hogdog

Has anyone used them?

http://atpowershop.co.uk/catalog/for...ead-p-143.html

btcc93

I know of someone building a 2ltr Zetec engined kitcar speed event car using these, but as yet the build has not got as far as having them on and running. But he is not the sort of guy who is likely to buy a pup so believe that they must be good.

JonnyBravo

Plenty of people using them, very nicely made bits of kit.

My only query on the design is the throttle plate is very close to the inlet on the head, normally even on the Jenvey setups people will space the tb further away from head to gain more power so I'm not sure they are best for a big power engine.

Very good price though and certainly not crap.

hogdog

That's what I want to know really, I'm interested in roller barrel throttle bodies and wanted to know if these are as good as the Titan stuff.

hogdog

It's for a Focus where there is very little room between the engine and the bulkhead so the fact that the throttle is close to the head may not be ideal for power but there's always some sacrifice with the Focus in regard to the length of throttle bodies.

btcc93

Fit the longest airhorns you can and that should cure the shortness problem and help torque figures.

Big Will_

I looked into a set of these last summer as an alternative to the problematic supplier I was using for a Jenveys/ECU package.

Very clued up sales staff, they offer a good package with the Typhoon ECU as well which is good.

The location of the butterfly/barrel in relation to the inlet port division isn't so critical as opposed to the overall inlet length compared to the engine speed window. For rarefaction to occur and give optimum power the overall inlet length (back of the inlet valve to the bellmouth) needs to be around 330mm with a 7500rpm peak power target. Bellmouth diameter needs to be chosen to give a target airspeed of Mach 0.5 too.

hogdog - drop me a PM if you need any more info

JonnyBravo

Great info Will

tabetha

My mate works there, have seen many mapped, and considered to be good bits of kit, just not into tb's myself, but if I were it would be these on my shopping list.
As said inlet length in total is important and can be played with to alter power curve/cure problems, some people have done loads of work in this area.
tabetha

hogdog

I doubt I'll be able to get 330mm of inlet length but I may be running slightly less revs than that as my cams will have started to drop off at around 7000-7200rpm so that might not be too bad.

Has anyone here used the Typhoon ECU? It looks like a good value package but I was thinking of going with the tried and tested Omex 600, purely because I've no idea about the Typhoon.

Thanks everyone.

I'll P.M you soon Will, cheers mate.

tabetha

99.9% sure the typhoon is exactly the same ecu that lotus use, made by EFI in italy, very good ecu's, EFI make mostly oe fit ecu's very successfully, they are just in a different box that's all, they use a very common processor, the same as the one in my emerald K3!!
They are supplied by SC, Specialist Components, in Wymondham, Norfolk by Simon Hill, who's a very knowledgeable man ecu wise, it's an excellent product.
tabetha

btcc93

My friends who have a kitcar building business tend to stick to OMEX, unless the client insists otherwise. They say that out of the budget end of the market OMEX is the most consistant quality wise, the easiest to map consistantly and good value for money. They are somewhat anti Emerald and Megasquirt to say the least and none too keen on DTA. The proof of the pudding is that last year to my knowledge cars they had built/prepared had multiple class wins in several sprint and hillclimb events.

Big Will_

OMEX is very good, its a dream to map and Andy offers brilliant tech support and is only a phonecall away. I've used both the 600 and the 710 and now they've got the CAN network sorted on the 710 it's very, very good.

Regards your rev limit being lower, sadly that actually means you need a longer inlet. To get away with a shorter inlet length you'd have to rev higher.

How scared of brutal modifications are you? Having now seen exactly whats involved, cutting back the 'shelf' on which the wiper motor rests isn't actually that bad...

hogdog

I suspected that just after I wrote it

To be honest I'd rather not cut the firewall material if I can avoid it but it is an option. One thing that strikes me is the amount of space there is if you could angle the trumpets downwards slightly. You could have much longer trumpets if you could engineer a long radius bend into them. I'm not sure but I can't see a slight bend effecting performance too much as long as it doesn't effect diameter????

I'm passing their factory at the end of the week, if I get time I'll drop in and see if they'll let me have a look at a set.

tabetha

Maybe they make more profit on Omex ?, interestingly they are in business to make money, otherwise they would be called a charity.
They can be anti anything they want if you want to talk class wins, look at Craig Jamieson, running a K3 emerald on a RUNNING IN MAP, ie NOT full power as new engine, broke the lap record for his class at brands hatch on his 2nd outing, he had NEVER raced before, he then went on to win outright in his class on a emerald.
Any ecu is WAY more than about the ecu, it's the whole package, emerald is the only ecu designed in house, made in house, mapped in house, so you get to speak to the people who know it better than anyone else, but that's a small part of the story, the team are the most helpful people you could ever meet, often working into the early hours to get a car ready, a lot of time is spent fixing other tuners bodges.
You will likely find that a lot of the ecu's are using the same guts, but emerald is listening to feedback and has changed things on the ecu as a direct result of requests, such as the 9 pin plug to a usb, doubt many other makers would do that.
There is a lot more in the pipeline as well.
A ecu is only as good as the mapper at the end of the day to get the best, if your tuner is happy with omex, or any other ecu go for it.
tabetha