Evo Gt640 or Evo GT750
#31
04-22-2005, 08:20 AM
Bahrain996TT
If I were you I would save money and not send my engine over and over again to EVO or anyone else..Just get a reliable package, not a newborn untested one, you live thousands of miles away and no one where you live knows how to fix these engines, certainly not the dealer. Now that it is in the US (again!), get a milder state of tune that EVO and /or IA have tested for thousands of miles instead of the zillion hp one.
Focus on suspension, gearbox, weight and grip for your quartermile runs. 11 seconds is lousy, 130mph + shows you have more than enough hp and torque.
You need to have softer springs in the rear (400-500lbs maximum), shed weight, lots of it, work on your gears meticulously to hit 140mph in 4th, and you will be below 11seconds for sure. The gearshift alone will save you 0.4/0.5 seconds. Tire pressures ???
At the end of the day, no matter what you do, I will beat your quartermile runs at the BIC
Look me up on April 29th.
If I were you I would save money and not send my engine over and over again to EVO or anyone else..Just get a reliable package, not a newborn untested one, you live thousands of miles away and no one where you live knows how to fix these engines, certainly not the dealer. Now that it is in the US (again!), get a milder state of tune that EVO and /or IA have tested for thousands of miles instead of the zillion hp one.
Focus on suspension, gearbox, weight and grip for your quartermile runs. 11 seconds is lousy, 130mph + shows you have more than enough hp and torque.
You need to have softer springs in the rear (400-500lbs maximum), shed weight, lots of it, work on your gears meticulously to hit 140mph in 4th, and you will be below 11seconds for sure. The gearshift alone will save you 0.4/0.5 seconds. Tire pressures ???
At the end of the day, no matter what you do, I will beat your quartermile runs at the BIC
Look me up on April 29th.
#33
04-22-2005, 09:09 AM
GT kits
FWIW, my GT700 was significantly improved over the stage 4gt I had previously. Smoother power delivery throughout the rev range and very strong acceleration from lower rpm levels were all evident. I believe the better fuel delivery from the combined new larger injectors, fuel pump and programming were the key. It helped that I also had the IBE program switcher so I was able to run different octane levels. I'd do it again if I bought another turbo or GT2. However, I suggest upgrading the clutch and anything over GT700 would need strengthened internals. I really miss that motor.
Last edited by NelsonF; 04-22-2005 at 10:39 AM.
#34
04-22-2005, 09:57 AM
02 X50, there are several packages we carrry that may require race gas and there are some that require a fuel system upgrade and run on pump gas to achieve those numbers. We are working to upgrade the website to reflect that.
My car is well over those numbers wihtout the use of race gas. As a dialy driver 100 octane prices would make it not usable for daily use.
My car is well over those numbers wihtout the use of race gas. As a dialy driver 100 octane prices would make it not usable for daily use.
#35
04-22-2005, 08:02 PM
Originally posted by Hamann7
So what exactly is the GT750? It sounds like it is the Stage 4GTR with uber amounts of boost?
So what exactly is the GT750? It sounds like it is the Stage 4GTR with uber amounts of boost?
It's a 10 second car is what it is.... And that was low boost.
#36
04-22-2005, 08:04 PM
Originally posted by Todd @ EVO
Tyson, our GT750 is very different. I will be posting all of the new information on the 3 new tuning systems as well as some new products shortly. Some of you have the information from speaking with me directly however we were not planning on releasing the information until mid this month. I apologize for the confusion.
Tyson, our GT750 is very different. I will be posting all of the new information on the 3 new tuning systems as well as some new products shortly. Some of you have the information from speaking with me directly however we were not planning on releasing the information until mid this month. I apologize for the confusion.
. Pick on some other owners like the Cayman...BTW I tried out the TQ converter yesterday for the first time at the drag strip. Not sayin' anything yet but let's just say on my practise run/shake down run without even launching hard I was kicked out
In any case, I think us Tip owners will really like it. I think it was Anders/John/Mike right that took care of mine?
#37
04-22-2005, 08:08 PM
Originally posted by PorschePhd
02 X50, there are several packages we carrry that may require race gas and there are some that require a fuel system upgrade and run on pump gas to achieve those numbers.
02 X50, there are several packages we carrry that may require race gas and there are some that require a fuel system upgrade and run on pump gas to achieve those numbers.
