Twin 45's to Throttle bodies - Whats needed

[RemaL]

Ok after a good dyno result on my new blacktop Zetec I was talkign to the Dyno guy and again suggested TB's

I have little experance with TB's so have thought so far that I can either buy a pack with most of what I would need or try upgrading my Ignition only Omex for something that can also cope with bike throttle bodies

But If I go the bike way what TB's would be best? also any info on this would be great. first thread and I need to learn more before doing anything over the next winter

Where to start

[h4muf]

I thought long and hard about changing to tb`s.

Would like to have them for economy,but i think i would miss the flaming/poppin`

I don`t think there`s much to be gained powerwise.

What did it make on the dyno?

[singlecoil]

How much do you use the car, and does every last bhp matter? Is it running badly as is?

As well as the ecu, and the mapping, you will probably need a return line, and maybe a swirl pot, if you decide to go for fuel injection.

[RemaL]

singlecoil said:

How much do you use the car, and does every last bhp matter? Is it running badly as is?

As well as the ecu, and the mapping, you will probably need a return line, and maybe a swirl pot, if you decide to go for fuel injection.

already thinking of that have have a mate ready who's done this

The results where 18 BHP more at 1000 less revvs and 20Lb ft torque at 1200revs lower

All running well and good for Le mans. happy as it's bog standard blacktop and Tipton do have lower rresults that many other Dyno's I heard about. But power is not what I want but running smooth is and talking TB's they seem to help with MPG But the running and power curve and fueling

[S47]

Done It
You'll need
TB's
Fuel rail
Injectors
Return Fuel line
Fuel Filter
HP fuel pump
Swirl Pot
ECU + rolling road session for setup
Crank sensor [CS]
Water Temp Sensor [WTS]
Throttle Position Sensor [TPS]
Lambda sensor [depending on age of car]
>
Overall it's well worth doing, but there's a fair bit to do.
Should improve Power & fuel consumption 10-20%, but best bit is the easier starting and much smoother running.
Really it's a no brainer IMO.
hope this helps
Mal

Edited by S47 on Saturday 27th March 16:02

Edited by S47 on Saturday 27th March 16:06

[CorseChris]

Well worth it for the improvement in drive-ability. Might not be seen as very good VFM, but only you can say that! Decent gains in fuel economy when cruising too. No trouble getting 30mpg+ out of the Westy.

To retain good torque, don't get too excited about a huge TB. I have GSXR600 TBs on our Silver Top Zetec. Apart from the TBs and a half decent exhaust, it's box-stock. Makes 169bhp and 150lbft.

If you plan engine mods down the line, GSXR750 TBs are a decent option I think.

Be aware that you might have one or two niggles with off-idle throttle with bike TBs. Everyone I know that's used them has suffered to some degree or another, severity depends on LOTS of variables!

[NeilE]

I can completely echo what CorseChris said, running GSXR750 TBs on a zetec in my Mojo.

You may find this page on my website (and the following one) a useful read!

http://www.mymojo.co.uk/mods/mods_throttle_bodies....

BTW, I get up to 40mpg on a long run, when I was on twin 40s low 30s was the best I could get...

...and you can still get the pops and bangs if you want with a bit of map manipulation!

Edited by NeilE on Saturday 27th March 18:38

[RemaL]

great thats a good start many thanks for that and will sdtart lookign and will also be bringng this back up when I have more questions.

best I have go from my twin 45's is 32MPG and worst 8MPG on track

really thinking TB's will help at the dynol fueling and more to get right then wrong with carbs

[Stubby Pete]

Have a chst with Mark at MB Motorsport, he's very helpful and now has a rolling road too!