Enlarged Throttle Body

[Essex2Visuvesi]

When I had the Apexi intake and bored TB I used to nearly max out the MAF on WOT

Is there any real advantage to running an enlarged throttle body?
I was thinking of adding one when I go turbo

[loadswine]

If anyone is after an enlarged throttle body, I will have one available shortly.

[shnazzle]

Funny enough... I was just talking to Nic about where to get one Nigel

[Essex2Visuvesi]

Funny enough... I was just talking to Nic about where to get one Nigel

Here:-
 m http://maxbore.com/index.html m

has a very good reputation on other forums

[shnazzle]

Yeah I'd rather not pay the import/shipping  s:) s:)  

Drop me a line Nigel when it's off. I'm assume it's Nic's old Maxbore

[Essex2Visuvesi]

Yeah I'd rather not pay the import/shipping  s:) s:)  

Drop me a line Nigel when it's off. I'm assume it's Nic's old Maxbore

Won't be any duty if the paperwork is done correctly.... Its a warranty reapir  s;) s;)

[lamcote]

Do I remember an issue about a peculiar lack of engine braking after fitting a bored throttle body or am I making this up?

[Wabbitkilla]

Do I remember an issue about a peculiar lack of engine braking after fitting a bored throttle body or am I making this up?

I don't remember anything like that but mine had a lightened flywheel too which affects engine breaking.

[lamcote]

I have been searching the forums and have found that in 2007 a certain Wabbitkilla said this about his bored out throttle body:

"With the TB alone response was quite interesting. You can hear the engine breathing deeper and throttle response was definitely quicker, especially when you were already carrying momentum. The wierdest thing was the reduced affect of engine braking. Adding the lightened flywheel and clutch brought some of the engine braking back which is kind of wierd but at the same time pleasing."

I haven't read all the thread, maybe this was eventually attributed to something else?

[Mikeymead]

There is a company called Streetwerks that are offering bored out throttle body's.

[Essex2Visuvesi]

Any contact details for them other than faecesbook?

[shnazzle]

moved this to its own thread to stop dirtying the intake test thread  s:) s:)  Scoundrels

[Carolyn]

Hmm..  'enlarged throttle bodies' eh?  Get them from some site on the net??  Perhaps this should only be discussed in private.  Be warned - the effects are temporary.

[lamcote]

Some of us need all the help we can get, temporary or not......

[Mikeymead]

 l download/file.php?mode=view&id=495 l

Example of Streetwerks urm work

[shnazzle]

Nic, just noticed your thread on Spyderchat.
You said you had to tweak the tps signal using the EMU, until you got the apexi pic. Is that still the case?
Can't do signal translation with the EMB so I'd be pretty stuffed for the enlarged throttle body

[Jacobsprky]

i would be interested in this myself. thinking of doing it myself, port and polish and knife edge. will get a spare case i mess it up. i think as long as you dont mess about with the seat of the butterfly flap shouldn't mess up tps reading? didn't a chap called custard do boring? Jacob

[hachiroku]

If anyone is after an enlarged throttle body, I will have one available shortly.

I will definitely take this off your hands if no one else wants it, myself and Tommyzoom have recently been in contact with Maxbore regarding sending one out to him for modification, so this would be perfect for us.

Just name your price  s:) s:)

[shnazzle]

Too late  s:) s:)  tis mine hehe.
Did you check with Streetwerks? Their price si 165 I think. Might be close to Maxbore incl shipping and all that

[hachiroku]

No worries Patrick, wasn't sure if you wanted for definite as you mentioned possible compatibility issues with your EMB.
Haven't checked with SW as yet... will look into them.

[woodypk]

Apologies for the revival but I noticed that the thread is less than a month old so I thought I could get away with it  s:P s:P

Does anyone know the exact internal diameter of the enlarged throttle body vs standard? I have a very talented machinist at work who would give this a go if I asked him. I may end up taking the TB off my old '2 just in case I screw it up!

[hachiroku]

Does anyone know the exact internal diameter of the enlarged throttle body vs standard?

I've just bought a 1zz TB from Streetwerks, it's gone from 55mm to a safe maximum of 59mm. That also includes a new larger butterfly valve to suit. The Maxbore retains the stock butterfly as far as I'm aware, not sure what the diameter is on those.

[shnazzle]

Maxbore has a larger butterfly as well. It has to.

Probably also about 59mm. Can't really go much wider.
Be careful with the gasket. It's a bit of a pig

[woodypk]

OK thanks guys. Do you have an idea of what the material of the butterfly is? I know it seems a bit of a pig modifying this when I could just buy another, but at work I'm sure were capable of making things like this. Plus, it saves more pennies which I can use at the fuel slot machines.

[shnazzle]

It's not that easy but if you can get it done, all the better.
Need to bore out the body straight and even. Then get a brass butterfly cut. Then widen the slot in the spindle.