i was thinking that i would put a early 90's na rotary in my 1970 opel gt. naturally, power and weight are the main reasons, but i was wondering if i could put say a vortech centrifugal supercharger or a eaton roots type on a 13b...i think it might be easier cause there are no turbo kits for the na 13b's and obviously no supercharger kits eitherand with a supercharger, you dont really have to worry about over boost and things like that that have been know to detonate rotaries...
anyhow, any help would be helpful...i dont have a engine here to look at, but, anyways...
thanks,
-Rob

 

I think there used to be some superchargers they dont make anymore, and someone is currently developing a bolt-on turbo kit for the 13b NA. Why not just buy a 13bt though in the first place? They aren't that much more expensive compared to fabricating your own stuff.

 

you can make a turbo kit or adjust a few things to make a turbo work on an n/a.
i know someone has the links for rotary superchargers. theres already a couple of kits.
i assume you'll be carb'd?
try www.atkinsrotary.com

 

Atkins/Camden is also coming out with that nifty EFI supercharger kit soon.

www.camdensuperchargers.com if you didn't already know about it.

 

At this time carb S\C is the only set up we offer AT this time . I am beeing told that the stock EFI S\C system is about 1-2 months from beeing done and ready to go.
Dan

 

Good! Some time to save some money!

 

yea, the only people i know of acually using a supercharger is atkins rotary. and they used a carburator on their rotaries that are s/c. i personaly know nobody that sells a super charger for the f.i. rotary.

 

the camdens supercharger kit.... gives you approx 176 hp at the wheels.... not bad.... but damn, 4k for <180whp....

 

Yeah, but that's on a stock RX-7. Being optimistic and saying that RX-7 put down an original 125rwhp, that's a 41% gain. Then upgrading is as simple as altering your fuel system.

 

interesting.... i wonder how accurate that 260 whp estimate is just by increasing the capacity of the injectors.... i had a big streetport in my n/a, wonder what kind of power i'd be looking at then... INTERESTING.......

 

well, the reason i dont want to get a turbo II motor is because of 2 reasons. 1st: im a high school student who works part time in a tranny shop for like $6/hour, so i will prob have to go junk yard surfin to get the stuff, and the turbo II is notorious for being in bad condition if you have to get it from a dirtbag car...2nd:i like the na's higher redline...so a supercharger would possibly be better for low range torque, however with say...the disco potato turbo, i could get the same effect...the major problem is heat...which im tryin to keep to a minimum...

Oh, almost forgot to ask, is there any way that i can put a 95-98 mustang ls tranny on a rotory?

the reason i ask is cause i was riding in my friend's v-6 mustang and he can do like 40 mph in 1st at 5000 rpm, and if i could get that in my opel with a 8000 rpm redline and some more power, i could easily do like 60-68 in first and that would be quite simply awesome!!
only prob is that the tranny might not be able to take the strain...but i work at a shop, so i could fix it! lol

Sorry about the ignorance, but thanks anyway,
-Rob

 

why would you want to do 60 in first... that would be the same as starting out in second with the rx7 tranny... whole point of first gear being shorter is to optimize acceleration

 

If your 1st to 2nd shift is so slow that you would be faster gearing the car to do 60 in 1st, then you seriously suck at shifting.

 

well...you guys do have a point...and no, my shifting doesnt suck. Take the mclaren for example...like 65 in 1st...even though it does have like 627 hp...but drag is not my style, so itd be about cool factor you could say...plus the opel weighs just over a ton with the stock iron block and head 1.9 liter, so, with a fc motor, itd be way less... Therefore, the acc wouldnt be as bad as you assume(you know, F=MA), but it was more of a query than actually a serious question...the ford tranny wouldnt be likely fit in the opel with the shifter locations and all even if it did bolt up to the rotary.

