Poppin n bangin on over run....

[X-pack-Glyn]

My cappa sounds great on over run, poppin and bangin like a works cosworth, but when i floor it its fine.

 

Escort21 reckons i should get it on the rollers and get it fettled.

 

problem is i hate it when another man fiddles with me bits

[V8ian]

out the carbs or exhaust

[X-pack-Glyn]

Out the zorst Ian....

 

isnt causing a problem, i thinks its running lean on overrun, lean mixture burns faster so is starts to burn before zorst valve fully shut (im guessing, overlap on cam) , cruises fine, floor it goes very well for the spec, no missing or bangin, just on over run out the zorst, sounds like an explosive gang bang of burning fuel atoms.

 

2 litre pinto, FR32, 40 dcoes. 5 degrees advance on vernier.

 

get the odd spit through the carbs but il the ones ive had with sidedraught carbs have been the same.

 

carbs efi

[ADY]

sounds like over fueling to me, un burnt fuel going into the exhaust

[X-pack-Glyn]

well, im getting a good 34 mpg, which for the spec is bloody good i think, and ive never driven it with economy in mind.

 

no flame, just pops and bangs when on over run, only way to desribe it as like a works cosworth or simallar.

 

ive had 4 foot flames with the last ignition system, but thats another story.

[ADY]

34mpg, f**k me thats good, probably not overfuelling then, Just ignore me!

[Mr Sam]

i get it too........it sounds nice and everything works

[X-pack-Glyn]

thats 34mpg, with a cam, 40s, a 4 speed and a 3.77, driven.....enthusiasticly!!!

 

maybe its just overfueling on over run???

 

ive had this on all multicarbed cars ive had though, i set em up to what i know, they pull hard with no probs, but every tuned multicarb engine ive had has done it.

[Twinkle]

i get it on the prefect, no wait that'll be the hole in the zorst

[ADY]

i watched the vid thats posted up, and it sounds shit hot mate!

[Fiesta Steve]

Almost definatly an air leak on the inlet side of things, usally an iffy mis-ab plate.

[stestu001]

I get it too probably not quite the same as you as ive got a 1.1 fiesta but it doesnt half pop away on overrun, love the way it sounds but I do that that little niggly feeling that something might be up with it.

[X-pack-Glyn]

Almost definatly an air leak on the inlet side of things, usally an iffy mis-ab plate.

 

Thanks steve, they are a few years old now, il get some on order and give em a try....

 

i dont mind the popping, but i did have a barry boy once ask me where i got my flamer kit

[Fiesta Steve]

Almost definatly an air leak on the inlet side of things, usally an iffy mis-ab plate.

 

Thanks steve, they are a few years old now, il get some on order and give em a try....

 

i dont mind the popping, but i did have a barry boy once ask me where i got my flamer kit

 

If you order some new ones order some new rubber washers (if you use that type) as well as they never squash up the same after they've been used for a long time.

[X-pack-Glyn]

Thanks Steve, the whole lot will prob be replaced, the thackeray washers and springs are on thier last legs anyway.

[Jay_harrier]

well, im getting a good 34 mpg ....

 

34 to the gallon? - Jezuz on a bike!, my old RS2 could only manage 17!, you must roll everywhere

[X-pack-Glyn]

No mate, seriously, usualy foot to the boards...many on here can vouch for that too....

 

if i wanted economy id have a 34 ich and a crappy 5 speed

[Jay_harrier]

No mate, seriously, usualy foot to the boards...many on here can vouch for that too....

 

if i wanted economy id have a 34 ich and a crappy 5 speed

 

and I bet that would only give you a couple more mpg, sound like a sweet setup

[X-pack-Glyn]

i think the 30 mm chokes go a long way towards the economy, but dont seem to rob much power, still very tempted to go up to 34s though.

[Jay_harrier]

What power/torque does it make at the mo?

[X-pack-Glyn]

 

no idea, i just mess with it, if it goes better thats good enough, if i fit something that dont work it goes in the bin.

i dont like letting others fiddle with me bits.

[Jay_harrier]

 

no idea, i just mess with it, if it goes better thats good enough, if i fit something that dont work it goes in the bin.

i dont like letting others fiddle with me bits.

 

not even the missus?

 

The increase in choke size may give a bit more mid rangle/top end but possibly sacrafice the bottom end pickup. No harm in playing as long as it doesn't run too lean, you might have to play with the jet sizes to get the best results.

[capriluke]

ive got 34mm chokes in my 40s and im going back to 30mm

 

i got a lot of poping and banging on over run but after i balenced my carbs it wos much better. still there but not so much!

 

2.0 205block skimmed head 10.2 comp fr32cam 4 branch twin 40s

 

140bhp 6444rpm 135lbft 4578rpm