Richard Price

having looked at the other SVA tread I'm confused. My kit is scheduled for delivery at the end of next month, but which test do I need to apply for, "Standard" or "enhanced" i've looked but at "www.roads.dtlr.gov.uk/vehicle/sva/sva4/index.htm" but I still don't understand. Can any one with recent experience help? Edited by - richard price on 13 Jan 2002 16:25:19 Edited by - richard price on 13 Jan 2002 16:29:40

Mike, You have mail.

Mike, I've been trying to make the same decision. These are the ratios I've been looking at:- 1st 2nd 3rd 4th 5th 6th standard ratios 3.36 1.81 1.26 1 0.82 caterham 6 speed 2.69 2.01 1.59 1.32 1.13 1 QUAIFE Race 2.04 1.54 1.21 1 0.87 QUAIFE Race low top 2.04 1.54 1.21 1 0.93 QUAIFE Rally 2.39 1.69 1.21 1 0.87 QUAIFE Rally low top 2.39 1.69 1.21 1 0.93 QUAIFE Rally/Race 2.2 1.54 1.21 1 0.87 QUAIFE Rally/Race low top 2.2 1.54 1.21 1 0.93 I've decided that for my proposed 1.6K 6 speed is the best way to go. If you're a 123 user, I have a spreadsheet with these various ratios, final drive ratios and wheel and tyre size, but it doesn't copy into Excel very well. Edited by - richard price on 7 Nov 2001 10:33:58 Edited by - richard price on 7 Nov 2001 10:34:57

Whilst trying to spec. my 1.6K Roadsport Seven, I am looking at the Caterham Lightweight Flywheel at £180 and wondering if I should specify one of these, or one from any other source. How light is the Caterham Lightweight Flywheel in comparison to the standard one and how much lighter could I go and at what cost? Is a Lightweight Flywheel good value for money. I understand that the apparent weight of the car (to the engine that is) is less and so acceleration is better in 1st gear and that this effect is reduced in each higher gear. Also that less rotating mass and so inertia should improve gear change speed. But, what Flywheel should I choose?

James, Yes, it's the standard Dedion diff.

James, Yes, it's the standard Dedion diff.

Gentlemen, Thanks for the advice, but I reiterate that I would like to do the job myself, and whilst I am not a motor mechanic, I do work in an engineering environment and understand the need to work to close tolerances and am not frightened by any thing I've heard so far. What I do need is detailed instruction on the required procedure and as I stated originally, the Haynes manual offers no such help. Where can I find this procedure?

I am considering fitting a Quaife ATB LSD and perhaps a change of final drive ratio as a retro fit and would like to carry out all of the work myself. However, the Haynes manual for the Sierra diff. Says:- "Overhaul of the final drive unit requires the use of several special tools and fixtures that are not normally available to the home mechanic" Not very helpful ! I may be able to put my hands on (or even make) suitable tools, if I knew what was required. What tools are required and what is the procedure to rebuild the diff. unit?

"Road and Race modify the ramp angles and preload from Caterham supplied units to be suitable for the Seven rather than for the original Ford application." Why are the "Ford" settings not suitable for Caterham applications with the ZF type? What experience does anyone have of Quaife ATB's?

This is likely to be the first of many postings!! I am on the verge of ordering the core bits for my first Seven, but the question is "What bits"? I don't think I can justify the expense of all new parts (considering crap standard 5 speed ratios and high 6 speed costs), so this raises the question, "how many used parts can I use, and where do they come from"? Are all 1.6 K series the same? What do I need to look for whilst visiting breakers yards? Sierra diff., what do I need to look for? Drive shafts. Are they Sierra ? If so, what model and age? Is there a database of the none Caterham parts original homes?