ChrisC Posted September 8, 2003 Share Posted September 8, 2003 I know plenty of you have done a throttle body conversion, can you help me with my shopping list. My car is a VX XE 97 on carbs with a coil pack (and a very dead ECU ☹️ ) The conversion must retain the twin K&Ns look (orders from the wife, or no funds) 1 x ECU 1 x pair throttle bodies DCOE equivalent 1 x fuel rail 4 x injectors 4 x Ram pipes 1 x pressure regulator 1 x throttle pot set of connectors to make loom (I can do this) a return fuel line mods to tank for return fuel line 1 x Fuel Pump suitable for injection. map for above (hoping a blatchatter can give me a good starting point) Assumptions I can reuse the original coil pack, and crank sensor. Chris.... H15 SVN Get it ! Edited by - ChrisC on 8 Sep 2003 14:32:56 Link to comment Share on other sites More sharing options...
lrem Posted September 8, 2003 Share Posted September 8, 2003 Hi Chris, Can't help with your shopping list, however I noticed these QED TBs + DTA ECU on eBay which look like they may be what you're after?: here Nothing to do with me by the way! Cheers, Lionel Link to comment Share on other sites More sharing options...
Peter Carmichael Posted September 8, 2003 Share Posted September 8, 2003 You absolutely need a properly baffled fuel tank. If you get a momentary interuption of fuel supply to the pump the engine will cut. FI doesn't have float chambers like carbs, so there is no reserve fuel. Easiest way is to buy a fuel injection tank... ...and I just happen to have one... Link to comment Share on other sites More sharing options...
Paul McKenzie Posted September 8, 2003 Share Posted September 8, 2003 ...or a swirl pot a la SBD Paul Link to comment Share on other sites More sharing options...
ChrisC Posted September 8, 2003 Author Share Posted September 8, 2003 Lionel - I will buy new, or I would want to see the parts before I buy (had a bad experiences in the past) so the eBay stuff is not of interest. Peter - List updated now reads 1 x Fuel Tank (injection) Remove mods to tank for return fuel line Chris.... H15 SVN Get it ! Link to comment Share on other sites More sharing options...
Peter Carmichael Posted September 8, 2003 Share Posted September 8, 2003 Steve Foster will have the best details for doing this conversion. Link to comment Share on other sites More sharing options...
Peter T Posted September 8, 2003 Share Posted September 8, 2003 Swirl pot route is much cheaper than replacing a perfectly good tank, especially if yours is an alloy version You can route your return line back via your filler neck, which saves having to remove your tank and getting a inlet welded to it. If you advertised what you need you will probably find most bits, i will have a fuel pressure regulator available soon. C7 PWT Pure Steel XE. Founder Member of The Twisted Prop Club. Link to comment Share on other sites More sharing options...
ChrisC Posted September 8, 2003 Author Share Posted September 8, 2003 Where is the Swirl Pot located? (not physically) In between the tank outlet and the fuel pump 🤔 Chris.... H15 SVN Get it ! Link to comment Share on other sites More sharing options...
Peter Carmichael Posted September 8, 2003 Share Posted September 8, 2003 With a swirl pot, you use an existing carb style pump to feed from the tank to the swirl pot which runs with an immersed pressure pump. Link to comment Share on other sites More sharing options...
ChrisC Posted September 8, 2003 Author Share Posted September 8, 2003 Don't like that idea, think the Injection tank will stay on the list. I will need a new fuel pump so it might as well be the intank style. Don't want to run two pump, for many reasons, like weight, more to go wrong etc etc. Also, assumption I can offset the cost of a new tank with the sale of my good carb tank. So I am not sure there will be alot in the cost between the two options. Is there any thing I have missed off my list? Chris.... H15 SVN Get it ! Link to comment Share on other sites More sharing options...
Anthony Posted September 8, 2003 Share Posted September 8, 2003 Chris Suggest you look carefully at cost. New pump/seal/sender/tank from CC expensive. Also it is unlikely you will get much for your tank - going rate is c.40-50 GBP from my experience. Swirl pot offers a quicker and much cheaper solution which will minimise your off road time. Tank will stay in position, minimising disruption to the car. I went the other route and costs soon mount up.... Link to comment Share on other sites More sharing options...
Paul McKenzie Posted September 8, 2003 Share Posted September 8, 2003 I've not even done it yet, but I've researched it plenty. It's a no-brainer AFAIAC, swirl pot...but if you enjoy tinkering, and money is no object..... Paul Link to comment Share on other sites More sharing options...
