'93 rx7 help
02-16-06, 12:12 PM
#1
spank my wankel, just try
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'93 rx7 help
sup guys....I just got myself a '93 rx7....I have a few questions.....
during the warmup process (where it revs to 3grand), the car puts out some blueish white smoke for a little bit, is this normal? Also, when I'm driving around it seems as though I smell a tiny bit of oil being burned....
several people have told me rotaries burn oil, and the smoke is normal...is this true or not?
Also, sometimes when I hold the clutch down to the floor to long, it sticks to the floor....(I've heard it could be the master/slave cylinder? how much is that to replace, and how difficult?)
And another issue, is that it only boosts 7psi:
the boost is about 7psi, 8psi on a cold cold day, he said he restricted the boost due to the exhaust and stuff would make it overboost with the addition of the exhaust & stuff. But the problem is, how did he restrict boost with no boost controller?? with the supercars engine management??
the guy before me told me it had:
new springs / seals (3,000 miles on the engine) - car originally has 70,200 miles on it (taken from digital readout)
3" downpipe, midpipe & 3" tanabe exhaust /w no cats
also the car has no smog pump connected, because I bought it from florida (no emissions there)
full air intake system
stock blow off valves
stock twin turbo's
PFsupercars engine management (untuned currently, he told me I could go get it tuned @ a dyno shop for 14psi or so...)
any help from you guys is appreciated!
during the warmup process (where it revs to 3grand), the car puts out some blueish white smoke for a little bit, is this normal? Also, when I'm driving around it seems as though I smell a tiny bit of oil being burned....
several people have told me rotaries burn oil, and the smoke is normal...is this true or not?
Also, sometimes when I hold the clutch down to the floor to long, it sticks to the floor....(I've heard it could be the master/slave cylinder? how much is that to replace, and how difficult?)
And another issue, is that it only boosts 7psi:
the boost is about 7psi, 8psi on a cold cold day, he said he restricted the boost due to the exhaust and stuff would make it overboost with the addition of the exhaust & stuff. But the problem is, how did he restrict boost with no boost controller?? with the supercars engine management??
the guy before me told me it had:
new springs / seals (3,000 miles on the engine) - car originally has 70,200 miles on it (taken from digital readout)
3" downpipe, midpipe & 3" tanabe exhaust /w no cats
also the car has no smog pump connected, because I bought it from florida (no emissions there)
full air intake system
stock blow off valves
stock twin turbo's
PFsupercars engine management (untuned currently, he told me I could go get it tuned @ a dyno shop for 14psi or so...)
any help from you guys is appreciated!
Last edited by TrevorC; 02-16-06 at 12:21 PM.
02-16-06, 02:02 PM
#2
1. The exhaust smoke is not normal. It is more than likely your stock twins burning oil, that means there on there last leg. Which could also be a couse of why your turbos are only boosting to 7-8 psi. Normal well working seq. turbos boost to 10 psi with a 8 psi transition at 4.5k rpms.
2. Rotarys do burn oil but not enough to send a ploum of smoke out the exhaust.
3. Like I mentioned earlier the turbos should be making 10 psi in good condition. your are way under par. So you secondary turbo could be shot as well, and you are just boosting on the primary alone and that is very hard on it.
4. If you do not have a boost controller and you have a full exhaust like you mentioned your engine is in mortal danger. This can lead to boost spikes to couse a lean condition and end the life of the motor that is in the car. But you are not even running with stock boost so you should be safe for now.
5. The motor could have new seals in it but I would of asked for reciepts if the condition of the motor is in ?. It is possible but do a compression test to see how strong the motor acctually is.
6. My advise is to park the car and do some maintnace since it sounlds like that car is in sad shape. These cars need alot of attention and alot of maintnace it is turbo charged and a rotary so they are prone to many things. First change the plugs and Fuel filter. Next test and you more than likely have to replace the turbos. Next check your turbo controll sylinods for proper working order if you are not getting full boost. Also install a electronic boost controller this will save your motor. Then you can get a tune so dont push the car till you have all your maintnace done. so no more boost.
Also the PF computer has 3 settings 10psi 12psi and 14-15psi but you still need the boost controller to hit the boost level. I would sell it and get a PFC they are more tuner friendly.
2. Rotarys do burn oil but not enough to send a ploum of smoke out the exhaust.
3. Like I mentioned earlier the turbos should be making 10 psi in good condition. your are way under par. So you secondary turbo could be shot as well, and you are just boosting on the primary alone and that is very hard on it.
4. If you do not have a boost controller and you have a full exhaust like you mentioned your engine is in mortal danger. This can lead to boost spikes to couse a lean condition and end the life of the motor that is in the car. But you are not even running with stock boost so you should be safe for now.
5. The motor could have new seals in it but I would of asked for reciepts if the condition of the motor is in ?. It is possible but do a compression test to see how strong the motor acctually is.
