machining throttle bodies feeler

tdh-syorks · January 26, 2010, 07:00:34 PM

over the next few weeks i'm going to find out my fixtures and jigs for machining out throttle bodies to 50.8mm (2") once i get sorted and setup properly i can start taking orders. i know i have had quite a few requests for this before christmas when i was busy with other stuff.
i will be charging £80 + postage for disassembly,machining, new butterfly to suit and re-assembly.
i will keep this page posted when i get setup.

Also if you have any snapped bolts or stripped threads in charger casings or snapped rocker cover bolts from cam bearing caps etc, i can provide a repair service for these inconveniances.
PM me for postage and price details.
Located in Sheffield.

Cheers Tom

dub-disaster · January 26, 2010, 07:05:21 PM

think i paid £120 for mine to be done.... im not sore about that

breadman · January 26, 2010, 08:09:56 PM

I'd deffinately be interested in one Tom.
I'm not doubting your abilities, but have you done a 51mm t.b. before and tested it? I know there have been problems with some that were made before when the throttle disc didn't fit the body correctly.
Would you be dewedging the throttle as a matter of course? And what about machining/blending in the throttle spindle?
Thanks in advance,
Richard.

breadman · January 26, 2010, 08:22:52 PM

Quote from: Rae on January 26, 2010, 08:17:29 PM
new butterfly = no wedges!

Pretty obvious when you think about it!

Class dunce

Puncharado · January 26, 2010, 08:42:22 PM

Hi Tom, just got another TB for this very reason. I was planning on getting a price locally, does your price include matching the tee piece to the TB? I'd also kind of like to do it myself, but always good to have another option!

jez1272gt · January 27, 2010, 04:16:42 PM

Im hugely interested in this Tom.. illl keep my eyes peeled!

tdh-syorks · January 27, 2010, 07:27:49 PM

i machined one out last year for PeteG40 and didn't manage to do the T piece very well, i need to make a new fixture for this so this may take a little time.
i stripped his throttle body down, bored it out to 50.8mm and made a butterfly to suit. if you notice on a stock de-wedged throttle body the butterfly doesn't seal properly, this must be one of the reasons why the wedges were origionally fitted.
another problem i had was getting a good finish, it was smooth but didn't look it. someone once mentioned the surface had to be as smooth as glass to restrict airflow turbalance, personally i can't see how this matters on the throttle body as the air has just passed a T piece on top, the shape of the T piece is more than enough to cause turbalance.

basically all i'm saying is you'll get a bored out throttle body to 50.8mm, fully re-assembled and working.

i am trying to figure out how to machine both the throttle body and T piece in one go.

Cheers Tom

Etches · January 27, 2010, 07:29:44 PM

Ill be interested in this tom, plus ur only round the corner, sheff discount , you coming to UD?

giorgio · January 27, 2010, 09:27:18 PM

Not sure if your making the butterfly or not but buying them in is relatively cheap and ensures a good circle

tdh-syorks · January 28, 2010, 07:57:56 PM

Quote from: etches69 on January 27, 2010, 07:29:44 PM
Ill be interested in this tom, plus ur only round the corner, sheff discount , you coming to UD?

no problems etches

yeah i might be coming, see how it goes

tdh-syorks · January 28, 2010, 08:07:31 PM

Quote from: giorgio on January 27, 2010, 09:27:18 PM
Not sure if your making the butterfly or not but buying them in is relatively cheap and ensures a good circle

yeah i usually turn them and part them off.