Swapping...

[vin]

Good morning

I'm looking to swap from a rotary drive-line to 4A-** drive-line in my 1983 RX7, so I've started reading up on the 4A-GE.

I can get an 8 valve AE86 very cheap, BUT can I use the engine and transmission as a template for making my front and rear sub-frame? Does the 4V AE86 motor and transmission bolts up the same as the 16V 4A-** motor and transmission?

Thanks,
Vin
p.s. Any suggestions on a final 4A variant? I want the lightest engine and transmission possible and would like 120 ft-lb at the crank.

[Ivan141]

If it has a 4a engine code, then you can use it for making your template.
Why not swap in a newer rotary? Isnt that easier?

[vin]

Hi,
Thanks for the info.
As far as the rotary motors go I have five of them, three of which are nice 13B six ports with the high compression rotors. The swap would e easy, but I want a car with great gas mileage and a rotary ain't ever going to do it. My Socorro's used to get 45 mpg. I want to get my RX7 up there...

Can you recommend any transmission that's light? It only needs to hold about 120 ft-lbs... maybe a little more

And, do you know which 4A's have aluminum blocks?

Thanks!
Vin

[Gtsi-R]

i believe non... non 4a blocks..

you will need a newer engine

[vin]

Gtsi-R Wrote:i believe non... non 4a blocks..

you will need a newer engine

I'm sorry,
But I don't understand...

[Ivan141]

I think he means there are NO aluminium 4a blocks... only the heads are aluminium. The AE86's T50 is not too heavy and is the easiest option, not known for being very strong though. They stay together just fine if you dont abuse them.

[vin]

Just picked up the drive-line, man is that trans light!

[parrot]

A proper conversion will cost far more than you will ever spend on petrol.

[vin]

A lot of people have fast cars, only a few win races... but they all spend money.

I race wheel to wheel every other weekend in the summer. I Also build high MPG cars... I have fun with both.

But, I do wish it cost a little less...

[vin]

If I go with 16V, how do I find an aluminum block motor?
Thanks,
Vin