tt rotary into a vn
hey all, im just curious if anyone on here has ever managed to fit a rotary into commodore and if so can you give any advice for someone looking to get a twin turbo rotary into a shelled out vn.
You would be better off going an RB30 as it is meant to be a bolt in conversion ...
booosted
I dont think the actual fit of the motor would be anything to worry about, rotor's are tiny. I dont think it would be a very smart swap because rotories dont produce very much torque, and you will be revving it to the sh*t and riding the boost too much as commy's arent the lightest of things. No doubt it would be different though, just alot of weight reduction needed.
Just looking at the issue of torque vs weight:
VN V6, depending on model, c. 1360-1400kg (V8 +50kg)
Series VI RX-7 c. 1300kg
Eunos Cosmo (13BTT), c. 1450-1500kg (20BTT, c. 1550kg)
Weights are off the top of my head but would be within 50-100kg.
wow, you'd be in for some headaches with that sort of convertion...just sooo many things that wouldnt be compatible to bolt up, let alone tuning.
i think one of your biggest problems would be what 'box could you use? anything that will bolt up to the flywheel wont match up with the vn tail shaft and vice versa...lotsa custom made parts if you were to try.
booosted
I just dont think it would be good as a daily driver in my opinion, If anything I would have to be the 20B TT with a street tune.
Since rotories are so small, you could keep the existing gearbox in the same location, make a custom bellhousing and make engine mounts in the corresponding location.Originally Posted by sircruisealotVS
[GMHVN6]
Be a waste of money seriously.. Better off to put an LS1/LS2.
Rotary isnt the most reliable engine.
ride; [GMHVN6] Project Streeter - VN Berlina '90 mods; 65mm throttle-body / Cold Air Intake / 8mm Ignition Leads / Exhaust
future; Extractors , Cam currently; 101.2rwkw mission; 110rwkw
Banned
Rotary's are quite a good engine if you ask me, but I know of one big downside...........Fuel. Rotarys guzzle like a cheap hoe.
workaholic
I have seen V8's with better fuel economy than rotary's
Banned
Amen to that brother.
if you wanna get crazy and have cash, chuck an inline jap 6 in with a few snails hanging off the side, that or as mentioned an ls1,
rotor motor, sounds inotitive but it makes you wonder why it's never been done
Last edited by CSL; 01-09-2006 at 08:02 PM.
the holden mechanic
if you want something to put a rotor in buy a triumph and slap a 20BTT in that.....850 kilo's with the 13Bt in it so whats another 50 or so kilo's and it handles like a go kart....
LS1 or alloytec 190 turbo would be sick in the N...
hey all, thanks for the input. the reason for contimplating this is simply that is as far as i know it hasnt been done before. i figured the amount of cash id have to pump into this project would be immense, custom tailshaft, engine mounts, transmission, standalone ecu, extensive tuning etc, with that i mind im not a millionaire
at the moment Ive got the vn stripped down to the guts (after 4 light days work). the motors about to go and im working on a cage as well getting it lightened (cutting and replacing with lighter same strength if not stronger alloy).
Im not really a big fan of jap motors but you gotta admit rotaries are nice freakin machines so i figured id see whats the deal with that.
So I guess If im going to pump some money into this i should look at dropping an LS2 into the sucker? (comments / suggestions?)
Last edited by adept; 01-09-2006 at 08:15 PM. Reason: drunken entry
the holden mechanic
centrifugal charger thru a roots type blower
Better you decide how fast you want to go, then choose and engine based on that and what it will cost. An LS1 with a tune and exhaust should see you into the 11's in a VN or at the worst a 12 flat
Physics Geek
I thought that a rotary VN was already skidding around somewhere...
I can't remember if it had actually been done or if I read of a guy planning to do it. But I know you're not the first with the idea.
Be one hell of a car when it was done though.
As for throwing an LS1 or LS2 into it, the rotaries are nice, but there's something about a big aussie engine that just sounds so much nicer to my ears.
Gravity is proof that nature keeps getting us down.
Legendary Baby!
a 20B can create some impressive power figures, but doesnt have the torque to match it with the 8s and that. I would love a mental 20B in a series 5 RX7, but the torque of a gen 3 is just far too entertaining
I used to play sports. Then I realized you can buy trophies. Now I’m good at everything.
The best car safety device is a rear-view mirror with a cop in it. ~ Dudley Moore.
no probs making it fit it would be slugish as all hell commies are to heavy, you would have to do breaks driveline etc. to much of a headache wen there are so many better options go latter commie engine
Banned
VN's arn't that heavy you know.
Physics Geek
Yeah...the VN poverty pack is quite a light car when you compare it to most others on the road of a similar size.
Gravity is proof that nature keeps getting us down.
boosted!
PFFTY rotaries arnt relaiable????
imagine this... a rotoary is a very simple engine because it has not many moving parts... and 2 cyclinders
my ex girlfriends brother builds 13Bs
stock the engine puts out something like 140kw @ fly from a 1.3L
turbo them and they have MEGA potential
they use the same if not more than a standard v6 in fuel...
it is doable because the 13B is intended for RWD applications not FWD
you'll probbly need a new transmission, tail shaft ect... a rebuilt 13B will cost you about $2000-$2500
and are very simple to turbo because they only have 2 exhust ports
and the engine came in a turbo version
you'll also need custom engine mounts to fit the k frame, a new wiring loom, and a new ecu...
it has been done before.. only once i believe but this engine has some serious potential.. my ex girlfriends brother has a purple RX3 that pushes 300rwkw normally aspirated a turbo'd 13b in a light enough car can run some VERY low 1/4 mile times.. such as under 9 seconds and to be honost has MORE potential than a LS1/LS2...........
and btw... vn's arnt heavy in comparion to the rest of the commodore range.. but compared to say a rx3 they are, rx3s = like 800kg vn = 1300kg
rx3's are know for getting both front wheels off the ground on more of a angle than 45 degrees
but if you want to be prepared to spend alot of money getting this conversion happening.. personally id try and find a RX3
booosted
They dont have "cylinders" either.
In my opinion a conversion to a LS1 with the same amount of money put into it, would beat the rotary up the 1/4.
an rx3 is a little heavier than 800kg's paradox..but i know what your saying.
my bro has a rx2 capella with a 12a turbo in it, so i know i bit about rotaries from him (he's owned quite a few over the years) and your right in say it would have very good potential...its just a matter of how cost effective that power would be.
put a rotory in something like a t20 corolla..then you've got potential!...wheelstand potential.
Hey all, Ive looked around, and ive been thinking, alloytec's are pretty comon to find nowadays in decent nick. anyone know much about dropping something like a sv6 motor in. any major structural work required? cuz if not id probably look at getting an alloytec then working on getting it turbo'ed. and in regards to the whole better speeds down the quarter mile issue, im not really planning on making this an overly fast car in a straight line, i more just want it for sideways missions. So yet again, any input anyone has would be much appreciated
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