oldrx7's 1985 Mazda Cosmo

[shizzl]

Yup no need to piss around with the counterweight, yours will already be matched to your rotating assembly too

[kiwi808]

While it can be fun to change cars, the current market isn’t great for changing at the moment. There seems to be a lot of cars for sale at the inflated prices people were paying when interest rates were 2%.

If you sold it, what would you get for the same monies? I was thinking of selling the Ute but these are the questions I have been facing so have decide to keep it for now and maybe tweak a few things. 
 

So I vote to keep it. It’s a cool car and definitely a bit different to a batty/808/323 etc.

By doing the manual swap and getting it certified will probably make it easier to sell in the future too. It will be like a new car! Besides they are super lush to cruise around in (by design) and has the extra doors for extra… people.

Keep it, manual swap it. Cert it and enjoy it. Then maybe in a couple more years think about changing it up.

[440bbm]

maybe a churbo setup in there will bring some new found fun with it instead of selling.. 

 

[oldrx7]

Yeh for sure.  

I don't think I'll sell it, it would be more a swap for something else kinda deal ... but yeh, basically come back to the same conclusion as kiwi808 said above.  Just the mental gymnastics I go through routinely about what I'd like to have vs what I've got, and keeping my expectations realistic.

 

Would love a mildly modded 13b turbo, keeping somewhat quiet and subtle, but with a bit of go when wanted, and who knows, perhaps one day that'll happen, but that'd be years away if it does.  As with most things, budget related would be the big hurdle.

[kiwi808]

Just a mildly ported motor would be cool too. Back in the day the tall port/extended port (now called a street port?) would make a big difference but wasn’t tooooo noisy and obnoxious. You can then strap a churbro to that porting so it’s also future proofing!

Pity the 12a turbo motors from the cosmos are so spendy as that would have been cool too…

[kiwi808]

Also, Titans!

[440bbm]

yeah a good stagey be an improvement, decent ignition and better inj system to ditch all the rubbish, essentially go to an IDA injection system and be a way different animal 

[yoeddynz]

On 28/11/2024 at 11:19, kiwi808 said:

Also, modgies! 

Good call. 

[HighLUX]

Done a few garage floor manual swaps before. Its pretty straightforward if you have all the bits and take your time plus a good set of axle stands to get it nice and high off the ground

Can come offer assistance/advice when you start doing it

[shizzl]

Sing out when your ready @oldrx7 , happy to mission down in the ute and lend a hand bench press gearbags.

 

bonus is you don’t have to deal with the massive Jesus nut

[kiwi808]

I feel like you should live stream this so we can chop beers and scream encouragement from the comfort of our chairs.

[oldrx7]

Cheers bro’s @HighLUX and @shizzl - might end up yelling for help along the way.  We’ll see  

I think I have all the bits, minus clutch master cylinder and lines, but figuring those can wait till the old box is out.

No set date yet to begin - but next few months might get stuck into it. 

[HighLUX]

Does the auto driveshaft and crossmember work with a manual box or do you need factory manual/custom stuff. If you have a pedal id go for a new clutch MC/slave then get a roll of brake line and make up a new one to suit 

[oldrx7]

Others have told me driveshaft should be the same, crossmember on the car now looks like it’d line up with gearbox mount on manual box, but I haven’t measured, just eyeing it up. 

yep got the slave cylinder with the gbox and will source the master and lines during the swap. 

[cletus]

Are these the same as S4/5 rx7 underneath? On those the auto and manual crossmember mounts are in different places on the floor and that can be a pain in the bum to deal with 

[shizzl]

51 minutes ago, cletus said:

Are these the same as S4/5 rx7 underneath? On those the auto and manual crossmember mounts are in different places on the floor and that can be a pain in the bum to deal with 

Pretty sure these share the s2/3 rx7 running gear, HC shared the FC base.

 

[oldrx7]

19 hours ago, cletus said:

Are these the same as S4/5 rx7 underneath? On those the auto and manual crossmember mounts are in different places on the floor and that can be a pain in the bum to deal with 

Not 100%, hopefully Shizzl is right.  HB's could be a mis-match hodgepodge of stuff.  Suspension is same as FC, but gearboxes etc were similar spec to the s2 and s3 rx7's, so hopefully mounting etc is all the same.  Next project update will be progress with gearbag removal, promise!

[Thphantum]

Got jack stands, ramps, jacks, car dollys etc if you want to borrow. 

[Raizer]

Trying to remember back, but we fitted an S5 engine and box into a piston powered HB coupe years ago, pretty sure the box bolted up with either the auto HB X member or the FC one.

90% sure the driveshaft had to be modified, might have just been a yoke swap though. 

Used a B1600 clutch master.

100% sure I'm unkeen to ever swap the pedal box in one ever again.

[oldrx7]

8 hours ago, Raizer said:

 

100% sure I'm unkeen to ever swap the pedal box in one ever again.

haha, yep I've read it's a prick of a job.  Maybe mine will be different lol.