Can stop your turbine wheel from spinning?
10-07-04, 04:16 PM
#1
Can stop your turbine wheel from spinning?
Previous story my car will not boost right. Lag machine from hell.
I removed my oil restrictor and bought new silcone couplings besides all the previous trouble shooting.
I took the air breather out and held the turbine with my hand. Then I throttle the gas. It would not spin it. I thought that you would feel more pressure? Is this normal.
This was my last attempt before I store it.
Finally can hit about 8psi by 5500rpm though.
I removed my oil restrictor and bought new silcone couplings besides all the previous trouble shooting.
I took the air breather out and held the turbine with my hand. Then I throttle the gas. It would not spin it. I thought that you would feel more pressure? Is this normal.
This was my last attempt before I store it.
Finally can hit about 8psi by 5500rpm though.
10-07-04, 07:06 PM
#4
Sounds like the turbo is bad, and you are very lucky that it is. It should spin up and eat your hand.
Note: be very careful with your fingers near a turbo compressor (I assume you meant the cool compressor side versus the hot turbine side). Turbos have been known to suck nearby hands into them and eat their fingers. There are some videos of people severely damaging (losing) their fingers by accidentally placing their hands near the turbo compressor inlet. I certainly would not be up for having someone rev an engine while I try to hold the compressor wheel!
Realistically, I am sure you could get away with a little low-RPM compressor holding, but it seems like a very dangerous game to play after seeing the gruesome finger-eating-turbo videos.
-Max
Note: be very careful with your fingers near a turbo compressor (I assume you meant the cool compressor side versus the hot turbine side). Turbos have been known to suck nearby hands into them and eat their fingers. There are some videos of people severely damaging (losing) their fingers by accidentally placing their hands near the turbo compressor inlet. I certainly would not be up for having someone rev an engine while I try to hold the compressor wheel!
Realistically, I am sure you could get away with a little low-RPM compressor holding, but it seems like a very dangerous game to play after seeing the gruesome finger-eating-turbo videos.
-Max
10-07-04, 07:09 PM
#5
If you can spin the compressor easily by hand, it must be one of these two things:
1. Exhaust isn't going through the turbine.
2. Turbine wheel has lost all of its fins, or there is a lot of room between the turbine blades and the turbine housing.
-Max
1. Exhaust isn't going through the turbine.
2. Turbine wheel has lost all of its fins, or there is a lot of room between the turbine blades and the turbine housing.
-Max
10-07-04, 07:13 PM
#6
Originally Posted by maxcooper
Sounds like the turbo is bad, and you are very lucky that it is. It should spin up and eat your hand.
Note: be very careful with your fingers near a turbo compressor (I assume you meant the cool compressor side versus the hot turbine side). Turbos have been known to suck nearby hands into them and eat their fingers. There are some videos of people severely damaging (losing) their fingers by accidentally placing their hands near the turbo compressor inlet. I certainly would not be up for having someone rev an engine while I try to hold the compressor wheel!
Realistically, I am sure you could get away with a little low-RPM compressor holding, but it seems like a very dangerous game to play after seeing the gruesome finger-eating-turbo videos.
-Max
Note: be very careful with your fingers near a turbo compressor (I assume you meant the cool compressor side versus the hot turbine side). Turbos have been known to suck nearby hands into them and eat their fingers. There are some videos of people severely damaging (losing) their fingers by accidentally placing their hands near the turbo compressor inlet. I certainly would not be up for having someone rev an engine while I try to hold the compressor wheel!
Realistically, I am sure you could get away with a little low-RPM compressor holding, but it seems like a very dangerous game to play after seeing the gruesome finger-eating-turbo videos.
-Max
It was the cold side and on the nut. I was reving the engine from the cable.
Thanks for the warning.
10-07-04, 07:17 PM
#7
Originally Posted by maxcooper
If you can spin the compressor easily by hand, it must be one of these two things:
1. Exhaust isn't going through the turbine.
2. Turbine wheel has lost all of its fins, or there is a lot of room between the turbine blades and the turbine housing.
-Max
1. Exhaust isn't going through the turbine.
2. Turbine wheel has lost all of its fins, or there is a lot of room between the turbine blades and the turbine housing.
-Max
Fins were there since I took the turbo out already to see if the Turbo was FUBAR.
No room between blades and housing.
I'm going to remove it again next year and bring it again to another turbo shop
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10-07-04, 09:35 PM
#11
Originally Posted by RETed
Yeow!
I didn't you were crazy enough to try and stop the wheel from spinning with your hand!
-Ted
I didn't you were crazy enough to try and stop the wheel from spinning with your hand!
-Ted
Here I am asking about it, I hopefully nobody went out to try this!
10-07-04, 09:48 PM
#12
Is there some way for the exhaust to not go through the turbine? Wastgate stuck wide open? Crazy manifold design that dumps all the exhaust before it goes through the turbo?
