20B FD Qs

Started by colin777, July 20, 2009, 01:04:57 PM

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Nik da Greek

I kinda agree with you on one score, Raz, I\'ve never seen the point of taking the RX-7\'s unique feature away and sticking in a V8. After all, if all you want is a pretty car with a V8, well...Corvettes have been around a while, quite a few years with various LS engines in, too :3Confused!

I just can\'t see why these "discussions" always end up so heated, guess if we didn\'t all have competitive spirits we wouldn\'t have ended up in the cars we have :rollinI just love cool cars whether they\'ve got V8s, rotaries, whatever. And I don\'t really care if Craig\'s V8 Rex was the fastest at Elvington because, well, just about everyone\'s is faster than mine :mad: :D

od404

Quote from: Nik da Greek;630496And I don\'t really care if Craig\'s V8 Rex was the fastest at Elvington because, well, just about everyone\'s is faster than mine :mad: :D

Not everyones :Hammer

If you think it\'s bad on here, try being an engine designer and turning up to the office with a rotary.  Seemingly that joke hasn\'t worn out for my colleagues, even after 2yrs...

Kash_

okay guys can we get back to what this post was about........ a 20B !!!!!!!

BlitzBoy

ahhh we all luv a bit of banter life be boring otherwise.

All I know my little 2 rotor is quicker then all the UK Rx7 V8s :rollin
"Piston Killa" 3rd Gen\'94 \'Oldone Racing Full Bridge Ported REW 13b engine with SCR seals\'. HKS T51 KAI turbo BBM mapped Motec ECU

JDS/HKS Street Class Championship Runner up 2011
Rotorstock winner 08,09
http://pistonkilla.blogspot.com/
old spec HB T51 470 @ wheels @ 1.2 BAR, 555 @ fly 10.46 @ 130 @ 1.25 Bar
new spec FB T51 482 @ wheels @ 1.15 BAR, 570 @ fly

New Project
"el fénix" RX2 by Mark & Mark

od404

Banter is good, and as long as these discussions don\'t get into name calling, then it does throw up some opportunities for people to learn something.

Those links Kash put up has some great info in them, granted some bits are a little one-sided but the majority is sound theory.  Good finds there Kash :Thumbs-up

Spartacus

Kash, your cut and paste from Wikipedia whilst it is impressive does not answer my original questions:
 
Where is your evidence of the 20b having less friction than a V8?
Why do you think a 20b FD has less transmission losses than a V8 FD when they both theoretically have 500rwhp?
Why you believe a 500rwhp 20b FD would be faster than a 500rwhp V8 FD.

Re your cut and paste from drivingsports.com
It states that “Volumetrically, however, rotary engines are superstars.” I quite agree but can I remind you that the LSx range of engines start at 5.7 litre and go up! (Probably doesn’t mean much to you eh)  

Re your cut and paste from ezinearticles
I also fully agree with this however you are completely missing the point, in your previous post you have already stated that hypothetically both the 20b and the V8 have the same 500rwhp so therefore the potential extra torque of the V8 would obviously be advantageous.

I find your post stating that “For some reason when you get v8 rx7 owners they think their car is far superior as they have a v8 lump in it (not all but most) and they talk trash about the rotary (again some not all).” Offensive if directed at me and if not, I have not seen any evidence of it on this forum.

If you are refereeing to the post from antnicuk asking if anyone had seen the results from TOTB, he is not a V8 FD owner (yet;)) but does have experience of both V8 FD’s and 20b FD’s and I believe his post was a direct result of Rzla’s earlier post stating that ant “would lose your money” by betting on Tinker being the fastest RX7 at TOTB (which by the way, he was)

Rzla, I’m not manipulating any situation, just asking for facts from a direct comparison between a V8fd and a 20b FD which I still don’t have. And as for trying to “convince rotary owners that a V8 conversion is better”
All I ever do is recount my experiences and try to make sure that facts are brought to the forefront rather than nonfactual spin.

And as for pistons are for……. I assume you meant to put in “people who want pistons?” in there?

Quite simply I asked for reasons for your views which were backed up by facts (I\'m still waiting) as I am interested and would genuinely like to learn. I have never knocked or criticised rotary engines in any way shape of form (unlike some re V8\'s)

I also believe that should I own the car, I am entitled to do what ever I want to it.

If you hold the view that no one should change any aspect of a car and keep it as it came out of the factory I can respect that. But to criticise another persons modifications when I\'m sure they themselves have modified the car in some way other from what Mazda designed and intended I think is a tad hypocritical, don’t you?

Signing off from this thread.

Rzla

Quote from: Spartacus;630540I find your post stating that “For some reason when you get v8 rx7 owners they think their car is far superior as they have a v8 lump in it (not all but most) and they talk trash about the rotary (again some not all).” Offensive if directed at me and if not, I have not seen any evidence of it on this forum.
 
If you are refereeing to the post from antnicuk asking if anyone had seen the results from TOTB, he is not a V8 FD owner (yet;)) but does have experience of both V8 FD’s and 20b FD’s and I believe his post was a direct result of Rzla’s earlier post stating that ant “would lose your money” by betting on Tinker being the fastest RX7 at TOTB (which by the way, he was)
 

Apologies if you think my post with regards to v8 owners was directed at you, or even other v8 owners on here, it certainly was not. I said some on purpose because I know all are not, like yourself.
 
