Throttle body questions

[jimityjim]

70mm TB questions

Im replacing my throtle body but after reading the thread above am not to sure. Heres the setup im running.

b18cr 96 spec
whale penis intake 72mm where it connects to tb
4-1 ceramic coated headers and 2 1/2" with 2 bullets
link ecu
Blox intake manifold 64mm inlet (not yet instaleed) is a factory type r one better?

Ive paid for a blox 70mm tb so this is what im intending to put on.

What should and shouldnt i use?

The car is going to be strictly a track car and driven constantly in vtec and will be tuned once ive finished all the mods unfortunately as im dropping it off in chch to be tuned and heading to raro for a week then picking it up and heading home so wont be able to change over throttle bodies and manifolds to disprove and prove any theories in the disscusion from the above thread but what is your guys oppinions about what i should do? Also should i hone out the intake manifold opening to 70mm to match the tb?

So basicly what combination should i use? If i had unlimited resources i could just pay a man to figure out the best setup on a dyno but i dont So a little help?

[Hayce]

Are you sure you read that thread?

I just did and it was a pretty interesting read and from what I took from it on your setup you wont need it but it's unlikely to cause you grief.
If you are thinking you want to race the piss out of it and leave it at WOT all day go for the 70mm.
Its a big TB obviously and you will only get the maximum benefits out of it if you mod the motor more.
Do port match it to the manifold.

Bump that thread and see if they ever followed it up...

[EVLTEK FBI AKL]

yeah the larger the t/b the slower the air speed - essentially it pushes the power further up into un-useable rpm ranges....

the fastest N/A honda in NZ used only a 64mm t/b

[jimityjim]

Originally Posted by Hayce

Are you sure you read that thread?

I just did and it was a pretty interesting read and from what I took from it on your setup you wont need it but it's unlikely to cause you grief.
If you are thinking you want to race the piss out of it and leave it at WOT all day go for the 70mm.
Its a big TB obviously and you will only get the maximum benefits out of it if you mod the motor more.
Do port match it to the manifold.

Bump that thread and see if they ever followed it up...

Yeah i read it but it depends whos side you take it was pretty inconclusive. ive also read other things e.g Honda and Acura performance handbook by Mike Ancas who raves on about bigger TBs. I suppose ive got nothing to lose so may aswell just stick it on.

Do you think the blox manifold will be better than the factory type r one?

[brenth]

what are the throttle body size differences between b18c and b18cr?

[haimsadia]

Originally Posted by brenth49

what are the throttle body size differences between b18c and b18cr?

google is your friend.......

• d15b7 - 56
  d16a6 - 55
  d16y7 - 56
  d16y8 - 56
  d16z6 - 56
  ZC - 55
  d16a1 - 55
  d16a8 - 55
  b18c1 - 60
  b18c5 - 62
  b18a - 58
  b18b - 60

b16a SiR - 58

• b16a Sir2 - 60
  b16a2 - 60
  b16a3 - 60
  b20b - 60
  b20z - 60
  h23a - 60
  f20c - 62
  f22 - 60
• f23 - 60

• ~

[jimityjim]

my intake side is 65mm not sure about the side that bults to the intake manifold

[Hayce]

Ive not seen the blox one... Skunk2 and the edelbrock performer x seem to be popular but I don't know dude, never looked into them.

[monsterbishi]

i ran a skunk2 pro series one in my old teg, only worth it if you do headwork and cams etc etc

[tysonzane]

People say the Blox manifold is a copy of a ITR intake manifold and the first old Skunk manifold but it is slightly different. I think it was the same size runners but bigger plenum or something like that. If it is better it wont be by too much.

[EVLTEK FBI AKL]

skunk2 gen1/blox are a mould off the ITR manifold.

Skunk2 initially made it only for B18C as ITR obviously wouldn't need bit - but ended up making them for B16A as well.

Then they developed the Pro Series manifold which flows better again....

[monsterbishi]

17% better to be exact

[EVLTEK FBI AKL]

And it makes more power accordingly.

"Our new Pro-Series design features a 22% increase in power over our previous design"

[Genkei]

just ram air into ur airfilter might get abit of boost at 100ks plus

[jimityjim]

Originally Posted by monsterbishi

17% better to be exact

Do you mean the blox intake manifold is 17% better than a factory type r manifold?

[Horny_Devil]

it flows 17% more, doesnt mean its 17% better though

oh and i think hes talking about the skunk 2 one not the blox one

[Coupe-R]

leave it stock, or bore the factory one if you want.

62-64mm TB is plenty big enough.

I run a 70mm mouth and 65.5mm TB (bored ITR one)

bet it would perform the same as a factory ITR one (or worse) on my stock ITR motor

[EVLTEK FBI AKL]

"Our new Pro-Series design features a 22% increase in power over our previous design"

correct - its 22% better