Fuel for 4.3?

[robertp]

Just got me an early 4.3 Chim - the previous owner had been told he should run it on standard unleaded. This is my third V8 engined TVR but the first time I have encountered this(normally super unleaded/Optimax) - the car seems to run great but any comments?

[raceboy]

My 94 4.0 runs best on standard unleaded as well, tried Super UL and couldn't tell the difference, tried Optimax and after a few tankfulls it began to run like a pig and was doing about 5mpg, performance may be down slightly but real world driving it's not exactly slow
And when performance tested against a 4.3 Griff running on Super UL it only pulled away after we were well into licence loseing speeds

[shpub]

It shouldn't as the cars were originally set up for 4 star and need the octane. The lead is not an issue.

Covered in the bible and the Unleaded FA on my web site. www.tvrbooks.co.uk

Steve

[ssc1]

well i seem to go the other way ,i have an early 4.3 chimaera and running it on standard unleaded makes it a bit wooly ,smoother but slightly down on ooommmfh .but on optimax it is nice and angry ,well it feels sharper and as though there is more pull,and as for a 4.0 keeping up with me i have to say no way ,from 0-160 i have blown a 4.0 into the gutter ( maybe somone off here) ,so i should say that in my experience optimax feels better than standard ,it should not make the car run worse ,as it is only petrol with an adictive......ian....

[raceboy]

Well alls been fine in the 3+ years it's been running on low fat unleaded, just dug this up from when I tried Optimax
www.pistonheads.com/gassing/topic.asp?t=14057&f=8&h=0

[the dodger]

ssc1 said: well i seem to go the other way ,........,as it is only petrol with an adictive......ian....

I've been adicted to petrol for ages.

[chim450]

It actually says next to the petrol cap on my 450 to use super unleaded only. Do all later Chims have this message? or just the 450s and 500s?

[shpub]

All the Chims have it. You can even buy spare stickers - it has an official part number.