Lead Replacement and MPG

[oneshortplanck]

Hi all,<br>
<br>
I have a 1500TC and drive 30 miles to work at 39-40 MPG (40 mins at 50 mph all the way) is this typical milage?<br>
<br>
and also i have noticed redex have introduced a 2 tank bottle selling at at £5 a bottle.<br>
im sure the last time i bought some it was £5 for a 4 tank bottle!<br>
Is it me or have they slyly put the price up?<!--EZCODE EMOTICON START :evil --><img src=http://www.ezboard.com/images/emoticons/devil.gif ALT=":evil"><!--EZCODE EMOTICON END-->

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[davepoth]

That's pretty good mileage for any 1.5 engine, let alone a 30+ year old one.

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[Leeds Sprint]

I get 35 mpg in my 1850. But thats on motorway only miles. So you must be doing pretty good.<br>
<br>
Chris

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[algtj]

My 1500 is pretty good on the go go, however I've never been bothered to calculate it though. <!--EZCODE EMOTICON START :D --><img src=http://www.ezboard.com/images/emoticons/happy.gif ALT=":D"><!--EZCODE EMOTICON END-->

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[alun n]

Buy a Jensen and run it for a while...any mpg after that is fine, just fine<!--EZCODE EMOTICON START :D --><img src=http://www.ezboard.com/images/emoticons/happy.gif ALT=":D"><!--EZCODE EMOTICON END-->

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[Leeds Sprint]

I guess I have too much time on my hands. But I was intrested in getting an accurate idea of fuel economy to use as an indicator on engine performace. As my 1850 is my daily runner, I wanted to burn as little fuel as I could.<br>
<br>
When I got my 1850 I was only getting around 23 MPG. After some improvements to ignition, timing, carbs etc I now manage the 35mpg I mentioned earlier in the thread. <br>
<br>
I plan to uprate the induction and exhaust next year in an effort to improve performance. I will check the fuel economy again when the work is complete (1850 sport exhaust and some sort of freeer air intake. <br>
<br>
Any guesses as to what I can expect as far as changes in fuel economy? <br>
<br>
Thanks<br>
<br>
Chris<br>
<br>


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[davepoth]

Economy won't go up that much. the exhaust should give you a bit more poke, which will help, but if you have a freeer air intake you need richer needles, which will burn more fuel so that gives only a small improvement.

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[Jon Tilson]

to have totally standard induction on my Spit 1500...like it came from Canley.<br>
As these all do, the exhaust flange finally gave up the ghost stud wise so I went for the Triumph tune 4-2-1 setup and straight through twin silencers. Needed new needles too. (richer). Sounds great and goes like a bomb.<br>
It used to do 280 miles on a tank...bang on 40 mpg.<br>
I havent got more than 230 since the mods.<br>
<br>
So the Jonners principal is this...<br>
<br>
If it goes faster and makes more noise it will do less mpg...<br>
<br>
Jonners

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