Just awesome mate Will follow closely


http://www.aeromanagement.com.au/blo...r/racecar.html

Seen a few 13BPP SC'ed street cars on NZ forums. will try to find them

 

Amazing work. Can't wait to see the response when this thing starts to run...

 

What ecu are you planning on running?

 

i'm wondering why the runner flange has 4 holes in it..
is this a 4 rotor and you're just not telling us

 

That should work out a lot better than I did. I didn't have access to any of that fancy machining equipment, but I wanted a port outlet "shorter" than the diameter of my inlet, so I rough bored with a drill press, zapped a steel tube into place, and filled in with epoxy.



Notice the crack. The unsupported section of housing there is about .002" thinner than the rest of it. Whoops.

I'm throwing it back together and towing it to races this year to see how well it holds up. I'll miss driving it on the street, but oh well.

 

Update?

 

Well, I don't really have any major updates, I've just been doing menial tasks like cleaning/grinding/painting engine parts and prepping everything for assembly.



Drilling/tapping TB housing:




Milling out extra material in the barrels; this was a big weight reduction but took about 4 hours per barrel:





Finished flanges:




After hearing about bits of epoxy breaking off from the intake port and destroying motors, I decided not to chance it and take extra precautions. I shaped 1/8" steel pieces for each port, then welded them to studs that I welded into the intake ports. The port runners were then backfilled with aluminum Devcon and the steel pieces primered.





I also ordered a pair of Kirkey aluminum seats and RCI 5-point harnesses, so my brand new Sparco is up for sale. $500 OBO + shipping for the seat and rails.

Thats all for now folks.

 

thats some beautiful machine work on the barrels
i look forward to seeing this particular project when its done

 

Excellent, excellent work man!

How I wish I had a machine shop.

 

I've never heard of that. I've used epoxy in the intake manifolds for years and never had any trouble. (It takes a lot to convert a '81-85 12A manifold to '79-80 spec!)

One thing I did notice, and pardon if you're not done yet, is that your epoxy appears to be flush with the housing surface. This is wrong, it needs to be inset a bit. Racing Beat recommended 1/8" of clearance for if the Devcon expands.

 

The steel pieces are recessed 1/32", it is hard to tell from the pictures.


Also, anyone know what would be the approximate power limit of a 80% 110 leaded/20% methanol mixture before I have to bump up to C16?

 

I impressed and very motivated thanks to you... I also have that kind of machine-park at work. Work as a 3axis CNC-operator with two mills. One Matsuura and one FIL. I've also full acces to those after work and have done some parts to my ex-engines. Keep it up!

What CAD/CAM do you use? I mainly use MasterCam X in my work, and trying to learn Inventor 2008 at the moment.

Regards Tegheim

 

I don't think that your HP limit will be from the detonation resistance of the fuel as you increase boost with 110 octane and methanol, but rather keeping the exhaust dillution of the intake charge in check as you increase boost and therefore exhaust backpressure.

I was just reading that when Mazda made its turbo race engines they chose bridgeport instead of peripheral port.

My guess is the P-port is always open where as a moderate bridge is shrouded by the rotor flank at times.

The book also said Mazda had a system to open the wastegate under lower rpm/load to help engine response. I am guessing move also reduced intake exhaust dillution.

I think you will make a boat load of HP with a huge exhaust housing and a couple huge wastegates with runners designed for WG flow, it would just lack the response Mazda was looking for on the road course.

Awsome work BTW!

 

Nathan, make me something

 

just been reading this thread...im amazed at how good this is.great machining work.
keep up the updates....

 

wow, going to be watching this thread.

 

This is the first post I have seen in about 3 years that I thought was worth responding to. "Very nice work for a 24 year old." I just wish I had some spare time to work on my projects. I guess I have to re-evaluate my priorities again.

 

Thats gonna be one heck of a motor. Should sound like a beast when your done.

 

damn.....speech less

 

update dammit

 

+1.....million

 

I will inform you guys the motor is assembled. With Bus only really being able to work on it on the weekends, and with his drinking issue(just kidding), he can only take on small projects. Otherwise, with his work efforts, the car would already be complete.

Jackson

 

Sorry, haven't really made a lot of progress on it lately, little setbacks keeps taking up too much time. That, and certain forum members who can't make up their mind J/K.


Here are a few pics of small projects finished. I will have some good stuff up after next weekend.

Reinforcing the clutch fork for the new clutch. Heaviest single disc ACT makes for the 7. Wish I could have went multi-plate, but I could barely afford this one:





Attempt at making a more efficient oil pickup:




Kirkey aluminum seats:



Started on the cage, just have the main hoop plates welded in:

 

Just a heads up. I have the same clutch plate in my T2 and it kept snapping the fork pivot ball. I had to have one machined out of a harder steel. Something you might consider since you went through the trouble of reinforcing your clutch fork.

 

Speachless...............