951 and the GT-k turbo
#78
The pressure plate is build by Gomes. It startes out as a stock unit, and he mods it from there depending on the tq application. The disc is a four puck style setup to handle this power. The flywheel is stock, but machined and lightened.
Gomes first disc did not last very long, but it GRABBED once released. We are trying another compound that will have less chatter and hopefully hold as well. I don't like to put the power down on takeoff, and speed shifting with 450tq isn't a good idea, no matter the clutch you have. Our transmissions can't handle abrubt hits with so much tq.
It won't be babied by any means, but I wanted a disc that would last longer than 10K miles. Tim is coming up with the disc in this application.
George
Gomes first disc did not last very long, but it GRABBED once released. We are trying another compound that will have less chatter and hopefully hold as well. I don't like to put the power down on takeoff, and speed shifting with 450tq isn't a good idea, no matter the clutch you have. Our transmissions can't handle abrubt hits with so much tq.
It won't be babied by any means, but I wanted a disc that would last longer than 10K miles. Tim is coming up with the disc in this application.
George
#79
This statement is from an article on turbos and using synthetic oil:
The popular Mobil 1 synthetic oil, common in the racing world, can withstand temperatures of 350 degrees continuously and even 450 degrees intermittently without significant degradation. With proper lubrication, turbochargers will easily last the life of the engine without water cooling when high grade synthetic oils are used.
This statement was part of an article about old oils and the need for water cooling jackets on turbos when using non-synthetic oils. The older 911 turbos had issues with their turbos because of non-synthetic oils.
Notice that the newer 911 air cooled turbo cars don't have issues with their turbos anymore. They are using synthetic. We are seeing 1996 911TT's with close to 100K and above with original turbos on them. They have never had anything but oil for cooling and will probably last as long as the motors, if treated well at stock boost levels.
Thought this might be of interest.
George
The popular Mobil 1 synthetic oil, common in the racing world, can withstand temperatures of 350 degrees continuously and even 450 degrees intermittently without significant degradation. With proper lubrication, turbochargers will easily last the life of the engine without water cooling when high grade synthetic oils are used.
This statement was part of an article about old oils and the need for water cooling jackets on turbos when using non-synthetic oils. The older 911 turbos had issues with their turbos because of non-synthetic oils.
Notice that the newer 911 air cooled turbo cars don't have issues with their turbos anymore. They are using synthetic. We are seeing 1996 911TT's with close to 100K and above with original turbos on them. They have never had anything but oil for cooling and will probably last as long as the motors, if treated well at stock boost levels.
Thought this might be of interest.
George
#81
OT, but I didn't know that the TDI turbo used oil only. That is one hell of a motor. I've always wondered why someone would purchase a hybrid, when a TDI gets almost 50mpg on the freeway and mid 30's in the city. The TDI wagon with a five speed has to be one of the best wagons for effeciency I've ever driven. Great tq off the line and the fit and finish was excellent.
#82
Man enough of the Bonaducci pictures.That dude is old and tired and honestly I dont really look like him.Actually, I and alot of other people who have told me so, think I look more like Mark Mcguire then Bonaducci.
#83
Tim in his prime
Look,
I don't care how good looking Tim is. I just want him to make that big-*** old technology, oil cooled turbo to spool 15psi by 3500rpm. His good looks are just a bonus while hanging with him at the dyno shop.
Here is a pic of Tim in his prime.
I don't care how good looking Tim is. I just want him to make that big-*** old technology, oil cooled turbo to spool 15psi by 3500rpm. His good looks are just a bonus while hanging with him at the dyno shop.
Here is a pic of Tim in his prime.
#84
Wait, I just thought about this post. Are you considering an actual T4/T67/T04Z for your 951? That's overkill for anything below 650-700whp (unless the idea is to create lots of lag!), but a manly-sized turbo nevertheless.
If this turbo does not get 15psi by 3500 rpm we will go down one size. With proper tuning, a 3.0 with 104.5 pistons, 4" intake, adjustable cam gear, MAX951PRO software, and appropriate exhaust, we will go down to the GTK 550 Turbo. Russell has been able to get the 2.5 to hit 15psi on the LR super 75 on a 2.5 by 3000rpm by proper tuning.
We'll give it our best shot. Overkill only if you have too much lag. If we can make it work on this motor, I'll be a happy customer. If not, the 550 will suffice.
George
George
If this turbo does not get 15psi by 3500 rpm we will go down one size. With proper tuning, a 3.0 with 104.5 pistons, 4" intake, adjustable cam gear, MAX951PRO software, and appropriate exhaust, we will go down to the GTK 550 Turbo. Russell has been able to get the 2.5 to hit 15psi on the LR super 75 on a 2.5 by 3000rpm by proper tuning.
We'll give it our best shot. Overkill only if you have too much lag. If we can make it work on this motor, I'll be a happy customer. If not, the 550 will suffice.
George
George
#85
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From: Denver
#88
I hope Tim or any other builders who have the nads to push the envelope succeeded at what they are trying to build. I know that the 951 has way more potential than 400+ WHP
Because there are Nissan 240SX’s with 2.0 liters putting down high 500 WHP utilizing the GT-K’s GT-R’s and so forth. I also know that the 951’s can make a huge statement if they catch up with the Japanese tuner market ( I know that 50% have been parted out or Crashed) . All we have to do is think outside the 944 box.
Because there are Nissan 240SX’s with 2.0 liters putting down high 500 WHP utilizing the GT-K’s GT-R’s and so forth. I also know that the 951’s can make a huge statement if they catch up with the Japanese tuner market ( I know that 50% have been parted out or Crashed) . All we have to do is think outside the 944 box.