with an added $2,000 to $4,000 for an engine without porting.
#16
Tear you apart
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Everything that was needed,
Upgraded clutch and pp, engine mounts, engine, fmic, turbomanifold, upgraded turbo, piping, exhaust, radiator, bigger injectors, ems, and several other things on the fc3spro list. Pretty much to get everything done without taking shortcuts. Not to mention I factored in engine rebuild and porting (the costs of the rebuild parts) and such.
Upgraded clutch and pp, engine mounts, engine, fmic, turbomanifold, upgraded turbo, piping, exhaust, radiator, bigger injectors, ems, and several other things on the fc3spro list. Pretty much to get everything done without taking shortcuts. Not to mention I factored in engine rebuild and porting (the costs of the rebuild parts) and such.
#20
I break Diff mounts
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An 8 second 13bt will be hard to do.
SoulAssasin had a half bridge with some turbo and I think he did 9's.
Honestly there is a VERY small group of 13b's which are in the 10's and under.
A 20b will net you some immense power without completely sacrificing the engine.
so far I have seen quite a few 400-500hp FC's but nothing over that.
They were running professionally built 13bt's with huge turbos(t77 and custom T04R style).
A local guy is running a cosmo engine and is doing about 370rwhp. Can't remember what turbo he has.
The 13b-re(2 rotor Cosmo) is a good engine because it's cheaper than a FD 13B-REW and basically has the same stuff.
It has the good internals but also has a slightly larger intake port.
The throttle body is also bigger than a FC TB so that will help a bit.
SoulAssasin had a half bridge with some turbo and I think he did 9's.
Honestly there is a VERY small group of 13b's which are in the 10's and under.
A 20b will net you some immense power without completely sacrificing the engine.
so far I have seen quite a few 400-500hp FC's but nothing over that.
They were running professionally built 13bt's with huge turbos(t77 and custom T04R style).
A local guy is running a cosmo engine and is doing about 370rwhp. Can't remember what turbo he has.
The 13b-re(2 rotor Cosmo) is a good engine because it's cheaper than a FD 13B-REW and basically has the same stuff.
It has the good internals but also has a slightly larger intake port.
The throttle body is also bigger than a FC TB so that will help a bit.
#21
Tear you apart
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Originally Posted by Tierce
...right...the jspec 13b from a cosmo right? or am i confuzzled about something.
#23
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Looks like I am going to go with the engine already in there. I have it out now and will be stripping the block tonight and then I will send it off to be streetported. I will put a bigger turbo on it and a bigger BOV a new intake and exhaust and a drag line suspension. What else should I put do to the engine to get some power gains?
#24
Originally Posted by Digi7ech
An 8 second 13bt will be hard to do.
SoulAssasin had a half bridge with some turbo and I think he did 9's.
Honestly there is a VERY small group of 13b's which are in the 10's and under.
A 20b will net you some immense power without completely sacrificing the engine.
so far I have seen quite a few 400-500hp FC's but nothing over that.
They were running professionally built 13bt's with huge turbos(t77 and custom T04R style).
A local guy is running a cosmo engine and is doing about 370rwhp. Can't remember what turbo he has.
The 13b-re(2 rotor Cosmo) is a good engine because it's cheaper than a FD 13B-REW and basically has the same stuff.
It has the good internals but also has a slightly larger intake port.
The throttle body is also bigger than a FC TB so that will help a bit.
SoulAssasin had a half bridge with some turbo and I think he did 9's.
Honestly there is a VERY small group of 13b's which are in the 10's and under.
A 20b will net you some immense power without completely sacrificing the engine.
so far I have seen quite a few 400-500hp FC's but nothing over that.
They were running professionally built 13bt's with huge turbos(t77 and custom T04R style).
A local guy is running a cosmo engine and is doing about 370rwhp. Can't remember what turbo he has.
The 13b-re(2 rotor Cosmo) is a good engine because it's cheaper than a FD 13B-REW and basically has the same stuff.
It has the good internals but also has a slightly larger intake port.
The throttle body is also bigger than a FC TB so that will help a bit.
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