CG13 to GA16 conversion. Exhaust?

[Enuo]

How badly is the GA16 exhaust manifold from an almera misaligned from the micra system? Is a custom manifold the only way? Doesn't seem to have been covered here or over Cisco way...

 

[karlj]

You'd use the ga mani with the ga engine and make a custom downpipe

 

[Enuo]

awesome, is what I was hoping thanks

 

[NeX]

you'll need a flexi too

 

[Enuo]

Is a flexi piece a necessity or a nicety?

 

[Stani1029]

Will there be any engine movement?

 

[Enuo]

No more than than there was on the CG...

 

[Stani1029]

Get a flexi then. Cg's have flex on the front joint

 

[Enuo]

could i use almera flexi? will have whole donor car so the more of it i use the more moneys worth i get

 

[Noddie]

could i use almera flexi? will have whole donor car so the more of it i use the more moneys worth i get

Why wouldn't you be able to?

 

[frank]

could i use almera flexi? will have whole donor car so the more of it i use the more moneys worth i get

sure, just join the pipes under the driveshaft eh, or else buy a £74 stainless steel 4/2/1 mani (+ the usa shipping costs ).
the janspeed mani gets away without a flexi because its so thin and flexes with the engine mounts, but any solid mani will need one really

 

[NeX]

you can use the one on the almera between the bottom of the down pipe and the cat, but if you make a custom down pipe it will need to flex

 

[JoeK11]

There's no flexing bit on a stock cg exhaust is there? Why would you need it for the new one if engine movement is the same?

 

[frank]

There's no flexing bit on a stock cg exhaust is there? Why would you need it for the new one if engine movement is the same?

the cone fitting at the bottom of the 1st cat, with the spring loaded bolts is the flex joint joe

 

[JoeK11]

Ahh right... It doesn't do much flexing... :/ well not as much as I'd expect. Cheers though

 

[MacGayver]

My custom exhaust GA16 into my Micra Super S

and Catback

 

[Enuo]

Thread from the dead but I've already made like 3 threads on this topic already so don't wanna make another for one little thing. I know the almera GB will fit without mount changes etc but the no of splines on the almera diff is different to micra. Can I make a hybrid almera/micra driveshaft by disassembling the GB end CV on the micra shaft replacing with the equivelent part from the almera? That way I can use almera GB which will make boost a little easier for the mechanical stuff to palate

 

[karlj]

Can't you just swap the hubs?

 

[Enuo]

I think the almera driveshafts are longer though so would have to chop them

 

[h701micra]

Its easiest to chop your almera and micra shafts and stick em together. Saves a lot of hassle with hub changes etc plus it gets you the right length
That's how I did mine and it works perfectly
I looked into bearing change to accept larger cv joints but all the bigger bearings didnt fit the micras shafts

 

[Enuo]

So the cv inner and ball bearing race on the micra shaft won't fit in the almera cv outer?

 

[h701micra]

As far as I remember no unfortunately
The bearing fit the bigger shafts and micra shaft is just too skinny.
Not saying its not possible at all but I tried almera, primera, sunny and 100nx to no avail. Still have all the shafts kicking about too if ypu need a spare

 

[Enuo]

Thats fine, what about a hybrid clutch then what can I mix and match, or will the almera clutch fit? or am I looking at a high spec micra one for boost duty? If so I figure the micra clutch will handle a standard 100hp

 

[h701micra]

Only guessing but if I remember right a standard ga16 clutch should fit. As for mixing and matching I couldn't say.
For boost duty providing I'm correct with the ga clutch I'd go for your high spec clutch there

I'm a bit lost though. Read your blog but im none the wiser. Have you done a ga16 conversion? Or high spec cg13 with ga gearbox? Might be able to help you a bit more then with this info

 

[Enuo]

I have the doner car sitting in the previous owners drive, but I want to do the conversion in 1 weekend so need to plan everything out. Will get the info all together in one place on my blog after.

 

[h701micra]

Its possible to do the conversion that quick. I did it myself over a weekend. Except drive shafts as I sent them off to a friend. That would be your only hold up
What are your plans for your driveshafts?

 

[Enuo]

keep gb and driveshafts stock, am cutting the chassis leg and welding it up (Tigged by an aerospace coded welder, so strength loss is pretty much a non issue) to clear the water pump. Will probably countersink the bolts too.

 

[h701micra]

Won't that pull your gb mount out of line?
Your cg13 gearbox will fit onto the ga16 block saving you the driveshaft issue? Unless that's what you meant?

 

[Enuo]

yeah thats what i meant, micra gb and shafts, almera engine.

 

[h701micra]

Ah well jpbs a good un then. Lookong forward to seeing how it turns out

 

[Enuo]

me too!