pros and cons for 20b or v8

Started by turbo boy, November 22, 2011, 08:40:33 PM

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tinker-27

What is the weight bias of a 20b ? Without cutting the bulkhead ? The v8 is within 1% front to rear ( could be closer if anyone really thought it made that much difference )

Mir

Quote from: Mir;799960Grant I am sure you saw the Dyno Sheet of my FD. I made 520FWHp on a Street Ported Engine. So, with a bridge port and GT42 OR 45 Turbo you are looking 750FWHP at only about 10 Bar a Boost!! "Roughly"
 
Mir

10 bar :Hammer:Hammer:Hammer:Hammer:Hammer:Hammer:Hammer:Hammer offcourse, I meant less than a Bar, I think I was drunk, when I wrote this :Giggle:Giggle:Giggle:Giggle:Giggle:Giggle
 
Sorry!!
Mir
I am building a Genuine Fastest Street Rotary!
No Cutting and No Removals
Love FDs. Currently own:
20b-Triple Rotor,Single turbo FD
13B- Two Rotor, 2000spec on Stock Twins-FD
13B- Two Rotor, Single Turbo FD
Quote:
Originally Posted by youngone 
It takes some money for engineering a proper 20b

My C

Mir

Quote from: Grant Monkhouse;799975A 20b turbo will probably be heavier then a v8 me thinks?
 
Weight distribution can be made better by some firewall chopping.

Bang on :Ladys-man
 
This is exactly what I did. My car handles better than a 13b FD. Actually, I must admit that after installing a Re Bridge Bar, my car even handles better
 
Mir
I am building a Genuine Fastest Street Rotary!
No Cutting and No Removals
Love FDs. Currently own:
20b-Triple Rotor,Single turbo FD
13B- Two Rotor, 2000spec on Stock Twins-FD
13B- Two Rotor, Single Turbo FD
Quote:
Originally Posted by youngone 
It takes some money for engineering a proper 20b

My C

Grant Monkhouse

I think either engines would be great.

If you are concerned which will give you the most miles per tank of fuel then the v8 is probably the best option. Unless you do what tinker has done and stick 2 turbos on your v8 then fuel consumption will be terrible. Lmao. Will go like stink though!!

turbo boy

Guys im not gonna lie to you, i would KILL for 20b but ive gotta listen to my head and not my heart, after all ive got a new job not won the lottery!
 
Its like Craig said iam after a standard new motor with new diff, gearbox etc not another highly tuned engine. £20k for just the engine is just silly and you cant blame people for swaying towards the v8. Parts are cheap, fuel consumption isnt that bad and lets be honest im gonna spend less money/time under the bonnet.

Bobbit

I\'d love a V8 converted FD. After being taken for a spin in one I was amazing at how quick it was and it was under 400BHP. Having lived with a rotary as my only car for a number of years I never lost the "whats gonna happen when I turn the key today" mentality that my FD gave me, despite nothing major going wrong, there was always some little niggle that lay in the back of my mind. Going V8 would, IMHO, remove those doubts and allow me to enjoy a car in the way I want to (driving nice and sensibly with the ocassional hoon about) and return a reasonably MPG (although good MPG and sports cars are not really compatable)
For me the sound of the V8 and the brutal acceleration left a massive impression on me and I\'ve yet to have a similar experience in a rotary.
Now dont get me wrong, I love the flexability of the rotary and the engineering behind it facinates me, but with £20K of my money on the line I\'d rather have a V8
:Laugh LOL


                                       

turbo boy

This is exactly my point also, every time i drive my fd im driving it with sweaty palms "waiting" for the next breakdown to happen constantly on edge. It seems you dont drive a rebuilt rotary with your hands on the steering wheel anymore- more like with your knees whilst having your fingers crossed carefully treading on egg shells..
 
In away its kind of put me off turbos too. I remember saying yrs ago when i first started with r5gt and rs turbos that there is no substitute for turbo power but there is.... masive engines.

BlitzBoy

Quote from: Bobbit;800015For me the sound of the V8 and the brutal acceleration left a massive impression on me and I\'ve yet to have a similar experience in a rotary.

fduk me dude I need to take you out in mine, then you know what brutal acceleration is lol
"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

fil_auto

^^^^ Now, that is an offer, I wouldn\'t be refusing :)

Grant Monkhouse

Quote from: turbo boy;800019In away its kind of put me off turbos too. I remember saying yrs ago when i first started with r5gt and rs turbos that there is no substitute for turbo power but there is.... masive engines.

The saying goes "there\'s no replacement for cubic inch displacement" ;) :D

600gaz

Don\'t forget that with high power turbo engines it\'s very important to have a decent set up to stop them exploding , it\'s all in the mapping/cooling mostly .
Most people will have piggy backed ECU systems , 20 year old wiring + sensors , worn out fuel pumps etc etc etc and then expect 500bhp to last 100,000 miles , lol . Also speaking to the right tuners/builders is a must and always listen to what they say .
With V8\'s there\'s no way on earth they do 30mpg unless on a clear motorway sitting at 1000rpm . Even then it won\'t happen , all my mates 7 litre V8 cars do £50 an hour on fuel and never make as much power as all the V8 hype says  . A 350bhp (dyno-dynamics) V8 is always 500bhp down the pub and it will feel like 500bhp to most people as they make huge amounts of torque due to the shear size of the things .
Obviously a huge V8 engine making 50bhp a litre will be very reliable compared to a turbo hairdryer with 250bhp a litre but that\'s just common sense so you can\'t really compare the two in my opinion .

Grant Monkhouse

I just want an engine that\'s makes lots of noise!!! The more and the louder the better.

dthebuk

Whats the different in cost between the two (installation wise?)

Generally I\'d say its down to what you\'re after. Do you want a highly strung engine that you\'re going to worry about every time you take it out or something thats detuned and will probably never have any big issues. As sweet as a 20b is, it\'s pretty pointless spending all that dosh and not going for a ridiculous port / turbo combination when you could have a couple of fairly big power 2 rotors for the same price.

As far as usability goes you\'re not going to get better than a big naturally aspirated engine (especially if its not compromising the handling). However, V8\'s sound rubbish and aren\'t nearly as cool as 20b\'s


\'91 FC TII - Drifter... Under construction :D
:burnout

Grant Monkhouse


Will66

V8s sound awesome but then so do rotaries.  There\'s something about both, a certain uncouth-but-mean, business-like noise to both.  It\'s not a smooth, sophisticated noise like a Straight six or a V12, nor a flat blare like 4 cylinder, it\'s very cool.
RX8 High Power, Cusco Coilovers, Dotz wheels and flames. Shoe Size 12
 
Apparently putting details of your car spec in your signature means the nice folks on exile-rotorsport think you\'re a fool.  I can think of no higher compliment!

"Eat it with a chopstick!"