Reliability of the modified ~700 hp 997 TTs?
#46
I have about 4000 miles on my Protomotive K24/18g setup. Everyone likes to refer to it as the 650 hp kit. I've had no problems at all.
I believe the vast majority of engine damage is caused by people getting boost happy on pump gas. If you can exercise some restraint and use common sense you have nothing to worry about. These engines are extremely well built.
I believe the vast majority of engine damage is caused by people getting boost happy on pump gas. If you can exercise some restraint and use common sense you have nothing to worry about. These engines are extremely well built.
#47
)))))) 9FF...780HP here with lots of mods and engine build and so on...only runned 11.1 here at 128 or so...owner very disaponted and selling it now...
Last edited by GT RUS; 01-14-2009 at 05:23 AM.
#48
i know also a guy here with 590bhp kit from 9ff in his TT, here in greece, who is very disapointed also)))))))))))
#49
I been to dragway last weekend with my EVT700 setup,I did only 11.33 myself but my friend,a professional drag racer done my car in 10.97,thats with stock clutchs and stock tires.The launch is very important for modified 997tt.Cant be too high or too low,He did the launch job just about to perfact..
#50
I'm curious as to why you would want to modify your car, if as you say you drive very conservatively, don't use the car on a daily basis or on the track, and you're concerned about possible warranty issues.
If you want to have increased horsepower only for "bragging rights", you've got to know that the minute you roll it out of the shop someone else is going to drive up with 50 more horsepower than you. (Like the fastest gun in the West.)
If you want to have increased horsepower only for "bragging rights", you've got to know that the minute you roll it out of the shop someone else is going to drive up with 50 more horsepower than you. (Like the fastest gun in the West.)
By the way I am not buying the explanation of why the mods, over a period of time will decrease that much in power. That could be said of any car.
#51
Sorry, I didn't mean to offend you with my question. It was just that you listed a number of reasons why one shouldn't modify a car. I've been down this road myself and in my case I over modified the car to the point it had more power than the platform could reliably accommodate.
#52
#53
He should get a pro racer to test the car instead of him before make decision..
I been to dragway last weekend with my EVT700 setup,I did only 11.33 myself but my friend,a professional drag racer done my car in 10.97,thats with stock clutchs and stock tires.The launch is very important for modified 997tt.Cant be too high or too low,He did the launch job just about to perfact..
I been to dragway last weekend with my EVT700 setup,I did only 11.33 myself but my friend,a professional drag racer done my car in 10.97,thats with stock clutchs and stock tires.The launch is very important for modified 997tt.Cant be too high or too low,He did the launch job just about to perfact..
I think 780 package includes may be G28 or 30s turbos with such lag (boost arrives at 3000+) he cant launch from turbo zone like VTG can...other thing that they might not solved the problem with ECU cutting the power down in 1st 3 gears in order not to destroy the box...We had that problem with my previous TipS...only runned 0-in 3,2 and I wasnt happy...Lucky enough to have tuner like Tym Swizter who told ME what is the problem and went beyond him self and did everything to solve it and that is why my car produced such results...
#54
Sorry, I didn't mean to offend you with my question. It was just that you listed a number of reasons why one shouldn't modify a car. I've been down this road myself and in my case I over modified the car to the point it had more power than the platform could reliably accommodate.
#55
All you need to know: they don't make videos about 700 kits exploding
Last edited by bbywu; 01-15-2009 at 08:34 PM.
#58
Real failures missing - HELP!
I appreciate (thanks, good stuff) all the positive postings re reliability issues, and with no disrespect intended, all seem to positive but none have any serious miles (50K+) on their new power kits .I'm getting ready to pull the plug on a 600-620 kit so I'm collecting information, including from a reputable club that provides mechanics' advice (guys that race and rebuild engines - discretion requires that I not be more specific). They mention numerous 996 cases of rod bearing issues and engine rebuilds from upgraded kit, especially those that see over a dozen or so track days a year (internals are similar to 997 are they not?). They mention that tracking these cars (especially with new power kits) required engine rebuilds MUCH more frequently (50-100 track hours) - and I know that designated track/race cars require this. Even some stock 997s have problems so surely there are some with power kits that have problems as well - what are they and what can we do about it to minimize them?
