Water in the exhaust port
06-05-2009, 05:15 PM
#42
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Join Date: Apr 2009
Location: Knoxville TN
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The one I have is stamped 108. Looks like another part I will add to my list on the next parts order. Thanks for that number! 
Clears things up.
"BTW...I'm jealous. You have DJSeven AND Landers at Rotary Ressurection in your area. The closest shop familiar with the FD to me was about 10 hours and two States away."
Wasn`t always this way. Years ago when I was really into RX7s & performance, the closest I had was Pettit in Florida. I bought my first engine from Rotor Reliability & Racing in CA mid 94. Wished I would have known of Pettit then but he may have just been getting started. The Pettit motor ( Bought in late 96 ) I have is still in my 83 & runs very well at 55K miles or so. Top end isn`t what it used to be (Neither is my nerve to get the car there either or want to die doing 170 MPH ) but at least it ISN`T drinking a quart of oil every 200 miles like the other engine did near the end before I got fed up with it. I will say that Pettit clearly did build me a better motor. If I ever need another block built, I may let DJSeven do it. He is about 15 minutes from me unlike the others that you state are 10 hours away. I have driven to FL a few times & stopped in to see Cams` operation while I was at the beach in Ft. Lauderdale ( Think he has moved since ) & it was a 10 hour haul for me too. I have one other source here for rotary repair also. Went to school with him & didn`t even know it until a few weeks ago. He was a Mazda mechanic for years at a dealership where I buy my parts from. I wish I would have had all of these sources years ago!!! It really stinks when you are into something as enjoyable as these cars are but you have no one local to take them to when they break or you want to buy some performance upgrade or something. You kinda have to be networked to know about them. I am a loner in a sense then. All of the performance guys around here I found out about through the web. Oh well. Better late than never I guess.
"BTW...I'm jealous. You have DJSeven AND Landers at Rotary Ressurection in your area. The closest shop familiar with the FD to me was about 10 hours and two States away."
Wasn`t always this way. Years ago when I was really into RX7s & performance, the closest I had was Pettit in Florida. I bought my first engine from Rotor Reliability & Racing in CA mid 94. Wished I would have known of Pettit then but he may have just been getting started. The Pettit motor ( Bought in late 96 ) I have is still in my 83 & runs very well at 55K miles or so. Top end isn`t what it used to be (Neither is my nerve to get the car there either or want to die doing 170 MPH ) but at least it ISN`T drinking a quart of oil every 200 miles like the other engine did near the end before I got fed up with it. I will say that Pettit clearly did build me a better motor. If I ever need another block built, I may let DJSeven do it. He is about 15 minutes from me unlike the others that you state are 10 hours away. I have driven to FL a few times & stopped in to see Cams` operation while I was at the beach in Ft. Lauderdale ( Think he has moved since ) & it was a 10 hour haul for me too. I have one other source here for rotary repair also. Went to school with him & didn`t even know it until a few weeks ago. He was a Mazda mechanic for years at a dealership where I buy my parts from. I wish I would have had all of these sources years ago!!! It really stinks when you are into something as enjoyable as these cars are but you have no one local to take them to when they break or you want to buy some performance upgrade or something. You kinda have to be networked to know about them. I am a loner in a sense then. All of the performance guys around here I found out about through the web. Oh well. Better late than never I guess.
06-08-2009, 10:25 PM
#43
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Join Date: Apr 2009
Location: Knoxville TN
Posts: 98
Well the injectors were sent out to today to be cleaned. Did some more work on the rats nest that is on my bench. Checking solenoids for any funkiness that they may be doing unbeknownst to me. Don`t like funkiness in my solenoids. Seen many a grown man brought to their knees by a solenoid.
Having too much fun here.
Jim, I`ll address this one to you. When you had the ride apart, did you go thru the solenoid rack & check all of those solenoids? If you did, did you check them hot also? I am trying to figure out if I want to do that or not. I can`t remember if you mentioned it or not in one of the other conversations we may have had. I am checking everything for pressure or vacuum leaks too. Oh, got my AST in Saturday. It sure will be nice to have that in there so I don`t have to worry about the plastic one grenading at some point later down the road.
About time to throw some burgers on the grill then back to reading. Seem to be doing alot of that lately & it is ALWAYS on 3rd gen RX7s for some reason. Hmmmm...need to work on that.
Having too much fun here.
Jim, I`ll address this one to you. When you had the ride apart, did you go thru the solenoid rack & check all of those solenoids? If you did, did you check them hot also? I am trying to figure out if I want to do that or not. I can`t remember if you mentioned it or not in one of the other conversations we may have had. I am checking everything for pressure or vacuum leaks too. Oh, got my AST in Saturday. It sure will be nice to have that in there so I don`t have to worry about the plastic one grenading at some point later down the road.
About time to throw some burgers on the grill then back to reading. Seem to be doing alot of that lately & it is ALWAYS on 3rd gen RX7s for some reason. Hmmmm...need to work on that.
06-09-2009, 07:50 AM
#44
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Join Date: Dec 2003
Location: Mid-West
Posts: 791
I confess I did not check my solenoids when they were out. I probably should have though. Like you, I was rebuilding for a coolant seal and my boost pattern had been golden. Besides, about half of them were deleted with emissions....so I didn't bother.
So far I haven't had any problems but looking back...........well I can't see that it would hurt to verify yours aren't leaking, sticking etc.
So far I haven't had any problems but looking back...........well I can't see that it would hurt to verify yours aren't leaking, sticking etc.
