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-   -   running on one rotor? (videos inside) (https://www.rx7club.com/general-rotary-tech-support-11/running-one-rotor-videos-inside-678389/)

OneRotor 08-09-07 12:31 PM

running on one rotor? (videos inside)
 
So I just rebuilt my carb on my '82 (RB Holley 465), and it sounds like it's running on one rotor now. Can someone confirm that it is running on one rotor for me?


http://video.google.com/videoplay?do...20630608&hl=en


http://video.google.com/videoplay?do...89937447&hl=en

OneRotor 08-09-07 06:25 PM

to the top

diabolical1 08-10-07 12:09 PM

to me it sounds like timing. did you remove the distributor for any reason?

are you sure there are no vacuum leaks?

OneRotor 08-10-07 12:33 PM

i can't get the dizzy out of the block, and i can't rotate it either, so timing was not changed. There shouldn't be any vacuum leaks, but i'm going to check when I get home (provided I can get it running)

diabolical1 08-10-07 02:17 PM

okay ... i just noticed that you have another thread going in the Gen I section. i casually browsed it, so if i missed something, it's on me.

anyway ... first thing's FIRST, pull the entire intake back off and find out for damn sure if you're engine is a bridgey. if it is ... a 465 is not going to do the job. it may idle normal (for a bridge), it may not ... i don't know, but i do know that it's not going to make power. when you re-assemble everything, make sure that there are no vacuum leaks.

second, since you didn't touch the dizzy, you're probably just dumping hella fuel to make it sound like that. sorry, all i can do is guess since the video is all i have to work with. what do the plugs look like after running?

OneRotor 08-10-07 03:50 PM

well I finally broke down and bought a compression tester today, and my 2 year hunch was correct. stupidly low compression.

f&r: 45/45/45

It looks like the PO either lied to me about it being a rebuilt motor, or it was rebuilt with some bad apex seal springs. I'm going to get some SeaFoam or ATF to see if some soaking will do the trick and free up the seals. I'm bummed :(

diabolical1 08-11-07 12:16 AM

how did the car behave before you rebuilt the carbie?

OneRotor 08-11-07 02:58 PM

it was a bitch to start after sitting for a while, because it would flood. When I got it to start, it worked perfectly fine. Idled well between 1k and1.5k, pulled like a banshee up to redline.

I ran 2 quarts of water through the motor by spraying it down the carb, to steam clean the combustion chambers, and then was about halfway through a can of SeaFoam, and high pressure oil started spewing out of my filler neck. I'm thinking that it's my oil control rings are bad and venting combustion pressure into my oil sump, causing an overpressurization, and the spewing oil. Does this sound reasonable? I thought that the huge oil leak that I found yesterday was coming form my vent tube that wasn't connected, so I connected it and it stopped the big oil leak, but now the oil is pushing itself past the filler cap and spraying out all over the place.


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