For those of you have added the kits (especially the 700 kits ) and spend days on the track can you comment on this (any mechanics or engineers out there?), and:
1. Do you change your oil more regularly or do anything else proactively for reliability?
2. What if any plans do you have for extra engine wear and tear?
3. What does an engine rebuild (is the same as replacing rod bearings?) cost?
4. What are more of the mechanical issues involved that are yet to be discussed in this matter?
5. ***** This is NOT a criticism of any company or manufacturer of the quality kits and products out there - period! I just want more info when I pull the plug for planning purposes. Puleeeze, no company bashing, it's getting tiring. *****
K.
For those of you have added the kits (especially the 700 kits ) and spend days on the track can you comment on this (any mechanics or engineers out there?), and:
1. Do you change your oil more regularly or do anything else proactively for reliability?
2. What if any plans do you have for extra engine wear and tear?
3. What does an engine rebuild (is the same as replacing rod bearings?) cost?
4. What are more of the mechanical issues involved that are yet to be discussed in this matter?
5. ***** This is NOT a criticism of any company or manufacturer of the quality kits and products out there - period! I just want more info when I pull the plug for planning purposes. Puleeeze, no company bashing, it's getting tiring. *****
K.
#59
I appreciate (thanks, good stuff) all the positive postings re reliability issues, and with no disrespect intended, all seem to positive but none have any serious miles (50K+) on their new power kits .I'm getting ready to pull the plug on a 600-620 kit so I'm collecting information, including from a reputable club that provides mechanics' advice (guys that race and rebuild engines - discretion requires that I not be more specific). They mention numerous 996 cases of rod bearing issues and engine rebuilds from upgraded kit, especially those that see over a dozen or so track days a year (internals are similar to 997 are they not?). They mention that tracking these cars (especially with new power kits) required engine rebuilds MUCH more frequently (50-100 track hours) - and I know that designated track/race cars require this. Even some stock 997s have problems so surely there are some with power kits that have problems as well - what are they and what can we do about it to minimize them?
For those of you have added the kits (especially the 700 kits ) and spend days on the track can you comment on this (any mechanics or engineers out there?), and:
1. Do you change your oil more regularly or do anything else proactively for reliability?
2. What if any plans do you have for extra engine wear and tear?
3. What does an engine rebuild (is the same as replacing rod bearings?) cost?
4. What are more of the mechanical issues involved that are yet to be discussed in this matter?
5. ***** This is NOT a criticism of any company or manufacturer of the quality kits and products out there - period! I just want more info when I pull the plug for planning purposes. Puleeeze, no company bashing, it's getting tiring. *****
K.
For those of you have added the kits (especially the 700 kits ) and spend days on the track can you comment on this (any mechanics or engineers out there?), and:
1. Do you change your oil more regularly or do anything else proactively for reliability?
2. What if any plans do you have for extra engine wear and tear?
3. What does an engine rebuild (is the same as replacing rod bearings?) cost?
4. What are more of the mechanical issues involved that are yet to be discussed in this matter?
5. ***** This is NOT a criticism of any company or manufacturer of the quality kits and products out there - period! I just want more info when I pull the plug for planning purposes. Puleeeze, no company bashing, it's getting tiring. *****
K.
#60
Clarification please
cgng30,
Thanks for the reply. Could you provide some details (and or experience) how you come to your opinion. It's encouraging, so I'd like to know more!
Thanks in advance.
K.
Thanks for the reply. Could you provide some details (and or experience) how you come to your opinion. It's encouraging, so I'd like to know more!
Thanks in advance.
K.