06-15-2009, 09:04 PM
#45
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Well, inquisitive me decided I would tear down my engine over the course of the last few days. Internals actually looked pretty good. I was expecting much worse. Both rotor housings had some wear that extended about a 16th of an inch into the housing on the exhaust stroke. DJSeven told me that that was normal for most engines. He also looked at my side housings & was amazed at how smooth they were. He thought that it might have been possible that the motor may have been replaced at some point in the cars life. I think I may put the parts up for sale soon. I am sure glad that the apex seals didn`t break or anything. Would have destroyed alot of the internals. As it was, some of the front apex seal springs were lacking in springiness so I think that is where alot of my compression loss was coming from. Never did quite find the area where that coolant seal might have been leaking. Not going to worry about it now.
Spent most of the day figuring out what parts I need to order, makin` a list, checkin` it twice kinda thing.
Guess I will get the ball rolling in that department this week. Trying to stay focused on this project but there is so much to do. Did however manage to get the yard mowed yesterday!
Spent most of the day figuring out what parts I need to order, makin` a list, checkin` it twice kinda thing.
Guess I will get the ball rolling in that department this week. Trying to stay focused on this project but there is so much to do. Did however manage to get the yard mowed yesterday!
06-15-2009, 09:12 PM
#46
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Here is a shot of the rotors after I finished cleanin `em up. Sure was a lot of carbon buildup on them. I need to find some kind of spray on cleaner that would get rid of that stuff. Sure would make life easier. "Spray `n wash" off would be ideal!
06-16-2009, 05:41 AM
#47
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Join Date: Dec 2003
Location: Mid-West
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Good to hear on your irons. Will you be reusing the housings then?
My seal failure was pretty obvious, but I've heard that some are a little harder to see. ??
As for rotors, I used EASY-OFF oven cleaner and a nylon scrub pad. Then a hot utility sink for rinsing and a 1/2 can or so of WD-40 to get rid of the water. Worked for me. What really sucked was cleaning the seal grooves. That was just frickin' tedious but the guy who was my "technical advisor" was pretty adamant that those be just as clean.
How do the bearings and bearing surfaces look?
My seal failure was pretty obvious, but I've heard that some are a little harder to see. ??
As for rotors, I used EASY-OFF oven cleaner and a nylon scrub pad. Then a hot utility sink for rinsing and a 1/2 can or so of WD-40 to get rid of the water. Worked for me. What really sucked was cleaning the seal grooves. That was just frickin' tedious but the guy who was my "technical advisor" was pretty adamant that those be just as clean.
How do the bearings and bearing surfaces look?
06-16-2009, 07:05 AM
#48
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The bearing surfaces looked real good. As you can see in the previous post, the E shaft didn`t show any of the signs of lack of oil lubrication. Neither did the bearings in the rotors. Didn`t see any worn down areas ( copper coloring ) in the bearings.
Forgot to mention, tried the heat on the old vacuum hose connections technique & it REALLY worked well! I have one of those little micro-torches ( Crack pipe lighter ) here that I used. Turned the flame on low & put it on the hose. A little too much will give ya smoke but seeing as how I wasn`t going to re-use the hose anyway, no problem. A heat gun probably would have worked better if one wanted to use the old hose. Those things just popped right off with a little twist after they were warm. Didn`t break a single solenoid nozzle. That made me VERY happy!
Won`t be re-using any of the internals. Have a reman motor sitting here. I thought about keeping all of the stuff but think I am going with selling off the components instead. DJSeven told me that even the rotor housings were completely reusable as they were. So, the housings, irons, rotors + counterweight & E-shaft will be posted up soon for someone who wants to rebuild their motor or needs parts for a grenaded engine.
Was informed also that sometimes the coolant seals will leak but it IS really hard to locate where the leak is at. DJSeven told me of all of the motors he has rebuilt, there have been a few that leaked prior to his rebuild & were really difficult to locate the exact spot where the coolant was coming in to the combustion chamber. Heck. It is interesting that the seals really aren`t anything more than a big rubber band.
Included a side shot of the rotors for you to look at the bearing conditions. Still need to clean the apex seal grooves & side seal positions. I will pick up a can of oven cleaner while I am out today & give it a whirl.
Forgot to mention, tried the heat on the old vacuum hose connections technique & it REALLY worked well! I have one of those little micro-torches ( Crack pipe lighter
Won`t be re-using any of the internals. Have a reman motor sitting here. I thought about keeping all of the stuff but think I am going with selling off the components instead. DJSeven told me that even the rotor housings were completely reusable as they were. So, the housings, irons, rotors + counterweight & E-shaft will be posted up soon for someone who wants to rebuild their motor or needs parts for a grenaded engine.
Was informed also that sometimes the coolant seals will leak but it IS really hard to locate where the leak is at. DJSeven told me of all of the motors he has rebuilt, there have been a few that leaked prior to his rebuild & were really difficult to locate the exact spot where the coolant was coming in to the combustion chamber. Heck. It is interesting that the seals really aren`t anything more than a big rubber band.
Included a side shot of the rotors for you to look at the bearing conditions. Still need to clean the apex seal grooves & side seal positions. I will pick up a can of oven cleaner while I am out today & give it a whirl.
06-17-2009, 10:17 AM
#49
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Join Date: Apr 2009
Location: Knoxville TN
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Called Ray Crowe at Malloy Mazda yesterday for the FC fan switch sensor. Friendly fellow & nice guy! He had what I needed in stock & sold it to me cheap. Even shipped the part to me for free! Now THAT`S what I call GREAT service! I will definitely be using him again in the near future.