Proud new owner of a Cosmo

The 20B uses 6 litres of oil. Penrite is the brand most Cosmo owners use in Australia HPR10 or HPR30. Rotaries burn a bit of oil and the synthetic oils don't burn so well and can do nasty things to the inside of the rotary.

Its still cold where I live (Canberra, Australia) and as such I'm warming my 20B Cosmo up for about 10 minutes before its doing anything. It does not move until the first two temp notches are passed. Well I start rolling it out of the drive way when it hits the second marker. Then minimal revs and NO boost until normal operating temperatures are reached. Thats probably a bit of over kill. But I'm a cautious person. Well I am when it comes to my baby!

There are also some custom made coil overs available in Australia. DMRH can put you in contact with the seller. Rather stiff (the stock Cosmo shocks are very soft) and as such may not be good for everyone. I got them on mine and have never looked back.

Also congrats on getting a very nice looking 20B Cosmo!

Cosmo owners have a strong online community and generally speaking we all try to help each other out. So if you have any questions, let us know.
 
The 20B uses 6 litres of oil. Penrite is the brand most Cosmo owners use in Australia HPR10 or HPR30. Rotaries burn a bit of oil and the synthetic oils don't burn so well and can do nasty things to the inside of the rotary.

Its still cold where I live (Canberra, Australia) and as such I'm warming my 20B Cosmo up for about 10 minutes before its doing anything. It does not move until the first two temp notches are passed. Well I start rolling it out of the drive way when it hits the second marker. Then minimal revs and NO boost until normal operating temperatures are reached. Thats probably a bit of over kill. But I'm a cautious person. Well I am when it comes to my baby!

There are also some custom made coil overs available in Australia. DMRH can put you in contact with the seller. Rather stiff (the stock Cosmo shocks are very soft) and as such may not be good for everyone. I got them on mine and have never looked back.

Also congrats on getting a very nice looking 20B Cosmo!

Cosmo owners have a strong online community and generally speaking we all try to help each other out. So if you have any questions, let us know.


lotta oil... well i guess its thirsty for it. Its warm down here but. Its just my summer car and the hottest it can get is 37'c. Still Looking to get my Compustar 2 way alarm/ auto start in. Does anyone know the wire diagram for this? Also speakers are blown so they are being replaced and Im not fimilar with mazda wiring. so if anyone can tell me the neg and posi for fr and rear that would be great. Im very tempted to insure the Cosmo.

As for suspention. I like the felling. I would just go with springs since its just a cruiser but still no luck with any and also a aero kit. I guess These Cosmo parts are tought to come by ... =-( still love it tho. Had an offer to trade for a 04 rx-8.. I just smiled and said no can do. Once a turbo .. always a turbo . Also got my 2.5 Pajero turbo deisel. slow as hell but its jdm. love em all
 
Last edited:
Where are you located exactly?? I have yet to see a Cosmo in and around Vancouver. Would love to see it some day!
 
Where are you located exactly?? I have yet to see a Cosmo in and around Vancouver. Would love to see it some day!

Surrey area. I beleive theres 2 but I'm not so sure. Ill have it out soon=-) I'm just hoping sep weather will be nice.
 
Speaker replacement I got a car audio shop to do mine. They had no issues. Looks stock, but sounds MUCH nicer :)

DMRH can probably answer in more detail though. and yes you SHOULD insure it!
 
Does anyone know any wire diagram for autostart/alarm/turbotimer? I got a compustar 2 way I like to arm it with. Down where I live ther is a big theft/vandalize issue(sorry for my spelling)
 
E-JCESE
JCESE-102059
=-)Im goin to air care on oct,1-b-day!
It will also be my second time take the car out as its been sitting and raging for some pavement use.
 
G'day from DMRH

Happy to report your Cosmo's birthday is................

JCESE-102059 = 16-JUL-90

As for the speakers on your Cosmo. The fronts are easy to determine what is POS + NEG but the rears are not that simple & to date despite having changed many rear speakers I am still unsure as the schematic diagram doesn't show it nor do the original speakers.

Mostly, an aftermarket stereo means you measure out the wiring from the dash & "Bingo". However there is a trick I was told once by some "Stereo-head" that if you install new speakers & the bass sounds really flat, then try changing the polarity. If the bass increases then it was reverse polarity. Something to do with the speaker coning pushing instead of pulling etc etc.

REgards
 
another way to tell if your polarity is out...
fad it to the rear, balance to one side give it a good listen, balance to center give it a good listen. go back anf forth if u have to.

There should be more bass while in the center, if more bass when running one speaker, then the polarity is out.

this is easier to tell on big quality speakers. smaller speakers its abit harder to tell.
 
Hi
Cosmo looks good I have a 20b type S also in red a 1992 model but I have managed to get a leather interior from a 13b sx which I will be swapping over in to the 20b it also has the dealer fitted kit on it including front lip and rear spoiler and the side skirts with the cosmo logo that lights up which I now intend fitting to the 20b.

it has mazdaspeed lowered suspension on it if I can get the part numbers of them I will let you have them as it gives the cosmo a real nice stance and the zoom zoom logo on the springs (nice touch)
I had only done 500kms in mine when I had to have the engine rebuilt due to apex seals going on one rotor,, hope you don't have to shell out for this job yet as it was a real ouch in my wallet
enjoy the Cosmo I am sure you will
 
Sad new everyone. Due to bills set back and new home the car is now for sell. Now dont hate me for this. im only asking 7500 for my gorgeous cosmo. pleast spread the word as there isnt many and mine is in minty shape. very sad to see it go but 2 morgage is a kick in the ass. again thats 7500 can. I an im langley bc canada. this car was bought 2 years ago for 18,000 by last owner. Only way I will keep it if i win the lottery or if my audi sells. forced sales are sad...
 
=-( im hoping on the lottary tick will save my ass, or the audi.

and Yes It can be imported to states and be street legal
 
Damn I would love to buy the car man, but not too sure how to get it registered here in the states & I would have to sell one of my current cars. Good luck with the sale tho.
 
Thanks guys. there forsure is a way to get it to us. Just take some tiime and patience and some money of coures. but there is a price to pay for a cosmo lol.I will only sell this car to a mature owner. I cant sell it to punk kids to tear it apart. I kempt it stop for a reason (other then hard to find parts haha).
 
Back