Welly Jen Posted October 17, 2015 Posted October 17, 2015 Been reading with interest and would like to ask the question With the price difference there must be gains to installing and setting up the car throttle bodies (jenvey/omex) compared to these bike carbs set-ups you see for around £700 ? People who have installed bike carbs seem to like them. People who have, like me, installed throttle bodies like them too. Don't know if anyone on here has tried both bike carbs and throttle bodies on the same car and engine and can give an objective comparison. Bike carbs seem to work better than the half century old technology of Weber DCOE's. Throttle bodies allow for precise and appropriate fueling under all conditions. Jen Quote
1959grantura Posted October 17, 2015 Posted October 17, 2015 Sorry I did actually mean bike throttle bodies !! Quote
Sparkymart Posted October 17, 2015 Author Posted October 17, 2015 My 2.0ltr zetec on 45 webers with Alpha 3d igniton and 5 progression holes puts out 163.5 bhp One thing the rr operator told me was something they discovered by accident on an Escort with the same engine setup. On top of the carbs there is a cover with a wingnut over the jets, if you leave it off it greatly reduces the flatspot that most zetecs on carbs have. On our recent 1881 mile European tour i regularly swapped between cover on and cover off and the difference was quite noticeable Try it and save yourself £2000 - £2500 Thats interesting Paul such as simple idea, did you get any fuel spills? Quote
Welly Jen Posted October 18, 2015 Posted October 18, 2015 Sorry I did actually mean bike throttle bodies !! I think saving time and fabrication. I initially acquired a set of GSXR600 bike throttles for my car. To use them the plan was to remove the auxiliary spindles and seal the bearing holes they use. Respace them to suit the manifold. Fabricate front and back plates in aluminium to interface with the manifold and air filters. Make a new fuel rail to suit the new spacing. A lot of work, which is why I bought a set of Jenvey's instead. Alternatively, I could have cut down my existing manifold and used rubber tubes and jubilee clips to connect to the unspaced set of bodies, but I didn't like that idea. Building a new intake manifold to connect a set of bike throttle bodies and a Pinto was beyond my skill. Paying someone else to make one would have removed the cost advantage. If someone sells a suitable manifold at a reasonable price now, then the balance might go the other way. Jen Quote
Paul Hurdsfield - Joint Manchester AO Posted October 18, 2015 Posted October 18, 2015 Thats interesting Paul such as simple idea, did you get any fuel spills? Nope, after all it's only a dust cover. During our trip my performance and fuel efficency was on a par with all the other cars, even better than some, and on the trip we had:- 2.0ltr Zetec on std Ford single throttle body. Marcus B 2.0ltr Duratec around 200 bhp. Wayne Shep 1.8 Zetec on Throttle body's John Panda 2.0ltr VX on throttle body's Lee Smith 2.0 ltr Zetec on throttle body's Terry In fact mine was the only one using 50 year old DCOE carb technology, actually I think it's probably far more than 50 year old tech Quote
Lawrie Posted October 18, 2015 Posted October 18, 2015 My 2.0ltr zetec on 45 webers with Alpha 3d igniton and 5 progression holes puts out 163.5 bhp One thing the rr operator told me was something they discovered by accident on an Escort with the same engine setup. On top of the carbs there is a cover with a wingnut over the jets, if you leave it off it greatly reduces the flatspot that most zetecs on carbs have. On our recent 1881 mile European tour i regularly swapped between cover on and cover off and the difference was quite noticeable Try it and save yourself £2000 - £2500 I'm a Dellorto man myself, but isn't this cap and wingnut the inspection cover for the jets and emulsion tubes. Directly below it are the air bleed jets, which are usually fed air from the filters by a big hole in the carb body above the venturi. It sounds like your air filters don't have a cut out for this hole. But then why is the Dellorto cover vented? Quote
Paul Hurdsfield - Joint Manchester AO Posted October 18, 2015 Posted October 18, 2015 Yes it's an inspection cover to access the jets and emulsion tubes and as you say the air is sucked in through the big hole which is in the air filter housing, maybe, just maybe, and I'm no expert, a little bit more air gets sucked in through the open cover and that makes the difference to improve on the well known flat spot. Quote
DerekJ Posted October 19, 2015 Posted October 19, 2015 Hi, I have a complete conversion set up for sale in the "parts for sale" section here... http://forum.wscc.co.uk/forum/index.php/topic/116308-xflow-injection-upgrade-set/ Take a look before it goes up on the bay..... Cheers DerekJ Quote
corsechris Posted October 19, 2015 Posted October 19, 2015 Hi, I have a complete conversion set up for sale in the "parts for sale" section here... http://forum.wscc.co.uk/forum/index.php/topic/116308-xflow-injection-upgrade-set/ Take a look before it goes up on the bay..... Cheers DerekJ Looks ideal to me. If the same as those on ours, and no reason to assume otherwise, injectors are probably in the region of 220cc/min @ 3BAR so plenty for your engine. Quote
Sparkymart Posted October 19, 2015 Author Posted October 19, 2015 Hi, I have a complete conversion set up for sale in the "parts for sale" section here... http://forum.wscc.co.uk/forum/index.php/topic/116308-xflow-injection-upgrade-set/ Take a look before it goes up on the bay..... Cheers DerekJ Dam these bargains always come up to early,Was looking to start in the new year just spent my allowance on rac roll bar and half hood... But very tempting Quote
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