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Stock Bottom & Boost - Reliability List

 
Old 07-16-2011, 06:46 AM
  #201  
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camaro Ls1 2001>>> le1

stock bottom
317 head
Comtec gasket head

TYPE ----- BOOST -- RWHP -- INSTALL -- SINCE -- BROKE?
GT45 ----- 5psi --- 433 --- 120k --- 122k --- N

http://www.youtube.com/watch?v=zQtsR...layer_embedded

Last edited by sahwan; 07-16-2011 at 07:05 AM.
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Old 07-25-2011, 04:00 PM
  #202  
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update to my previous post...

- Type of Forced Induction: STS rear mount
- Boost Amount / RWHP: 5-8psi, 500 rwhp
- Miles on the car when FI installed: 61k


- Miles ran since FI has been on the car: 22k, 4 years

blew a head gasket at ~82,XXX miles. Motor is gonna be coming out soon.
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Old 07-26-2011, 11:05 AM
  #203  
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Too many to list.

1999 owned from new

Vortech supercharged at 3,000 miles. Trashed the 4L60E box immediately, Raptor 700E rebuild.

First blower went at 15,000, impeller oil seal went, required new blower - try getting one shipped back to Vortech for repair from the UK.

Methanol installed to cure detonation. MAP line melted in engine bay, ring seal and piston broken. Engine rebuild.

Second blower went at 45,000 miles. Again the oil seal went. (This is not coincidental - it happened each time just after I took it into a dealership for repair - obviously they revved the nuts off it from cold to see how it sounded - thanks)

Plus the usual belts and brackets.

However - there is no going back
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Old 08-07-2011, 11:07 AM
  #204  
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TYPE ----- BOOST -- RWHP -- INSTALL -- SINCE -- BROKE?
Vortech g trim----- 10 psi --- 514 --- 58k --- 67k --- Yes

Ringland on number 7
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Old 08-08-2011, 03:13 PM
  #205  
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Default 99 Trans Am putting T3/T4 T04E TWIN TURBO'S 50 Trim

Does any one know if these turbo's will work on a Ls2 Trans Am?
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Old 08-08-2011, 07:07 PM
  #206  
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Originally Posted by sthornton99 View Post
Does any one know if these turbo's will work on a Ls2 Trans Am?
You have some researxh to do.
Yes turbos work on almost any motor.
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Old 08-11-2011, 11:04 PM
  #207  
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Stock 6.0 iron T6 91mm 12lbs 698.9 through a 4l80e4l80 93000 installed 93500 running strong.
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Old 08-26-2011, 09:01 PM
  #208  
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camaro Ls1 2001>>> le1

stock bottom
317 head
Comtec gasket head

TYPE ----- BOOST -- RWHP -- INSTALL -- SINCE -- BROKE?
GT45 ----- 5psi ----- 554 ----- 120k ----- 130k ---- N



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Old 08-28-2011, 06:42 PM
  #209  
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15k miles
LS2
22psi
Broke
WG failed to open

http://www.youtube.com/watch?v=ZdaeayLvhGM
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Old 08-31-2011, 01:34 PM
  #210  
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LS6 block w/317s, forged rods/pistons and ARP hardware throughout

PT88 @ 15psi
installed at 62k now at 67k
double roller timing chain failure took out oil pan, front cover and a few valves.

Old combo on 78mm turbo made 650WHP, this PT88 had to have been over 700WHP. Never got it to the dyno.
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Old 09-08-2011, 11:13 PM
  #211  
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Originally Posted by Eagle02 View Post
LS6 block w/317s, forged rods/pistons and ARP hardware throughout

PT88 @ 15psi
installed at 62k now at 67k
double roller timing chain failure took out oil pan, front cover and a few valves.

Old combo on 78mm turbo made 650WHP, this PT88 had to have been over 700WHP. Never got it to the dyno.
Uhhhh not stock bottom end^^^
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Old 09-20-2011, 08:22 PM
  #212  
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Just a newbe question here...but if the ecu has closed-loop compensation to keep the AFR in-line, how many of these failures could of been prevented??
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Old 09-20-2011, 08:31 PM
  #213  
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Originally Posted by 69-chvl View Post
Just a newbe question here...but if the ecu has closed-loop compensation to keep the AFR in-line, how many of these failures could of been prevented??
You are right newb question...its ok though
When in WOT you are no longer in closed loop. Narrowband o2 sensors are out of the equation under open loop.
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Old 09-20-2011, 08:38 PM
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Originally Posted by maxgee View Post
You are right newb question...its ok though
When in WOT you are no longer in closed loop. Narrowband o2 sensors are out of the equation under open loop.
Reason I ask is b/c the Holley HP ecu I'm currently running has closed-loop control/compensation even at wot, and it can compensate alot.

just trying to learn here fellas! Debating on the factory ecu or running the Holley.
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Old 09-20-2011, 08:53 PM
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Originally Posted by 69-chvl View Post
Reason I ask is b/c the Holley HP ecu I'm currently running has closed-loop control/compensation even at wot, and it can compensate alot.

just trying to learn here fellas! Debating on the factory ecu or running the Holley.
No problem, i was only making light of your question.
Most failures are due to a mechanical problem and not a tune.
Example: WG not opening and your foot is planted and boost shoots way past your fuel capabilities, if the holley system has a way to shut ignition down when you go dangerously lean than it's a good idea if you can swing one.
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Old 09-21-2011, 05:56 AM
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Originally Posted by maxgee View Post
No problem, i was only making light of your question.
Most failures are due to a mechanical problem and not a tune.
Example: WG not opening and your foot is planted and boost shoots way past your fuel capabilities, if the holley system has a way to shut ignition down when you go dangerously lean than it's a good idea if you can swing one.

Actually it does, you can program a number of fail-safes, I just have no idea how to do it lol!!

Carry-on!
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Old 09-21-2011, 09:37 AM
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Can't you just retard spark a lot and dump a lot of fuel in area of boost which you don't want to hit normally?
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Old 09-21-2011, 11:07 AM
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Originally Posted by Vetal View Post
Can't you just retard spark a lot and dump a lot of fuel in area of boost which you don't want to hit normally?
Yes, but doing it at the time the malfunction (non opening spring etc.) is going to be near impossible unless you have an aftermarket ecu that has failsafes like when it detects a lean condition for such and such amount of time it cuts fuel and spark.

You can retard timing vs. iat and vs. ect with the stock computer, but you can do it vs. boost, rpm, gear etc. on an aftermarket ecu. Not to mention what the guy above said about it having closed loop correction. Meaning if it senses a lean afr ratio at wot it can correct and add more fuel to compensate, then you have it set-up to where if that lean conditions carries on for more than x amount of seconds it shuts the motor down.
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Old 09-21-2011, 11:17 AM
  #219  
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i think its a good idea for tune set up but like said above most of the failures are not tune related. alot of them is from the ring gap.
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Old 10-05-2011, 07:46 PM
  #220  
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S475 turbo
Lq4 iron block
15psi/822hp
12000mi install odo
13800mi now still running
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