i have one '40 on a lynx manifold, and cant wait till i get a decent injection system! 20mpg? are you mad?!?! man id have to be being to towed to get that! today i got 16.9mpg, around town, and that was me being sensible mines been set up properly down at hitech with the correct chokes and jets and is running tip top. and has added say 15% onto the standard bhp. as they say, tehres no replacement for displacement, and i thnk ill be going 2.0i power as soon as i can find a nice enought sierra so instead of 86hp and 15mpg, i should be getting 125bhp (as standard) and 30mpg Edited by: LathamEscortMK2
couldnt agree more on this and the rest like ive always said when people ask, they only really need adjustment when spindles etc are worn/any more engine work/or theres some fecker hiding under your bonnet twiddling the mixture screws thats a good plot,is that at the flywheel? ive never been 100% about the power the mk1 put out when it was set up (once!) just watched some needle go upto a 142ish mark on a big gauge! (at the wheels) neil.
Trouble is tho that nowadays that glorious carb (or indeed throttle body) roar will see you slung off many trackdays unless its well muffled, as mrs miggins at 42 Acacia drive likes it quiet so she can listen to the Archers! Soddin' noise Nazis, you moved next to a race track!!- what did you expect flippin' silence!
mine only every went 'lumpy' at idle which a set up alwas fixed (but the carbs was well old mind u) but peak power etc was always the same.
greg my 150,000 mile stock kr made 158bhp on k-jet at vinces, obvously that is a different rolling road, different day etc, but it would still return 35mpg. can't really compare them as vinces rollers are pretty optimistic, or at least i'm sure they were when mine ran as GVK says be great to see a direct comparison.
Yep Prof, quite right. Ignoring all the differences in rolling roads, my peak power figure doesn't seem too impressive for a 2.0. However, it's clear from other people's setups that the bigger chokes give much higher power figures. 36mm chokes seem common for 2.0s whereas mine's on 32mm chokes which is a bit of an extreme example really but demonstrates the massive torque spread that's achieveable - I've not seen anything like it from a mechanically standard 2.0 16V except for some of the ITB engines. I suspect this is the real advantage to be gained from twin carbs. It's likely that 34mm chokes would retain most of the torque spread and also bump the peak power up a bit but that's just speculation and I'm not really inclined to try it as I'm happy with things as they are for now. I won't be able to get down to the Stealth day but I'll be very interested to see the results too. I suspect there'll be some embarrassing results for the carbed cars "but it made a nice noise!"
You've oviously not been to Donington then Steve They do not do a static noise test, it's all drive by stuff from the pit lane and 98db mostly.. You go over that limit as you accelerate from the chicane, you're black flagged at the other end of the pit lane. They have really tightened up on it of late as a local resident is making it very difficult for them, she writes a letter of complaint to the council every time there's an event on.. In the words of one of the instructors there.. "It's just one of those houses that won't burn" Edited by: GVK
Noise tests are done from the rear of the car and not the front, There will only be a problem if the circuit has random test points on circuit like Goodwood but then you will only be told to back off at that point. I run twin carbs with an omp competition zorst 90db @ 3/4 max revs and the max limit is 110db
Steved- Im not talking about static tests, & also trackdays & racedays dont normally comply with the same Db limits, Bedford is one of the strictest with noise testers all around the track & (im told) a random one they place where ever & there is simply no way unmuffled carbs on trumpets will get through, even caterhams with expensive 800 airboxs have failed, same for Goodwood, Coombe is strict & of course the Donny one too. Yes you can back off for the donny one on the pit straight, tougher at Goodwood as there is more than one & pretty imposible at Bedford, you also do risk the fella you have just over taken ramming up ya behind as you back off to pass the noise meter- which I know happened at Goodwood once.
Got to laugh. I'll be up for Donnington later this year actually. I used to go with Easytrack quite regularly then lost job so could not afford it with wage drop. Good circuit there though, always been keen on it.
Any 200+bhp 16v on carbs??? Rolling road day next Sunday August 21st Stealth racing... Come on boys. Edited by: GVK
i've got rid of mine now. could'nt be@rsed with the fuel bill as it's my daily car and rep mobil...on a track car only then would be good No strict comparison figures but i do agree that carbs seem to offer a good dose of low down torque.Car felt very much slower when i took them off and that lovely 'pull/jerk' from shifting to the next gear disappeared (lost approx 10bhp but on taken different rollers...)Would love to try them again on the new 'shed' head though ... if iowned half of Saudi to fund the fuel bill Other problem with carbs as recently found out is that they love to coat the inside of heads in coke (black stuff unfortunatly) which is cack on a daily driver. Edited by: sife1
