The ports on your block look really great now! Nice build!


I'll keep my fingers crossed for you on a sure first-start attempt!

Ouch, sorry man. I hate to say it but I wouldn't chance it, I'd pull it apart. You're talking about the gas seals right? The orange ones? If you know you started with the right amount, I wouldn't waste the time with a tester. It may hold during the test but once combustion pressures start, I doubt vaseline and holymar will hold it. I'd just be safe and crack the thing open.

Thanks. I'm satisfied with the intakes, and really happy with my exhaust ports. I haven't needed to port anything in years so I practiced on a pair of junk housings. Like riding a bike though, by the time I got to the one pictured, it was my third attempt.

Seriously, that's what these pretty much looked like. The secondary ports are really just smoothed and feathered almost stock ports, which in all honesty is what I was looking for. I don't want big ports, I want a civilized 400RWHP. THe primary ports though, are probably just like the ones you're referring to, the angle to the plate at the tip is pretty abrubt. I would have to do some SERIOUS cutting to make it the way I would really want but then the port itself would be huge, so eff it. I cleaned it up the best I could and we'll see what it does.

The trailing edge of the port is pretty much the inverse of this port

http://i246.photobucket.com/albums/g...9/DSC03421.jpg

David Jerome porting stolen from Charlies thread

Alright, I'm off to the hydraulic shop for some goodies :D

Damn, T! How long have you been aaround rotaries to get to this level of build quality? It looks like there is lots more for me to learn yet, your work looks simply amazing!

Thanks Max.

12 years....... 12 years with rotaries. I bought this car when I was 18.

Sad part is I've only driven her about 1,300 miles in the last 5 years. 2 years to paint, drove 1,207 miles in the year she was on the road, then Feb 2007 she came off the road for the swap, 4.5 hours of running/driving before the motor popped, and now hopefully she'll fire Friday... fingers crossed.

I hope to have the rest of the motor assembled tonight, except for the few allen plugs that I need that will be here Thursday... or so I hope.

Hmmmmm, that's assuming I can jury rig the 2-stroke can until I can build a new one this weekend. Too much to do! three weeks til DGRR!!! ARGH!!!

That's the thing. I'm not sure if it's an extra one or not. I know if it is not an extra one then it's one that should have gone on the intermediate housing since that's the only one I can't vividly recall. I'll go ahead and break it apart just to make sure I have it all together. *Sigh*

yea im busting ass to get my FB done before i leave for basic training. Time constraints suck.

TT, I went ahead and tore it down again. I had all the seals installed. I guess I did get an extra fire seal. First time for everything.

Wow.... that's interesting. Don't you feel better now knowing though?

Yeah they do, especially when you realize that there is a teflon front cover seal missing and you're going to pay 10X the price of the part in shipping to get it here by the weekend :banghead: I may have to call in a favor @ the dealership.

You've come along way from a carb'ed 12a to a 'squirted ITB 13B 6P though. I likey the motor. I thought about building a crazy n/a motor than realized that for not that much more after all was said and done, I could go turbo. Then the project became 3x what the n/a would've been. You planning on attending DGRR?

So I did get a few things done tonight. I went to the hydraulic shop and had them silver soder a -6AN fitting onto the oil feed line. Then I got a -6 - -4 adapter. A -4 would've been ideal but the size of the fitting would've required it to be drilled out that it would leave too little matterial. I generally CAN'T STAND adapters, but I can live with this. Note - this is not the actual line I'll be using..... I ordered an all black fitting to go along with the theme

http://rotarycarclub.com/rotary_foru...1&d=1237951133


Something else I decided to try, No more stock fasteners. The last motor I had I either powdercoated or painted all the fasteners. It didn't last. So this time around I'm changing everything out to be either a stainless acorn nut, or a button head. It's also been brought to my attention that I'm getting old and grumpy. Little things are starting to piss me off, like different length fasteners. So I studed the front cover with stainless and loctited them in there. Now all I need is a handfull of acorn nuts and washers. Should limit the grumpiness a little ;)

http://rotarycarclub.com/rotary_foru...1&d=1237951133

This porting was already done. It always surprised me how little time Mazda spent on the oil system. I think this 1/2 mod is something that alot of people over look when building an engine. Sorry if this makes you break the engine apart again vex ;)

http://rotarycarclub.com/rotary_foru...1&d=1237951133

Something else I thought I'd try with this build. I never liked the fact that there isn't a positive seal with the oil pump. Yeah it's machined, yeah people never seem to have a problem with it, but wouldn't it be nice if you were a little more certain about the pump not pulling in air or pumping out oil? I thought I'd give this a try. A good friend of mine has a CNC mill, he accepted my challenge and this is what we have.

http://rotarycarclub.com/rotary_foru...1&d=1237951133

Insert the o-ring, apply a smear of hylomar on the OUTSIDE of the ring only, this keeps it from getting into the pump itself, and we should have a pretty well sealed oil pump. We'll see though. I'd like to see 30 psi @ idle as opposed to the low pressure warning light flicker when she drops to idle. That always causes me a little concern. Meh, we'll see.

http://rotarycarclub.com/rotary_foru...1&d=1237951133

I'm starting to hate you :)

In a good way. Lots of good thoughts on the oiling system though. I'm all for studs as well... I'm going to use full studs in my next build instead of tension bolts...

I have no idea what you did there or how to do it. Maybe when I aim to break some things on the car with the power of the engine ;). Right now though, I'm looking to get into the mid to upper 200's.

If your oil pump isn't on yet, take a look at the galleys. THey're rough cast, with no real flow lines to them. I spent a 1/2 hour just smoothing everything out, especially on the vacuum side of the pump.

lol - thanks... I think :rlaugh: Wait a day or two until I start getting the car back together. I did some things there that you'll want to kill me over. For example, have you seen my engine harness yet?

Nice job on the oil pump. Did similar mods on mine. I used some silk thread as per Allen's (13b-rx3) suggestions, the oring was beyond my capability/willingness to invest in. Very badass though sir! :)