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an RX8er's rebuild thread

Old Jun 5, 2012 | 08:55 PM
  #951  
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as far as the vacuum reading they are between 13-14psi (low right?)

I do have to say that the car did start twice after it was hot, that hasnt happened yet
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Old Jun 6, 2012 | 05:02 AM
  #952  
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Originally Posted by houstonrx8er
so I had to fight with the tester a little bit but when I removed the "check valve" in the line I finally got it to read.......and drumroll please..... all 3 blips of both rotors where over 35psi. That is a good thing looking at 9k's post but I cant get the overall "115" #. Any advice?
Originally Posted by houstonrx8er
as far as the vacuum reading they are between 13-14psi (low right?)

I do have to say that the car did start twice after it was hot, that hasnt happened yet
35 PSI????

vacuum should be 16 or higher isn't it?

what da heck?
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Old Jun 6, 2012 | 07:09 AM
  #953  
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no, thats the compression test results......vacuum was was 14
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Old Jun 6, 2012 | 09:09 AM
  #954  
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Originally Posted by houstonrx8er
I know dude I didnt listen....crap

next time I am going to draw my own blood and put it in a mold of a rotor and 1-up all you SOB's. solid blood rotor....its got to be at least 50hp

Dude... did you ever see the guy who dose a mold of his face with his own frozen blood every five years....
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Old Jun 6, 2012 | 09:25 AM
  #955  
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13-14 vacuum is pretty low bro.
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Old Jun 6, 2012 | 09:39 AM
  #956  
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Old Jun 6, 2012 | 09:59 AM
  #957  
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13-14 vacuum is pretty low. What is the vacuum at 2K rpms without a load on it?
I bet its higher.
all rotor faces with about equal compression is good---- I would drive the hell of out it for a little while. Then look at your sparkplugs and get an oil analysis? See if you have a lot of wear metal or a lot of fuel in the oil? Just an idea. I wouldnt tear it down--yet.
isnt compression using a "regular" compression gauge around 80-100psi?

Last edited by olddragger; Jun 6, 2012 at 10:12 AM.
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Old Jun 6, 2012 | 10:32 AM
  #958  
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Originally Posted by olddragger
13-14 vacuum is pretty low. What is the vacuum at 2K rpms without a load on it?
I bet its higher.
all rotor faces with about equal compression is good---- I would drive the hell of out it for a little while. Then look at your sparkplugs and get an oil analysis? See if you have a lot of wear metal or a lot of fuel in the oil? Just an idea. I wouldnt tear it down--yet.
isnt compression using a "regular" compression gauge around 80-100psi?
it was over 20 if I remember correctly, I will check it again when I get home.

looked at plugs last night while I did compression test, look as I would expect them to look, not wet or white or anything like that

Originally Posted by Charles R. Hill
The factory intake manifold vacuum spec (assuming sea level) is 17-20 in./hg.
15-16 is low but not necessarily alarming.

35 PSI for compression and the engine would not even run.
thats what I though but I followed the proceedure 9k posted (RR I beleive) and everything matches but I couldnt get the tester to read in the 3-digit range

I do have to say the car started right up this morning...best it has so far.
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Old Jun 6, 2012 | 10:40 AM
  #959  
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Well that is a good sign
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Old Jun 6, 2012 | 10:42 AM
  #960  
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the concensus seems to be to keep driving it....

wonder if after driving home today it will "Hot" start????
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Old Jun 6, 2012 | 10:43 AM
  #961  
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Originally Posted by nycgps
most of them would bitch at you and say use Groopy. you know it's true RG !
I refuse to buy anything from anyone named Goopy.
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Old Jun 6, 2012 | 10:43 AM
  #962  
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I drove it today

and it hot started today when I got here.
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Old Jun 6, 2012 | 10:45 AM
  #963  
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TX

Originally Posted by rotarygod
i refuse to buy anything from anyone named goopy.

