(Updated October, 2010. See our picture gallery for lots of pictures of TBs bored by Maxbore.)
We do not bore BMW throttle bodies. Sorry, those will be sent back.
Welcome to Maxbore throttle bodies.
CAUTION!
Maxbore is an internet only company. We do not have local branches in your town. We have received
reports of other businesses calling themselves "Maxbore" and pretending to be us. Please check with us before
purchasing second hand TBs that are "supposed" to be Maxbore bored TBs.
NEW
Maxbore, using a whole new process, is now boring OEM 06-10 Civic TBs to 70mm.
By using a CNC machined sleeve, the limitations of the stock casting are set aside.
The stock Tb is bored to a true 70mm through with a 73mm tapered opening. No check engine light issues.
$195 shipped anywhere in the US. Email for details.
Maxbore is not just a name, it's the way we bore Throttle Bodies (TB). Unlike most shops
that offer this service, we bore each TB to the maximum safest bore possible.
The only way to do this is to machine our own "in house" custom butterflies. We do not use
pre-cut or die-cut butterflies. We make butterflies in any diameter, thickness,
stop angle or bolt pattern. For this reason, we can bore just about any type of TB out
there that uses a single round butterfly. At Maxbore, our goal is to provide a bored TB that works 100% like OEM.
We guarantee that your TB will idle like it did when it was new.
No cores used. We bore your TB and we send back your sensors. We do not swap parts.
We can bore all the new Drive by wire TBs. Maxbore specializes in Honda/Acura TBs. We can also bore Toyota, Nissan, Mazda,
GM, and all TBs that fit these criteria:
It must use ONE butterfly.
The bore must be round. We do not bore TBs with oval or other shape bores.
The TB must be open on both sides. We do not bore TBs that are cast as part of the manifold.
We bore individual throttle bodies (ITBs) that are cast as single units. If they are cast in pairs we cannot bore it.
HONDA/ACURA
Maxbore got started on Hondas. As such, we have plenty of experience working with them and
can provide this list of sizes you can expect from us.
We bore ALL honda/Acura Drive by wire TBs.
2006-2010 Civic Si from 60mm stock to 65mm.
TSX Tbs with 64mm butterflies bored to 68mm.
D SERIES.
OBD0 D series from 55mm to 59mm with a 62mm tapered opening.
OBD1 and OBD2 D series from 56mm to 60mm with a 64mm tapered opening.
B SERIES.
OBD0 B series from 58mm stock to 62mm bored with a 67mm tapered opening.
OBD1 and OBD2 B series from 60mm stock to 64mm bored with a 68mm tapered opening.
Type R (ITR/CTR) from 62mm stock to 65mm bored with a 70mm tapered opening.
H SERIES.
H series from 60mm to 64mm bored with a 67mm tapered opening.
K SERIES.
K20 series up to 65mm with a 70mm tapered opening.
K24 DBW series up to 68mm with a 72mm tapered opening.
F SERIES.
Accord F series up to 64mm with a 67mm tapered opening.
S 2000 F series from 62mm stock to 65mm bored with a 70mm tapered opening
ALL OTHER BRANDS.
Due to the overwhelming variety of Tbs, we cannot specify a particular size. For
the most part, we can bore TBs from 3mm to 4mm over the stock bore. In some cases where
the casting allows it, we can go well beyond that. Rest assured that your TB will be
bored as large as it can be without compromising the integrity of the casting.
BEFORE AND AFTER.
GENERAL INFO.
Now some information about what it is Maxbore does. The TBs are disasembled, that
includes all the sensors and all moving parts. Then the TBs are thoroughly degreased and
cleaned. TBs then go to the lathe where they are bored, then ported and finally polished.
Notice the bore is polished not just machined. The opening of the throttle body gets a taper
that begins at 6 degrees then 3 degrees then it is hand blended. A new bigger custom butterfly is machined out
of brass. We do not use aluminum or steel. The brass we use is a special type of oil
impregnated metal that lubricates itself. It is more expensive but provides long lasting operation
without binding. The butterfly is then carefully fitted to the throttle body. Once the proper seal is
achieved the TB is reassembled. The throttle position sensor (TPS) is reinstalled (if included) using new screws
and it is set to factory specifications.
TURN AROUND.
Turn around time is 2 to 3 business days. This is a good faith estimate and depending on circumstances
sometimes beyond our control, it could take a few days longer. We do custom machining on used parts
that sometimes do not cooperate. Turn around time does not include shipping time from you to maxbore and viceversa.
Thank you for understanding.
WARRANTY.
Your throttle body comes back with a limited lifetime warranty on workmanship. Warranty does not cover Sensors.
In order to obtain warranty work, the throttle body must be returned in the same condition it was sent to you.
This warranty will be void if you disassemble, or modify your throttle body in any way.
There will be a flat $50 fee for any repairs on throttle bodies that have been disassembled or modified.
Please email me if you have questions not answered here.
