Driving a Turbo Porsche at Lime Rock, for you enjoyment |
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Driving a Turbo Porsche at Lime Rock, for you enjoyment |
Andyrew |
Oct 17 2004, 12:07 PM
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#21
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Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California |
.7 or so more bar... or about 10 psi, x 10-20 hp per psi....
ya.... |
TimT |
Oct 17 2004, 03:37 PM
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#22
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
We have a boost controler to hold the wastegate, so dont think its a wastegate problem. When boost is turned up the needle fluctuates between 1.2 and 1.1 bar, someone told me that the greddy blow-off-valves suck, so Im leaning to the BOV's not holding boost,the valve is being pushed off the seat by the boost pressure or something.. gonna get some HKS valves and try them out.Back to Lime Rock next weekend for some more testing
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Dman |
Oct 17 2004, 04:18 PM
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#23
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Member Group: Members Posts: 163 Joined: 18-February 03 From: Sacramento CA Member No.: 311 |
Thank's! (IMG:style_emoticons/default/drooley.gif) Now all I can do is sit here and dream about what it would be like if my Audi sounded like that!
Only time I ever hear mine is next to the center seperator wall on the freeway. (IMG:style_emoticons/default/huh.gif) |
larryp |
Oct 17 2004, 09:25 PM
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#24
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Member Group: Members Posts: 311 Joined: 9-May 03 From: Greenwich CT Member No.: 675 |
QUOTE I have to bust my ass to do 1:01s with my N/A 1.8L. You do it even having to wait for slowpokes to get out of the way. It looks so easy with a little boost. If you time it, it looks like he was running 1:02s. It goes to show just how little power gets you there, since the straights are so short. I was more impressed with Steve Savino (944T) and Spencer Cox (Cup car) at the PCA club race, running 57s in the wet. |
TimT |
Oct 18 2004, 06:16 PM
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#25
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
QUOTE I was more impressed with Steve Savino (944T) and Spencer Cox (Cup car) at the PCA club race, running 57s in the wet OK whatever blows your skirt up I was doing 1:01-1:02 my friend was doing 56-58 (its his car LOL) For all the critics, we finished a rebuild the night before this event, and decided to get some break in time on the car. Short shifted 7500 instead of 8500 etc.. Racer Chris deserves an AMAZING KUDOS he is turning 1:01 in a 1.8 ltr 914 driving the effing wheels off that car!! Does Spencer ever drive a car he owns at a race? |
TimT |
Oct 18 2004, 06:18 PM
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#26
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
Also this car is geared for The Glen or Summit
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Curvie Roadlover |
Oct 18 2004, 06:28 PM
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#27
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Two trunks are better than one! Group: Members Posts: 2,025 Joined: 29-December 02 From: Southeast Michigan Member No.: 42 |
What kind of camera mount are you using? Very steady horizon despite the dash bouncing around. (IMG:style_emoticons/default/blink.gif)
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TimT |
Oct 18 2004, 06:33 PM
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#28
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
the camera mount is an IO port mount.... if you set up a camera in a car spend extra time trying to get a short lever arm on the mount..
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TimT |
Oct 18 2004, 06:36 PM
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#29
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
QUOTE Very steady horizon despite the dash bouncing around. \err also in this car you get the crap beat out of you... I have some datalogs showing acceleration rates... have to distill them |
Brett W |
Oct 18 2004, 06:52 PM
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#30
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Advanced Member Group: Members Posts: 2,858 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None |
What turbo do you have? A TE04? I have never seen a T40. Yes greddy BOVs suck the big one. HKS is not much better. Look for Tial they are substanially better. What type of wastegates are you running? I would go back and check the routing and vaccum feed for the wastegates to make sure they are readingt the right amount of vaccum/boost. What are you running for boost control? Electronic boost controller or manual boost controller?
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TimT |
Oct 18 2004, 07:10 PM
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#31
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
QUOTE What turbo do you have? garret gt 40 hybrid... Durabuilt put it together yes electronic boost controll. The engine had an HKS 60 , now a Tial 46... how many of you have tuned 3.8ltr flat sixes? we dont give a crap about a 1/4 mile times |
Brett W |
Oct 18 2004, 07:56 PM
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#32
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Advanced Member Group: Members Posts: 2,858 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None |
I don't tune for the quarter mile either. What the hell is that supposed to mean?
I have very little interest in Aircooled Flat six engines, other than from a novelty aspect. I am sure your customers car is fast and he has no doubt sunk tons of money into it. here is one flow map: http://not2fast.wryday.com/turbo/maps/gt40-56trim.jpg Here is the other. http://not2fast.wryday.com/turbo/maps/GT40compress.jpg |
Jake Raby |
Oct 18 2004, 08:04 PM
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#33
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Damn, that thing is sick!
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Mueller |
Oct 18 2004, 11:04 PM
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#34
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
i played that a few times at work with the sound cranked up, had to call over a big time BMW fan/driver co-worker to show him a "real" car in action (IMG:style_emoticons/default/MDB2.gif)
does the haltec do any kind of data logging to help out? |
TimT |
Oct 19 2004, 05:35 AM
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#35
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
yes the haltech can data log, however boost isnt one of the inputs we measure. We log EGT and lambda with rpm.
melted a cylinder earlier this year (IMG:style_emoticons/default/unsure.gif) |
larryp |
Oct 19 2004, 06:35 AM
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#36
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Member Group: Members Posts: 311 Joined: 9-May 03 From: Greenwich CT Member No.: 675 |
QUOTE OK whatever blows your skirt up Sorry, I was unclear. I was not trying to making some point about the driving but the difficulty of getting fast speeds there, since hp really does not get you much. Even spec miatas turn 101s. All the extra hp makes it harder, I think, except for passing By the way, a friend (in spec miata) watched the video and wrote QUOTE But he has a nice line. Too bad he isn't racing anyone |
TimT |
Oct 19 2004, 06:56 AM
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#37
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
I agree, this car works well at Watkins Glen, at Lime Rock it runs out of room really fast.
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ChrisFoley |
Oct 19 2004, 07:04 AM
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#38
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I am Tangerine Racing Group: Members Posts: 7,962 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
QUOTE(larryp @ Oct 19 2004, 08:35 AM) Even spec miatas turn 101s. Someone's been telling you fibs. (IMG:style_emoticons/default/chatsmiley.gif) The SM lap record is a high 1:03. The fast ones typically run in the 1:04s. BTW, I beat an entire SM field last year with my 100hp (previous) engine. (IMG:style_emoticons/default/laugh.gif) I think Mike Schrom was doing 50s at LRP in his "935" before he went pro. He had close to 2 bar of available boost I think. |
URY914 |
Oct 19 2004, 07:08 AM
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#39
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I built the lightest 914 in the history of mankind. Group: Members Posts: 123,652 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
Kinda like "point and shoot" with a 935.
Get it pointed stright and shoot the gas to it. Paul |
TimT |
Oct 19 2004, 03:37 PM
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#40
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
Chris, I need to get you to ride shotgun in my car someday, and do a little coaching!!
In my 914 with about 275 hp, I at best do 1:04-5 at Lime Rock. Driving my friends car was easy with so much power under my foot, Like Paul says, points and shoot |
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