madkaw

So what numbers did it dyno out. Don't be afraid to tweek those floats . These engines like a rich mixture I swear.

PM'd you

Sounds like a weak spark. Check voltage while running . Check all grounds and associated wiring . 10volts only at the coil?

I'd say you have a bad starter . It's hard to get a good remanufactured starter these days. It's better to have an original starter rebuilt at a local shop somewhere. I've gotten 2 bad ones in a row from autozone

Throw out bearing or something in the clutch let go. It's hard to nail down noises since they like to travel around these cars. Try the above suggestions regarding the clutch.

Yep- the crank will have to be positioned correctly, but it will come out of there

Fatten her up and feel the power :0

Starter was changed to fix this issue or the issue started after new starter?

Mike If you are interested I will send you my dizzy complete with coil module everything that worked perfectly before I took it off a month ago. I would suspect your ignition, but this would eliminate that part of it. PM me if you want to try it. I believe my set up is from an 81

Just had some thick black plastic laying around and RTV'd it to the opening under the panel.

So all this time the majority of my issue has been the interior hatch panel not be sealed . It is night an day difference now that I have put plastic underneath the panel and sealed things off. It's not perfect but 99% better. So I am going to go along with all those folks that say it's nothing to do with exhaust tip length or lack of spoiler - it's an exhaust leak.

I would say it's time to eliminate the fuel system. either drop the tank or just drain it into a pan to see what gives. Pull the fuel sending unit and check both supply and return-blow thru both. I would remove the fuel rail an make sure the return side is not obstructed. Pull the inlet sides of the SU float bowls and check the filter there. Also check the fuel hoses from the float bowls to the carbs to make sure they are not collapsing under heat. The ignition next Good luck

I have heard more pros then cons on the additives. It's more of a matter whether it will fix the problem then doing damage. IMHO I would give it a shot!

Well I have been driving my Z around for a couple of weeks now with no dizzy-seems weird. I have a lot of tuning to do, but it will be clean laptop type tuning:cool: I used some basic timing specs based on how my zx dizzy was curved to get me in the ballpark. I need to tack my 17 year old son with me to punch in numbers as I am driving to dial it in better. But right now, it starts easy, idles perfect and has as much power as before. The lack of wires associated with the old ignition set-up sure cleans things up.

Well I'm going to tag on to this older thread because I think Derek had the best idea for trouble shooting this issue. I had actually bought a fog machine over a year ago when they were cheap(after the hallowen holiday). It really is a cheap, fast clean way to diagnose the exhaust fumes. I tried the "suck" method first, but it left too much to question. Inside the car with not much room to move around and it being dark, it was too hard to tell where the fumes originated from. Now the "blow" method was much better. It really only takes a couple of minutes to set things up and start trouble shooting. What I found and yet to be fixed, is that I have a lot of air moving thru the latch assembly. It looked like a steam engine coming out of there. Perfect spot to suck up those swirling fumes around the back. I haven't finished examining everything yet, but the only way fumes have access thru this point is by leaking around the vinyl panel on the hatch. The low pressure in the cabin must be sucking air around this panel(which is NOT air tight-mine anyway) and thru the hatch assembly. It would seem to me that the easiest fix here would be to seal the hatch panel by sealing some plastic sheet behind it-agree? I also noticed smoke around the left tail light , where some previous bodywork was done. Also noticed a lot of smoke out the pillar vents, but I think they are too far from the exhaust to be sucking anything in. I will update as I try to fix these

Like John said and that you admitted of not doing the proper bleeding of the MC. You will be chasing your tail if you don't eliminate that first. There could be many possibilities but always suspect air. If you have been bleeding the brakes by yourself with a vacuum, then get someone to help you do it the old fashoned way-pump,pump,bleed!!

This is what I want to do to drive my MS3 http://www.classiczcars.com/forums/electrical-s30/36969-converting-four-wire-tacho-current-driven-electronic-tacho.html

from a quick search you need the 8920 tach adapter to make that work

There are folks that sell a unit that transforms the tach to a voltage type. It's a plug and play and necessary for you to use the MSD. I am trying to have a new CB board built for my tach to do the same thing. Why are you so worried about keeping points. Get rid of them and go pertronix or something.

fun reading! L6 heads; pics and descriptions - L-Series - HybridZ L series dimensions - Stroke, Bore, Chamber cc's, etc - L-Series - HybridZ Custom Cylinder head building.. Whatâ??s involvedâ?¦ - L-Series - HybridZ

81-83 ZX flat tops

Keep what you got and get a lighter flywheel for quicker response . Add that to triples and lower gears=fun! Seriously - most folks wouldn't be able to discern the difference in these engines(rod/stroke ratio), but a lightened flywheel would be more evident. Go over to Hybridz and look for at thread 200rwhp and street able

You might think about flat top pistons instead of the dished. Triple carbs or modified SU's will help reach your HP goal. There's no reason why you can't get 200 at the crank with modest upgrades. I think I have about 200 at the crank and it's fun. Don't forget about gearing and trans to add to the fun

That 400$ can be better spent. I doubt you are going to build a motor that would require more breathing than what the stock valves offer. Spend the 400$ at rebello porting the head

I am currently doing the exhaust fume chase myself . I'm thinking the grommets were the big source of my issue-any many others. I am trying the smoke test and it seemed that the smoke was drawn in that area. I guess I will see when i drive.