Hi, My H4, was supplied by Old Q as a Kit-in-a-box based on an RS1800 but sourced from Ford Industrial using an 1800 Zetec of nominally the same spec but with Escort ECU and wiring harness and 14" wheels. I now have 165 60 R15 tyres fitted, the choice having been made based on calculations such that the change from 45 profile 14" wheels to 60 profile 15" wheels corrected the gearing for the ECU expectancy for the final drive ratio with regard to road speed to engine speed ratio.
My speedometer is now 'spot on' across the speed range c.f. a GPS system. This combination has given improved low speed torque (pulling strongly from 800 rev/min in 5th), excellent road holding, improved fuel economy and greater road comfort. It does however require 11 mm wide steering rack limiters on each side such that the turning circle is seriously compromised along with some heavy fettling of the inner side of the front wings and the plastic inner panels but this is necessary to avoid chassis crash on full lock. At the rear I inserted a 40 mm spacers at the axle end to get the lower spring retainers away from the tyres and this miraculously levelled the car at the same time. There have been no ill effects after ~ 7 years. I now have no problem of clearance with sleeping policemen whereas previously grounding was not unusual. Hamish -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Andrewow47 Sent: 10 June 2012 15:48 To: Quantum Owners Group Subject: [Quantum Owners] Quantum H4 Suspension/Wheels/Tyres Hi I have recently purchased an H4 and will shortly be joining the owners club. My question concerns suspension wheels and tyres. The car has a 1.6 zetec engine and is based on a 1995 Fiesta so guess this is a Fiesta Mk3.5 but I am not sure. The tyre size is 16/215/40 which just seems too wide for the car, they are virtually projecting beyond the wheel arches and the rears rub the arches over bumps. I don't know what the suspension set is but the front ride height seems on the high side and the rear is a bit low and the rear suspension seems firm to say the least! In fact it really is spoiling the car on normal roads, on the plus side it corners like a go-kart. I have read that the 'factory set up' was standard 1.6 Fiesta suspension on the front and 1.1 on the rear, I have do to something to improve the suspension as a matter of priority,I was thinking about just buying some standard 1.1 springs/shocks for the rear and taking it from there. There are also a fair number of alternative suspension manufacturers such a spax, koni etc. who sell lower/stiffer/adjustable alternatives and I don't know if this would be better? Also any guidance on wheel sizes/offsets and tyre sizes would be very much appreciated. -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s).
