benifits of boring out throttle body and intake manifold

[accordztech]

what are the benifits of boring out the throttle body and intake manifold? i dont want to mess with my head....

what are the down sides? low end power?

thanks

[HondaFan81]

i do not believe the TB is the bottleneck.....starting with ur intake manifold and cyl head P&P or just put in a diff design for ur intake manifold

if u simply bore out ur TB ...ur still going to be limited where the intake mani meets ur cyl head....someone once said...start from inside out

[PRIMOCB7]

porting out the tb and intake manifold does help. it increases air flow and makes the air flow smoother into the head. to get better results have the head matched ported and polished as well. my old F22A6(complete headwork) was runnin' low 14's, until i lost it to hydrolock

[punkrockimport]

whats an average price one would look at to have a p&p done to their head? just a basic price someone has paid. i ahve no clue what costs im looking at. i have a friend who is good at it, so i may get cut a good deal, but if anything id like to know how much i need to save up..because i would like to get a p&p on my head and intake manifold.

[PRIMOCB7]

Originally posted by punkrockimport
whats an average price one would look at to have a p&p done to their head? just a basic price someone has paid. i ahve no clue what costs im looking at. i have a friend who is good at it, so i may get cut a good deal, but if anything id like to know how much i need to save up..because i would like to get a p&p on my head and intake manifold.

save up around $2000+ coz if ur gonna pull the head to get p&p, you might as well get the valvetrain, cams, cam gear(s), uprgraded as well. for example www.jgenginedynamics.com.. head packages start around $1800. www.extrudehone.com also does p&p but a bit more $$$ but well worth it. to p&p the intake manifold is about $500 and the head around $600 and up. these are companies that know what they are doing.

[accordztech]

head port and polish makes me drool...but thats too extreme.

the reason i was asking was that i pulled a f22a6 manifold and inspected the throttle body inlet with the inlet on the manifold. it seems to start small and then open up bigger...so im like wtf...why not just have the whole thing one size?

you know what i mean?


its like this. if we were to catorize the sizes of the wholes from 1, 2, 3 from 1 being the least and 3 being bigger...its like this.


TB inlet=1....innermanifold inlet -->2 and main body inside -->3

[HondaFan81]

Originally posted by accordztech
head port and polish makes me drool...but thats too extreme.

the reason i was asking was that i pulled a f22a6 manifold and inspected the throttle body inlet with the inlet on the manifold. it seems to start small and then open up bigger...so im like wtf...why not just have the whole thing one size?

you know what i mean?


its like this. if we were to catorize the sizes of the wholes from 1, 2, 3 from 1 being the least and 3 being bigger...its like this.


TB inlet=1....innermanifold inlet -->2 and main body inside -->3

a guy in Colorado will street P&P ur cyl head for $475...if u interested PM me. he's worked on about every Honda cyl head , former Honda mechanic as well...opened his own biz...BTW..this price includes new valve stem seals and 3-angle valve job

[CB9]

Originally posted by HondaFan81
a guy in Colorado will street P&P ur cyl head for $475...if u interested PM me. he's worked on about every Honda cyl head , former Honda mechanic as well...opened his own biz...BTW..this price includes new valve stem seals and 3-angle valve job

I'm curious about who you mean . . . I live in Colorado and would sure like to know about a local, reputable headwork guy - thanks.

[phatdoughnut]

I went to my machine shop today and got a quote. if i got new cams and new valve train. He would PnP the head combustion chambers do a valve job, port match my plenum and put everything back together so i can just slap it on

for 300 and some change, at $60/Hr. +/- some time

[mrhonda]

Originally posted by accordztech
head port and polish makes me drool...but thats too extreme.

the reason i was asking was that i pulled a f22a6 manifold and inspected the throttle body inlet with the inlet on the manifold. it seems to start small and then open up bigger...so im like wtf...why not just have the whole thing one size?

hmmmm....not exactly sure. Maybe this creates a venturi affect to increase air speed into the manifold.

[Boost_Lee]

Damn that 300 bux sounds like a great deal. I will probably be doing this to my CB soon.

[phatdoughnut]

YEah i mean sending it to these big name companies for like 500 bucks plus shipping is a rip off.

i like to keep my business local, so if wanna see there work i can just ask them to bust out a head that has been PnP or something. i can ask around town with the hot rod guys and ask about them.

know what i mean? and if there is something wrong with it dont have to ship it back

[HondaFan81]

www.chrracingproducts.com >> Contact: Jeff Fredenburg

tell him Francisco sent ya


My cylinder head & intake manifold are already there for work. Really cool & nice guy. Great prices, has worked on many Honda cylinder heads, former Honda motorcycle & car mechanic with many years experience, started this as own business.

[urbanrunner]

I have no idea where u guys are looking at, but if you send in the mani and TB to JG, to waive the core charge, they quoted me $150 for tb and &180 for Mani.....but i am not sure if i really want to do that....imean i eventually will, i just need the a6 mani to come in!

[Kabuki]

I got my manifold ported at my local machine shop for $50... of course I ended up not being able to use my GSR TB, either... So I spent money I didn't need to... Shit... Oh, well.. Maybe I'll get it to work here someday.