So another event and no clean runs and new issues. Went to an import Face off event this weekend. Spent the last couple weeks getting everything just right. Even went out and bought a car hauler (good idea if you race a rotary=, ahe!)

So first qualifying pass, launched at 7100rpm and the car fell on its face, went down to 1200rpm. (???) But it picked up and ran hard thru the top of third. As soon as I get 4th it has complete ignition break up bad so I had to coast the last half.

I origianlly thought it was to rich and was putting out the spark but my logs show a few high 10's but mainly it ran 11's... Knock was low, everythning looked fine?? I pulled a little fuel out went for another pass. Car hooked very good, 1.6 60 footer pulled very strong thru 1st, 2nd but middle of third gear it had same issue again so I coasted out the last part. I origianlly was thinking and praying its the coil or other ignition issue but this moring I pulled the rear leading and it was getting spark. So know I am wondering if I lost compression on a face or two. Thats about how it runs. Any thoughts?

I would have lost anyway, top 2 cars were running mid 9's.

 

Does it idle alright ? What ignition are you running ? Did you ever get it tuned ? Any ignition problems then ? How old are your plugs ?

 

No, it idles like it is running on one rotor. I unpluged the rear leading and it ran a tad worse but not a huge differance. Thats why I believe it to be compression lose on 1 or 2 faces. First pass was on 9's all around. Second and 3rd pass was on 10'5's. It was tuned last year. I have cleaned the afr's up but done no timing adjustments. Running stock 3rd gen coils w/ HKS. I know I need a T2 leading.. LOL now....

 

Pull a plug, turn it over and listen for 3 good pulses. I've heard motors that sounded blown to hell, but ended up being fouled plugs or plugs that had the toilets cracked.

 

I pulled the egi and plugs in leading at the track and turned it over with the key and it sounded and had compression. But I need to do it again with hand crank to make sure each face has compression..

 

Good luck man....... I've always been able to tell without hand cranking it.

 

well I am running a small cranking battery and not sure how fast it is spinning the motor. Sounds like good compression. I here 3 faces on each rotation. Had a guy hold his hands by both and he confirmed.. MAybe it is a bad coil. Under load it was failing and now it toast?? I guess I just need to swap it to see. I will follow up with my results. Thanks, Mike

 

Man i hate to hear this i hope its just a bad plug, coil, or wire.
What plugs and fuel were you running oh and boost?

Good luck!

 

I was on Sunoco 114. Boost was 19-20 psi (gate spring only). Plugs on first 2 passes were 9's , then I put back in my 10.5's on the third pass.

When I was back on the dyno end of last year on my last 4th gear pull I did have a tad bit of break up up top. Nothing like what happened at thye track. I have had it every now and then only under heavy loads. Is there an easy test on the coils? I need to upgrade from the stock ones either way so is the 2nd gen leading ok? Or should i go with another set up?

 

You know me, I had fantastic luck with the TII coils. My friend Dr.Hagner had ignition gremlins for 8 years. I talked him into putting TII coils in last month and that solved his problem.

Do you have someone who can lend you a coil for a quick test ? Did you check your plugs, the porcelain ? Even a hairline crack will make it run like you describe. Did you try new plugs as well ?

 

Well then do compression test and make sure its ok then i would go with the t11 coil.
I would suspect if the coil was weak it fired better on the 9's than the 10.5!
I had that problem when i had a smaller turbo with higher egts it would sputter like hell on race gas but run fine on 93.

Sounds like part of your day was not that bad , get this fixed and try again.

 

well I just pulled the front leading and turned it over by key had a smooth compresion sound on all faces ... ssishh...sishh...sishh... then did the same on rear leading and it was differant sounding ...sishh.............sishhh...........sishh.....(l onger between each compression sound) Thinking I lost a a face or two!
It crazy that it pulled so perfect on each pass until the top of 3rd and 4th. I can not understand how a motor could go back and forth. I mean after the first and second runs it idled, started perfect. Could it be a stuck side seal? Very confused and pissed at the same time.

 

Get yourself a piston compression tester. Remove the schrader valve, crank and you should see 3 even pulses. You will know right away if it is the motor.

Also, with the motor running, is the boost gauge flickering at idle?

Anthony

 

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Also, with the motor running, is the boost gauge flickering at idle?

Anthony[/QUOTE]

yes, it idles very bad. vac bounces -10 area but at the idle is very low (700 rpm area) since all chambers are not firing.. hence why I was hoping for a coil-ignition fault. I will post my compresion numbers but expecting the worse..

 

check your injectors
what injectors do you use
my tend get dirty every 3-6 months
the good ting is i have a machine that cleans them and flows them
but twice allready i have had injector get dirty on me I think its the premix oil
once I cleaned them out, the motor reved up clean

does feel like it revs on 1 rotor?