Well i may aswell get this up here as this has turned into abit of a project!!! Short versionis that i started build a custon twin exhaust for the car finished it off when to fire up the car and the water in the system had all turned to oil! seals had gone. No im in the process of rebuilding this while i wait to get my 20B FD back.

Pic of the car when i first picked it up



Replaced the wheels with FD ones



Exhaust bits



mid box made:





rear mufflers



mocked up rear sections



Manifold bits







And 50mm throttle bodies

 

Some more here

engine out, looking a little worse for wear!

 

Is the whole exhaust stainless? Looks very nice!
Do you plan on doing any kind of porting to the motor?

Do you have different wheels on each side of the car lol?

 

The manifold is thick guage mild steel but has been coated so it doesn't rust. The rest is 304 stainless.

As for the porting yes a large street port that i did that yesterday! left the Aux ports alone and just did the primary and secondaries.

The wheeks are all the same but you have just given me an idea

 

Not totally finished the rebuild yet but here is a sneak peak

 

i'm really liking those throttles! oh, and great job on the exhaust. would like to see pics of the port work.

 

Very nice! That exhaust looks great. What kind of ECU are you using to run those throttle bodies?

 

Greddy E manage Ultimate. Plenty of mappable properties.

Yes will get som eporting pics up soon

 

Here are a few more for those intrested:

You can see here the increased size of the ports scribed in the ink





The new hosing to the various actuators / ports





She is all but back together now except the wideband A/F meter which should turn up on tuesday. DAM YOU WEEKEND!!!!!

 

Well the lump is back in. Just a matter of some wiring to play with, sort out the fuel lines and hopefully we'll be running again.

Few of the engine in. The throttle bodies look a little more purpose full now





With the filter on

 

Nice!

 

Well we're nearly there!!!! Few issues in the throttle linkage department but should have the multipoint linkage adaptor tomorrow to sort that out. The injetor clips in the EGI are Square and the turbo II top feed injector plugs are rounded so need to wait for those to turn up too!!!

Next job while i'm waiting...

 

The engine had to come back out as the inter plate had a huge split in it (through form water ways to the Eshaft so not visable). Anyway ii swaped the plates out for a set of 4 port TII ones which i had intended to bridge port them. After a few conversations with people i decided instead i would do this.



Then i looked at the fueling. In house made Billet fuel rails and 4x TII top feeds.

 

Nice! This thing's going to be extreme

 

HA HA HA the beginings of the Peripherals. Nicely mocked up. Few more trims to make then tomorrow will weld it up. Sort the ports inside then can get the lil beast back togther.

 

I think your project made a turn for the better! What are the goals for this car? Is it going to still get some street time?

 

Goals are just see what happens to be honest!

Err yeah loads of street time its my daily driver

 

i like it.

i've got two questions though:

1. did you do calculations for the runner length or is it simply the result of the materials you had to work with?

2. i see the tack-welds for the mockup, but do you plan to use flanges at the interface between manifold and port runners or are you going to use rubber/silicone couplers?

 

The runner length was kinda of work with what had but loosely based on mazdas old factory port design.

As for the tack welds they will be fully welded inplace at the point no flanges or rubber couplers.

 

Haha, I love it. I plan on undertaking a very similar project over my summer break. Keep this thread updated!

 

okay, i think i'm a bit confused. if you weld everything together as is, how are you going to assemble the motor?

 

There are a few people with fairly low idling peripherals now in the UK i don't really see the problem with it being a daily driver. Ok the power is at the top of the rev range but if your driving fast then thats where the fun needle should be anyway.

Will keep you posted. Should only be a few days until this is running


The 2 inlet pipes are not attached to each other but are welded to the rotor housings. At the top of the bends there is are 2 seperate flanges which the ITBs will be bolted to. So the rotor housings are completely individual still.... i hope that makes sense

 

okay, i think i get it. i'm just not used to seeing it that way.

 

Holy ****.

 

JM Fuel rail in place. Wasn't where i wanted it to go but the throttle linkage was in the way so next best place.



Quick one of the rails/injectors on with the filter