new motor for the REPU
Thread Starter
Joined: Mar 2001
Posts: 1,757
Likes: 25
From: Chandler, AZ
Damn I am slacking on that video! I finally was able to get out and tune it today though. I haven't had it over about 50% throttle and 4500 rpm, but that thing pulls like its going to be a serious monster! We have a couple cars to take to the dyno in the next month or 2, I am going to try and get some time for myself when we go.
Also now that its pretty much tuned except for the high RPM it has quieted down alot! It idles maybe a little quieter than the old stock 6-port did. Low rpm up to about 3000 is really loud though, it makes baby Jesus cry! After 3500 it just gets really quiet, like I can do 75 on the freeway and talk to my passenger with the window down. Its weird.
For the tuning I did, putting timing marks on my S4/S5 pulley is the best thing I ever did! If you run one of these pulleys with a distributer you need to do it, now! I have idle timing about +15 on the leading. There is no vacuum advance and I believe the mechanical advance is somewhere in the range of 10 degrees for a total of 25 max advance. I should check what the mechanical advance is to be exact but this is close enough for now. Used a wide band O2 sensor to get my AFR's pretty much 13.0 across the board. Cant wait to get it on the dyno now!
Also now that its pretty much tuned except for the high RPM it has quieted down alot! It idles maybe a little quieter than the old stock 6-port did. Low rpm up to about 3000 is really loud though, it makes baby Jesus cry! After 3500 it just gets really quiet, like I can do 75 on the freeway and talk to my passenger with the window down. Its weird.
For the tuning I did, putting timing marks on my S4/S5 pulley is the best thing I ever did! If you run one of these pulleys with a distributer you need to do it, now! I have idle timing about +15 on the leading. There is no vacuum advance and I believe the mechanical advance is somewhere in the range of 10 degrees for a total of 25 max advance. I should check what the mechanical advance is to be exact but this is close enough for now. Used a wide band O2 sensor to get my AFR's pretty much 13.0 across the board. Cant wait to get it on the dyno now!
Thread Starter
Joined: Mar 2001
Posts: 1,757
Likes: 25
From: Chandler, AZ
Well my lazy *** never got around to making any video yet but I did finally get through emissions. Passed with flying colors first shot, guess a good motor and a good cat along with proper tuning goes a long ways!
Wow, nice!!
The sound you are hearing from the transmission is probably the throwout bearing. The pilot bearing should not be turning with you're foot off the clutch, when you push the clutch in the transmission is disengaged from the flywheel and the pilot bearing turns, so if it was the pilot bearing it would make noise when you pushed in the clutch.
The throwout bearing shouldn't be turning with the clutch out, if it is slightly hanging on something, out of adjustment, or something you may hear it in there turning in which case the noise will usually go away when you push in the clutch. You might want to check the adjustment rod on you're clutch master cylinder. It may be a little too tight and need some slack put into it. Or the throwout bearing might need to be replaced.
The sound you are hearing from the transmission is probably the throwout bearing. The pilot bearing should not be turning with you're foot off the clutch, when you push the clutch in the transmission is disengaged from the flywheel and the pilot bearing turns, so if it was the pilot bearing it would make noise when you pushed in the clutch.
The throwout bearing shouldn't be turning with the clutch out, if it is slightly hanging on something, out of adjustment, or something you may hear it in there turning in which case the noise will usually go away when you push in the clutch. You might want to check the adjustment rod on you're clutch master cylinder. It may be a little too tight and need some slack put into it. Or the throwout bearing might need to be replaced.
Thread Starter
Joined: Mar 2001
Posts: 1,757
Likes: 25
From: Chandler, AZ
It isnt the throwout bearing, I finally figured out what it is. The clutch fork will rub slightly on the pressure plate and the clutch needed a good bleeding. I bled the clutch and now it holds a small amount of tension on the clutch fork and the rubbing almost completely went away.
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Jeff20B
1st Generation Specific (1979-1985)
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Sep 16, 2018 07:16 PM






