Jenvey vs. OER throttle bodies??

[status]

Is the golf the same set up as when Skoda came out with the truck which could convert into a 4 seater,they were yellow ,remember ?

 

[jonbills]

Yep. Granted, 48/50mm may be rather OTT on a stock motor, but for someone like myself with bigger plans, it’ll be ok in the meanwhile.

If it had 500bhp stock, then having it that oversized would make it undriveable. The tiniest amount of throttle pedal would give you 100hp!

With a stock 150/200hp setup though, it’ll probably just feel really torquey.

The MK4 Golf R32 is an example I often use. It’s electronic throttle, obviously, but not mapped 1:1
At the start of the pedal travel, 10% pedal actually equals about 30% power, to make them feel really snappy and torquey.
Trouble is, the last 30% of pedal feels totally dead, as it only makes a tiny difference to blade angle.

It makes people with R32 golfs think they’re really quick, when actually the throttle is being artificially stamped on for them.

Also, what an awesome forum this is, that a quick question about a versus b throttle bodies has turned into an interesting and engaging discussion about throttle body tech!

We can always turn a simple question into a long debate

 

[yellowz]

I’d like to end up with a solution I could put together as a complete ‘ITB Conversion’ for the UK/EU market, complete with a base map. I suspect those who aren’t so confident would appreciate such a thing.

I would!

 

[Robotsan]

Yep. Granted, 48/50mm may be rather OTT on a stock motor, but for someone like myself with bigger plans, it’ll be ok in the meanwhile.

If it had 500bhp stock, then having it that oversized would make it undriveable. The tiniest amount of throttle pedal would give you 100hp!

With a stock 150/200hp setup though, it’ll probably just feel really torquey.

The MK4 Golf R32 is an example I often use. It’s electronic throttle, obviously, but not mapped 1:1
At the start of the pedal travel, 10% pedal actually equals about 30% power, to make them feel really snappy and torquey.
Trouble is, the last 30% of pedal feels totally dead, as it only makes a tiny difference to blade angle.

It makes people with R32 golfs think they’re really quick, when actually the throttle is being artificially stamped on for them.

Also, what an awesome forum this is, that a quick question about a versus b throttle bodies has turned into an interesting and engaging discussion about throttle body tech!

Ah, so those Golfs have a permanent version of the sport mode in the E46 M3 then? Or like those Sprintbooster things you can get?

 

[Robotsan]

I would!

Same I think. I really don't know what route to go down with my engine. So many options!

 

[Larby]

Ah, so those Golfs have a permanent version of the sport mode in the E46 M3 then? Or like those Sprintbooster things you can get?

Yep, just like that!

Sounds like I’d best start getting some kit plans together then with all this interest!

 

[Rob Gaskin]

Do throttle bodies have interchangeable choke tubes like the carbs do? If so the quoted bore size is less important apart from going too small.

 

[Mr.G]

Do throttle bodies have interchangeable choke tubes like the carbs do? If so the quoted bore size is less important apart from going too small.

No, they are fixed. It's just a hole with a butterfly in it.

 

[Rob Gaskin]

No, they are fixed. It's just a hole with a butterfly in it.

Poor butterfly.

Even the retro carb lookalike ones?

 

[Mr.G]

Yes Rob, they are just made to imitate the exterior look of a carb only. Clever to get everything inside and looking like a carb but they work in the same way as the other type of ITBS. Simple barrel and butterfly valve, most have a bleed screw to adjust the idle per barrel but thats it.

 

[s2k_adz]

@Fairlineguy is the man to speak to re ITBs