6. My advise is to park the car and do some maintnace since it sounlds like that car is in sad shape. These cars need alot of attention and alot of maintnace it is turbo charged and a rotary so they are prone to many things. First change the plugs and Fuel filter. Next test and you more than likely have to replace the turbos. Next check your turbo controll sylinods for proper working order if you are not getting full boost. Also install a electronic boost controller this will save your motor. Then you can get a tune so dont push the car till you have all your maintnace done. so no more boost.
Also the PF computer has 3 settings 10psi 12psi and 14-15psi but you still need the boost controller to hit the boost level. I would sell it and get a PFC they are more tuner friendly.
02-16-06, 02:54 PM
#3
spank my wankel, just try
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Originally Posted by Rocking Rotary
1. The exhaust smoke is not normal. It is more than likely your stock twins burning oil, that means there on there last leg. Which could also be a couse of why your turbos are only boosting to 7-8 psi. Normal well working seq. turbos boost to 10 psi with a 8 psi transition at 4.5k rpms.
2. Rotarys do burn oil but not enough to send a ploum of smoke out the exhaust.
3. Like I mentioned earlier the turbos should be making 10 psi in good condition. your are way under par. So you secondary turbo could be shot as well, and you are just boosting on the primary alone and that is very hard on it.
4. If you do not have a boost controller and you have a full exhaust like you mentioned your engine is in mortal danger. This can lead to boost spikes to couse a lean condition and end the life of the motor that is in the car. But you are not even running with stock boost so you should be safe for now.
5. The motor could have new seals in it but I would of asked for reciepts if the condition of the motor is in ?. It is possible but do a compression test to see how strong the motor acctually is.
6. My advise is to park the car and do some maintnace since it sounlds like that car is in sad shape. These cars need alot of attention and alot of maintnace it is turbo charged and a rotary so they are prone to many things. First change the plugs and Fuel filter. Next test and you more than likely have to replace the turbos. Next check your turbo controll sylinods for proper working order if you are not getting full boost. Also install a electronic boost controller this will save your motor. Then you can get a tune so dont push the car till you have all your maintnace done. so no more boost.
Also the PF computer has 3 settings 10psi 12psi and 14-15psi but you still need the boost controller to hit the boost level. I would sell it and get a PFC they are more tuner friendly.
2. Rotarys do burn oil but not enough to send a ploum of smoke out the exhaust.
3. Like I mentioned earlier the turbos should be making 10 psi in good condition. your are way under par. So you secondary turbo could be shot as well, and you are just boosting on the primary alone and that is very hard on it.
4. If you do not have a boost controller and you have a full exhaust like you mentioned your engine is in mortal danger. This can lead to boost spikes to couse a lean condition and end the life of the motor that is in the car. But you are not even running with stock boost so you should be safe for now.
5. The motor could have new seals in it but I would of asked for reciepts if the condition of the motor is in ?. It is possible but do a compression test to see how strong the motor acctually is.
6. My advise is to park the car and do some maintnace since it sounlds like that car is in sad shape. These cars need alot of attention and alot of maintnace it is turbo charged and a rotary so they are prone to many things. First change the plugs and Fuel filter. Next test and you more than likely have to replace the turbos. Next check your turbo controll sylinods for proper working order if you are not getting full boost. Also install a electronic boost controller this will save your motor. Then you can get a tune so dont push the car till you have all your maintnace done. so no more boost.
Also the PF computer has 3 settings 10psi 12psi and 14-15psi but you still need the boost controller to hit the boost level. I would sell it and get a PFC they are more tuner friendly.
Yes, the motor is pretty dirty....I ust ordered some new K&N filters for it because they were so dirty that I didn't even want to attempt to recharge them with arecharger kit. (should be here tomorrow).
Also, it is possible that I might have a boost leak maybe? What should I look for when looking for boost leaks? The guy also said he replaced all the hoses with silicone to prevent cracking of the stock vacuum lines...
Also, how do I check to see if the turbo control solenoids are working properly?
And also where is the fuel filter located on this car? Near the gas tank infront of it? I'm assuming? Thats where my mustang fuel filter was.....
02-16-06, 03:05 PM
#4
The intake really isn't going to help any thing.
You would be reading zero on the boost gauge if you had a leak, so I doubt thats your problem. But for fun you would have to first check your black rubber hoses for rippes or cracks. If you didn't find anything you will have to rev the engine and you will hear a wistel, and thats your leak.
You should really invest in a factory service manual if you plan on working on this car your self. To check the controll sylinods for vac you need a vaccume pump. and a ohm meter for the electircal ones. You will have to omh out some and when you had vac. they will click to change over.
RX7's fuel filters are located on the rear sub fram right above the muffler real fun location.
With the list of problems you have and your info on the third gen. you may want to get another mustang. These cars are very complicated. Mustangs and camaros are easy to work on in comparesion.