+1.
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Old Jun 6, 2012 | 10:47 AM
  #964  
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I also don't use claims like this as validation for a product:

"NO we do not have data or photos showing results after 20,000 miles.
However, we have had very high HP racers running our refurbished housings with our Goopy Performance Apex Seals for a full race season (40-50+ passes) while maintaining very high compression and no housing damage
of any kind"

What that says is that they know for a fact that their product can live between 10-12.5 miles at full throttle with 40-50 breaks mixed in. Being proven on a 1/4 mile drag strip is meaningless to a street car. Being proven at the 24 hours of Lemans however is a bit different!
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Old Jun 6, 2012 | 10:48 AM
  #965  
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Originally Posted by houstonrx8er
I drove it today

and it hot started today when I got here.
Well there ya go...
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Old Jun 6, 2012 | 10:53 AM
  #966  
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if the vacuum between idle and 2K prms changes from 13-14 to 20 and above--then that is weak sealing at idle---unless its a ported engine?
what that would mean to me --continue to drive the heck out of it for a while. I bet it is going to get better. the bad ju-ju will go away
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Old Jun 6, 2012 | 10:55 AM
  #967  
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Originally Posted by olddragger
if the vacuum between idle and 2K prms changes from 13-14 to 20 and above--then that is weak sealing at idle---unless its a ported engine?
what that would mean to me --continue to drive the heck out of it for a while. I bet it is going to get better. the bad ju-ju will go away
I am ported and it is official...I am going to drive the **** out of it
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Old Jun 6, 2012 | 12:28 PM
  #968  
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phew i was about to say mmmmmm wwaaaat 35?¿?¿?¿?¿

OK. well it seems that its working fine now. that's a good sign.

give it more break in time.
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Old Jun 6, 2012 | 12:40 PM
  #969  
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Originally Posted by nycgps
phew i was about to say mmmmmm wwaaaat 35?¿?¿?¿?¿

OK. well it seems that its working fine now. that's a good sign.

give it more break in time.
I think alot of this is caused by my super premix gas from that first tank
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Old Jun 6, 2012 | 01:09 PM
  #970  
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Originally Posted by rotarygod
I also don't use claims like this as validation for a product:

"NO we do not have data or photos showing results after 20,000 miles.
However, we have had very high HP racers running our refurbished housings with our Goopy Performance Apex Seals for a full race season (40-50+ passes) while maintaining very high compression and no ho
of any kind"

What that says is that they know for a fact that their product can live between 10-12.5 miles at full throttle with 40-50 breaks mixed in. Being proven on a 1/4 mile drag strip is meaningless to a street car. Being proven at the 24 hours of Lemans however is a bit different!
that's also the reason why i bought new housing instead of doing that resurfacing thinnnngggg

i rather have my housing rechrome.
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Old Jun 6, 2012 | 01:16 PM
  #971  
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Originally Posted by houstonrx8er
I am ported and it is official...I am going to drive the **** out of it
DO IT.......
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Old Jun 6, 2012 | 04:29 PM
  #972  
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well on my drive home today I pretty much confirmed that my oil temp guage is jacked....or the cable routing is....and probably the latter

I got home and the RB guage said 240 so I put a high power fan in front of my other cooler until the driveside oil cooler fan kicked off (190 I beleive) and the OT on my RB pod was still 230 even after a few minutes....after thumping the cable with a flash light I was able to get the guage down 20deg......when it doubt blame opperator error
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Old Jun 6, 2012 | 06:40 PM
  #973  
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240 ...

Is RB gauges mechanical or it's thru sensor ?

I love my Defi set never gave me any issues/errors. but sadly I killed the control unit by mistake. ****.
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Old Jun 6, 2012 | 06:59 PM
  #974  
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its mechanical. I thought that is what I wanted but I have learned now. just not worth replacing.
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Old Jun 6, 2012 | 06:59 PM
  #975  
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my coolant temps never saw above 195 which kind of confirms that messed up OT as well
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