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Vernier Pulleys? : Tuning / Handling / Braking | Fiesta Forums

Vernier Pulleys?

CVH and Zetec tuning, suspension and braking mods.

Vernier Pulleys?

Postby LeeM2 on Fri Nov 21, 2003 6:05 pm

I have a FRST running an estimated 150bhp @ 0.6 Bar (bout 8 psi).

..With lightened fly wheel, uprated actuator, Cvh35 Kent Cam, K & N Panel filter and a Magnex full system.

What should I look to get next to improve my performance? I don't really want to chip it though.. I'm thinking along the lines of a Vernier Pulley but i don't really know what these are (lol).

Can someone please help... Will a vernier pulley improve the performance of my car or do I need to be looking at a different mod?

Your help will be much appreciated ;-)
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Postby snake on Fri Nov 21, 2003 6:35 pm

u need a chip, u aint gettin full benefits of the mods at the mo, and yup u [ERRR] run a vernier with that cam anyway to get the best out of it.
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Postby RJS_SCORT on Fri Nov 21, 2003 7:35 pm

Get A 195 Superchip And Beige 701 Injectors
Thatll See U Between 180- 200 bhp
CheeRS
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Postby Fezzy Turbo on Fri Nov 21, 2003 8:32 pm

Dont use a 195 Superchip ..................... get a mapped chip specific for your car if your wanting that much power.

You dont say if you have uprated the turbo or intercooler ??
Greg : Owner of a FRST for 14yrs

2009 FRS2 : 377bhp ATW / 395lb/ft :)
1990 FRST : Sold.
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Postby heeman10 on Fri Nov 21, 2003 8:54 pm

Vernier pulleys allow you to fine-tune the ignition timing AFAIK :) At least that's what I assumed after seeing a close-up photo of one in a magazine once! :lol: :rolleyes:
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Postby PaulC on Fri Nov 21, 2003 9:03 pm

heeman10 :fine-tune the ignition timing AFAIK :)


I'm in a picky mood! Its the valve timing it adjusts :wink:
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Postby DaveZetec on Fri Nov 21, 2003 9:42 pm

If i have been correctly informed, you should definitely be using some sort of adjustable pulley on any aftermarket cam, as they very rarely grind the end dowels bang smack on the right angle, and timing the cam up on the belt give you 2 or 3 degree adjustments only.
Also if the heads been skimmed, this will bring the pulley closer to the crank pulley, effectively bringing the belt round 1mm or however much the skim was.

I will point out that this is all taken from what I have studied on the net, I wont try and make out like I've got experience in this, I just read a lot :lol:
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Postby heeman10 on Sat Nov 22, 2003 1:52 pm

PaulC :
heeman10 :fine-tune the ignition timing AFAIK :)


I'm in a picky mood! Its the valve timing it adjusts :wink:


:rolleyes: Be as picky as you like...who the feck adjusts timing via the cams? :lol: Je suis un dumbass :oooh:
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Postby heeman10 on Sat Nov 22, 2003 1:52 pm

PaulC :
heeman10 :fine-tune the ignition timing AFAIK :)


I'm in a picky mood! Its the valve timing it adjusts :wink:


:rolleyes: Be as picky as you like...who the feck adjusts ignition timing via the cams? :lol: Je suis un dumbass :oooh:
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Postby nosworth on Sun Nov 23, 2003 9:44 pm

verniers help to dial out overlap on turbo'd cars,especially usefull if u have aftermarket cams..And too much overlap is a very bad thing power wise..
Fear is standard brakes
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Postby Jur on Mon Nov 24, 2003 1:29 pm

I got some info of Ahmed bayoo's.. for my Fiesta.

For my T3 fiesta with almost the same specs he recommended me:

spec-mapped chip : 250 quid
uprated fuelpump (cossie)
beige 701 injectors
uprated fuel-pressure regulator (cossie)
Bigger intercooler (to run higher boost)
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