200 mph 850?

**p fandango** · Thursday 12th April 2012, 13:36

Originally Posted by martinrpeachey

And running off a lethal mixture of alcohol and nitrous oxide

- and that's just the driver

i'm disgusted you think i'd waste Nos by inhaling it lol

Originally Posted by PaulZX

I volunteer myself as test pilot, if you wanna prove that pedro....

you wouldn't be saying that once you've seen the state she's in now lol. I was in Skeg Vegas last weekend, your alright for fish & chip shops & mini-golf there aren't you lol

**Al115** · Thursday 12th April 2012, 13:36

Originally Posted by popuptoaster

I have friends who are trying to get a Mk1 Escort to 200mph, 450ish bhp takes one up to around 185mph, they have mates who took a Sierra cossie up to 214mph, it needed 800bhp, the door mirrors taking off and all the panel gaps taping up with gaffer tape.

http://www.youtube.com/watch?v=Gvkk7GENhHk

That guy is brave to run 200mph without so much as a crash helmet!!!

**sundog** · Thursday 12th April 2012, 16:50

i have been looking at that sierra some of the other videos with it struggling to get any traction to accelerate turns me on slightly!

surly the dca of the volvo 850 cant be that much worse than a sierra

certainly better than a 740!

anyone know how to work out drag?

**M-R-P** · Thursday 12th April 2012, 16:56

Yeah, skirt + adam's apple + leg hair = drag (or french bird)

**sundog** · Thursday 12th April 2012, 17:11

the car in question complete with monster car stance, on another note them poly engine steady's are pretty hard! my whole dash rattles when(if it wants to) at idle

couldn't help day dreaming on my way home from work about a home brew wind/smoke tunnel

**stephenevans99** · Thursday 12th April 2012, 17:41

Originally Posted by sundog

anyone know how to work out drag?

Try this website:

http://ecomodder.com/forum/tool-aero...resistance.php

Although just looking at it gives my humble brain a rupture !!

**popuptoaster** · Thursday 12th April 2012, 17:52

Sierras are quite slippy, and the 2wd Saph was the lightest cossie version, 151mph wasn't bad from just over 200bhp. The granny cossie with 195 bhp only managed 135 to 140mph depending on who you believe.

You have to take into account airflow is different at different speeds as well, I dunno what speed manufacrurers work out drag, I know Ford say the droop snoot mk2 RS2000 is more aerodynamic than a mk1, but our guys found that the mk1 needs less power than the droop snoot to hit higher speeds so something happens at 150mph plus.

They suspect the flat front builds up a high pressure "bubble" and the air slides round it and up the more sloped bonnet while the droopsnoot cuts through better but the flatter bonnet makes it work harder at high speed.

The rear of a mk1 also tapers in more than a mk2 does.

**sundog** · Thursday 12th April 2012, 17:56

i guess sierras front end is at a slight angle compared to the perpendicular front end of the volvo. but that sierra had no use of flat flooring a splitter which are in the picture i see in my head

**Flatout Phil** · Thursday 12th April 2012, 18:06

Originally Posted by Kingsford G

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

Or fit gigantic tyres

**sundog** · Thursday 12th April 2012, 18:08

Originally Posted by Flatout Phil

Or fit gigantic tyres

wheel clearance cut out to the rear window ftw!

**T5frankie** · Thursday 12th April 2012, 18:23

19's give a longer ratio by quite a bit

**stribo** · Thursday 12th April 2012, 18:32

Originally Posted by popuptoaster

Sierras are quite slippy, and the 2wd Saph was the lightest cossie version, 151mph wasn't bad from just over 200bhp. The granny cossie with 195 bhp only managed 135 to 140mph depending on who you believe.

You have to take into account airflow is different at different speeds as well, I dunno what speed manufacrurers work out drag, I know Ford say the droop snoot mk2 RS2000 is more aerodynamic than a mk1, but our guys found that the mk1 needs less power than the droop snoot to hit higher speeds so something happens at 150mph plus.

They suspect the flat front builds up a high pressure "bubble" and the air slides round it and up the more sloped bonnet while the droopsnoot cuts through better but the flatter bonnet makes it work harder at high speed.

The rear of a mk1 also tapers in more than a mk2 does.

The Grannies only came with the power sapping auto transmission though, which didn't help.

**popuptoaster** · Thursday 12th April 2012, 18:46

Originally Posted by sundog

i guess sierras front end is at a slight angle compared to the perpendicular front end of the volvo. but that sierra had no use of flat flooring a splitter which are in the picture i see in my head

To be honest I dont know what he did underneath it, I do know it wasnt just a matter of bunging in a high power engine.

Originally Posted by stribo

The Grannies only came with the power sapping auto transmission though, which didn't help.

True, but it did have a lock out top gear and I had one converted with a proper v6 MT75 Manual box (thats the one that went into my Cortina) and it would only ever read 145 on the speedo which was probably closer to 130mph.

**smithy** · Thursday 12th April 2012, 20:09

Originally Posted by sundog

the car in question complete with monster car stance, on another note them poly engine steady's are pretty hard! my whole dash rattles when(if it wants to) at idle

couldn't help day dreaming on my way home from work about a home brew wind/smoke tunnel

thats a mk1 850 i had 1 of those with a 2.5 20v on a 2.0 20v box very quick car mate.mine was an estate though.

**sundog** · Thursday 12th April 2012, 20:12

yeah so far i've learnt there really hard to get headlights for haha.

mine was fairly quick but it seems to be dying

it used to go to the end of the speedo now it wont go past the 100 marker, its only done 100k regularly serviced new cam sensor etc. but never mind as soon as i get a run around it can be stripped and consume all of my spare time

**T5frankie** · Thursday 12th April 2012, 20:15

funky big button interior too lol, is it blue dash?

**sundog** · Thursday 12th April 2012, 20:18

narr all beige! absolutely awful!

**LiamT4** · Thursday 12th April 2012, 21:41

Originally Posted by t5_monkey

Sorry to be a geek but it's Cda (coefficient drag area) you need rather than just the Cd.

BMW is a big car, so although slippery there's more of it, so it needs more power.

and IIRC It's 29.8mph/1000 for the S40.

http://www.roadandtrack.com/content/...40-T5_data.pdf << full data sheet

I really doubt a t5 will do 200mph with less than 500bhp.

Originally Posted by popuptoaster

I have friends who are trying to get a Mk1 Escort to 200mph, 450ish bhp takes one up to around 185mph, they have mates who took a Sierra cossie up to 214mph, it needed 800bhp, the door mirrors taking off and all the panel gaps taping up with gaffer tape.

http://www.youtube.com/watch?v=Gvkk7GENhHk

Thats the one i'm talking about.

Originally Posted by AndysR

Yes, the same guy did some calculations for an 850 and said it would require slightly less power for the 850 to do the same

But what power was the cossie running to first crack 200mph? In the above vid its running nearly 800bhp, but past 200mph with ease.

**Wobbly Dave** · Saturday 14th April 2012, 14:51

I've kinda stumbled on this - and I have to say this is the single most pointless thread ever.

**p fandango** · Saturday 14th April 2012, 15:12

Originally Posted by Wobbly Dave

I've kinda stumbled on this - and I have to say this is the single most pointless thread ever.

you didn't have to say anything, i manage to click on another thread if the current one i'm reading has no interest to me. I'd of thought working with computers you'd be able to do the same