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54mm Tb Ebay warning

S

spoonz

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Crikey, why would you bother to take the time to set up and bore only the top ends?? Wonder if the guts was removed before boring :eek: Loco
 
nightmare!,Pikey robbing *******s!!
the 54's dont make a whole lot of diff anyways you need the 57's form the CER rep!, which if you have a preo04 slot straight in!!!
Ck
 
Spoonz,

You pay via Paypal ?

If so you should be able to get ya cash back :thumbup


Cheers,


Ritch
 
Wasn't spoonz who bought em..someone on the other forum Ritch!
How yer healing up there bud? all back in form yet or still a few aches n pains.
Regards
 
AusRSV said:
Wasn't spoonz who bought em..someone on the other forum Ritch!
How yer healing up there bud? all back in form yet or still a few aches n pains.
Regards
Click to expand...



Thanks for clearing that one up, i really should learn to read:doh


As for me healing, still got aches/pains, better than it was, still having physio, thanks for asking dude,


Cheers,


Ritch
 
i have been speaking to the same bloke on AF1 about getting a set of TB's bored out to 57 he told me that its only the top of the TB's that get bored out .

hope someone can keep us posted so we know weather its worth dealing with him
 
Sounds weird to me

What's the point of boring out the opening of the throttle body if the butterfly and area around it is the same size. It's the bufferfly that determines the volume into the Tb.

It's a bit like having a bucket with a 1 inch hole in the bottom and changing it to a 1 ton drum with a 1 inch hole in the bottom. The same amount will flow out of the 1 inch hole in both.

I found a throttle body specialist on the net who explains what he does pretty well and it has to be bored all the way down with a taper and a bigger butterfly. Unless i'm missing something i don't see the point of what this guy is doing.

http://www.maxbore.com/
 
I would have thought that just boring the top half would cause air flow turbulance problems whereby a tapered throttle body would promote a smooth airflow and the top bored out only would have a step near the butterfly this would disturb the air and cause turbulance (which as I understand it is not good) ....or maybe I'm talking ***** and have missed the point :)
 
sorry i worded my post wrong he dose replace the butterflies with new .8 degree butterflies and if you look at the top of the bodies they taper to a larger size further down .

i believe all that is done is its bored out down to the same size as the taper . was thinking about doing the job at work as we have all the equipment to do it apart from making the butterflies

I'm not 100% sure if that's how its done but in my eyes it seems like the way of doing it
 
I read on one of the forums that the inlet diametre of the cylinder side of the tb's need to be the original size to help compress the air/fuel mixture for a greater velocity squirt into the chamber (but for the life of me and a few hours trawling around the forums I can't find it - bet someone comes back after 5 mins having found it :roll ) anyways be interesting to see what the difference in size of the cer or factory tb's inlets (cylinder side) and the 51's.

Oh yeah the post also said something about the oval shape being important for the process and the guy thats being referred to here is boring them round - again this is just what I gleamed from the post. He may well be doing the right thing but as Rsvr06 said the guy is tapering the tb and replacing the b'flies.
 
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The idea of the taper is to pressurise the mixture and the bottom of the TB needs to match the manifold hole size but to me it still stands that the overall size has to increase to a degree or you won't get more into the cylinder. As someone has said the taper should be a smooth transistion not a step which is what Andy found on his.
 
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