200 mph 850?

**sundog** · Tuesday 10th April 2012, 18:36

the main ambition for my project volvo it to break 200mph in it, is anyone aware of any volvos doing a genuine 200+mph already.

just trying to build up the ideas,

please share your thoughts thanks

**martybelfastt5** · Tuesday 10th April 2012, 18:41

quickest ive seen is jc viggens volvo 850 t5r tho im not sure the gearbox allows 200 could be wrong tho think his did around 180

**stephenevans99** · Tuesday 10th April 2012, 18:43

I'm certainly no expert, but I feel aerodynamics will be the biggest hurdle. You could have all the hp in the world, but an 850 is still an 850 !!

**Tim Williams** · Tuesday 10th April 2012, 18:44

IIRC MTE have managed over 200MPH in their tuned S60R.

I very much doubt you will get an 850 over 200MPH on the stock gearing and it would take quite a bit of space also. I have run quite a few Volvo's at Bruntingthorpe and not managed over 170MPH but none had nearly enough power to do 200MPH. On a derestricted road I can get 177MPH out of mine on standard gearing but only 170MPH at Bruntingthorpe...

JC Viggens maxed out at about 155 after the diff was fitted due to being a lower than stock ratio box for his car.

**sundog** · Tuesday 10th April 2012, 18:45

yeah, ive been reading through loads of posts and people are saying with the rev limiter intact the most you can get is 162mph. but im sure someone has found gear kits or made gear kits for higher top speeds, even tyre circumference would have some effect on the gearing how much so i do not know.

**Kingsford G** · Tuesday 10th April 2012, 18:46

U`ll need a high ratio g/box for that mate.

**sundog** · Tuesday 10th April 2012, 18:48

i think i can make the aerodynamics a little better i mean there isnt really alot of frontal area on them so i guess its making the most of turbulence and cutting the air right first.

dont go to hard on my dreams haha

**dalhousie2008** · Tuesday 10th April 2012, 18:50

I think martin said some v70 p2 could get near with gearing

**sundog** · Tuesday 10th April 2012, 18:54

sorry whats a p2?

i have an early 850 saloon was my grandads now my inheritance and judging by the cars he used to have i want to make this special. i have currently collected an me7? engine from a v70r for a very irresistible price, just getting ideas and waiting for a daily car to come along so i can get started.

**t5_monkey** · Tuesday 10th April 2012, 18:58

you can calculate the power required.

If you have 250bhp and 150mph top speed.....

divide 200 by 150 and square the result (1.777)

so you need 1.777 times 250 which is 444bhp.

plus 10 percent for fudge factor plus you'll never get a runway long enough to actually reach top speed @ 200mph...

= 490bhp

Of course... you may also die if you attempt this :-)

At the speed every bit of wind resistance counts so consider aerodynamic wheel trims, removing the wing mirrors, waxing the car and taping panel gaps (and covering the radiator)

**T5frankie** · Tuesday 10th April 2012, 19:01

Originally Posted by sundog

yeah, ive been reading through loads of posts and people are saying with the rev limiter intact the most you can get is 162mph. but im sure someone has found gear kits or made gear kits for higher top speeds, even tyre circumference would have some effect on the gearing how much so i do not know.

the m59 will max out at 162 mph, seen it on then dyno

**M-R-P** · Tuesday 10th April 2012, 19:02

P2 (Phase 2 - same shape as mine) some of the gearboxes, usually specified by plod, are capeable of 192mph @6000rpm in 5th. It's called the M56LK (I know, I got one **ahem143 in 4th ahem**

)
Pedro was telling me about another box that'll do about 195 @6000rpm.

**t5_monkey** · Tuesday 10th April 2012, 19:02

Originally Posted by t5frankie

the m59 will max out at 162 mph, seen it on then dyno

must be short gearing? S40 is 30mph / 1000 and runs to 6500rpm (195 theoretical)

**sundog** · Tuesday 10th April 2012, 19:02

that wouldn't take into account the increase in drag and turbulence though would it? and that seems a fairly achievable sum of power from some of the builds i have read on here.

**sundog** · Tuesday 10th April 2012, 19:04

Originally Posted by martinrpeachey

P2 (Phase 2 - same shape as mine) some of the gearboxes, usually specified by plod, are capeable of 192mph @6000rpm in 5th. It's called the M56LK (I know, I got one **ahem143 in 4th ahem**

)
Pedro was telling me about another box that'll do about 195 @6000rpm.

192!? soo close! another thing for the shopping list

**T5frankie** · Tuesday 10th April 2012, 19:04

Originally Posted by t5_monkey

must be short gearing? S40 is 30mph / 1000 and runs to 6500rpm (195 theoretical)

think your doing your sums wrong mate, so your saying your car in 6th at 150mph is just ticking over?

**t5_monkey** · Tuesday 10th April 2012, 19:05

Originally Posted by t5frankie

think your doing your sums wrong mate, so your saying your car in 6th at 150mph is just ticking over?

6.5 x 30 =..... 195

5x30 = 150 mph so it will be doing 5000rpm - which I wouldn't call ticking over but still 45mph to run to the redline if you had the power.

**M-R-P** · Tuesday 10th April 2012, 19:06

Originally Posted by sundog

192!? soo close! another thing for the shopping list

That's at 6000rpm mate, I've had 7100 out of mine and you can always have the limiter moved or removed

**sundog** · Tuesday 10th April 2012, 19:10

sounds perfect! what are the limiters like on the turbo engines mines lethal if you get carried away in my n/a its like slamming the brakes on

**T5frankie** · Tuesday 10th April 2012, 19:12

Originally Posted by t5_monkey

6.5 x 30 =..... 195

5x30 = 150 mph so it will be doing 5000rpm - which I wouldn't call ticking over but still 45mph to run to the redline if you had the power.

so you are saying at 60 your car is doing 2000rpms and at 90 only 3000rpms, i think you find it won't test it when you get the chance, so you got through the 1/4 mile in 3rd gear out of 6?