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-   -   20b In Fc (https://www.nopistons.com/engine-swaps-35/20b-fc-25998/)

Rob x-7 10-03-2003 06:47 PM


Originally Posted by loudazzrx7' date='Oct 3 2003, 07:13 PM
I have been reading this post and seeing that i have seen alot of swaps at eld performance --the main thing here i see is about money.Do you honestly have any idea what its going to run you to do the swap?--first off to get 350hp out of the 302 is going to be costly.The one thing to think about here is what will take the punishment the most and what will be more drivable--the 7 with the 302 of course,350 horses out of a 302 will be easy to achieve without worrying about major breakage like you will with the 13b.I dont care what the hell anyone says about why are you ruining the car.Your not ruining anything.People have been doing motor swaps for years.And also this crap about center of gravity--lol

how much do you thing the 302 block weights with a carb compared to a 13b and all the crap on it.theres not much difference.I have seen 3 motor swaps at eld.1 to a 302,1 to a 350 chevy,and the other a buick grand national motor--if i was going to do a swap the grand national motor was the ****,that car was a beast!

getting 350hp from a 302 is not costly and it will be very reliable.



the engine itself would be cheaper then getting 350hp from a rotory.

Saying that you needed a engine either way that is.



the swap and cost invoved would probably be about equal to

the time and cost involved in getting 350hp from a rotory, by the

time you buy a turbo kit, intercooler, address the fuel delivery,

get a standalone, and then of course the ever so important step

that will require someone who knows what they are doing

and not a downloaded map - TUNNING. You would probably spend

less overall on a 302 swap, and it would run for 100,000 miles at least.

Mr. Ashe 10-03-2003 06:54 PM

then I could always add two T3/T4's out of SVO/TurboCoupes..



heh.

'79rx7 10-03-2003 08:24 PM


Originally Posted by Mr. Ashe' date='Oct 3 2003, 09:33 AM
that 13B is going to require a lot of work, seeing as I know nothing about them, I don't really want to try doing that at this point. Later, of course, the engine pulled out will be a plaything for awhile as I learn the anatomy of the engine.

^ See tear apart ^



Like everyone else said I wouldn't rule the rotary out so quick 350 hp, isn't an easy task even with a 302. I'm my eyes with what i know 300hp out of the rotary with the way the powerband is and the power to weight ratio will be faster than any 350hp 302 in the rx-7 chassis.



300hp out of a n/a is quite possible I could do it for around $2500 easy. My next N/A that I build will push at least 250-275hp for around $1800 but it's all in who you know.



Keep in mind your N/A tranny will not with stand that amount of torque. With a 302 it will take a custom engine mount, tranny, driveshaft, complete rewire. It's a lot of trouble.



With the rotary and a bit of knowledge you could get it to be even faster then the 302 (keep in mind the reason your apprehensive of the rotary is because you know nothing about it) All it would take would be just the engine being built, nice exhaust, intake, and a few other mods. Nothing major; the n/a tranny would even take the hp, because you wouldn't be making excessive amounts of torque.



Or just stick with your original idea of the 20b it wouldn't be that expensive not much more than the 302 conversion and then atleast you would have something special instead of just a car with a v8 in it.

Mr. Ashe 10-03-2003 08:59 PM

Alright man, let me brake it down for you.



302 350 horsepower.



Explorer 5.0 intake

351W heads (ported, of course)

headers (shorties in this case)

full exaust, H pipe

B303 cam (prefrence, most go with E303)

fatter valves



300-325whp from ghetto bolt ons. I could get a hair up my ass and pop some GT-40 heads on it, or trick flows, balance the son of a bitch and put a lumpy cam in it.



Now 350 would just require a couple more bolt ons. but those are for when I finish, if I don't decide to bolt two turbos on it, the stock ecu can handle it I dunno about the rear end on the FC though..



Or I could just spray it, and make 350 on a stock block. It's not that hard man. They don't call the 5.0 the mechanics best friend for nothing.



I know enough about the 13b to know a very fast one is going to be very uncomfortable to drive. Whereas the comfort levels in 302s start to fall in the 500hp range...rather than the 300s. this will be a cruising car.

KheNeTicZ 10-03-2003 10:34 PM

I can see your point on the comfort levels but what you're gettin in return is nada. look at it putting a 302 in a rotary it defeats the purpose, all you're getting is another car with a v8. just some typical done over so many times in the pointless existance of going straight for giggles its redundant. atleast do something thats original to some extent. then again the commonality of something popular in rural area lore might be inticing in the over all out come of boredom. Its easy to just learn what it takes and hook up the rotary versus the v8 what you named off up there is prolly more work than swapping in a t2 engine or just going the porting route with the 13b or even a 20b swap.

Mr. Ashe 10-03-2003 10:46 PM


Originally Posted by KheNeTicZ' date='Oct 3 2003, 07:34 PM
I can see your point on the comfort levels but what you're gettin in return is nada. look at it putting a 302 in a rotary it defeats the purpose, all you're getting is another car with a v8. just some typical done over so many times in the pointless existance of going straight for giggles its redundant. atleast do something thats original to some extent. then again the commonality of something popular in rural area lore might be inticing in the over all out come of boredom. Its easy to just learn what it takes and hook up the rotary versus the v8 what you named off up there is prolly more work than swapping in a t2 engine or just going the porting route with the 13b or even a 20b swap.

Can I please get some educated opinions? This whole "center of gravity, you're aiming for ET's" garbage is so lame.



A.)SBFs weigh a fraction more than a 13B. GASP! A HUGE V8!! IT HAS TO BE HEAVY..no..it isnt. It's a 302..that's a damn small V8 now, a 454 or a 500..Now that's a big engine.



B.)Cruiser car. Not based on straight line performance. It might get ran down bradenton speedway to shut people up.



C.)Go out and drive a V8 RX-7, take some turns, come back to me. Thanks.



D.)Individuality is what ricers scream, but look how much of a cookie cutter industry that has become. I could care less how much I stick out. Or how much I fit in, people have used 20bs, people have swaped "JDM" 13B turbos. People have done everything. As I said, I rather be common, and fast. Than slow and proud.

Rob x-7 10-04-2003 04:22 PM

im unlocking this topic and moving it, whoever the mod is who locked

it- sorry, but I see no reason for it to have been locked in the first place.


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