[car_overhaul] Zx 16V Project Pt2, Re-Shell And Power Upgrades....

[welshpug 1,621]

there is no plenum for a good vac signal to be taken from so its mapped on a flat 3 bar fuel pressure.

[Plumbob 66 1 Cars]

Cheers, that explains it.

[johniban 59 1 Cars]

Think that was on mine Jonathan, i cant use standard one as omex ecu cant run 8 injectors and i don't think you can use the standard one on a jenvey rail, and id already purchased an adjustable one so sticking with it for now,

[dcc 855]

I cant emplore you enough to ditch it

[johniban 59 1 Cars]

I can't see it's going to cause a problem if the adjuster isn't touched and it's not plumbed into the vac it should just stay at the set pressure, same as a fixed

[Tom Fenton 1,524]

Yep it SHOULD stay at a fixed pressure in theory, but in practise it's s lump of utter garbage, and it won't. But if you know differently, crack on.

[Sandy 189]

Fixed pressure Weber or Bosch reg is strongly advised. I have seen engines destroyed by loss on fuel pressure on track, going un-noticed; up to 1 bar (about 15% leaner) when hot, is not unusual and they are often less repsonsive to transient surges too.

[Anthony 1,000]

1 bar difference?! Crikey, I knew that they could drift but I had no idea that it was by that sort of margin!

[welshpug 1,621]

minor update - MOT ran out end of October so its been off the road whilst I tinker with a few bits, namely welding the exhaust and making pattern part tat actually fit properly, its quite shocking how crap the fit is!

New bushes on the bottom of the rear dampers, lifted the ride height a little on the back, swapped the bottom engine mount for a fairly fresh standard one but filled the voids with PU adhesive.

Annnddd managed to trace down a very reasonably priced genuine bosch fuel pump on teh bay of E all the way from Latvia, the walbro unit only lasted 3 months and left me stranded in west wales, not amused with that one!

MOT booked for later today

[welshpug 1,621]

one thing I love the SL434's for is that they are proper competition wheels for cars that used the same front end architecture (hub carriers drive flanges etc) , and thus they have quite epic brake caliper clearance radially....



20150919_193222 by WELSHPUG, on Flickr


20150919_193143_LLS by WELSHPUG, on Flickr


that's a Renaultsport Brembo caliper from the Clio 3/Megane 2 over a 310mm rotor on an alloy bell, with NO spacers granted there's bugger all clearance to the top corners where the nipples are, so I will run a small spacer to add a margin, but I am very pleased with that

[Anthony 1,000]

That's pretty impressive that 4 pots with a 310mm disk just about squeeze underneath a 15" wheel without any modification or spacers!

 

Is that setup not somewhat overkill for an ~1100kg odd ZX that's primarily a road car though?

[dcc 855]

Yeah its way too overkill.

[welshpug 1,621]

well they are off a 200 bhp 1200kg renault, and its a 200ish bhp 1150 kg citroen with slightly smaller discs, so maybe, maybe not.

 

They are lighter I believe.

[wicked 103 3 Cars]

I run the same brakes (normal brembo discs and pads), but mine have started to squeal... Are yours silent?

The extra brake power is an improvement, not overkill...

[welshpug 1,621]

mine are not on the car yet, but a friend has some on his 306 under a 15x6" Compomotive MO and a 10mm spacer, no squealing from his one either.

 

which discs and brackets do you use?

[calvinhorse 870]

I love the squeal! Proper brakes squeal.. Race cars squeal.. Pigs squeal.. And who doesn't like bacon!?

[welshpug 1,621]

someone who doesn't eat meat?...

[S@m 156]

That explains the sudden availability of Girling calipers!

[welshpug 1,621]

nooo, they've been on the shelf for ages, its still using the gti6 lucas brakes I'm moving house soon and reducing the pile of tat I don't need!

[roland rat 11]

nooo, they've been on the shelf for ages, its still using the gti6 lucas brakes I'm moving house soon and reducing the pile of tat I don't need!

Does that mean your scrapping the ZX? Haha!!!

[welshpug 1,621]

touche!!

 

new mot, taxed again.

 

love driving it when it works, hate driving it in town from cold! soon sort that by moving to Cardiff and biking to work.

[roland rat 11]

To be fair it's a cracking car mate just needs painting or wrapping now

[wicked 103 3 Cars]

mine are not on the car yet, but a friend has some on his 306 under a 15x6" Compomotive MO and a 10mm spacer, no squealing from his one either.

 

which discs and brackets do you use?

 

Brembo pads and Brembo 302mm discs (307cc 2.0 hdi).

They only squeal on light breaking... Bit annoying in traffic... Not annoying enough to ditch the calipers btw...

[welshpug 1,621]

not surprised, they are a bit narrow at 26mm, you need 28mm discs.

To be fair it's a cracking car mate just needs painting or wrapping now

 

that's the plan! but either one means £££ :/

[wicked 103 3 Cars]

But the pistons would sit at the same level as compared with 28mm discs and 1mm worn from the pads?