MWF
Posted a lot
Posts: 2,945
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The kits specifically designed for certain engines are -really- easy they even come with base maps on the ECU. I helped a mate fit an SBD kit to his Vauxhall 2.0XE engine. The kit is basically a Jenvey kit with an MBE ECU and base map. was your mate richard branson - jenvey like to charge ALOT! Seriously though was there any difference in power? It did cost a lot yeah. Went from standard power (~155bhp) to 199bhp (on the rollers). |
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MWF
Posted a lot
Posts: 2,945
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Here is a link to the dyno plot lowandwide.net/gallery2/main.php?g2_itemId=182The lower curve was the power output right after we'd fitted the kit and using the supplied base map. As you can see with the mapping it both increased the peak power and brought it in earlier. As this engine didn't have the uprated rod bolts the rev limit was only 7250rpm. The mapping also dramatically improved the idle. Something I should add is it's a lot easier to do a conversion like this if the engine is already EFI. |
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just been quoted roughly £450 (jenveys) for all the bits i need for the conversion then would just need a megaquirt kit so for about £700 i could get quite a few more horses!
Oh then an army of people who know what they're doing to install it!
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ImpManiac
Part of things
Imps... Imps... Imps...
Posts: 868
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I take it you have to have a custom manifold made for this though? Yes, you do. I haven't got hold of one yet. When the time comes to actually fit the TBs, I'll explore my options. I'm even harbouring secret plans to have a go and make one myself...  "I'm"  |
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1966 Singer Chamois sprint/hillclimb car in white over blue two tone
1975 Triumph Stag long term project (over 20 years so far) in colour TBA
2003 Vauxhall Vectra GSi 3.2 in black sapphire
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MWF
Posted a lot
Posts: 2,945
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What engine is this on?
Bits you need usually include:
Bodies (1 per cylinder)
Air horns (longer = more torque apparently)
Fuel rail usually with -6 threads
New Inlet manifold (not essential but often used)
Adjustable Fuel Pressure Reg (you need a gauge too really)
Throttle Position Sensor (and a voltmeter to check it)
Injectors (not always required and available second hand)
Various aeroquip fittings and braided fuel line
Mappable ECU (and ideally some way of talking to it i.e laptop)
New loom (unless you like electrics)
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maybe not for a full set up - looked at more carefully its just for the duel bodies! every thing else needs to be purchased on top!
Kin ell that would be expensive!
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ImpManiac
Part of things
Imps... Imps... Imps...
Posts: 868
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What engine is this on? Bits you need usually include: Bodies (1 per cylinder) Air horns (longer = more torque apparently) Fuel rail usually with -6 threads New Inlet manifold (not essential but often used) Adjustable Fuel Pressure Reg (you need a gauge too really) Throttle Position Sensor (and a voltmeter to check it) Injectors (not always required and available second hand) Various aeroquip fittings and braided fuel line Mappable ECU (and ideally some way of talking to it I.e laptop) New loom (unless you like electrics) If you buy the cheapest decent-sized motorcycle TBs you can find on eBay, you get much of that stuff thrown in.  Really! Just make sure they're complete with injectors, rail, regulator, wiring loom, TPS, etc. You will still need an ECU, laptop, fuel line (doesn't have to be flash, braided stuff, but it is good) and an inlet manifold or adapter to fit it to your cylinder head. You'll also need a fuel pump (£10ish from a scrappy), ignition bits - if you are going for wasted sparks (use Ford EDIS bits - easy and cheap), HT leads and some wiring bits to make up a loom to connect from ECU to the bike TB loom. If you go for MegaSquirt, the software's free! Bikes have ram pipes too. My Fireblade ones are plastic!  "I'm" |
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1966 Singer Chamois sprint/hillclimb car in white over blue two tone
1975 Triumph Stag long term project (over 20 years so far) in colour TBA
2003 Vauxhall Vectra GSi 3.2 in black sapphire
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MWF
Posted a lot
Posts: 2,945
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It's a lot easy to type it then do it though isn't it.
Fitting a pre-developed kit is a days work but making your own is so much more involved.
I've seen so many people on forums go down the DIY throttle body route and give up.
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You will not "Get more power" either over twin sidedrafts or a bank of Bike carbs, peak power figures will be very similar Driveability will be better on fully mapped management, but a lot of that Gain is from the control over ignition timing  You will get a power boost from running individual chokes over a single TB and plenum set up because you are removing a big restriction in the system Is it easy to do...... As MWF said, if you are fitting a common set up (Jenveys/Zetec/Emerald) thats been done many times before then yes its "Relatively" easy to do If you are buying Bike throttle bodies, making an inlet Manifold, configuring your own base map, making your own Loom, making a fuel rail, sizing injectors etc etc etc..... Only you can answer that ? How confident would you be making that stuff ?? if the answer is not very then its going to be expensive to pay someone else to sort it all out for you  HTH Oh and HKPhooey  |
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Oh and HKPhooey  |
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MWF
Posted a lot
Posts: 2,945
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Feb 11, 2007 12:49:34 GMT
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You will not "Get more power" either over twin sidedrafts or a bank of Bike carbs, peak power figures will be very similar I was under the impression that on a more modern high revving engine bodies can produce more power than carbs due to being able to maintain more lamina air flow? Where as carbs need the turbulence to work properlly? Although I do doubt many could really justify the extra cost for just a bit more power. If my mate was doing it again I think he's go the carb route and save a lot of pennies. |
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Really! Just make sure they're complete with injectors, rail, regulator, wiring loom, TPS, etc.
