I will need a fuel tanker!

[wellyone]

I will be touring the NW of Scotland at the end of this month with a gang of TVR's from the Blackpool region, so it won't be a mobil economy run! On the trip to Chatsworth last weekend my 450 SEAC returned 25 mpg being driven VERY steadily. I think I will need my own fuel tanker following me round Scotland.

I have noticed that 3000rpm in 5th gear is 75mph which seems low. Is this normal for a wedge or were SEAC's fitted with lower ratio differentials for optimum performance / acceleration?

So........ 1300 miles at say 20 mpg and £6.40 to the gallon, no wonder I can't sleep!

[Barkychoc]

Yes but what economy would you see in your 'normal' car on the twisties?
Work it out how much extra it costs over your normal daily weapon and it doesn't seem half as bad.

[adam quantrill]

The 2000=50mph ratio is normal for 350i's I think. My 400SX has a slightly longer diff so 2000=55mph (roughly). I would have thought your 450 would be in the longer camp normally but maybe the original purchaser wanted it that way?

Is this off the speedo or double-checked with GPS/Satnav?

Also you can gain or lose a few percent depending on wha tyres you have on the back and one percent between new rubber and worn out, but this doesn't show up on the speedo.

[TvR Driver]

Hey - when are you all travelling ??? We are just outside Stirling and have the central scotland tvr car club meeting on the first sunday of the month !!!

Always good to see tvrs if you are passing and we do great food ( shameless plug lol )

Ty

[Wedg1e]

3000rpm in my 390 is 79MPH off the satnav, 80 indicated. That's with 15" wheels, standard type tyres (none of this silly low-profile nonsense) amd 3.54: 1 diff ratio.

[Trickie Dickie]

I'm sure I read somewhere (Wedge Bible?) that it was 28mph per 1000 rpm

The other thing to check is your speedo as all speedos over-read for obvious reasons
although checked against the sat nav the Wedge is much more accurate than my Jag

HTH

Richard

[HOTTY]

David
If you are concerned about economy I will pop up with my 400 with should do a few more miles to the gallon but would have to swop with the seac for a week

from memory the 400 3000rpm = 80

[wellyone]

Thanks Guys, my readings were based on the speedo not Sat Nav so I will check it again using that. From all your posts I now have some data for comparison. I will keep a tab on consumption whist on the "tour" and post the reults. Perhaps I should run a sweepstake and generate some petrol money that way!

Dave

[chedder]

Be prepared for a bigger shock Dave....if memory serves, then fuel prices are higher in Scotland too!

Chedder