-Max
-Max
10-07-04, 10:26 PM
#13
After seeing your car on the dyno that day, and with all these updates you've been providing, I really think your problem Is In your Wastegate. As for wanting to stop your turbine wheel from spinning by hand? You know what I'm going to say. Don't $*@^en do It!
10-08-04, 02:04 AM
#15
Lives on the Forum
Originally Posted by IAN
So I guess this means I should have not been able to stop it by hand then!
Here I am asking about it, I hopefully nobody went out to try this!
Here I am asking about it, I hopefully nobody went out to try this!
-Ted
10-08-04, 11:28 AM
#16
GrapefruitRacing?
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Originally Posted by IAN
? LOL. He must be talking about someone else
Originally Posted by RETed
I can't confirm that, but you should've lost some skin at the very least!
-Ted
-Ted
Frank
10-08-04, 11:51 AM
#17
Freedoms worth a buck o'5
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I tried once to stop the shaft by hand with the t04e, it wasn't spinning terribly fast and I wasn't really worried about cutting my fingers either, but at idle, I could not stop the shaft from spinning, every exhaust pulse was strong enough to break my grip on the compressor nut, your turbo is pooched..max
10-08-04, 12:20 PM
#18
Originally Posted by RXciting
LOL no that's what he said after me and a friend that just bough an RX-7 showed him a pic of you and him going through a turn side by side at Shannonville
...sorry off topic.
10-08-04, 04:48 PM
#19
GrapefruitRacing?
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lol yes you've already told us that or you told azad, or someone.. can't remember .. i just remember hearing it withing the last couple of days.. still the guy said 2nd Gen RX-7's are fast and he owns 2 Vipers just says something about us RX-7 guys 
BTW that's still a nice pic, lol your gonna have to take pics of my car as i push it around the track next season cause my turbo setup went boom
Frank
BTW that's still a nice pic, lol your gonna have to take pics of my car as i push it around the track next season cause my turbo setup went boom
Frank
10-08-04, 05:39 PM
#20
Rotary Freak
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I've been able to hold my compressor since day one on a cold startup and idle under 1000rpm. I've never tried to hold it when it's warmed up, spinning too fast to risk a finger
10-08-04, 07:57 PM
#21
Originally Posted by Maxthe7man
I tried once to stop the shaft by hand with the t04e, it wasn't spinning terribly fast and I wasn't really worried about cutting my fingers either, but at idle, I could not stop the shaft from spinning, every exhaust pulse was strong enough to break my grip on the compressor nut, your turbo is pooched..max
Well out it goes and to another turbo shop. Agian!
10-08-04, 07:59 PM
#22
Originally Posted by eViLRotor
I took that pic, and trust me, that Viper was kicking Ian's ***. 9 Seconds faster per lap. That pic is very misleading due to the telephoto lens I used, since it compresses the distance. Ian was just getting out of the way....
...sorry off topic.
...sorry off topic.
Well if this is the same guy I think it is I've bumped into him years in a row.
Yes I was getting out of his way. He was following me for a while. Then I tried to follow him
Funny thing is my brother is holding a camera. I don't remember watching the video!
Did you notice my expression on my face. Pure grins
10-08-04, 08:26 PM
#23
Lives on the Forum
We tried to hold a Turbonetics T70 on a built 13B-REW, but as soon as the engine caught there was no way we could hold onto the compressor wheel.
Not the smartest things I've done, but we were bored in the shop...
-Ted
Not the smartest things I've done, but we were bored in the shop...
-Ted
10-08-04, 08:54 PM
#24
I'm with stupid -----^
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Hmm.. at an 900rpm idle I can grab the centre bolt of my TD07-25G and keep it from spinning... I doubt that using this method to decide if the turbo is in good shape or not is very accurate at all.. unless of course you are willing to state that there is something wrong with my turbo as well..
Mind you, I haven't tried to see if I could keep a hold of the bolt while revving the motor.. I value my fingers too much..
Mind you, I haven't tried to see if I could keep a hold of the bolt while revving the motor.. I value my fingers too much..
10-08-04, 09:03 PM
#25
Interesting. Seems to me I was not the only guy to try this.
Would there be something wrong with the motor? It compression tested ok.
Once stopped by hand at 1000rpm it took a second to start spinning again. I could very easily hold it reving it.
But after reading about chewed fingers I can't say I will try this again.
Varied outlooks on this to.... (Good or bad turbo diagnostic)
Would there be something wrong with the motor? It compression tested ok.
Once stopped by hand at 1000rpm it took a second to start spinning again. I could very easily hold it reving it.
But after reading about chewed fingers I can't say I will try this again.
Varied outlooks on this to.... (Good or bad turbo diagnostic)