#39
04-24-2005, 07:44 AM
Originally posted by sharkster
You lookin' at it man It's a 10 second car is what it is.... And that was low boost.
You lookin' at it man
It's a 10 second car is what it is.... And that was low boost.
how did the stock internals of the car look prior to going under the knife. Im at 31K miles and although I have much less HP/TQ, im just curious.
Im done in terms of power mods, so I think i'll be ok...however im wondering if stock internals will hold up well with the measly 600HP that I have.... LOL!
Keep in mind that I have 31K on the clock...11k on the new setup and previous 16K with the standard ecu upgrade and exhaust. Sorry to hijack the thread.
#40
04-24-2005, 09:09 AM
If I might step in since we build a lot of motors...sorry.
The motors we have built at 600HP at the crank start to show bearing shadowing at about 18-20K miles. The rods are not bending here, but the failure of the rod bolt is evident. Keep in mind that usage, constant RPM band and over revving all will accelerate that issue. Overall the bearings have looked good and just show signs. I have yet to see one fail all together.
At your level I have not torn one motor down that has had an issue with bent rods. Although we have several others and it happens now on a regular basis with higher HP levels.
In your case keep the oil changed regularly and look for material in it. Send it out if you would like to have it analyzed. If you start to see more bearing content then make appropriate plans.Typically your oil pressure also becomes an issue on the top end.
The motors we have built at 600HP at the crank start to show bearing shadowing at about 18-20K miles. The rods are not bending here, but the failure of the rod bolt is evident. Keep in mind that usage, constant RPM band and over revving all will accelerate that issue. Overall the bearings have looked good and just show signs. I have yet to see one fail all together.
At your level I have not torn one motor down that has had an issue with bent rods. Although we have several others and it happens now on a regular basis with higher HP levels.
In your case keep the oil changed regularly and look for material in it. Send it out if you would like to have it analyzed. If you start to see more bearing content then make appropriate plans.Typically your oil pressure also becomes an issue on the top end.
#42
04-24-2005, 10:41 AM
Originally posted by PorschePhd
If I might step in since we build a lot of motors...sorry.
The motors we have built at 600HP at the crank start to show bearing shadowing at about 18-20K miles. The rods are not bending here, but the failure of the rod bolt is evident. Keep in mind that usage, constant RPM band and over revving all will accelerate that issue. Overall the bearings have looked good and just show signs. I have yet to see one fail all together.
At your level I have not torn one motor down that has had an issue with bent rods. Although we have several others and it happens now on a regular basis with higher HP levels.
In your case keep the oil changed regularly and look for material in it. Send it out if you would like to have it analyzed. If you start to see more bearing content then make appropriate plans.Typically your oil pressure also becomes an issue on the top end.
If I might step in since we build a lot of motors...sorry.
The motors we have built at 600HP at the crank start to show bearing shadowing at about 18-20K miles. The rods are not bending here, but the failure of the rod bolt is evident. Keep in mind that usage, constant RPM band and over revving all will accelerate that issue. Overall the bearings have looked good and just show signs. I have yet to see one fail all together.
At your level I have not torn one motor down that has had an issue with bent rods. Although we have several others and it happens now on a regular basis with higher HP levels.
In your case keep the oil changed regularly and look for material in it. Send it out if you would like to have it analyzed. If you start to see more bearing content then make appropriate plans.Typically your oil pressure also becomes an issue on the top end.
Could I send the oil to you for analysis... or do you know of a place where I can send it?
#45
04-24-2005, 01:12 PM
Re: Evo Gt640 or Evo GT750
Originally posted by Bahrain 996TT
hi guys , i need your help if you had the choice between Evo GT640 or Evo Gt750 which one would perform better for 1/4 mile racing keep in mind the GT750 has a bigger turbo with 50-75 more hp i'll be using my car alot in drag strips + which one is more daily use ? any of you guys tested or installed one of the above upgrades from Evo .
hi guys , i need your help if you had the choice between Evo GT640 or Evo Gt750 which one would perform better for 1/4 mile racing keep in mind the GT750 has a bigger turbo with 50-75 more hp i'll be using my car alot in drag strips + which one is more daily use ? any of you guys tested or installed one of the above upgrades from Evo .