So, anyone know of (or have) a GT40 replica that can do 0-60mph in under 5 seconds and still hit 200mph on the Mulsanne straight? I have read several times that many GT40 replica companies build cars that are better than the original in build quality and technology, but haven't read anything about them going 200mph. Discuss. /ubbthreads/images/graemlins/grin.gif
Vroom. . .
- Thread starter LeGT40Mans
- Start date
Pete McCluskey.
Lifetime Supporter
I am sure that with today's engine technology there would be many replicas capable of both 0-60mph under 5 and 200mph.
All depends on the gear ratios and the length of the straight.
All depends on the gear ratios and the length of the straight.
LeMans.
Maybe you should be the first to try /ubbthreads/images/graemlins/wink.gif /ubbthreads/images/graemlins/wink.gif
Maybe you should be the first to try /ubbthreads/images/graemlins/wink.gif /ubbthreads/images/graemlins/wink.gif
The 0-60 under 5 seconds is easy, but the 200MPH top end, in the same car....?????? J6(original MKIV) maybe, with one ring & pinion for the 0-60,and a LeMans ring & pinion for the 200MPH!
Hey Jim, Can you swap R&Ps on the fly? /ubbthreads/images/graemlins/wink.gif /ubbthreads/images/graemlins/grin.gif
I don't believe that a replica has ever seen the 200MPH barrier. A 200MPH replica is certainly possible, but it would be a dog, from 0-60, and not much fun on the street, unless it had a custom 4th and 5th gear installed in a typical "street" gearbox. Mid 170's has been accomplished by a few replicas.
John Tiemann intends to run his highly modified GT40 Australia car in the 180MPH class of the Open Road Racing Series, out west(Nevada?), next year. (180MPH average over a timed course) Here's hoping that he sets a new mark for other replica owners to shoot for!
Hey Jim, Can you swap R&Ps on the fly? /ubbthreads/images/graemlins/wink.gif /ubbthreads/images/graemlins/grin.gif
I don't believe that a replica has ever seen the 200MPH barrier. A 200MPH replica is certainly possible, but it would be a dog, from 0-60, and not much fun on the street, unless it had a custom 4th and 5th gear installed in a typical "street" gearbox. Mid 170's has been accomplished by a few replicas.
John Tiemann intends to run his highly modified GT40 Australia car in the 180MPH class of the Open Road Racing Series, out west(Nevada?), next year. (180MPH average over a timed course) Here's hoping that he sets a new mark for other replica owners to shoot for!
Owning a 200mph capable car and doing 200mph are not the same thing...something to do with driver skill.
In fact I recall a magazine editor killing himself in a top speed test of a "supercar" a little while back.
MikeD
In fact I recall a magazine editor killing himself in a top speed test of a "supercar" a little while back.
MikeD
Pete McCluskey.
Lifetime Supporter
Go to search and type in 200mph! You can read all about it
My car will be capable of over 200MPH. Using the Renault transaxle, 5th gear ratio 0.76 and a diff 3.44.
However, although the car in theory, is capable of 200MPH I think it would require a good deal of preparation to attempt to drive between 175-200MPH. Lift is what scares the hell out of me. If the car is not setup perfectly then the car could flip. GAME OVER!! /ubbthreads/images/graemlins/blush.gif
Does anyone have the figures for lift generated at 200MPH? This is the deciding factor for me.
If feasable then I am up for trying a 200MPH run later in the year or early next. /ubbthreads/images/graemlins/cool.gif But its finding somewhere to do it. /ubbthreads/images/graemlins/confused.gif
Regards,
J.P
Oh, and 60 should be up in less than 4 secs.
However, although the car in theory, is capable of 200MPH I think it would require a good deal of preparation to attempt to drive between 175-200MPH. Lift is what scares the hell out of me. If the car is not setup perfectly then the car could flip. GAME OVER!! /ubbthreads/images/graemlins/blush.gif
Does anyone have the figures for lift generated at 200MPH? This is the deciding factor for me.
If feasable then I am up for trying a 200MPH run later in the year or early next. /ubbthreads/images/graemlins/cool.gif But its finding somewhere to do it. /ubbthreads/images/graemlins/confused.gif
Regards,
J.P
Oh, and 60 should be up in less than 4 secs.
