DrHengle

I read that too, Your not running any vac on the leading side either? I started to set up that way and an "expert" here told me it would not work at all..... That there had to be a stagged vac assist....I would rather get rid of the vac entirely too. So just advance the trailing edge, lock it down and cap them off?
Im going to try the 62s first and go from there. Im still hoping that the plate gets here prior to Fri. So I can try it before its gonefor the paint.

813KR$

A "expert" also told me that it is more acurate to leave the vac advance disconected? I have always run my Rx-7's with out the vac advance? I also hope you get the plate soon!

DrHengle

amazing how many experts there are, lol,
Any case I pulled the vac and locked down the trailing edge @ full advance. took a little ride, Truth is I notice very little if any difference. So out they stay. I obviously capped the vacume on the carb, What about the pods on the dizzy, any need to cap them? whats your "expert" say?

813KR$

I have changed out my primaries to 62's, I was wrong about it being too rich! My car is running alot better with the richer primaries and I am thinking about trying 65's, like my secondaries. I have also found out the 600's with th vac secondary dont have adjustable air bleeds, I now need to look into how to tap them and make them adjustable. Good thing I have an extra 600 laying around! I think since the air bleeds are supposed to richen higher rpms it should make my engine really open up the way it should?

DrHengle

Very cool, I just got my metering plates in yesterday as the car was late getting back from the paint shop (looks sweet) any way mine is running much better with the 67s in the secondaries!!! Im still a little off on the tuning, a mild stumble as the secondaries come in and my wot is not to my likings, however anyone that wants to claim that the 600 is too much carb, well, thats just not true!

813KR$

That is weird? A stumble when the sec come on? Do you have the floats set at the correct hieght? And proper fuel pressure? The fuel pressure should be 6psi and hold it through hard excelleration, mine is about 6.5 but will drop to about 6.

Personally, I havent capped off the vac advance, I would assume it is personal prefference?

DrHengle

yeah the floats are correct and im running rgulated 6psi so I should be good there, Im think im just off on the air/fuel
Any way heres some pics of my girl!!

813KR$

When I had my old engine in, stock port, mine would stumble at first excelleration and when the secs came on, but not any more, with my street port. I had also moved my screw a little closer to make the secs come on earlier, I had thought that might have helped?

Tight ride, Iam not sure about the front though? You should take another pic with out the shadow. What size rims and tires are on it?

Take a pic of the engine, and how do you make the pic go on the bottom of your post? If I knew how I would show you my ugly duckling! I NEED a fresh paint job!

DrHengle

about the pic, reply from the post reply link, there is a little button on the panel that says "img" click that and it will ask you for the url where your desired pic to be posted is located. type it in a violla.
The tires are 265/50/14's there monsters for sure but man do they hook up. Ill have to get another pic on a sunny day, its raining here and shes locked up in the garage. I set my primaries to come on earlier and the stumble came on earlier but when I delay the secondaries the power band delays and the obvious issue of getting them synced to wot comes in, I think I just have not invested quite enough hours into the test and tune part of the carb. Ill get the pics asap. look forward to seeing the duckling, If you had seen my girl before the tlc (and about 4K) she was just a poor old first gen destined for the crusher, sad sad shape.

813KR$

I dont underdstand the whole url thing? for the image.

I would love to have those tires! ! ! ! ! ! !

DrHengle

url is the www address where you are haveing your pictures hosted eg. http://www.yahoopics.com/yourpic.jpg

DrHengle

oops the board automatically made that example a woriking link, it doesnt go anywhere, but you get the idea that is what it should look like just with your info in there

813KR$

I dont know, I tried it one time with the pics of the jet conversion paper? Maybe, I will check out the yahoo site.

DrHengle

The yahoo site is just an exampe, that is whereever your pics are hosted, it just as well could have been, geocities, ipix, aol, you just have to have one of those services host your pics. your internet provider may allow you some place to store some pictures without haveing to pay for an extra service.

813KR$

My ca'

DrHengle

Right on man That car doesnt look bad, your right she needs to freshen up the paint. that engine looks about like mine just with out all the vacume secondary stuff. Ill get pics up here in a bit.

DrHengle

Excuse all the dust I havent washed it down since the paint shop and its nasty under the hood.

DrHengle

Ive adjusted on the mixtures for awhile last night and ive got it running pretty good. Its not yet to my likeing but progress none the less. Ill tinker some more this weekend and see if I cant get it right. Im 2 1/4 turns out on the screws, where did you end up setting at?

DrHengle

Whoa dude, I just noticed off that pic, just below that vac secondary pod is a vacume hose... Ive got mine tapped into the break boost line it looks like if Im not mistaken that yours is plugged off? is that right, and theres no problems with it? I was thinking that the vacume there was a necessity???????

813KR$

That vac is for the brakes and I have my intake taped for it, like stock, so I dont need it. Damn! You NEED to get headers. Rotaries run like **** with the stock exhaust manifold!

I have not messed with the mixture screws, dont know much about them, what do you know about them? What does it control?

DrHengle

air/fuel ratio = lean/rich

813KR$

813KR$

I dont know man, I posted on yahoo and still not working for me? unless you see a pic, I dont see one?

813KR$

Air fuel mixture? I havent read anything on it? Which way is rich and which is lean, is in lean, and out rich? That could really help me, the only way I knew how to richen the mix would be with the jets for low to mid rpm and air bleeds for the high rpms. That is just what I have read? That is the reason why I thought I needed to tap my air bleeds and play with that. I want to run it rich as hell then start to slowly lean it out, I WANT a o2 sensor to measure the mix ratio. Where are the mixture screws located at?

DrHengle

That is my understanding yes, the 2 screws Im refering to are on either side of the primary fuel bowl. From what I understand (now this comes from an expert and weve talked about that before) In is lean, too lean is very bad. But it makes sense to me as you back them out (recomended 1/4 turn at a time) you can smell the exhaust richen and start to see the smoke from the exhaust. Im told to just richen it enough that it doesnt smoke and go back in 1/4 turn. hope it helps and if anyone else has info on this Id sure like to hear it too.