This post is supposed to be about superchargers, though...maybe not here, but at the opel site where i do most of my info searching, the moderators are pretty strict.

anyhow, thanks for the info, even if i already knew the stuff about the gear ratios...
-Rob

 

well...you guys do have a point...and no, my shifting doesnt suck. Take the mclaren for example...like 65 in 1st...even though it does have like 627 hp...but drag is not my style, so itd be about cool factor you could say...plus the opel weighs just over a ton with the stock iron block and head 1.9 liter, so, with a fc motor, itd be way less... Therefore, the acc wouldnt be as bad as you assume(you know, F=MA), but it was more of a query than actually a serious question...the ford tranny wouldnt be likely fit in the opel with the shifter locations and all even if it did bolt up to the rotary.

This post is supposed to be about superchargers, though...maybe not here, but at the opel site where i do most of my info searching, the moderators are pretty strict.

anyhow, thanks for the info, even if i already knew the stuff about the gear ratios...
-Rob

 

well...you guys do have a point...and no, my shifting doesnt suck. Take the mclaren for example...like 65 in 1st...even though it does have like 627 hp...but drag is not my style, so itd be about cool factor you could say...plus the opel weighs just over a ton with the stock iron block and head 1.9 liter, so, with a fc motor, itd be way less... Therefore, the acc wouldnt be as bad as you assume(you know, F=MA), but it was more of a query than actually a serious question...the ford tranny wouldnt be likely fit in the opel with the shifter locations and all even if it did bolt up to the rotary.

This post is supposed to be about superchargers, though...maybe not here, but at the opel site where i do most of my info searching, the moderators are pretty strict.

anyhow, thanks for the info, even if i already knew the stuff about the gear ratios...
-Rob

 

well...you guys do have a point...and no, my shifting doesnt suck. Take the mclaren for example...like 65 in 1st...even though it does have like 627 hp...but drag is not my style, so itd be about cool factor you could say...plus the opel weighs just over a ton with the stock iron block and head 1.9 liter, so, with a fc motor, itd be way less... Therefore, the acc wouldnt be as bad as you assume(you know, F=MA), but it was more of a query than actually a serious question...the ford tranny wouldnt be likely fit in the opel with the shifter locations and all even if it did bolt up to the rotary.

This post is supposed to be about superchargers, though...maybe not here, but at the opel site where i do most of my info searching, the moderators are pretty strict.

anyhow, thanks for the info, even if i already knew the stuff about the gear ratios...
-Rob

 

The McLaren F1 was designed to be (and still is in almost all cases) the fastest car in the world. It has a top speed that exceeds 240 mph, which I doubt your Opel can reach regardless of the amount of tuning you do. If you doubled your horsepower, you'd see acceleration to 60 about equal to original HP numbers.

 

i think a t56 tranny will mount to a rotary but you need an adaptor plate. the stock na tranny is geared pretty well, but cannot handle much more than 230rwhp from what ive read. with a 4.10 rearend 1st gear at 8k is at or near 40mph, 2nd goes to 66~68mph at redline and easily pulls past redline to above 70, it is geared a bit short for more powerful cars but suits a stock and modded na well.

 

Turbo has lag. Superchargers make the wankel feel bigger, not boosted.

 

good points, all,
and good one with the lag response, 88integrals good point with the supercharger makes the engine feel bigger, hadnt thought about it that way before...
my next question is can you use the 'disco potato' turbo, or would it be very good, on a na fc motor...if you dont know what it is(sport compact car readers should) you can find out about it on google...its made by garret.
iver heard that its too small, but i dotn know about this...it made an easy 278 rwhp on scc's project silvia with only minor other mods, and thats a 2 liter instead of a 1.3, although i do know that when a rotary is translated to 4-stroke, it makes it 2.6 liters, so that could be it

and finally another tranny related question...ive heard that a miata transmission is unusually durable, but is it turbo rotary type durable?

also, will it readily bolt up to a dc?

again, sorry about the ignorace...and thanks for the info...

-Rob