philwaters Posted September 13, 2002 Share Posted September 13, 2002 Hi all, Is it possible to change just the 1st, possibly the 2nd, gear ratios in my type 9 5 speeder? I find the standard 3.65 first is way way too short with the Zetec now but can't afford a full gearbox from places like SPC. Therefore the gears need to be fully helical to match what I have. Are there a good choice of ratios availiable? Where from? Is it something I can do myself? I don't know the internal layout of the box but I guess to change 2nd as well might involve a lot more work than just 1st - is this right? Phil Waters General Dog's Body Whippet Racing 😬 Link to comment Share on other sites More sharing options...
Joe 90 Posted September 13, 2002 Share Posted September 13, 2002 There used to be outfits that would machine and weld up non-standard gearbox shafts, but I don't know if they are still going. Have you considered the semi-helical close ratio set that came out a while ago? Road and Race transmissions over them, at £1000 IIRC. 99,000 miles so far Link to comment Share on other sites More sharing options...
philwaters Posted September 13, 2002 Author Share Posted September 13, 2002 Hi Oliver, Yeah the semi-helical kit is very nice and I have driven a couple of cars with them fitted. Unfortunately I can't afford one of those as I am swapping to a Ford axle this winter already. Was just wondering if it is possible to just swap individual ratios... Phil Waters General Dog's Body Whippet Racing 😬 Link to comment Share on other sites More sharing options...
Graham Sewell Posted September 13, 2002 Share Posted September 13, 2002 Try talking to Burton Power on 020-8554 2281. I noticed that they spend 4 pages of their catalogue on gearboxes, os they may be able to help. Low tech luddite - xflow and proud! Link to comment Share on other sites More sharing options...
V7 SLR Posted September 13, 2002 Share Posted September 13, 2002 Brian Hill will alter your own gearbox for you if you're prepared to wait a week. His contact details are on DVA's web site. Worcs L7 club joint AO.//Membership No. 4379//Azure Blue SLR No. 0077//Se7ens List Tours Link to comment Share on other sites More sharing options...
philwaters Posted September 13, 2002 Author Share Posted September 13, 2002 Thanks Nigel, I'll give him a call, see what he can offer. When are you going to fit those cams....? Phil Waters General Dog's Body Whippet Racing 😬 Link to comment Share on other sites More sharing options...
EFA Posted September 13, 2002 Share Posted September 13, 2002 Phil, You'll get a decent used Quaife box for around £500. Just don't buy it from the guy Aves got his from..... Fat Arn Visit the K2 RUM website See the Lotus Seven Club 4 Counties Area Website here Link to comment Share on other sites More sharing options...
philwaters Posted September 16, 2002 Author Share Posted September 16, 2002 Cheers Arnie, I did think about this, but I don't want a straight cut due to the noise factor. I don't think I would find a semi-helical for practical money either. Spoke to Brian Hill on Friday and he'll do me a longer 1st and second in my box, fully helical (2.66 or 2.75 1st and 1.75 2nd) for between £400 and £500 depending on the state of my box. What do you think of those ratio's for a road going, 160bhp, 146ft lb 2lt Zetec with a 3.9 diff? Something to ponder.... Phil Waters General Dog's Body Whippet Racing 😬 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now