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Thread: if i do a 13B turbo engine swap can i keep my auto?

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  1. #1
    Senior Member | IA Veteran  OneSlow5pt0's Avatar
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    yea,iv been looking at 20Bs with auto trann..and they are bout $2K-3K JDM,and my uncle has his own Rotary shop,so,i could save alot of $$$$

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    UANEKNO Bridged's Avatar
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    You will not find a good 20B for less than 4k-6k, that's not even with the transmission. 99.9% Jspec import place have no warrenty of rotaries what so ever. A 20B swap in the car and cranks runs about... 20k, that's without installing fees. Also if you have been researching this swap you also know you will have to run a single turbo setup and get rid of the twin turbo, seeing that the twin turbo setup doesn't fit in the engine bay, that's about 2k. Plus you will need a standalone like Haltech because the 20b or the n/a will run the fully custom engine setup you will need to make the car run, another 1-2k. Then there's the fuel, have to custom make your own Engine mounts and custom cooling lines, upgraded radiator, ignition, etc. I could go into the whole detail of how to do this seeing me and a friend done 2 of these swaps, but i'm too lazy. Here is an idea though....

    20B engine $4,000
    Engine mounts $500
    Custom Turbo exhaust manifold $700, seeing that the win wont work
    Turbo T72 $1,500, whats the point of doing this swap and then downgrading it with a crappy 500 buck turbo.
    Oil/water lines (for turbo) $200
    Intake pipe (for turbo) $100
    Custom Downpipe $100
    Exhaust system $800} This might be optional. If you already have a (larger) aftermarket exhaust system, this might not be necessary. $500 average for a good "cat back" exhaust, and $300 added for a pre-silencer section to be made.
    Front-mount intercooler $1,200 3rotors puts out a heatload of heat under boost.
    Oil cooler lines $200
    Upgrade radiator $500
    Custom radiator hoses to fit the 20B inlet/outlets $50-100
    Cosmo water pump + housing $300
    MSD coils $200
    MSD DIS-4 $700
    Bosch upgrade fuel pump $200
    SS fuel lines and fittings $500
    SX FPR $200 Required to control fuel rail pressure
    Fuel filters $100 You'd be crazy to not run fuel filters.
    Haltech E11 $2,000
    Front anti-sway bar $500 Needed the handle the extra weight on an N/A car.
    you can see that's way over 10k right there without transmission pricing.

    But you said you can do a 20b for around 2-3k seeing that your family can help you out. So when you get it in, post some pics. I would love to see a 20B swap that runs with less than 7k spent.

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    Senior Member | IA Veteran  OneSlow5pt0's Avatar
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    Quote Originally Posted by Bridged
    You will not find a good 20B for less than 4k-6k, that's not even with the transmission. 99.9% Jspec import place have no warrenty of rotaries what so ever. A 20B swap in the car and cranks runs about... 20k, that's without installing fees. Also if you have been researching this swap you also know you will have to run a single turbo setup and get rid of the twin turbo, seeing that the twin turbo setup doesn't fit in the engine bay, that's about 2k. Plus you will need a standalone like Haltech because the 20b or the n/a will run the fully custom engine setup you will need to make the car run, another 1-2k. Then there's the fuel, have to custom make your own Engine mounts and custom cooling lines, upgraded radiator, ignition, etc. I could go into the whole detail of how to do this seeing me and a friend done 2 of these swaps, but i'm too lazy. Here is an idea though....

    20B engine $4,000
    Engine mounts $500
    Custom Turbo exhaust manifold $700, seeing that the win wont work
    Turbo T72 $1,500, whats the point of doing this swap and then downgrading it with a crappy 500 buck turbo.
    Oil/water lines (for turbo) $200
    Intake pipe (for turbo) $100
    Custom Downpipe $100
    Exhaust system $800} This might be optional. If you already have a (larger) aftermarket exhaust system, this might not be necessary. $500 average for a good "cat back" exhaust, and $300 added for a pre-silencer section to be made.
    Front-mount intercooler $1,200 3rotors puts out a heatload of heat under boost.
    Oil cooler lines $200
    Upgrade radiator $500
    Custom radiator hoses to fit the 20B inlet/outlets $50-100
    Cosmo water pump + housing $300
    MSD coils $200
    MSD DIS-4 $700
    Bosch upgrade fuel pump $200
    SS fuel lines and fittings $500
    SX FPR $200 Required to control fuel rail pressure
    Fuel filters $100 You'd be crazy to not run fuel filters.
    Haltech E11 $2,000
    Front anti-sway bar $500 Needed the handle the extra weight on an N/A car.
    you can see that's way over 10k right there without transmission pricing.

    But you said you can do a 20b for around 2-3k seeing that your family can help you out. So when you get it in, post some pics. I would love to see a 20B swap that runs with less than 7k spent.
    thanks for all help though,u really help me,by laying out the stuff

  4. #4
    I'm not OK. Doppelgänger's Avatar
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    Quote Originally Posted by Bridged
    You will not find a good 20B for less than 4k-6k, that's not even with the transmission. 99.9% Jspec import place have no warrenty of rotaries what so ever. A 20B swap in the car and cranks runs about... 20k, that's without installing fees. Also if you have been researching this swap you also know you will have to run a single turbo setup and get rid of the twin turbo, seeing that the twin turbo setup doesn't fit in the engine bay, that's about 2k. Plus you will need a standalone like Haltech because the 20b or the n/a will run the fully custom engine setup you will need to make the car run, another 1-2k. Then there's the fuel, have to custom make your own Engine mounts and custom cooling lines, upgraded radiator, ignition, etc. I could go into the whole detail of how to do this seeing me and a friend done 2 of these swaps, but i'm too lazy. Here is an idea though....

