glowing turbo?!!?
12-17-02 | 09:15 PM
#1
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Joined: Jul 2001
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From: Southwest Missouri
glowing turbo?!!?
well i was drivin, and it felt like my second turbo was struggling or somethin. just not makin the normal boost. so i pull over, take a look, and its glowing bright orange. im like wtf, so i drive home without boosting again.
whats wrong with my car? i have a downpipe/gutted cat, pettit AST, radiator...and new hoses all around.
whats wrong with my car? i have a downpipe/gutted cat, pettit AST, radiator...and new hoses all around.
12-17-02 | 09:22 PM
#4
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From: Southwest Missouri
sounds the same.....maybe a little deeper. i was getting paranoid about just about anything that happened. but it was definately not going smooth in the upper rpms. it didnt even feel like it was making hardly any boost. thats what made me think of a block, but all i have is the stock exhaust....cats are all gone
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12-17-02 | 09:40 PM
#9
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Joined: Oct 2002
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From: west palm beach, FL
i would definately get the gauge asap...if not a nice one..a cheap one just to troubleshoot....its possible that you were over boosting and getting lean....what color is the suit on your tailpipe?...sometimes this is an indication of lean condition(very crude)....is it dark brown to black ...or light brown to white??
12-17-02 | 09:43 PM
#10
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From: Southwest Missouri
when i start it up, and run it sometimes...usually whiteish. not very long....but its there. my a/f is set to 10.1 and it reads around that usually always when im boosting. i noticed however, when i let off the gas, usually its around 15-17, like no gas pedal at all...but today it was hittin 20, but of course it went back down to 10 when i boost.
12-17-02 | 09:55 PM
#16
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From: Southwest Missouri
the a/f reading is from an apexi turbo timer...it has a/f on it too i guess. but i guess ill just have to wait on a boost gauge. is it safe to run the car like this....im afraid that while checking the boost i may screw something up
12-17-02 | 10:01 PM
#17
Doritos on a toothpick
Joined: Oct 2002
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From: west palm beach, FL
well...i wouldnt trust the apexi turbo timer a\f...just get the boost gauge and run the car in third gauge to see wha the turbos are doing...you should get a positive transition at about 4500-5000 rpm....should go 10psi-8psi-then back up to 10psi....no higher than 11....no lower than 9-10......
12-17-02 | 10:01 PM
#18
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From: Houston Texas
Turbo shouldn't glow
A 'glowing' turbo is not a sign of health, it should never get that hot. I have seen lots of different turbos on lots of different cars to include my own after a hard run and they never got that bad.
If there is no noise, then I would have to agree that either your cooling veins or oil lines are not working correctly and it is just a matter of time before the turbo starts to have some real issues. If the bearings were going out you would also see additional heat. But almost without question, the heat is effecting the boost and baking the oil to the bearings compounding the issue.
First guess is that there is excessive friction slowing the exhaust moving through the turbo, low boost and increasing heat. With the cats out of the picture you are left with no restriction and turbo heat, but only on one turbo, that would normally say that the problem is with that one turbo. Excessive heat can come from tons of different places, bearings, too much fuel in exhaust, too much boost for the turbo rating, no oil or no coolant and many more.
Did you do anything else to the car when you were working on it to pop the cat and put on the DP?
If there is no noise, then I would have to agree that either your cooling veins or oil lines are not working correctly and it is just a matter of time before the turbo starts to have some real issues. If the bearings were going out you would also see additional heat. But almost without question, the heat is effecting the boost and baking the oil to the bearings compounding the issue.
First guess is that there is excessive friction slowing the exhaust moving through the turbo, low boost and increasing heat. With the cats out of the picture you are left with no restriction and turbo heat, but only on one turbo, that would normally say that the problem is with that one turbo. Excessive heat can come from tons of different places, bearings, too much fuel in exhaust, too much boost for the turbo rating, no oil or no coolant and many more.
Did you do anything else to the car when you were working on it to pop the cat and put on the DP?
Last edited by shred; 12-17-02 at 10:06 PM.
12-17-02 | 10:10 PM
#20
Doritos on a toothpick
Joined: Oct 2002
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From: west palm beach, FL
https://www.rx7club.com/forum/showth...=glowing+turbo start searching ...
12-17-02 | 10:14 PM
#21
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Joined: Oct 2002
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From: west palm beach, FL
heres another.... https://www.rx7club.com/forum/showth...=turbo+glowing
12-17-02 | 10:36 PM
#22
don't race, don't need to
Joined: Oct 2002
Posts: 1,292
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From: Tri-Cities, WA
Just an update wrt the last thread... it still glows. Housing still measures 450C when glowing. I still heat cycle the engine (bring it up to 205F and cool it down to 177F with the fan switch) to get rid of the glow. The intake is completely stock, the exhaust is original but for the downpipe, and the O2 sensor has been changed. No difference before and after O2 sensor. Plugs have been changed 500 miles ago, 7's and 9's. Still glowed with all 9's. So really, you guys NEVER have glowing turbo housing (right NEXT to the downpipe), when looking in complete darkness, with the engine having run right at thermostat closed 177F? The turbos were replaced 16K miles ago before I got it.
12-17-02 | 10:41 PM
#23
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From: Southwest Missouri
no one seems to have the boost problem i have. hopefully a boost gauge will help tell me more. this has happened once before, but only for one run and went away. since i have taken my car all over, and even went through about 13 miles thru curves boosting on and off, and then engine was COOL. it seems a lot hotter now when i pop the hood.
also, i am missing my drivers headlight, it just came off last week in a wreck with a deer...could air being shoved into the engine do this? if it doesnt have a way to get out?or maybe theres a coolant line around there that got pinched?
also, i am missing my drivers headlight, it just came off last week in a wreck with a deer...could air being shoved into the engine do this? if it doesnt have a way to get out?or maybe theres a coolant line around there that got pinched?
12-17-02 | 10:46 PM
#24
don't race, don't need to
Joined: Oct 2002
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From: Tri-Cities, WA
No coolant lines near the drivers headlight. I forgot to mention... I boost EXACTLY 10-8-10, in third, from 3000 up to 6500, where I literally chicken out. Cold evenings, I get 12 if I don't watch it, but hold it to 10, and works like it's supposed to.
12-17-02 | 11:57 PM
#25
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From: Southwest Missouri
non sequential......is this hard to setup? it sounds tempting after reading some things....and people say it has full boost by 3500....i didtn really think i was hitting full boost right now till like 3000. is there a huge difference? im searchin, but if anyone has anythin to say...lemme know. oh and also....would runnin them non-seq be faster? seems like it would be the same, but im still searchin