MONZTER

What, Fram filters are the best... HA just kidding, that was the biggest Ford Filter I could find. I was using it for mocking up the mounts and coil packs, just wanted to make sure there was room for it all. I am thinking about getting one of the pure power billet cleanable ones. Anyone seen them?

It’s actually about 1/2 inch away, and I have made urethane engine mounts for the engine and trans, so the movement is next to nothing. (those are moustache bar bushings for the engine mounts) I actually just made new engine mounts to set it back 3/4 inch

I have a new shortblock in the works. 87.5mm JE pistons with 240 rods race preped. The crank 79mm stroke has been lightened about 4 lbs and knife edged. Its at the shop getting the mains line bored. I will use this block for testing, while I work on my other one I plan for the future.

I finally finished it up. Welded the 2 halves together, polished out all of the surface machining marks, integrated the BOV, and drilled and tapped all of the vacuum fittings. Here are some new pics.

Were the pictures taken on Santiago canyon? I love driving my Z on that road

I have used a 1/2 NPT to -10 on mine, no problems at all

check these out http://www.sivalves.com/ocforeign_valvessp_nis.html They are what I have been told Nissan Comp sells. About $8.00 each and you can buy them direct. I have them in 2 heads and never a problem

What is not a pipe thread? The head or your fitting? I'm pretty sure the head is a 1/2 NPT at least my N-42 and P-90 is

I will be making my intake gasket out of the Garolite, and then the header gasket out of the same thickness annealed copper. I just debating on how thick to go.

Look into a material called Garolite G-10. This is what people use to make insulating spacers from.

I dont use the 6" long bits. I buy standard length and then use an extension. This way I have both lengths for the price of one. This is what the bit looks like. It is clog free for aluminum. I would also use cutting wax to help keep it from clogging. I rotated the TB, but it was a lot of work filling in the radius to get it to flow into the first runner. If you dont have a tig, and dont know how to build aluminum up with a tig, I would say dont do it.

Hi Derek, Mine was like Tony D said. It was a non egr manifold, but still had the bumps right in the inlet of the runners from the plenum, just no holes in them. As far as my mods I did, I opened the up a bunch by removing the casting bumps mentioned above. I then blended the runners into the plenum making the entry as smooth as possible. I opened up the runners the max possible but not fully concentric. What I did was make the runners as straight as possible to the port as I could. This means the runner are much thinner on the inside of the bend radius, imagine the shape looks the same from the outside, but a straighter line for the inside. Makes sence?? I used a 14" band saw to cut mine up. Put it on the table and cut it open. I TIG welded it back together.

The part you cant see is the problem. Mine had casting bumps right in the middle bottom of the runners where they attach to the plenum. Once you cut it in half and can see down the runners, you should be able to see how you can open up the runners to make a difference. I think the plenum is not really the problem, but the size of the runners.

Here are some more pics of the work in progress. The engine is a stock 240z bottom end that revs very quickly to 8000, With 10.5 Compression ratio and a MSA 2003 cam it made 210hp at the rear wheels. I sent the plenum to Rebello when he was doing the port work on my turbo head. He tested it and said it should flow enough for 450hp with the GT30 I was planning on using. Dave said he has seen NA cars with heavily ported stock plenums like this making 300 + HP. If you compared the stock insides to what I was able to remove below, I don’t see how it could not help BTW I also changed the flange to a 6 bolt set-up for the earlier heads as well as injector bosses in the runners. You can also see how the TB flange has been angled to help flow into the number 1 runner as well as provide a straight shot to the core support for straight 3" tubing. Jeff