how much to the gallon?

[tom28]

hi all, recently put 1700xflow in me car, had it setup at company me dad works for, but me esky just drinks fuel, its 1700xflow, big valve head, fast road cam, twin webber 40s, 4 branch, etc, im not even getting 20 to the gallon more like 10-15maximum..

 

is this normal or is it best to put her on rolling road?

[texr2000]

sounds like mine

[Fishtailparka]

Mine certainly did more than that, but it was also easy to make it do less if I wanted to.

[Mk2Jo]

Mine is 2.1 pinto with twin 48's and I get around 20/25 I reckon to the gallon

[tom28]

even in 5th it sounds like it revs high, need to get me rs clocks in asap

[tom28]

Jo, u bastard! thats just unfair!

[texr2000]

i given up working out MPG £10 dont last much more than a run around the block

[steve mk2]

Same here it's ok till u put ure foot down then u can watch the needle go down!

[RossMK2]

my 1300GT xflow bored out 30thou with dgav carb does about 20

[tom28]

maybe im not alone after all, im not sure what cam ive got tho or when it kicks in coz i dont have rev counter fitted yet, she goes so quick though, 0 to 60 is like whoa!! then petrol gage is like whoaaa shit..

[Fishtailparka]

My Escort pinto on 40s does 32mpg at least and easily gets 34mpg on a motorway run at 70-80mph. Worked out on satnav miles and by brimming the tank before and after.

[Toby]

hi all, recently put 1700xflow in me car, had it setup at company me dad works for, but me esky just drinks fuel, its 1700xflow, big valve head, fast road cam, twin webber 40s, 4 branch, etc, im not even getting 20 to the gallon more like 10-15maximum..

 

is this normal or is it best to put her on rolling road?

 

How did they set it up without putting it on a rolling road?

 

How hard are you driving it? What gearing is it on?

 

I would imasgine you could thrash it to death and return around 8-10, but on a run it should do 20-30.

 

A noisy exhaust should aid fuel economy. A "fast road cam" with high lift short duration should be ok - like a 234, but an old fashioned BCF2 will have a bit more overlap which is bad for economy.

A raised compression is also good for economy - ie 1300 pistons in a 1600 should help.

 

Take it somewhere like HT or Sanspeed - tell 'um Vinny sent you

[texr2000]

Same here it's ok till u put ure foot down then u can watch the needle go down!

 

Meters per gallon not miles lol

[tom28]

been thrashing it abit, but then i thought no resist temtation and drive her nice n slow but she still drinks, they rigged a machine up to the carbs and done test runs, not actuall rolling road, im unsure about the cam all i got told was it come out a westfield kit car and it had a fast road cam, seems to pull nice but even cruising its no better to be honest

[ZetecVan 2.0]

I managed almost 30mpg going down to the Pod. I was following a Mk1 Tranny so was doing 50-55mph.

 

Normally it's about 20mpg,

[steve mk2]

Same here it's ok till u put ure foot down then u can watch the needle go down!

 

Meters per gallon not miles lol

 

haha! That's brilliant I'm gona use that saying soon never heard that before!

[brettp]

get 17 /18 on a run does 75 on tick over not to tragic for a 6.3 litre

[Toby]

I always think a good rolling road is the place to start, a good operator will spot anything obviously wrong. There is a good chance the Caterham owner never bothered with a RR tune either....

 

Tell the operator what you are having the tune done for so he doesn't just think you're there for an extra 10 hp although it might be the by product of a good tune!

[tom28]

ok mate. cheers

[l j shaw]

I get less than 10mpg out my RS2 (when i used to work it out). and worth every penny, just enjoy the grin factor,

 

Used to get about 18mpg out my Mex, but given up working that one out aswell.

 

I now use the guage method, when its near the red i put stuff in

[deltamal]

I get 30 ish on a motorway run, cruising at 70, 2.4 cossie, throttle bodys, and DTA engine management, get's greedy if it's booted though!

[dawesy1700]

ive had 44mpg on a run, 1660 xflow, 234 cam, ninja bike carbs and a 4 speed box, but get around 25 in town.

[texr2000]

I always think a good rolling road is the place to start, a good operator will spot anything obviously wrong. There is a good chance the Caterham owner never bothered with a RR tune either....

 

Tell the operator what you are having the tune done for so he doesn't just think you're there for an extra 10 hp although it might be the by product of a good tune!

 

Nope, mine was set up at track n road after being run in as was a fresh build, now needs the final set up now its been properly run in. Poor MPG is down to the tune and set up of the engine + twin 40's, and the fact power is after 4k and my driving style

 

Then again i never properly worked out the MPG on the new engine, when i was running it in with a 4k rev limit crusing on the motorway MPG was super!

 

did find on the motorway my 1st 1600 on 40's was better than the 1300 on standard GT webber.

[tom28]

thats helped me out a great deal, im just gonna keep filling up lol

[Big_man]

In my standard 1600 escort sport I get 270 miles on a tank. With 4 spd box doing 60-65