toyota_ae71 Posted August 17, 2008 Report Posted August 17, 2008 Heyy, Just been thinking bout running twin down draught webers on my 4k?? as ive only just found out that there is a twin down draught manifold for the k series! would it be worth it and i no side draught would be better but i cannot afford the set up!! so is there anyone who runs them and whats the economy like?? and how hard is it to tune them?? Thanks a heap corey.t Quote
Ke ping it reals wifey Posted August 17, 2008 Report Posted August 17, 2008 (edited) Heyy,Just been thinking bout running twin down draught webers on my 4k?? as ive only just found out that there is a twin down draught manifold for the k series! would it be worth it and i no side draught would be better but i cannot afford the set up!! so is there anyone who runs them and whats the economy like?? and how hard is it to tune them?? Thanks a heap corey.t As long as you have done other work to the motor like cam, head porting and extractors at least it would be worthwhile Otherwise just put a single weber with an adapter on your standard manifold You will find that will be quite adequate on a stock engine And as far as economy, You will always sacrafice economy for power and if you drive sedatly they are fine Put your foot down and you pay Just realised i'm in my wifes log in, i'll change that now I hope that helps Andrew Edited August 17, 2008 by Ke ping it reals wifey Quote
toyota_ae71 Posted August 17, 2008 Author Report Posted August 17, 2008 (edited) thanks yeah I'm already running a 5200 holley (32/36 weber) but i don't like it as the way it idles, i plan on getting a "rally cam" off tighe cams and little headwork and already have the tractors :dance: cheers any pics of just the manifold would be great 2 as i can't find any Edited August 17, 2008 by toyota_ae71 Quote
KE ping it real Posted August 17, 2008 Report Posted August 17, 2008 (edited) I've only got a photo of a sidedraght set up(which i am selling) So thet wont help if you want to see a downdraght The other thing is that a single 32/36 weber will provide more than enough fuel for a mild 4k The only difference with twins will be your responsivness Edited August 17, 2008 by KE ping it real Quote
toyota_ae71 Posted August 17, 2008 Author Report Posted August 17, 2008 yeah that was my plan for the responsiveness (spelling) as its a rally/club car, and maybe get 50 or 60 thou taken off the head?? Quote
snot35 Posted August 17, 2008 Report Posted August 17, 2008 The linkage setup might be a bit of a nightmare? I'm not sure how they work on the 32/36's, I think there are different types. I'd probably stick with the single and get some twin dellorto's if I really wanted to up the ante. Do the head work and cam, get it tuned properly and see how it treats you. Quote
toyota_ae71 Posted August 18, 2008 Author Report Posted August 18, 2008 think I'm guna have to agree, because it's not as easy as i thought it would be to get my hand's a manifold :sob: lol Cheers Quote
coln72 Posted August 18, 2008 Report Posted August 18, 2008 try to find a 3kb set up and try that. If you want then adapt the webers to that manifold. Quote
reTRD Posted August 18, 2008 Report Posted August 18, 2008 try to find a 3kb set up and try that. If you want then adapt the webers to that manifold. hey try www.trademe.co.nz i no its a New Zealand based auction web site but we always have 3kb twin carb manifolds with cars and linkages on there ready to bolt on. + the bonus to that is if you just bolt 2 factory 4k carbs to the manifold it is going to go overrated and be a shit load cheaper than looking into re-jetting anything to suit ur motor. Quote
Jono.B Posted August 19, 2008 Report Posted August 19, 2008 hey try www.trademe.co.nz i no its a New Zealand based auction web site but we always have 3kb twin carb manifolds with cars and linkages on there ready to bolt on. + the bonus to that is if you just bolt 2 factory 4k carbs to the manifold it is going to go overrated and be a shit load cheaper than looking into re-jetting anything to suit ur motor. yeah man, i got my twin carbie set up, with a whole 4k for 200 bux Quote
camerondownunder88 Posted August 19, 2008 Report Posted August 19, 2008 Stock twin carbies have smaller jets than a standard single carby. So a little trick is to put 2 stock carbies off a single carby car on a twin cary manifold and you will get more power also. A guy on here was once running a twin carby mani with 2 Webber's I believe he had a lot of tunning issues. But if your working the motor your crazy not to get a second hand side draft set up. Cheers Cameron Quote
SeptemberSquall Posted August 19, 2008 Report Posted August 19, 2008 Heyy,Just been thinking bout running twin down draught webers on my 4k?? as ive only just found out that there is a twin down draught manifold for the k series! would it be worth it and i no side draught would be better but i cannot afford the set up!! so is there anyone who runs them and whats the economy like?? and how hard is it to tune them?? Thanks a heap corey.t woftam Quote
beerhead Posted August 20, 2008 Report Posted August 20, 2008 32/36 webber is a little large on a 4K as is, around the 200CFM mark. Now consider a 202(approx 3.3L) old holden motor with a mild cam runs like a dream on a 350CFM holley. A 4K with 2 webber's and you're hitting 400cfm on a 1.3L motor. This will run a mild 308 or 253 happily. You want to be in the right flow range to match your motor, with too larger throats you end up with crap all vaccum, and crap torque till you wind it all the way out. Not daily driver material Heyy,Just been thinking bout running twin down draught webers on my 4k?? as ive only just found out that there is a twin down draught manifold for the k series! would it be worth it and i no side draught would be better but i cannot afford the set up!! so is there anyone who runs them and whats the economy like?? and how hard is it to tune them?? Thanks a heap corey.t Quote
Teddy Posted August 20, 2008 Report Posted August 20, 2008 hahah brad is right ^^ But some of us just can't get over the induction noise, excessive outside attention & throttle response :sob: Quote
KE ping it real Posted August 20, 2008 Report Posted August 20, 2008 +1 i'm gonna miss my dellortos Quote
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