fuel question

[abarth78]

what type of fuel do u use??

[Burns]

the stuff out of the pumps

 

retro ford magazine did an article about this this month, which petrol's better than which, although i imagine you don't have the same brands as we have?

[dragaddict]

the normal is allways better for power but its easy for detonation

[abarth78]

yes i use torco at the moment.....

i was wondering what you guys use over there.....

[LEONMEX]

Best stuff out of the pump here is Shell v-power which is 102 octane i think,normal out of the pump unleaded is 95-98 octane. The Torco is race fuel i think??

[abarth78]

yep it is it varies from 104 to 120+

in fact i had a problem with it i was given a 114 octane for my engine and i couldn`t do a good run on it ...

i had to mix it with normal fuel to get some more power cause it was too much of an octane rating for my engine

[LEONMEX]

We have octane boosters in a small bottle that you mix with the fuel that adds +2 octane. To much octane is not always good then??

[Mk2Jo]

Shell V Power is only 98 RON sadly Esso, BP and Texaco super is 97 RON i believe

 

The V Power that is sold in parts of Europe is 102 RON but we don't have that from the pumps over here unfortunately.

[abarth78]

no its not good cause the higher the octane is the longer it takes to burn...

taht is one of the reasons that you can give it more timing

[RETRO_AL]

shell optimax is the best,its better than the higher rated ron that tescos and others sell

[LEONMEX]

Would'nt use supermarket petrol in the old girl retro,it would be like drinking alcohol free value lager

[jimmyesh]

shell optimax is the best,its better than the higher rated ron that tescos and others sell

 

Hasn't Shell V-power superceded Shell Optimax?

 

Think it was just a name change

[dragaddict]

i use VP and it's got hi octane.on my cos i use VP but when i had 21 pinto with nos i used pump gas it ran faster & more power full.

[Guest HPEjadey1]

we find no power difference between vp , sunoco,bp 102, v power but do use vp due to various timing setting's

[dragaddict]

with pump fuel you have to retard more the engine & on racing fuel play more on tming, fuel & gives you a chanse to risk more

[Copey]

have used v-power in mine, but it was well busy one day and put tesco high octain in, wasnt any different, but the sound of detination...

[dragaddict]

it depends on a std or semi race engines only pump gas is good for better power

[texr2000]

I got a Shell Station just up the road and use V-power in both my cars, the guy who built my engine said to use hight octane in it so thats what i use. 102.9p - 104.9p make it a bit expencive now days tho...

[Toby]

Fuel octane, compression and timing are all interrelated in my limited understanding of the subject. With more octane you can run more compression and timing. This will help a highly tuned race engine more than a street motor because the cam timing (usually long in a race engine) adversly affects the effective compression ratio due to the inlet valve being wide open on the return of the piston up the bore on the compression stroke. Ooops. I think I may have gone off on one!

[texr2000]

I don’t really understand it ether... helps on turbo cars I believe allows them to run higher boost?? Due to the way it burns or something

 

Did learn about it at college but I cant remember

[Toby]

I don’t really understand it ether... helps on turbo cars I believe allows them to run higher boost?? Due to the way it burns or something

 

Did learn about it at college but I cant remember

 

Higher boost is higher effective compression. Higher octane can tolerate this higher compression without detonating.

[deltamal]

Always use the 97 octain in mine, it dosen't like the 95, got 12.5:1 comp.

[dragaddict]

on my cos i run hi octane vp c16 its very hi on octane & expensive,but i use it for racing

[Toby]

on my cos i run hi octane vp c16 its very hi on octane & expensive,but i use it for racing

 

Cheeper than pistons!!

[dragaddict]

of course its cheeper than pistons especialy when boost comes in