John Howe Posted September 8, 2003 Share Posted September 8, 2003 If you need a fuel pump, I have one - only spare as I upgraded for one with greater delivery power. JH Deliveries by Saffron, the yellow 222bhp Sausage delivery machine Link to comment Share on other sites More sharing options...
ChrisC Posted September 8, 2003 Author Share Posted September 8, 2003 OK - I am going to keep am open mind on the swril pot option. Assuming a SBD pot was selected where does this get mounted 🤔 If I go Injection Tank, the fuel guage sender will need to be added to my shopping list. Any more pit falls? Link to comment Share on other sites More sharing options...
Anthony Posted September 8, 2003 Share Posted September 8, 2003 I understand swirl pop can be mounted adjacent to the tank - position vertically is I understand critical, but others are best placed to advise Pump and seal was c. 200 GBP including upgraded pump, tank was c. 170 GBP These costs approximate as I do not keep reciepts You can apparently mount it in the engine bay but I was not keep on that. You will need flow and return pipework. The return can re-use your existing pipework. The other advantage of a swirl pot is that you do not need to replace the connections/filler, as carb one will not work. New neck c.40 GBP + aero kit c. 70 GBP + hoses etc Link to comment Share on other sites More sharing options...
Peter T Posted September 8, 2003 Share Posted September 8, 2003 Mount swirl pot in the boot, or on rear panel that sits behind drivers seat, but not in the engine bay ! this is due to heat as you will have problems, also i do not like the idea of having a Litre of fuel sitting in the engine bay, much safer next to a tank holding many litres of explosive fuel !!!!! C7 PWT Pure Steel XE. Founder Member of The Twisted Prop Club. Link to comment Share on other sites More sharing options...
ChrisC Posted September 8, 2003 Author Share Posted September 8, 2003 From all this talk about the fuel supply / return. I take it this is the main area of work for the conversion. So have I got this right 🤔 Carb Tank (normal outlet) to Fuel Filter (uprated?) to Carb Fuel Pump to Swirl Pot (which include a pump) to (under high pressure) Fuel Rail (and Injectors) returned by Fuel Rail Pressure Regulator along Original Carb Fuel line to Modified Filler Hose for return to tank Please correct because this is my main area of confusion Loom made, according to the ECU manufacture, and modified for two fuel pumps (I will also include a Inertia switch for safety) This I have no problem with. TBs built onto the manifold, and dressed according to the TB manufacture. ECU map (beg form fellow blatchatter hopefully 😬) to get it started. Then to the rollers for a mapping session. Drive home and enjoy and crack open a cold beer, or better still don’t open a beer and drive some more. 😬 Chris.... H15 SVN Get it ! Link to comment Share on other sites More sharing options...
Paul McKenzie Posted September 8, 2003 Share Posted September 8, 2003 Chris, take a look at this: http://www.sbdev.co.uk/Info_sheets/Fuel_injection%20_Set_up_instructions/2.0L%20Taper%20instuctions%20Print%20All/Fuel%20system%20with%20swirl%20pot.htm Paul Link to comment Share on other sites More sharing options...
Peter T Posted September 8, 2003 Share Posted September 8, 2003 That was just where i was going to send him *idea* C7 PWT Pure Steel XE. Founder Member of The Twisted Prop Club. Link to comment Share on other sites More sharing options...
ChrisC Posted September 8, 2003 Author Share Posted September 8, 2003 😬 Thanks Boys Is the rest OK? Link to comment Share on other sites More sharing options...
oilyhands Posted September 9, 2003 Share Posted September 9, 2003 Some points The fuel return line should go back to the surge pot, not the tank, then the overflow from the surge tank should deposit the fuel back to the main tank near the outlet for the low pressure pump. What about a throttle linkage? What about a coolant temperature sender? What about an air temperature sender? There is a section on conversion to EFI from carbs in my EMS article here, it may be of some help. Oily Link to comment Share on other sites More sharing options...
yankeedoodoo Posted September 10, 2003 Share Posted September 10, 2003 Are you considering an airbox, or am I (stupidly) missing something? Link to comment Share on other sites More sharing options...
Anthony Posted September 10, 2003 Share Posted September 10, 2003 Given V* bike engine solutions coming through - which are bound to get cheaper, perhaps save pennies and bolt in 300 BHP straight out of the box with 75 kg weight and bulletproof design. Could be 300, 340 or even 450 with supercharger ! R1000 anyone ? Link to comment Share on other sites More sharing options...
Peter T Posted September 10, 2003 Share Posted September 10, 2003 Anthony, i see you bought a copy of ccc 😬 😬 😬 Interesting reading huh C7 PWT Pure Steel XE. Founder Member of The Twisted Prop Club. Link to comment Share on other sites More sharing options...
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