Of all the cars I have seen only one may be able to acheive this challenge and that is Roy's car. I haven't seen JPs car but I think he's being optimistic again!
Sub 5 secs to sixty is the easy bit as said above. Heck, even my car has done that (4.83 secs timed with a radar gun at Silverstone)but 200 mph?
Roy managed 170mph plus at an airfield but ran out of room even though the car was still pulling on strongly. I know he would love to do 200 mph but needs a bit more than 1.75 miles of runway to do it in.
In the same distance most other cars only managed 130 mph so Roy's car is pretty special.
Wind resistance and lift is what is going to get you!
Malcolm
Sub 5 secs to sixty is the easy bit as said above. Heck, even my car has done that (4.83 secs timed with a radar gun at Silverstone)but 200 mph?
Roy managed 170mph plus at an airfield but ran out of room even though the car was still pulling on strongly. I know he would love to do 200 mph but needs a bit more than 1.75 miles of runway to do it in.
In the same distance most other cars only managed 130 mph so Roy's car is pretty special.
Wind resistance and lift is what is going to get you!
Malcolm
Rick Merz
Lifetime Supporter
About 3 years ago on I64 the traffic was light and I had my car sorted out so I thought I'd go for 200mph. I came to a stretch of expressway that was flat with no cars in sight and no entrance ramps for miles so I ran up through the gears 150mph in 4th shift to 5th climbed to 190mph when I started loosing wheel weights (clip on, now tape on), it sounded like someone was shooting at my car so I slowed down to 65mph and continued home. At the time I had a 351W that would spin to 8,000rpm and I was using it all. With the gearing that I have 7,500rpm = 216mph in 5th gear. Well now that I have a bigger torque motor with hyd cam I can only turn 6,500rpm so my days of trying to see 200mph are over because I do not want to re-gear my trans. I will add that my GTD seemed very stable at 190mph, but then I was going in a straight line at the time.
An ERA GT was built about 5 years ago for the Silver State Classic. 680 bhp (Fontana 427) and geared for 230 mph. He was reluctant to do standing starts for fear of breaking the transaxle, but I suspect that he could nurse the car to an under-five-second 0-60. /ubbthreads/images/graemlins/cool.gif
Scary!
Scary!
BOB who makes the crossover exhaust sys to fit YATES style heads like on ERA 2063? nice workmanship!
thanks DEAN
thanks DEAN
The aerodynamics of a GT40 make it capable of speeds in excess of 200MPH. However, the car MUST be set up perfectly suspension wise. If not, the car will become airborne. NASCAR cars are dialed in to run at speeds close to 200MPH. And there not done by home mechanics like us.
If you really want to do 200MPH in a GT40, have it set up by a prefessional. Your life depends on it!!
Bill D
If you really want to do 200MPH in a GT40, have it set up by a prefessional. Your life depends on it!!
Bill D
The design of this car produces about 900 lbs of lift at 220 (MK-IV) A modern race car produces almost a ton of downforce at that speed. These are nice old cars but as Ken found out they can kill you fast if something goes wrong at that speed.
Lots of front-to-rear rake, possibly a front chin splitter (like the new GT has), proper gearing and a 450+ hp engine along with a safe place to make the attempt and it should be doable.
Mark
Funny about that splitter. The MK-IV has one. Rake is also a very good idea. Tires I'd think about them as well.
Funny about that splitter. The MK-IV has one. Rake is also a very good idea. Tires I'd think about them as well.
Mark
I suspect 450 hp (flywheel) will not do it. Too much drag and driveline losses. I confess I cannot recall the exact
formula, but I was surprised how much HP is lost overcoming
drag over 100 MPH...and I believe it goes up exponentially.
Also, a lot depends on how much room you are allowing.
Given 10 miles of salt flat, you can make do with lot's less
HP than required to hit 200 on any closed track in the US.
MikeD
I suspect 450 hp (flywheel) will not do it. Too much drag and driveline losses. I confess I cannot recall the exact
formula, but I was surprised how much HP is lost overcoming
drag over 100 MPH...and I believe it goes up exponentially.
Also, a lot depends on how much room you are allowing.
Given 10 miles of salt flat, you can make do with lot's less
HP than required to hit 200 on any closed track in the US.
MikeD