With regards to ants comment anyone with an ounce of common sense would know that the v8 would be quickest... why because he had 550whp while the other 7s on show were noway near that power band.
 
Secondly... read when I said ant would loose his money. Hell I would have bet on the v8 to be fastest, it is not rocket science, he had way more power.
I said if there was a rotary and v8 with the SAME power he would lose his money.
 
Also it has got nothing to do with modifying cars. It is to do with everything the rx7 stands for. I have stated to you that I like v8s, I am a big fan of the corvette, especially the Z06. I have nothing against pistons. They just don\'t belong in the 7, 8 or 9 when it is produced.
The reason is you are taking the soul of out the car, the purpose it was built for.
 
Don\'t sign off it is an interesting discussion, there has been no name calling swearing or threats of violence lol. I have read about the problems you have had and I for one don\'t blame you for giving up. However the more people that get v8 rx7s the bigger the risk of the rotary dying and not progressing here and it is not exactly a big scene in the UK, unlike America, PR or Australia.

antnicuk

Raz,  if you dont pack it in i\'m gonna come round your house one night and stick a rover V8 in your Rex,   now that is sacralidge :)

Sicknotes car was supposed to be 600 bhp acccording to normski when he had it put together by pip. so i spose on paper it should have been a good contender, shame we didnt get to see it run properly.

Blitz,  what do you reckon your car would run at elvindon with the same suspension and tyres tinkers car had,  do reckon it would be quicker?,   what power are you running?

Crain Winstanly had that car before Sicknote and also had a V8 FD which he raced in time attack,  and he chose to sell the 20b not the V8.  It would be interesting to hear his thoughts on the matter.

On a different note  did you notice that some of the quicker cars were all kit cars :)  thats the way forward,  just be prepared to get wet :(  

I was gutted i couldnt make TOTB as my little rotary rocket would have made people look twice.  I have already run 11.7 on road tyres with 70 less hp , less torque and a slippy clutch.  But 70 hp increase in my car is the equivalent of 120 - 130 hp increase in an FD.  The handling circuit would have been pure fun :)  I think i would have lost out on the  top speed due to aero\'s and bits falling off the car but i would have given it ago.  I managed 117 on the 1/4 on the old set up....
400 BHP - 650 KG\'s = 616 BHP Per Ton of Rotary Power

That\'s the way to do it! :Thumbsup!


Rzla

Lol don\'t sell my soul lol.
It is just my opinion.. does not mean it\'s correct or gospel!
It would be good to see your pocket rocket in the flesh ant! Very impressive times!

clive

Arrrrrgggggg, cant believe I\'m going to become part of hijacking this poor guys thread :xconfused


I have heard the Torque vs Horsepower argument nearly all my life but there\'s another as well "there ain\'t no substitute for cubes" !

How about this little consideration,

If your going to put a V8 in an FD its probably going to be a 5000cc or 7000cc and if its a rotary its going to be 1300cc or 1950cc if it\'s a triple and yet all configurations can give the same power  :3gears-lh.

Now using the "there ain\'t no substitute for cubes" argument , imagine if we had a 7000cc Rotary !!!!!!!!!!!!!!!!!! don\'t think there would be much argument then do you :chat

All in all the fact that this argument is even considered with such wildly different cubic capacity\'s shows what a fantastic engine the Rotary is due to the power the little thing can produce :D
All the best Clive

BlitzBoy

Quote from: antnicuk;630635.

Blitz,  what do you reckon your car would run at elvindon with the same suspension and tyres tinkers car had,  do reckon it would be quicker?,   what power are you running?

....

I already know I would be quicker :Hammer

lol :cheers Tony I have already run at Elvington at Totb with my car 2006 with the To4r and street port running WI and 1.3 bar was pushing approx 440rwhp,that was with Tein hard suspension and Falken 452 street tyres
I ran a 11.39 @ 126

Terminal speed does not lie in how much power you are producing regardless how bad the launch is or grip this is a true Fact. I would have expected Craigs terminals to be in the 130s if he is producing a true 550rwhp
"Piston Killa" 3rd Gen\'94 \'Oldone Racing Full Bridge Ported REW 13b engine with SCR seals\'. HKS T51 KAI turbo BBM mapped Motec ECU

JDS/HKS Street Class Championship Runner up 2011
Rotorstock winner 08,09
http://pistonkilla.blogspot.com/
old spec HB T51 470 @ wheels @ 1.2 BAR, 555 @ fly 10.46 @ 130 @ 1.25 Bar
new spec FB T51 482 @ wheels @ 1.15 BAR, 570 @ fly

New Project
"el fénix" RX2 by Mark & Mark

mattfduk

Quote from: antnicuk;630635Crain Winstanly had that car before Sicknote and also had a V8 FD which he raced in time attack, and he chose to sell the 20b not the V8. It would be interesting to hear his thoughts on the matter.

If you look on Piston Heads he is selling the V8 too

Mims

Quote from: mattfduk;631029If you look on Piston Heads he is selling the V8 too

Can\'t see it? Link?


Rzla

Quote from: Mims;631119Can\'t see it? Link?

You should buy it...