fiestaturbo.com

[trustzetec16v]

What top speed are people getting in their 2 litre zetec si's? Just wondering cos i can only seem to get about 125mph on the clock. Only tried once though. Thats with a fiesta rst box.

[fiesta_fras]

my rs1800i engined fiesta only gets 122mph on GPS

indicating over 125 on the speedo thou

mine has too much ICE thou i suspect

mine is running about 140 bhp

[DR1984]

Fras thats bout right.

Quickest i got my RS1800 is 133 on the clock, there usually out by
a few mph. Thats with standard engine jus zaust and air induction
upgrades.

HTH

DR1984

[Mav Singh]

got 1.6si with k&n kit and full magnex, me and 2 others in the car comming back from london to coventry on M40 top speed 132mph, on the stretch where the motorway seems to cut through a mountain/big hill. revs were at 6300 odd. im sure it 7000rpm was hit 140mph would be possible

[Stoned]

lol?

132mph out of a 90bhp car

get real!

Speedo's overread by about 10-15% anyhow over 100 so it's more likely you were doing something between 115-120

[Sphinx]

got 1.6si with k&n kit and full magnex, me and 2 others in the car comming back from london to coventry on M40 top speed 132mph, on the stretch where the motorway seems to cut through a mountain/big hill. revs were at 6300 odd. im sure it 7000rpm was hit 140mph would be possible

I'm guessin ur speedo is *slightly* out, no offence, i got an Si and dont think it'd reach that kinda speed @ all

[Sunil_FiestaRS_16V]

i had my old rs1800 lump off the clock. probably only doing 125 odd though. havent tried my new lump yet as i have to run it for 1000 miles and then i still have to bring it up gradely after that.

[AndyRS1800]

mine was showin 135mph on the clock... sumthin wrong there i think... they are rs turbo dials...

[butler_29]

i got 125 out of my 1.8 Dezil

[18rs]

got a black top 20ltr zetec with uni chip, jr filter, scorpion, got it off the clock at 140, doing 6150 and still pulling prob only 125 though it should touch 135 !

[Ben_frst]

got a black top 20ltr zetec with uni chip, jr filter, scorpion, got it off the clock at 140, doing 6150 and still pulling prob only 125 though it should touch 135 !

20ltr 300mph me thinks

[Mav Singh]

yea i thought the speedo might not have been accurate but my mate confirmed it by staying right next to me for a good few seconds in his 350Z nob then accelerated past that speed making me look as if i slammed the brakes on. was impossible to catch up with him, unless i perform some kind of harpoon/grappling hook mod to the front of the car, then next time he will never be able to loose me

[beanyfrst]

I have had 134 mph out of my FRST
Thats with a full s/s zorst and k&n

[Project]

Err, Mav, your redline (6,750ish) is around 120mph.

No offence to your speedo, but I think it might be a *touch* out

[Matt L]

Havent seen my top speed since i got my engine in as the speedo cable broke when they put it in so dials dunt work
Got 95 out of my old 1.1 if that helps

[Mav Singh]

Err, Mav, your redline (6,750ish) is around 120mph.

No offence to your speedo, but I think it might be a *touch* out

thats what i thought but then again iv got a new gearbox on which has altered ratios for 1st and 5th gear. also u mention the redline?? odd, when i floor it the revs shoot past the 7k mark off the scale. a tuning centre took a look at it and said it was revving to 7250rpm. not sure why or how? any way i can find this out?

[Excursion]

(1) 1997 S2 2.0 Zetec (8000 miles) & Si gearbox - 125MPH redlined at 7200

(2) 1998 S2 2.0 Zetec (16,000 miles) & Escort GTi IB5 - 140MPH

(3) 1999 S3 2.0 Zetec (250 miles) & Escort GTi IB5 - 140MPH

(4) 1999 S3 2.0 Zetec (250 miles) & Escort GTi IB5 - 145MPH (FRST Clocks)

[trustzetec16v]

do u think it's maybe the fiesta rst gearbox thats holding me back then, because it's not getting past 125mph, and it doesn't even seem to be trying - ie the revs are just around 5000 rpm......?????

[Mav Singh]

i noticed that in me car if i got it floored in 5th gear and i am going up an incline the top speed seems to stop at around 5000-5200rpm and speed will not increase until the ground becomes level or downhill. i hear that this is something to do with torque. how can the engine be made to produce more torque at higher rpms?

[Stoned]

NOS will do the trick. But the fact is petrol engines below 1.8 without a turbo just dont really have a lot of torque.

[LeeM2]

I've had my FRST up to 137... well on the speedo! LOL

[chumkila]

do u think it's maybe the fiesta rst gearbox thats holding me back then, because it's not getting past 125mph, and it doesn't even seem to be trying - ie the revs are just around 5000 rpm......?????

what ECU are you also running? has it been chipped or not?

[simon16v]

XR2i 16v, MAX it can do is 140 [ERRR] it will hit the limiter. Power engineering showed me this on the rolling road. RS1800 gear box has THE same ratios unless modded with different wheels and ratios. Dunno bout the turbo. If u know u have a decent clutch, use your rev counter as a guide to how fast your going. I got it to just over 6500 revs. So i was in the area of 130. On a pivate road of course

[Phil Si]

Was about to say, its the gearbox....

Mosta 1.6Si box will do is 120ish... no matter what engine lol...

Just gets there faster

[Mav Singh]

ok had another london trip so i thought id give it a short bash this time i checked the speedo and rev counter to see what the colaboration is. well it was doing 120mph at around 5200rpm (5th gear). one good thing is iv got a lot more economy on the motorway from the car since i had the new gearbox done. odd thing is we got a 1.6 escort si and that generally seems to be better on fuel as the fiesta. is there a difference in the escort and fiesta si engines?

[snake]

no diff in engines, diff is the box ratios on escort 16v is longer, lower engine speeds when ur cruisingl, thus less fuel used.