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Member Since 07 Jul 2013
Offline Last Active Yesterday, 09:38 PM

Topics I've Started

Superspec Speedo Over-Reading

09 October 2017 - 03:11 PM

As has been mentioned frequently on the forum the Superspec speedos all over-read, by up to 20%.  The reason is that the MT75s that Richard bought were destined for a LHD Transit and were fitted with the 22-tooth (yellow) speedo drive gearwheel.   If you do the maths, we actually need a 26-tooth gear, although one 'expert' told me Ford only went up to a 25-tooth.   However, these seem to be incredibly rare now and basically unobtainable.


Here is the offending article and it struck me that is a prime candidate for a 3D printer to produce a bespoke 26-tooth version,   Anyone know of a Company that could reproduce one of these but with more teeth ?  (The metal sleeve could probably be removed and used again)


Or should I treat myself to a 3D printer ? :)





Lincolnshire Meet For October

02 October 2017 - 11:29 AM

As previously discussed, October is when we do our annual pilgrimage to the Corby Glen Sheep Fair (https://www.sheepfair.co.uk/), It is from 10:00-16:00 on Sunday 8 October but you can arrive whenever you want and leave whenever you want.  I will probably position my car about 09:30 to book some slots.


I think most of you have been before, but as a reminder, we will be parking by the war memorial at the Western edge of the village (Shown in red).  If you are coming in from the A1 then as you enter the village, go past Tanners Lane and then take the left fork just after the funfair.   The dropped kerb is just before the first house as shown in blue on the picture.


If you are coming from the Bourne direction then drive past the cars and then turn 180 degs just before the funfair.




So far I have:


1.  Me

2.  Mick & Stella

3.  Kerry & Sharon

4.  Nigel & Helen

5.  Pete  (Swan)

6.  Derek & Mo



Anyone else ?


All subject to weather of course, although I will do my best.   (I gather I excelled at the Stamford Show, even though I wasn't there :) )



Superspec Gearbox/diff Ratios

16 September 2017 - 09:03 PM

AndyW and I have been comparing notes on our Superspecs and among a lot of other differences we have found quite an appreciable difference between our speed/RPM ratios.


For the test we both used a GPS-based Speedo, as the speedo in the Superspec is known to over read because the wrong speedo drive wheel is fitted to the gearbox


To maintain a true 60mph in 5th gear I need 2500rpm.   Andy has to maintain 3100 rpm.


(As an aside, at a true 60mph I see 66mph indicated and Andy is seeing 72mph)


We are both using the same wheels, and we assumed we were both using the same drive train, MT75 (off a LHD V6) and a standard drum brake based Sierra diff, but obviously not. 


The difference in indicated speed would lead us to believe we have different gearbox ratios (although maybe only in 5th?) but could different Diff ratios have the same symptoms ?   Or maybe a combination of both ?


 Anyone any thoughts ?  Any other Superspec owners who could do the same test ?




Lincolnshire Meets For September

06 September 2017 - 09:53 AM

This weekend is looking pretty rough, so our opportunities are:


1.  Horsepower at the Hall/Gearheads at the Ground, Sunday 17th at 13:00 at the Newrak Showground.    Hopefully this time it will be on and the weather behaves.  For those who haven't been before, this normally has a huge turnout of cars and is a good day.


2.  Pub lunch on Saturday 16th.    (Let me know if you are interested)


3.  End of Season Bash on 22-24th.


And looking ahead, don't forget our usual attendance at the Corby Glen Sheep Fair on Sunday 8 Oct.  If you haven't been before, it's a nice day out at a 'typically British' village fair.  More details to follow.



Superspec Rear End

26 August 2017 - 12:16 AM

AndyW and I are thinking of buying a complete drive train as a package of spare parts for our Superspecs.   Unfortunately it turns out the donor Superspec has the optional disc-based rear brakes whereas we both have the standard drum-based cars.   So the diff and drive shafts are of the bolt-on type whereas I think ours are the push in type  (might be wrong, not a suspension expert).   So:


1.  Am I worrying unnecessarily ? or


2.  Should we forget the back end and just take the engine/gearbox/propshaft ?


3.  If we get them, is it as simple as trying to find some Sierra rear discs  (common or rare ?,  easy swap over or difficult ?  different trailing arm setup ?)


Be grateful for any advice from the more knowledgeable of you, particularity other Superspec owners with experience of the back end.