BPT or B6T FWD into NA6?? am i just STUPID?? hmmmmm

Dweezle · Postby **Dweezle** » Sun Dec 21, 2008 6:53 pm

Just wondering if thats possible? those pesky lil GTX engines into my NA6? with it being front wheel drive can you still just spin the engine around, hahah.. PLEASE DONT SLAP ME :oops:

Or even a B6T from i think the 323 Astina's?
Ohh dear i feel a FLOGGING coming along

adamjp · Postby **adamjp** » Sun Dec 21, 2008 7:13 pm

I've never done it but IIRC it can be done - sort of.......

The block is like any other B6 block. If you change the plumbing around to the right holes you will get it to fit into the engine bay and mate up with the heater, radiator, etc. Put the stock MX5 inlet manifold on and it is getting better.

The down side is that the turbo points the wrong way and therefore the B6T manifold is useless.

In the tech section there is a writeup on doing this to a BP engine. Good writeup too.

SuperMazdaKart · Postby **SuperMazdaKart** » Sun Dec 21, 2008 7:39 pm

Can be done, but not a direct bolt in swap though.

The Familia engines (I don't think the Astina ever got these engines from the factory) will need a few things changed over using some parts from an MX-5 engine.

Familia has distributor instead of the MX-5s Camshaft angle sensor, change that over & you'll need to ditch the standard Familia ECU as well. Not enough room in the MX-5 engine bay to fit the distributor, unless you cut a hole into the firewall..

Turbo & turbo manifold won't fit in the MX-5 engine bay either so will need a custom manifold or an aftermarket version from AVO, Flyin Miata etc.

Will need to knock out a welsch plug on the Familia engine block above where the waterpump is, then connect the MX-5's water plumbing fittings.

The oil dipstick is in a different location between the two engines, I can't remember if it actually needed to be changed or not. Not hard to do though.

I think there might be a difference in oil sumps as well.

Dweezle · Postby **Dweezle** » Sun Dec 21, 2008 8:47 pm

WOW.. i thought it would be shot down way more than this.
Thanks guys.. I can get my hands on one of a Familia, and just curiosity got the better of me.
I will have to look deeper into this.
Very interested now

Fatty · Postby **Fatty** » Sun Dec 21, 2008 8:49 pm

its been done a few times afaik

Steampunk · Postby **Steampunk** » Sun Dec 21, 2008 9:04 pm

Sabretooth has done it way back when, shoot him a PM.

SuperMazdaKart · Postby **SuperMazdaKart** » Sun Dec 21, 2008 10:32 pm

some diagrams

MX-5 B6-ZE

Familia GTX B6T

Familia GTR BPD

Familia BPD left, BPT right

Postby **mx52nv** » Sun Dec 21, 2008 10:38 pm

Use the bottom end out of the Familia GTX/GTR and the head off the MX5 and you are sorted.

Makes it easier to match turbo/supercharger kits as well my friend.

That is what I've been doing for close to 10 yrs now

Dweezle · Postby **Dweezle** » Sun Dec 21, 2008 11:45 pm

Use the bottom end out of the Familia GTX/GTR and the head off the MX5

Yeah.. basically what i was starting to come to the conclusion off..
is it hard to get hold of GTX engines and parts now??

Thanks for the engine diagrams.. most usefull..
Need to sleep now. But will be right into this tomorrow morning..
AHHHHH i love 4 week production breaks.. :lol:

all you suckers at work

thanks again guys

SuperMazdaKart · Postby **SuperMazdaKart** » Mon Dec 22, 2008 12:04 am

considering that the same engines (except for the BPD) were also in the Caprix XR2, Ford Laser TX3, nope they aren't hard to find

crzymx · Postby **crzymx** » Tue Dec 23, 2008 3:47 pm

Dweezle wrote:WOW.. i thought it would be shot down way more than this.
Thanks guys.. I can get my hands on one of a Familia, and just curiosity got the better of me.
I will have to look deeper into this.
Very interested now

Your not reffering to that gtr 323 that was selling for like 4g's that was imported to australia but he couldnt get it registered?

Dweezle · Postby **Dweezle** » Tue Dec 23, 2008 3:57 pm

No no.. i friend of mine has a TX3 with the Familiar motor in it.
Car has blown one to many gearboxes.. lol.. so is just sitting there.. couldnt stop thinking about taking the engine of his hands

SuperMazdaKart · Postby **SuperMazdaKart** » Tue Dec 23, 2008 4:01 pm

not a gentle driver, haha...

adamjp · Postby **adamjp** » Tue Dec 23, 2008 5:54 pm

not a gentle driver, haha...

Possible.
Not a good gearbox....they were shite actually. The centre diff was not 1:1 but more like 0.94:1. When 'locked' for traction in a rally car they tended to grenade.

A very good friend persevered with one in the NSW Rally championship for a couple of season before parking it in a tree down Narooma way. He bought an Escort after that.