Other Engine Conversions - non V-8 Discussion of non-rotary engines, exc V-8's, in a car originally powered by a Rotary Engine.

WTF? FC with SR?

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Old 06-21-03, 12:37 AM
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WTF? FC with SR?

http://www.importfanatix.com/html/ma...pics_1_10.html

I actually asked the person who did this why? he said that he went thru 6 13bt engines. He also tol me that he lapped the rotors/housings. I think that has something to do with it since he also said a used jspec engine lasted longer than any of the engines with the lapped rotors/housings. or maybe he's just a dumass. eh i dunno.
Old 06-21-03, 12:49 AM
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what a waste of an engine bay.. he probably wasn't smart enough to maintain his 13BT properly

i'm guessing he lapped the side housings since i'd fins it odd lapping the rotor housings.. that being said lappy side housings off of i think it's 84's up but i know it's all 2nd gens is pretty bad since they're treaded with a substance to make them wear alot less and cause less friction.. i read after they're lapped the treatment is gone and they wouldn't last more then 40K miles on a stock engine b4 needing a rebuild

-Frank
Old 06-21-03, 01:00 AM
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****.. who cares, that cars probably nicer and faster than anything id ever be able to afford. He's obviously got some money and brains or he wouldnt be able to do the swap. I personally have gone through more 13B engines than ive heard of any one go through piston engines. Hell.. if given the choice, id probably rather have an SR motor in my car over a 13BT.
Old 06-21-03, 01:09 AM
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that guys on the forum. he is (I think) initialdFC, or something like that.

putting a 4 cylinder in an FC would totally screw everything up. the eight distribuition not only would move farther forward, but the center of gravity would be higher up as well. you can see how high that engine sits in the bay. he had to cut out part of the underside of the hood. in a different picture, you can see the red top of the SR right behind teh hood scoop.

this car may be fast, but it would be faster with a 13BT. at least handleing wise, anyway.

IMHO, if you don't want a rotary engine, then why buy a car with one in it?
Old 06-21-03, 01:25 AM
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UR right on RXciting. I remember reading somewhere that the housings have some type of protective coating on them. but neway I'd take a 13b with low compression over a SR20det with a t88 anyday.
Old 06-21-03, 07:29 AM
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I saw that car at the D1 Driver Search thing over in Irwindale 2 weekends ago. The thing is fast, no doubt about it, but what a waste...what a waste.

The SR sits so mich higher than the 13BT - so high that it won't clear an N/A hood. If you peek through the scoop you can actually see the red top sticking up.

Now I am no physicist or anything, but with the engine now so much higher on the car I am sure the centre of gravity is definitely worse off than with a 13 BT. Why anyone would do this is beyond me.

Rotary engines, if taken care of properly (NOT babying), can outlast piston engines easily. One famous example for this is the 787b R26B that won the Le Mans back in 1991. When they tore down the winning car's engine Mazda found that it could've ran for at least another 24 hours under Le Mans load before it might need a rebuild. Most piston engines are lucky if they last 24 hours in that race.

From what I know most rotary engine failures are not due to some sort of inherent weakness of the engine itself, but more about the cooling system that supports it. A piston engine will fail just as often as a rotary if its cooling system is not up to the task.

Last edited by Rotary Dawg; 06-21-03 at 07:45 AM.
Old 06-21-03, 12:56 PM
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Who cares what engine he put in his car. He wasn't happy with his rotaries performance, so he swapped an SR20DET into it. It's his car, and he's the one that has to drive it. If he's happy with the way it performs, he'll keep the engine. If not he'll try something different. Don't knock it unless you've tried it. I congratulate him on having the skills to put it all together.
Old 06-21-03, 01:14 PM
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I think its a sweet conversion, and props to the guy that did it. SR20DET's are amazing engines, built like a brick, and will take any punishment you throw at them. I don't like the body style of 88-93 240's, but i love FC's. So that car has my favourite engine in my favourite shell. My second favourite engine is of course 13BT, but alas, not as bulletproof, and slightly finnicky!

PROPS TO THE GUY THAT DID THE CONVERSION. That takes ALOT of know-how.
Old 06-21-03, 01:14 PM
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why didnt he just buy an s13 and swap a SR20 into it? same weight distrobution, same size car...easier fitment..
Old 06-21-03, 01:19 PM
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Thats a pretty pointless swap if you ask me. An FC and a 240SX are pretty much on the same platform as far as the body goes, so why would you put an SR20DET in an FC, when it bolts up to a 240SX? I dont get it.
Old 06-21-03, 03:13 PM
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I'd still take it, and for those who don't like it, can't appreciate the work that went into it, think it's a "waste", or any other crap... you're probably not car people.... or a n00b
Old 06-21-03, 03:42 PM
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my fc broke

 
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isnt that guy on the forum. his name is initiald fc.