You would be reading zero on the boost gauge if you had a leak, so I doubt thats your problem. But for fun you would have to first check your black rubber hoses for rippes or cracks. If you didn't find anything you will have to rev the engine and you will hear a wistel, and thats your leak.
You should really invest in a factory service manual if you plan on working on this car your self. To check the controll sylinods for vac you need a vaccume pump. and a ohm meter for the electircal ones. You will have to omh out some and when you had vac. they will click to change over.
RX7's fuel filters are located on the rear sub fram right above the muffler real fun location.
With the list of problems you have and your info on the third gen. you may want to get another mustang. These cars are very complicated. Mustangs and camaros are easy to work on in comparesion.
02-16-06, 08:00 PM
#5
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Trevor... the guy said he removed the restictor in the line which makes it boost 10psi(not sure, but was something like that) since he didn't have a boost controller connected and it would overboost otherwise
I believe i have seen a diagram of where this is and what it does
Just put your MBC on
Also, maybe there is a pressure tested to check for leaks like my car
Trevor forgot to mention there was a few mechanics that took a look at it(one knew a good amount about the car because his brother has one and I guess he works on them??) The guy said that the car sounded healthy.
After running fuel injector cleaner 1 full tank and then 1 without and then one with the cleaner... the smoking stopped.... dont know if it is still doing it tho... let us know trevor
The car pulls HARD at only 7psi!
The guy also said the pfs is untuned and with it tuned you should be able to boost 14psi?? I'm sure somebody on here knows
oh yeah.. the owner said he had a shop put in bigger springs or something like that which lubricates the rotor more???... I dunno it was something like that... I know nothing of rotories.... lol
I believe i have seen a diagram of where this is and what it does
Just put your MBC on
Also, maybe there is a pressure tested to check for leaks like my car
Trevor forgot to mention there was a few mechanics that took a look at it(one knew a good amount about the car because his brother has one and I guess he works on them??) The guy said that the car sounded healthy.
After running fuel injector cleaner 1 full tank and then 1 without and then one with the cleaner... the smoking stopped.... dont know if it is still doing it tho... let us know trevor
The car pulls HARD at only 7psi!
The guy also said the pfs is untuned and with it tuned you should be able to boost 14psi?? I'm sure somebody on here knows
oh yeah.. the owner said he had a shop put in bigger springs or something like that which lubricates the rotor more???... I dunno it was something like that... I know nothing of rotories.... lol
02-18-06, 12:17 PM
#7
spank my wankel, just try
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I found out why the car is only boosting 7psi right now....I feel alot better.
The guy didn't want to buy a boost controller for the car, so when he put the exhaust and stuff on the car he said it causes it to overboost.....
well he said in the *blue line (he replaced allthe hoses with silicone lines)* inside line off the actuator, he took the little jet pill out that mazda used to control the boost from the factory because he said it was too small and could make the car overboost due 2 the exhaust, so he took it out all together, thats why its only boosting 7psi right now.
=) wooo, I feel better.
The guy didn't want to buy a boost controller for the car, so when he put the exhaust and stuff on the car he said it causes it to overboost.....
well he said in the *blue line (he replaced allthe hoses with silicone lines)* inside line off the actuator, he took the little jet pill out that mazda used to control the boost from the factory because he said it was too small and could make the car overboost due 2 the exhaust, so he took it out all together, thats why its only boosting 7psi right now.
=) wooo, I feel better.
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02-21-06, 03:48 PM
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spank my wankel, just try
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Also, the guy said the reason the car smokes blueish at startup and a little at idle is because he put one of these in there to allow constant flow to main shaft? (his friend reuilt the car, they have a rotary shop in the Opa Locka, FL area...(where I picked the car up from and drove home)
They also had a turbo rotary truck sitting outside, and a few other swapped vehicles that rotary engines didn't belong in, lol. It was cool though, he had a rotary thing welded onto the front of the turbo rotary truck. (I guess thats something rotary heads do), the guy also has about 4 rx7's in his driveway, so I think the car is in pretty decent shape as far as maintenance and he isn't lying to me.
here is the link to the thing that supplies constant oil flow to he "eccesntric shaft" or smething, lmfao. (I don't know anything about rotary's)
http://www.atkinsrotary.com/store/cu...cat=500&page=1
They also had a turbo rotary truck sitting outside, and a few other swapped vehicles that rotary engines didn't belong in, lol. It was cool though, he had a rotary thing welded onto the front of the turbo rotary truck. (I guess thats something rotary heads do), the guy also has about 4 rx7's in his driveway, so I think the car is in pretty decent shape as far as maintenance and he isn't lying to me.
here is the link to the thing that supplies constant oil flow to he "eccesntric shaft" or smething, lmfao. (I don't know anything about rotary's)
http://www.atkinsrotary.com/store/cu...cat=500&page=1
Last edited by TrevorC; 02-21-06 at 03:54 PM.
