Fittment of throttle bodies to Svt zetec

[1turbofocus]

TWM Intake for the SVT is finished and port matched and looks very nice

If there is an angle that needs to be changed with lowering or raising this can be done also

Tom

[Anonymous]

SVT ,etc.

Twm has a straight shot into the combustion chamber that could produce some additional hp in a well developed motor according to a few engine builders I have talked to. I am thinking about 12: 1 compression with larger valves etc. so this may be of some benfit with 50 mm. bores. Also am hoping that because of the higher angle at the head there will be more clearance to fit the chassis brace. Anyway, that's the hope.

Tom: thanks for the help, keep me posted on the TWM manifold.

[Roll a 7]

Why do you think that TWM produces more HP? I've never heard that before.

I originally had TWM on my zetec and switched to Jenvey. Never heard of anyone switching the other way...

[Doug Liedblad]

Geoff

I believe the notch is to allow for the stock intake manifold.

I'll check and get back to you, also post a picture when I can.

I don't know about the cross brace, it is made removable on my car.

It will not fit with the stock Zetec Intake.

Doug

[Anonymous]

SVT etc.

Great info guy's! Thanks. Look's like It's just figuring out which manifold will work with the bonnet best. I've heard the TWM may produce more hp., but because of the straight shot into the head may be too close to the louvres for a clean cut out. One other item: Will the cross brace fit on the passenger side engine compartment under throttle bodies and what is this about a notch-out for the alternator on the chassis tubes?? If the alternator is down sized is this necessary? My kit is scheduled for build at the end of July. Thanks again, Geoff.

[1turbofocus]

"Currently loking @ modifing TWM manifold to SVT . Hope to make this work. If we delete VCT , any ideas on ECU's for 230- 250hp?"

Geoff, I got theZetec TWM manifold in last week and see no reason i cannot get it to fit the SVT head.I will do the rough in and final plan changes this week and should have a finished product in a week or two

Tom

[slomove]

Agree, I found no problem with the fit. Where the Webers with K&N filters used to go there are now the Jenveys with the ITG filters on the same manifold. Actually the K&N before as well as the new ITG are rubbing a little on the bonnet cutout front/bottom but nothing to worry about. It is mainly due to the soft engine mount on my car that allows the motor to move quite a bit.

Mind though, this is for a Birkin S3. The Caterham bonnet cutout might be slightly different. 1/2" more forward or aft can obviously cause some difficulties.

Gert

[Doug Liedblad]

Geoff

I've not installed it yet but as Roll A 7 says, many 7 owners have.

The manifold is for either carb or injected. The Jenveys I have are designed to fit on the same manifold as Webers.

I'll need to make a cutout on the bonnet just above where the bonnet meets the frame.

Gert ( slomove) has just done a conversion from Webers to Jenveys.

See his photo under the Event section - San Diego/Mt. Palomar blat on Saturday June 25

Here is a website that shows how the Jenveys fit on a Zetec. Not an SVT but it should be the same.

http://my.voyager.net/~quadrant19/index.html

See his Crossflow to Zetec conversion page.

Lumenitions are made by Jenvey.

Doug

[Roll a 7]

The Weber type manifold is angled and the Jenvey TBs attached to it stick out horizontally. The TWMs stick out at an upward angle of about 30 degrees, I think. An individual could prefer either look.

Which system works best and why seems to be a matter of some conjecture.

[Anonymous]

SVT saga

Doug: One concern is the angle of the manifold coming off the head and the way the air cleaner will come through the hood on a series 3 car. I've been told the TWM manifold may be too close to the louvers. Having a straight shot into the head is good for HP but will it fit without buggering up the hood.Is your manifold an injected or carb type? How's your Weber manifold going to work? Thanks, Geoff (FLA.)

[Roll a 7]

Woody Harris @ MSI Motorsport in Vacaville, CA is getting 5 sets imminently soon. I think that the base cost is around $800 or so---not sure on that. When you add an airbox, injectors, and all the other paraphernalia that you need it should be around $1600.

I'm using Jenveys and give them a big thumbs up! Hundreds of 7ers in the UK are using them and, to me, that makes Jenvey a "proven system". No other system has anywhere near that many on the road being used by 7s. My theory was to not try to re-invent the wheel, rather to utilize what was known to work. 8)

[Doug Liedblad]

Geoff

What part of the country do you live in? I'm in Ventura County CA.

I used a Weber Manifold for a standard Zetec and just removed material to line up with the SVT ports. SVT intake ports are 20 to 25% larger than standard Zetec.

The manifold I used has plenty of material to do this. I needed to move the mounting holes around a bit to get it all lined up. Not really a problem if you are into making metal chips.

I bought my Jenveys (45 mm) from the UK. When the dollar was much stronger. At the time the Jenveys were about 1/2 the price of the TWM. Some opinions are that the TWM 50 mm are too large but I'm not the expert.

There are some TWMs for sale on the list but as I already have the Jenveys, I going to try them first.

I may have gotten the throttle position sensor from TWM.

http://www.jenvey.co.uk/

They have manifolds for the Zetec but I found what may be another brand for less than they sell theirs for.

You might try Pierce Manifolds. They sell Webers and the Jenvey is a direct Weber replacement.

http://www.piercemanifolds.com/products.htm

Hope this helps.

Doug

[Anonymous]

SVT program

Thanks, Doug. Is your Weber manifold for a standard Zetec? What is price comparison between TWM & Jenvey? Finally, Where do you buy Jenveys?

Geoff

[Doug Liedblad]

Geoff

See the posts under 'Turbocharger for Caterham'

I spoke to Tom today and he seem quite knowledgeable about the Focus SVT engine.

He has info on how to program the Stock ECU and a kit to lock the intake cam so you can use a much less expensive ECU.

The route I will probalby go to for now.

My current plan is to use Jenvey's. I have a Weber manifold that had plenty of wall thickness to make it match the ports on the SVT head.

Tom may have even better ideas and was quite willing to share information.

https://www.focus-power.com

Doug

[Anonymous]

SVT throttle bodies

Currently loking @ modifing TWM manifold to SVT . Hope to make this work. If we delete VCT , any ideas on ECU's for 230- 250hp?