hey i finally got my throttle body out my car and i was wondering what is the best way to bore it out. i heard that 66mm is the most you can go in a stock TB. my setup is i/h/e, underdrive, msd wires. thanks

 

Contact http://www.maxbore.com and have them do it

 

i would have them do it but i cant aford it right now. is there anyway i can do it myself?

 

get a dremel and grinding tools.

or

air compressor with die grinder and associated grinding bits

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelude_93vtec &raquo;</TD></TR><TR><TD CLASS="quote">i would have them do it but i cant aford it right now. is there anyway i can do it myself?</TD></TR></TABLE>


then save some more money and send it somewhere to have them do it right..you will end up doing more harm than good, get your intake manifold port matched while your at it..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Halo &raquo;</TD></TR><TR><TD CLASS="quote">


then save some more money and send it somewhere to have them do it right..you will end up doing more harm than good, get your intake manifold port matched while your at it..</TD></TR></TABLE>

100% agreed. This isn't as simple as porting a head or intake manifold. The TB needs to remain as round as possible to function properly

 

arite guys thanks for the help. im guna save up 160 and get it done by maxbore.

 

just send him the TB and the mani do yourself dude get a dremel .i did my manfold to 69mm's with no problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by InvaderTrax &raquo;</TD></TR><TR><TD CLASS="quote">This isn't as simple as porting a head or intake manifold. The TB needs to remain as round as possible to function properly</TD></TR></TABLE>

A TB can be done blindfolded, with a lathe. Porting a head takes a LONG time and requires a LOT of skill and understanding about airflow, nevermind requiring an expensive flow bench...

 

so im confuzed. kb58 is saying a TB is easy and evry1 else is sayin tb is hard and mani is easy. so what should i do? i have a dremmel. should i do the manifold my self and get the TB done?

 

Ok, you can bore the tb if you want, but you will only be able to do the first part of it with a dremel, and that probably isn't even worth your time. Doing the manifold is easy, just use a cutoff wheel like for a drill.

The dremel SUCKS on aluminum for the most part, every bit I tried sucks big ***....

Having a lathe is perfect for this kinda stuff, get a machine shop to do the IM and get maxbore to do your tb.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kb58 &raquo;</TD></TR><TR><TD CLASS="quote">

A TB can be done blindfolded, with a lathe. Porting a head takes a LONG time and requires a LOT of skill and understanding about airflow, nevermind requiring an expensive flow bench...</TD></TR></TABLE>

Ok, I'll rephrase it. If you have access to a lathe, then boring a TB is much easier than porting a head, but otherwise, I'd rather do the head. A flow bench is a very handy thing to have, but anyone with a good pair of eyes (or a recent prescription and clean lenses) and a good understanding of air flow can do a decent port job

 

A first timer with a dremel and fresh contacts is at a 5% chance of actually increasing airflow without a flowbench.

Brad Z with a dremel is another story altogether.

BTW if you lathe the throttle body keep in mind that you will need a new, bigger butterly

 

ok thanks. do you guys have any idea where i can get a bigger buerfly?

 

KB58's right. It's easy if you have the tools.

i bored mine to 62 after digging out a Legend TB plate:

https://honda-tech.com/zerothre...02182

you're not going to want to do it with a dremel. You can portmatch the manifold but not actually bore it.

Pirate