Throttle bodies, jenvey etc

[Vista]

I'm planning an engine overhaul this winter, having gone to town on the head last winter, I'm targeting the bottom end this time round.

 

Plans include a 205 block bored out to 93 mm and a stroked crank to give me a 2.2 capacity plus all the trimmings like lightening and balancing etc

 

But (and here's my current dilemma)

 

I fancy a set of Throttle bodies instead of my current Weber 45's, has anyone done this what's a ball park figure on cost, and is it worth the expense and effort?

 

All advice appreciated

[johnny_h]

oldskool not

[johnny_h]

flash and responsive yes

[Tom]

deltamal has got TB's on his mk3 'tina pinto mate

[ZetecVan 2.0]

I've got Jenveys on my Zetec. Give Simon Joyce at Jenvey a call and ask if they've got any seconds. I got something like 30% knocked off after I spoke to him at the autosport exhibition a couple of years ago. They have two paint faults but they're on the underside so can't be seen once fitted.

[Vista]

deltamal has got TB's on his mk3 'tina pinto mate

 

I Know, he lives just down the road from me, should be seeing him tomorrow night at a show at our local Ford dealership, they've got one of the new GT's there alongside my car................was hoping they'd give me a drive but twas not to be

[Vista]

I've got Jenveys on my Zetec. Give Simon Joyce at Jenvey a call and ask if they've got any seconds. I got something like 30% knocked off after I spoke to him at the autosport exhibition a couple of years ago. They have two paint faults but they're on the underside so can't be seen once fitted.

 

What sort of improvement did they give you, was it worth the expense and how much did it all cost? I'd be looking at fitting them to a pinto.

[ZetecVan 2.0]

Well the improvement was significant as the van didn't have an engine when I got it. I can't compare them to carbs the engine's never had them on. The induction burble is great, and now I've got them balanced, they're very smooth. I've been having problems with the megasquirt, but that really has been related to me having injectors that were too big and low impedence (most ecus have problems with low impedence and modifications have to be made). If I'd bought the injectors I have at the moment (pug 205gti) then I reckon I wouldn't have had any problems at all.

 

Prices: Megasquirt £140 built. Injectors £12 for 4 (ebay). TBs - I can't remember. £400 ish. Then there's bits and pieces like linkages and trumpets which probably came to £200.

[Pinto J]

Megasquirt II seems to be the way to go these days as its so programmable and has an aweful lot of support on the WWW ...and its cheap

 

As to the TBs, thought about modifying some motorbike ones to do the same job ? Jenveys/weber alpha/etc are weeeeeey to expensive IMO for whats basically a butterfly in an alloy tube - and you can pick up a set of 4 bike TBs for the price of a single jenvey and still have change!

 

When selecting TBS too, dont go overboard on sizes - 38mm bodies should be about right for the application - going too big kills the airflow speed and makes for poor atomisation and subsequently, power.

 

Check out Ebay for TB prices.

[Vista]

Megasquirt errrr explain for one who's only done old skool before please

[ZetecVan 2.0]

If you're going throttle bodies, you need injectors. Modern cars have an ECU which controls the spark and injectors, but it's hard wiring one up to an old car (not impossible though), and the ECU is set up for the car the engine is out of (FWD Mondeo), not a RWD Escort. The megasquirt (http://www.megasquirt.info) is an aftermarket, build it yourself from a kit, ecu. It's fully programmable, so you can run it on most cars, but there's also a steep learning curve that goes with it. It's not like an Emerald where you're supplied with the map to get you going and then you take it down to Dave to be rolling roaded. A lot of it is trial and error. I've had my van running since June, but it's only the last month where I feel that it's running well. It's not perfect as it does need a rolling road session, but it's good.

[V8ian]

Fuel injection every time, Im running Jenveys/Luminition downdrafts on my 4ltr Rover, Totally reliable, starts on the button, and unbelivable fuel consumption if you are kind to it, Went to Stratford upon Avon a couple of weeks ago, its about 85 miles from my house, I got there on under a tenners worth!!!!!!!!!!! , And for me the Emerald is the way to go, just for the setting up reasons alone makes it worth it, all for one setup price of £250.

http://www.jenvey.co.uk/ check out some of the links on the Jenvey site, that may help with what you want to know.

Ian