    20B engine $4,000
    Engine mounts $500
    Custom Turbo exhaust manifold $700, seeing that the win wont work
    Turbo T72 $1,500, whats the point of doing this swap and then downgrading it with a crappy 500 buck turbo.
    Oil/water lines (for turbo) $200
    Intake pipe (for turbo) $100
    Custom Downpipe $100
    Exhaust system $800} This might be optional. If you already have a (larger) aftermarket exhaust system, this might not be necessary. $500 average for a good "cat back" exhaust, and $300 added for a pre-silencer section to be made.
    [bold]Front-mount intercooler $1,200[/bold] 3rotors puts out a heatload of heat under boost.
    Oil cooler lines $200
    Upgrade radiator $500
    Custom radiator hoses to fit the 20B inlet/outlets $50-100
    Cosmo water pump + housing $300
    MSD coils $200
    MSD DIS-4 $700
    Bosch upgrade fuel pump $200
    SS fuel lines and fittings $500
    SX FPR $200 Required to control fuel rail pressure
    Fuel filters $100 You'd be crazy to not run fuel filters.
    Haltech E11 $2,000
    Front anti-sway bar $500 Needed the handle the extra weight on an N/A car.
    you can see that's way over 10k right there without transmission pricing.

    But you said you can do a 20b for around 2-3k seeing that your family can help you out. So when you get it in, post some pics. I would love to see a 20B swap that runs with less than 7k spent.
    Fuck it... a well tuned n/a 20B will still make more power the nmost street 13bt's Throw a mild port on the now n/a 20B and you're looking at 300+rwhp.

    I know Downing took a 20b and made a custom intake manifold and exhaust and tuned it and made something like 320-330hp...without porting.
    Still dont get why a low demand motor is priced so high. I know a guy up in Sugar Hill who has many 20B's just sitting around still in the wrap they came in from shipping... and he wont sell them.
    02' Miata




  5. #5
    UANEKNO Bridged's Avatar
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    Quote Originally Posted by DropTopDrifter
    Fuck it... a well tuned n/a 20B will still make more power the nmost street 13bt's Throw a mild port on the now n/a 20B and you're looking at 300+rwhp.

    I know Downing took a 20b and made a custom intake manifold and exhaust and tuned it and made something like 320-330hp...without porting.
    Still dont get why a low demand motor is priced so high. I know a guy up in Sugar Hill who has many 20B's just sitting around still in the wrap they came in from shipping... and he wont sell them.
    I bet my cars title a stock FC with just the minium for a 20B swap with an n/a setup with a mild port would not go over 250whp. A 26A is a differnet story.

    When people come up to me and ask for a Mild port I laugh and tell them it's not even worth my time opening up the engine to do it. You get MAYBE 5 to 10% gain, and that's with tuning and proper setup.

    PS: I want a picture of this man you speak of with all the 20b's in his yard, I would like to have it as a wallpaper for my PC, cause that's crazy!

    Now what you could do is 20B and N/A it and use Renesis Rotors, Ceramic Seals, and Extended port. Would put you around the 300hp range.
    Last edited by Bridged; 01-18-2007 at 04:47 PM. Reason: More info

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    I'm not OK. Doppelgänger's Avatar
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    Quote Originally Posted by Bridged

    PS: I want a picture of this man you speak of with all the 20b's in his yard, I would like to have it as a wallpaper for my PC, cause that's crazy!
    A man by the name of Dennis Spensor owns the shop. I worked there in the composites side of the bldg. and saw them over there. They were running a 20br in a ALMS LMP. He bought the motos thinking he could use them as interchange parts with his race car....but it turns out the Cosmo 20b's and the mazdacomp 20b's he had were different. Not the Cosmo 20b's just collect dust. If you really want to try, a company by the name of Composite Technologies, call them and get the other shops number (same bulding). Place is in Buford Ga.

    Sorry, no pics... worked there a few years ago and last i heard the engines were still there.
    02' Miata




  7. #7
    Slowest Car on IA David88vert's Avatar
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    Quote Originally Posted by DropTopDrifter
    A man by the name of Dennis Spensor owns the shop. I worked there in the composites side of the bldg. and saw them over there. They were running a 20br in a ALMS LMP. He bought the motos thinking he could use them as interchange parts with his race car....but it turns out the Cosmo 20b's and the mazdacomp 20b's he had were different. Not the Cosmo 20b's just collect dust. If you really want to try, a company by the name of Composite Technologies, call them and get the other shops number (same bulding). Place is in Buford Ga.

    Sorry, no pics... worked there a few years ago and last i heard the engines were still there.
    You're talking about Team Spencer. Very good shop. HITman used to do some of their tunning for the race cars. They spend big money to do it right.
    http://www.teamspencer.com/

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