Last edited by 1SxyRXy; 06-21-03 at 03:44 PM.
Old 06-21-03, 03:56 PM
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Originally posted by BDoty311
why would you put an SR20DET in an FC, when it bolts up to a 240SX? I dont get it.

jeeez...welcome to last month guys

IntialdFC is a good guy and has been on the forum for many years. I'm sure many of you guys have pics of his car from back in the day and don't even know it, lol.
Old 06-21-03, 04:00 PM
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my fc broke

 
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when did he switch to SR could of swore he had a 13B in it last i checked
Old 06-21-03, 06:05 PM
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Maybe he just wants to be unique by putting a SR20det in there. ppl put v8's into RX-7's, how is this much different than that?
Old 06-21-03, 06:44 PM
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off to other engines
Old 06-21-03, 07:01 PM
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Usually swaps are the outcome of a need to either make the car more powerful, or more reliable, or both. Money comes into play when dealing with this as well. Rotary engines making high HP levels usually arent very reliable, and are definately very expensive to maintain and modify, as opposed to other types of powerplants. Melt a piston on an SR, replace the piston. Crush an apex seal, replace the whole motor, you dont get too many chances on a rotary at these power levels. Reliability is difficult to come by when making good HP, but the rotary is much less forgiving. I think you guys should put a 13b in a nissan for good times.
Old 06-21-03, 07:56 PM
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the SR is a rock solid motor if tuned properly. We are making 397@wheels at 22psi and 93octane. Car ran 11.24@127mph. As far as weight distribution, the SR(engine/trans) is quite a bit lighter so a rear bias would occur. The car as it sits w/out driver and 5gal of gas was 2635lbs. It is not to say the 13b is not good, but to each their own. I am sure you saw the post below but here is a link.
http://www.eng.fsu.edu/~jthagard/upgrade/
Old 06-21-03, 08:16 PM
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SR20 my nuts..a guyi know put in a Sr20det engine his 240sx, intake, downpipe, exhaust. ran a 14.9 best. that's a rx-7 stock!. but it's not bad, i'm not against it, like i'm not against v8s in rx-7s, more engines for me!
Old 06-21-03, 08:37 PM
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Yeah, props to the guy who did the conversion, but IMHO I just think it's wrong to put a piston engine into a rotary car. My comment earlier was not meant to be an attack on the guy - as I've said, there's just something wrong about a piston engine in a rotary car...
Old 06-21-03, 11:19 PM
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Originally posted by 600HP CLUB
SR20 my nuts..a guyi know put in a Sr20det engine his 240sx, intake, downpipe, exhaust. ran a 14.9 best. that's a rx-7 stock!. but it's not bad, i'm not against it, like i'm not against v8s in rx-7s, more engines for me!
Well, when the longblock(block/heads/headgasket) were stock the car went 11.16@126mph with 22psi and a 50shot. The motor has since seen forged rods/pistons, headgasket and HKS cams. The car will eventually be dialed in with 25psi and 100shot and should see some 135-138mph traps. 14.9 is not that great, but it is all how hard you push it and do you know what you are doing!
Old 06-22-03, 12:26 AM
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the owner of that car is initialdfc, he is on this forum. I agree that it would have been easier to swap it into a 240, but maybe he liked the body of the fc, and he believed the sr was more durable. his opinion, his car gotta respect him for pulling it off
Old 07-02-03, 06:47 PM
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God damn lotta love and hate in here....

few things...
i have run like 12 different setups on my 13bs, im not new to the rotary thing... t04's, t72, t76, t66, semi pp rew motor...

another... the car isnt built for speed or max hp or anything anymore, i always here alot of, 13bs can make more power, or they are lighter or whatever, i weighed my car in at 2600lbs 2 weeks ago with a 150lb cage in it, (dont have a tig welder for chromoly)

i didnt buy a s13 and swap it in, because they drift 100 times easier than fc's, anyone and their mom can hop in a 240 and chill at full lock. rx7s have much more snap and grip for higher speed slides which i like.

i mounted the motor far back enough where i ditched my heater and it is less than 1/4" to the firewall, about 6-8" farther back than in 240s.

and ohh yeah... if i was building this car for you guys and not me... than maybe i would not have put pistons in it... but it drifts about 40x better than before, more engine braking, more low end response, and the wicked gas mileage is nice too.

basically i took a under-rated drift chassis, and made it better.

Last edited by InitialD FC; 07-02-03 at 06:50 PM.
Old 07-09-03, 03:41 AM
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earning these was better

 
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It drizifts better guys shut up about the pistons.

Seriously, why swap one small turbo engine for another? I would put a V8 in an RX-7 before swapping anything else in their.
Old 07-09-03, 09:27 AM
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i say what i want

 
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i got to see it in person this past sunday at hyperfest. i have to say it was a badass car, and you could tell it was built for purpose. the front end was all f'ed up from hitting ****. he was one of the better drifters out there. seeing it coming around the corner sideways, and when he passed i couuld see the red top peeking through the t2 hood scoop. it was badass.


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